Casting mold of the gap with international standards

At present, China's production of casting molds will get a strong thrust from the domestic auto industry, along with the Chinese auto industry continues strong, it will make more brilliant achievements. In injection mould  the current wave of economic globalization, the international division of labor is emerging. Many foreign pressure on costs, bulk purchase of casting molds in China, China has even set up casting mold production base. Driving force in the development of the industry in addition to R & D outputs and international support these rigid standards of high-tech, more importantly, the market demand. Market is the development of an industry most original, the most powerful driving force, where there is demand there will be a market. Currently, the country's metal casting mold industry, the market is still a powerful driving force of its development, and domestic and foreign markets.
According to the relevant parties to PE Electrofusion Pipe Fitting  understand the development of the Chinese economy into the Trinidad date, China has initially established a complete industrial system, the normal operation of this huge industrial system is inseparable from the casting mold industry support.
Insiders believe that our production levels and capacity has been greatly improved casting mold, mold quality gap with international standards shrinking. Foreign purchases of high-quality low-cost driven surge in demand for a huge market for Chinese overseas mold mold industry has played a great role.
With the market, China's mold industry is tantamount to casting casting mold industry within China installed a  Coupler mould great engine power, it will continue to drive the development of China's foundry mold industry, will lead to better our metal casting mold industry development . Mould and development will bring the most important aspect of the transition period leap to mold the entire industry will accelerate the transition.

Top Ten Most Influential mold industry news

The main agenda of the mold industry technology innovation strategic alliance of the meeting was to open the mold industry strategic alliance thinking of the feast, for the mold industry competitive advantage of enterprises where the customer does not understand; promotion model simple, single channel, business growth slow; selling expenses High profit margins continue to lower; sales force management difficult; customers easily lost; credit checks on customers' financial difficulties, bad debt and more doubtful; advertising costs soaring, ineffective seven troubled, An Mei Technology Co., Ltd., Wang Xiaolong proposed alliance solutions.
In recent years, the internationalization of the Patriot League, the mold industry technology innovation strategic alliance will lead the industry in terms of scale and technology and are mold industry for outstanding service providers in each category pick together a  pipe reducing coupling mould powerful combination for mold industrial customers working closely in marketing, technology development, brand communication and other aspects. Union members will enhance the corporate image in terms of cooperation with the champions prominent business leader in the industry image, brand doubled, with the other competitors to distinguish. I hope the league can build sales channels, customer resource sharing, increase market share, increase customer trust, boost employee confidence, encourage enterprises to rapid growth and sustainable development. They receive at the venue one hour before came home customer business failures news, go to the emergency temporary, he believes coalition members to exchange customer credit information, effectively avoid financial risks. Based on industry profits mold thin clients better  PE Electrofusion Pipe Fitting and less mold the world is still in the growth stage, the strength is not that he wanted to pack the joint delegation of several peer companies to join the alliance.
Recently organized themselves several technical seminars, participants live are full, the future hope through affiliate marketing summit, jointly hold together exhibitors, joint media campaign landing as soon as possible, and then to the Joint Technology Center to build the extension. They have to participate in all kinds of brand alliances, exhibition  tapping tee electrofusion mould league, but for high-end Union is currently in the blank mold industry, the industry has a Southern League before, but I heard a lot of upstream suppliers afraid to do business with them, we hope that this strategic alliance member companies philosophy is consistent, capable of sustainable development.

Die by the domestic market back on track with a bright future

 Early domestic mold industry is how many people are aware of those low-end market through the day, most personnel in the industry to understand. Over the years, through the efforts of all parties, the domestic industry has been gradually on the right track, and have their own set of systems in the international industry is slowly being recognized. For now beginning to take shape, the basic shape of the industrial system in terms of the future of the domestic mold industry is worth the wait.
Mainly manifested in two aspects: on the  Pipe Plug one hand, each mold of the industry's leading companies have already presented, leading enterprises to play a leading role in the progress of the industry; hand, mold product structure more reasonable. According to the material and forming method, mold is divided into 10 categories, mainly die stamping, plastic injection mold, die casting mold, forging mold, glass molds. Currently, almost the same proportion of the mold industry and product structure composed of developed countries to China.
China's mold industry continue to move forward in the bush, from the initial mold to produce only low-end to high-end precision has now move mold market, such achievements for China's mold market is hard-won. Accumulated bit by bit, step by step forward, and eventually became the striking of the status of industrial sectors, stick with the efforts of each person dies every aspect of the industry is essential. With current technology and existing domestic capacity to meet domestic mold industry, although most enterprises mold needs, but because the industry is still widespread lack of independent innovation capability of enterprises processing needs some Shorter Pipe Clip  personality mold is difficult to meet. In addition, because due to the corporate structure, mechanism and management, including assembly and comprehensive service level is not high, including, in particular, issues such service can not keep still seriously affect the development of China's mold industry presence can not be ignored. China's mold industry is now in development transition, show the problem is inevitable. I believe that through concerted efforts, took in the year in the domestic mold industry will enhance a deeper layer. Insiders believe that in 2013 the development of China's mold industry is significantly better than in 2012.
Chinese economy is in a growth phase transitions and critical period of seeking a new equilibrium. Mould market demand began to pick up, the better to carry out increasingly uncertain situation, with plastic coupler fittings mould  an estimated 2013 Chinese consumption and export growth will be roughly flat with 2012, but the investment growth faces downward pressure, although the possibility that the expected annual GDP growth of about 8% adhere to very large, but by manufacturing overcapacity, rising costs, low profits and other factors, growth is expected to only be carried out cautiously pessimistic.

Auto Mould is an inevitable trend of high-end enterprise development

Last year , according to media statistics , China's mold of key enterprises reached nearly 110 , which accounts for about 37% of stamping dies , these data demonstrated a strong automotive mold manufacturing country , China has become a fact . However, the development of China's automotive die but not so ideal , high-end automotive mold enterprise technology 2 inch pvc coupling mould  is not up to the level of technological innovation capability , inadequate new mold R & D capabilities , etc. The reason for this series are restricting the development of China's automobile mold industry leading automobile companies can not produce molds and dies to match the high-end market , high-end car manufacturers need to mold must also rely on imports. The domestic high-end enterprise occasionally die because of lack of production load , had to change the initial market positioning away seize , the low-end market .
Although the survival of the enterprise to solve the problem , but because of the low-end market, low profit margins , leading to invest R & D and technological innovation rarely , under certain circumstances, a vicious cycle in which companies did not enter a virtuous cycle of development , the domestic mold companies are more high-end cars , making it faces increasingly fierce competition in the market . Experts said that the domestic high-end automotive mold companies in addition to the traditional mold of enterprises to meet Q ( quality ), C ( cost ), T ( period ) requirements, mold development and application of new technologies will become the focus of future development of China 's mold industry direction .
Multi-position progressive die and Pipe Plug  precision die represents the development direction of stamping dies , precision and demanding life , mainly for the electronic information industry , automotive , instrumentation , electrical appliances and other facilities. Both mold , the country has fairly basic , and has the introduction of foreign technology and equipment, the products of individual enterprises has reached the world level, but most companies are still a large gap , the total is also in short supply , import more . For ultra large scale integrated circuit package for more than 100 and a lead foot gap 0.2mm below the lead frame package for the accuracy of 5mm or more matching precision miniature connector for 1.6mm below the core support and micro-motors for the CRT electron gun and supporting the development of precision molds is a top priority . Our high-end line Male/ Female Tee mould  of automotive die mold enterprise is the only way to development , market demand and also contributed to the development of other large and medium-sized stamping supporting multi-position progressive die should also focus on the development .

Our markets continue to strengthen the competitiveness of mold companies

Mold has "the mother of industry," said the foundation technology and equipment belonging to the industrial production. Today, the development of China's mold industry has formed a unique mold industry cluster production base for mold companies provide a platform for scientific development. Meanwhile, the innovation capacity of enterprises is also rising, with a number of independent intellectual property rights, the  Shorter Pipe Clip future of China's mold companies will have a stronger competitive. Nearly a decade, China's automobile industry has made considerable progress. Prospects Industry Research Institute, "China's auto production and sales demand forecasts and mold industry transformation and upgrading Analysis Report" shows that domestic car sales by 2001 the rapid increase of 2,358,500 to 18,505,100 in 2011, a compound annual growth rate of over 20% , in which the automotive panel die demand CAGR car is up more than 30%. At present, China's mold industry output value of over $ 100 billion industry, one of the main application as a mold downstream automotive industry, China is about 1/3 of the mold products for the automotive service industry. China mold industry after decades of accumulated technology and in recent years to increase international exchanges, pay close attention to technological innovation in production technology have achieved significant breakthroughs in business with more competitive, the industry expects 2015 sales value of China's mold will reach 350 billion yuan.
Although in recent years the domestic mold exports increasing level of international competitiveness has improved. But mostly concentrated on middle and low areas, low mold technical level, low value-added, high-precision molds also part dependent on imports, so the domestic mold industry in various fields to strengthen integration. Throughout the development process, related industries and businesses need long-term perspective, the potential lower mind, pay close attention to new technologies, new technology research side, and gradually form a division of labor, there is collaboration in all areas of research and development pattern, introduced with  chinese mould proprietary mold products. Now China's mold industry through the introduction of foreign capital, absorb the advanced experience of foreign mold manufacturing, advanced technology and high-level talents, our mold design and manufacturing level has been greatly improved. "With the increasing domestic demand in China can be expected to die by 2013 China will have a larger growth industry, especially the automotive industry, has led to the rapid development of China's mold industry, promote the rapid transformation and upgrading of mold enterprise." Luo Baihui mold experts believe, strengthen independent innovation in the industry change the growth mode, optimize the industrial structure, have a greater need high levels of mold machinery and equipment, providing a broad development space for the development of mold industry.
More importantly, "five" the implementation of development policies and emerging strategic industries, regional development planning and policy to revitalize the equipment manufacturing industry will die industries are providing new growth point. With manufacturing in developed countries have to transfer to China, China's mold industry is facing a new round of development opportunities. Forecasts, and the internal and external drives Qi moving environment, to 2015, China's mold will reach 350 billion yuan  PE Electrofusion Pipe Fitting sales value. China's mold industry is currently experiencing competitive pressures are mainly price advantage and technological superiority of developed countries to developing countries, need to know not only the development and progress of industrial molds China, Southeast Asia and Eastern European countries in recent years, the development of industrial molds are very fast, its advantages in terms of mold price Obviously, this weakens the cost and price advantage of China's mold industry has always been a certain extent. In addition, Western Europe, Japan and South Korea on the strength of the high-end market, but also to mold China mold industry is facing enormous challenges.

Metal cutting tools market demand to expand reminder hot mold

The rapid development of technology makes many industries increasingly frequent replacement rate , the tool market can not avoid this situation , and now, a simple single-function tool is gradually being replaced by multi-purpose tool . In the future , user research and development tools are constantly demanding more , not just material and surface coating technology limited tool , but the tool production technology will have a  Male/ Female Tee mould more stringent requirements.
In terms of technology updates , gradually replacing the high-speed steel cutting tools carbide cutting tools , especially circular tool . Coated tools used more and more common in Europe, with a new high-speed machining tool market share is growing. Dynamic vendor area. From the point of view of cooperation tool manufacturers in the high-tech areas of the market will be a lot of big companies powerful combination.
Domestic market demand for high-grade mold large, according to forecasts, five-second period, the total market steady upward trend in the mold , but the mold must meet the requirements of the domestic needs of users in terms of quality , delivery and so on. Moreover , appliance, automotive , plastics industry, the greatest demand for molds. International market in recent years, an increase in labor costs in industrial countries , the developing countries, especially Southeast Asian countries forward transfer . Its domestic production of high precision molds based, manual labor into large molds to rely on imports. Therefore , middle and low mold international Coupler mould  market potential is huge. As long as the quality of domestic mold can be improved , to ensure delivery , the export prospects of the mold is very optimistic. In addition , the demand in the international market is also a great standard mold . At present, only a small amount of exports .
In the new wave of integration in the world economy, global manufacturing to accelerate the transfer to mainland China has become a trend , China will gradually develop into a world-class manufacturing base. Obvious advantages of Guangdong Pearl River Delta region  Bridge Bend mould in particular , will become the world's manufacturing center die within a decade .
Although China is the largest producer of molds , but many still rely on imports mold products to large, sophisticated, complex , long-life molds the majority, of the total imports in recent years has reached $ 1 billion . From the perspective of reducing imports , hardware tools market should continue to increase the proportion of high-grade mold , expanding domestic demand .

Mold industry to accelerate the upgrade of intelligent mold growth prospects may

China's mold industry on the one hand in the traditional market steadily forward , on the other hand actively explore new markets , driven in LED lighting and display , lightweight vehicles , rail transportation , medical equipment , new energy , aerospace and other fields of development China's mold industry was significantly improved. These factors injection mould make remarkable marketing mold , the mold has been exported to 188 countries and regions. But can not be avoided, mostly low-end development path of China's mold industry is still walking .
With the continuous development of scientific level , low-cost human resources gradually be eliminated, automation and intelligent manufacturing has become an important development direction of modern manufacturing . In such a case driven , the more difficult challenges had left the low-end line of China's mold industry has to face . The mold industry transformation and upgrading at this time is particularly important . China's mold industry to achieve rapid development, we must develop intelligent mold , mold production with intelligent product quality and production efficiency can be further improved, more materials, automated production and green manufacturing .
" Mold industry is synonymous with ' Made in China' , the lack of high-end products , the low-end serious excess capacity , industry structure imbalance, corporate long-term business model relies puerile barely survive , technology innovation, product research and development work has not yet effective spread, industrial upgrading and transformation have been ' imminent ' , but intelligent mold industry development prospects and look forward to growing space , intelligent equipment, intelligent manufacturing , integration of the two , the implementation of industrial machinery and industrial upgrading policies will drive intelligent mold industry development intelligent mold mold Unlike previous form , generally refers to the injection mold with sensing, temperature control function of stamping dies, die casting molds, as well as with temperature control function , injection mold flow parameters and status of intelligent manufacturing control methods with the traditional mold compared to enhance the efficiency and accuracy a lot .
Mold with high technical content, high  Pipe Plug  value-added products , long life , wide range of applications, such as large market space obvious advantages , high precision and advanced intelligent mold most obvious feature , if used effectively in traditional industries , the intelligent mold will greatly enhance the productivity of existing manufacturing , industrial restructuring , industrial upgrading and better able to carry out the work . Although the total amount of mold is not much, but it represents a new direction mold technology will play an increasingly important role in the adjustment of product structure and terms of industry development patterns , the future is more broad market prospects. However , there are a lot of intelligent mold problems to be solved in the development. Intelligent mold inadequate research funding , research is weak , there is no conducive to Male/ Female Tee mould  innovation in public technical support system. For this aspect of the talent pool is also a serious shortage .
Blind expansion and disorderly development of various industries longstanding illnesses, mold industry is no exception. In the development of intelligent mold , at the national level , local governments should plan ahead industry to develop supportive policies for technological research and development escort , and structural adjustment, eliminate backward production capacity must be strictly enforced eliminated difficult to change the fate of SMEs , to enhance industrial concentration helps to improve the industry to survive.

Future development of the domestic machine tool industry, a significant advantage

Regardless of today's machine tool industry all have important roles to which their country is concerned, it is related to the national defense construction , the relationship between industrial development and even relations with international status. In recent years , with the development of new technologies of machine tool industry has been increasingly in the international industry gradually show its advantages . Such injection mould  a new situation but also to other countries feel the vagaries of market prospects . Enterprise Handheld orders grew slightly , to 60% of the enterprises that demand is stable , 27% ​​of companies expect an increase in orders. 42% of companies believe that improving export potential , most companies still spare capacity .
October 2013 the MT-IX index decreased 1 point , reaching 196 points . The market value of machine tool manufacturers in Japan and South Korea fell , the U.S., China Taiwan and the EU capital market companies performed better , although European companies that the crisis is not over , but demand will not decline much , business investment in new capacity concerns , only to growth potential in the field of investment .
MT-IX with 23 leading index , the market capitalization of companies listed on the world's machine tool production , based on the market value of these enterprises in accordance with the proportion of total revenue weighted turnover machine , thus accounting of the total market capitalization European companies are also able to assess the global share of total output in 2005 = 100 .
The world situation is changing , and the industry structure was equally unpredictable. For now also belong to the rising phase of the Chinese machine tool industry, we need more technology and more time .
In order to implement the national energy, materials , environmental protection policies, machine tool industry in the development of strategies and plans to implement green manufacturing should actively promote the harmonious development of man and the environment .
The so-called green manufacturing , is the guarantee product functionality , quality and cost of the premise , considering the environmental impact and resource efficiency of modern manufacturing mode. It is the 21st century, the development trend of machinery manufacturing industry is an important way of resources , energy efficient cycle applications with minimized environmental impact , resource- saving and environment- friendly .
Energy conservation, green manufacturing chinese mould  contained in the abrasive industry is a more prominent issue , although the abrasive industry has not been included in the " two high " industry category , but clearly the abrasive smelting NDRC included in the restricted industries, the bottom line for the company's survival plan , energy conservation and other companies to learn new technologies , new processes, the development of recycling economy , the full implementation of green manufacturing jobs. The restructuring transformation of development mode , backward , curb overcapacity , manufacturing power to a manufacturing power to achieve change , there should be development strategy. Regardless of industry or business progress , should develop a strategic development plan, the completion of the restructuring task of changing patterns of development , strive for better and PE Electrofusion Pipe Fitting  faster development . Through industry-wide effort to train a number of large and powerful companies , a number of small and specialized small giant enterprises, improve the core competitiveness of the industry. Current research work has been carried out in the machine tool industry are: green design technology research tools , machine tool technology research reorganization can study the whole life cycle of the machine tool technology research and development of cleaner production machine tool technology, CNC machine energy-saving technology research , CNC machine tools to improve the accuracy and performance , thereby enhancing the rough machining precision parts , materials research and development to reduce consumption and so on.

In recent years, the level of development of the domestic mold industry to further optimize and upgrade

In recent years, China's mold enterprise innovation ability has been greatly improved, technical level to specialized, sophisticated, gifted, strong direction, the emergence of many high level of precision stamping dies and new technologies, so as to promote further industry upgrading, mold production and sales volume Habitat International  Pipe Plug
  has been in the forefront, a further decline in the deficit, industrial development momentum.
Mold industry to accelerate the adjustment of product structure, with a large, sophisticated, complex, long-life mold as the representative of the high-tech mold growth rate higher than the overall industry growth rate, accounting for about 35% of the total die. Mold growth rate of exports in 2007 amounted to 35.73 percent, a further decline in the deficit, import mold structure more reasonable, to replace imported mold mold has become a domestic climate.
From the industry structure, the rapid development of private enterprises, state-owned enterprises vitality, market-oriented professional mold manufacturers the ability to improve the quantity and quickly adapt to the characteristics of the production mold industry gathering mold stamping parts production parks have been developed, such as mold industry due to the Midwest developed regions have greater progress.
Some die stamping parts processing enterprise multi-position progressive die precision has reached 2 microns, life expectancy up to 300 million times more than red, multi-position progressive die for individual enterprises has been available in 2500 / min high-speed punch, precision up to 1 micron. Is capable of producing 43 inches large screen TV and 65 inch rear projection television Molded die, 10 kg capacity washing machine full PE Electrofusion Pipe Fitting  of plastic mold and car bumpers, instrument panels and other large overall plastic mold.
Precision plastic mold stamping parts processing cameras and mobile phones have been able to produce plastic mold, multi-cavity molds and small modulus gear accuracy of 5 microns 7800 cavity plastic mold. Sophisticated large-scale die-casting mold has been able to produce a whole escalator pedal die casting, automotive die casting rear axle gearbox housing and automotive engine casting mold. Automotive panel die is capable of producing a full set of mid-range new car outside cover mold. Meridian Tire Mold, aluminum and plastic doors and windows profile extrusion molding, casting or resin molds for rapid prototyping drawing has reached a very high level.
Currently On the whole, China is still only known is the stamping parts and die-producing countries are not known for the  Bridge Bend mould production of power, the product of 15 years and 10 years the gap with the developed countries, there is still mainly middle and low, China's mold industry in recent years will be sustained and rapid growth, showed the following characteristics: product continues toward more large-scale, sophisticated, complex, and the direction of rapid economic development, the technical content will continue to improve, continue to shorten the manufacturing cycle, stamping parts processing mold production will Continue towards information technology, digital, fine, high-speed and automation direction, companies will further enhance the overall strength and core competitiveness in all aspects.

Printed mold machine wear and maintenance

Troubleshooting and Maintenance punch punch is to maintain the highest number of parts, and its main fault is broken. Analysis caused by a broken main reasons are: the punch length is too long, convex, concave die gap uneven, stripper plate stamping process is not smooth, punch plate, stripper plate and punch the gap is too large, die exclude waste flow and so on. So the punch length is generally not more than 35mm, to ensure that it has Reducing coupling mould  sufficient rigidity; die and stripper plate fixed to use the punch mounting plate four small guide column-oriented, in order to ensure the convex and concave mold gap uniformity and a plurality of fine punch guide; Stripper Stripper plate using screws such as sleeve, to ensure its stability when stamping; die hollowed effective in all parts of the cutting edge of the following methods or using vacuum suction to ensure punching waste exclusion unimpeded; addition, the punch blade grinding regularly to ensure sharp die failures and maintenance due to the punching soft material, the thickness of about 011mm, die gap generally reclaimer thick (108)% Almost no gap close to the mold, the mold in order to ensure the quality gap and the punching, die 45 # steel material selection and does not require heat treatment. In addition, the plastic coupler fittings mould  following should die effective edge hollowed out, which will result in a punching die edge parts of the excessive wear and collapse. So should die designed mosaic structure, prepare a few more spare parts in order to facilitate the timely replacement.
Punch and die clearance maintenance convex and concave mold wear, especially the die mold wear increases the gap, leading to the edge of the punched holes varying hair, size becomes large, it is timely with a small hammer to gently knock on copper hit die inserts shaped hole periphery without heat treatment, die by plastic deformation model enables smaller pore size, and then die rubbed off on the edge surface grinder 011mm, close the upper and lower mold, air travel runs 510 times until the punched hole edge burrs can be. To check on a regular basis with a small gap between the punch and the stripper plate, which is less than the die gap and ensure timely lubricant, such as the gap is too large, it should be replaced inserts discharge board. Pillar is to ensure that key parts of the die gap uniform, which not only give the stripper plate orientation, but also to die oriented. The only way to guarantee a reasonable gap between the mold evenly. Regular nail maintenance guide pin and flexible circuit board pad hole position is determined by the position of the positioning holes to ensure that these pre-positioning holes machined on CNC drilling well, hole diameter is usually 53118. Guide being nailed to die on the location and number is not fixed, the ambient temperature and different materials, flexible circuit boards will have a different amount of contraction, leading to the punch hole deviation. Therefore, we should pay attention to adjust the position of the guide being nailed and relative quantity, to ensure product quality. Jump and solutions due to the electrostatic interaction of a flexible tapping tee electrofusion mould  material, punching scrap often cling together, it is difficult to exclude from the mold leak, and some will even be adsorbed on the waste punch after punching a serious impact on the punching waste. Therefore, you should increase the depth of the punch into the die around 1mm, in order to ensure that the waste is completely excluded from the mold. Care and maintenance of the mold die when not in use, it is timely coated with anti-rust oil in the work site, but pay attention to the next should be used to mold the first oil wiped and washed with absorbing paper test, until the oil is absorbed clean, otherwise it will affect the quality of the plating. Mold on the move, to a light, two steady, three slow, to avoid shock and intense vibration. Storage location should be fixed, to control the humidity of the air, to avoid dust or debris falling, should be placed on the shelf, non-directly on the concrete floor.
Fusion Explosion technology solves many of the other processing methods elusive problem, with high precision, long life, low power consumption advantages of practical and significant economic benefits by blasting technique fused workpiece.

Injection mold cooling analysis estimates

Cooling system is an important part of the injection mold. For most mold is cooled by cooling fluid flowing within the network to achieve the cooling pipe . Analysis calculated cooling pipe network, the basic parameters are given in the basis , to determine the pressure and flow of each node of each tube section. Significance analysis of the network , that not only the cooling fluid can be determined whether the pressure pump to provide sufficient pressure to ensure that the flow pipe ( mostly water pump ) , and when the internal branch pipe , the flow distribution can be calculated for each branch . In general, the pipe network analysis methods can be broadly grouped into two categories: the loop method and node method. Loop method that loops around the column loop equation for each pipeline flow is the unknown quantity . The basic approach is to assume that each pipeline flow , and then  the pressure unbalance of each loop flow correction repeated until a sufficient amount of correction small < 1 > This method has introduced almost all the  injection moulding fluid mechanics textbooks , is also the most widely applied < 2 > disadvantage of this method is the need to determine in advance all of the network loop. Literature < 3 > to find all the loops through graph theory methods for pipe network analysis is a creative work , but also led to the complexity of the algorithm reduces the readability of the program. Moreover, the iterative algorithm loop method employed, essentially within the back-projection method, the number of iterations and more inefficient. When the inlet pipe pressure control input parameters , it is also handling more inconvenient . Method is based on the node ( Node ) pressure pipeline crossing point as an unknown quantity to flow out of the node is equal to the sum of the external input ( a ) establish the flow equation , its principle author made ​​a brief introduction. However, the node method also has shortcomings: both ends of the pipe when the pressure is equal to a certain period , when there is no fluid flow , fluid conductivity matrix is ​​singular . This paper will present a new algorithm for node method : Fix traffic node method. This method can bypass the graph theory , not sure that all circuits , while Reducing Tee mould  maintaining the advantages of the traditional node method , you can not deal with singular matrix , and the iteration speed, has practical value. A network analysis of the basic equations of coolant flow in the pipeline Q by the Darcy-Weis bach equation ( head loss equation ) gives : hf = pg = LDV 2 2g (1) flow is defined as Q =! D 2 V 4. Substituting into formula ( 1) to obtain p = 8 L! 2 D 5 Q 2, remember ? = 8 L! 2 D 5, then p =? Q 2 is the pressure drop ( friction loss along the way ); p is the pressure difference across the cooling duct ; coolant density ; g is the gravitational acceleration ; L is the length of coolant holes ; D is the diameter of the cooling duct ; V cooling flow rate ; drag coefficient along the way . Among them, the drag coefficient and Reynolds number along the way (Re = 4 Q # D, # of coolant viscosity ! ) About : = 64 / Re (Re 2 000) 0 000 016 (4 000 - Re) + 0 000 019 89 ( Re-2 000) (2 000 Re 4 000) 0 316 4 / Re 0 25 (4 000 < basic principles Re) 2 node method < 4,5 > node method is based on the pipeline crossing point (node ​​) of pressure as unknown quantity to flow out of the node is equal to the sum of the external input ( out ) flow established equation. For an plastic pipe fitting mould  independent network , by a plurality of first nodes into a plurality of pipe sections, as shown later in Figure 2. The principle of division, is the intersection of different circuits and import and export must be as a node that can not have a branch within a pipe section ; in the pipe section has been divided into good , you can add any number of nodes as needed. The tube section by the nodes i and j define its internal traffic by equation ( 2 ) calculated : Q 2 = | pi - pj | flow ij (3) defines the outflow node positive inflow is negative , and note Q ij is flows from the node i to node j of flow of formula ( 3 ) can be further rewritten as the directional flow form : Q ij = pi - pj ij | Q ij | = g ij (pi - pj). Wherein , g ij = 1?
ij | Q ij | (4) is similar to the conductance of electrical engineering , g ij here can be called liquid lead . For any network node i, the sum of the liquid from the interior of the tube should be equal to the net inflow and outflow of external input and output sum of qi, therefore, j Q ij = jg ij. (Pi - pj) = q i for all network similar equations are established node obtained an equation : Gp = q (5) G is the conductance matrix solution , which is a non-linear set of equations for a given initial pressure or flow , and then solved iteratively until convergence , you can get pressure on each node , and then get the flow of each pipe section . Overall, the Formula Node law expression , calculation procedures and computational efficiency are superior loop method .
Improved Method 3 can be seen from the node (4 ) , when the pressure is equal at both ends of a pipe , the pressure is zero, the flow inside the pipe is zero , and thus guide the liquid tends to infinity, the finally obtained liquid guide singular matrix . To solve this problem, we propose an improved method .

The rapid development of the radial tire mold faucet

Company car radial tire molds for the domestic industry leader . Company 2010 4500 sets of mold production , operating income of 600 million yuan, the domestic market share of about 27% international market share of about 5% , as the largest and most complete variety of radial tire plastic pipe fitting mould  mold manufacturing enterprises.
Companies planning through three to five years , the domestic market share increased to about 35%, foreign market share increased to about 15% , vast room for growth .
Our radial tire mold industry has room to grow . ( 1 ) international tire production capacity in China to shift the center of the developing countries , the domestic tire production capacity is expected to reach 40 % of the world ( currently about 26% ) ; ( 2 ) thousands of cars in our country about the global average 50% of the world's 128 cars per 1,000 , while China is only 62 , China's auto consumption remains great potential. ( 3 ) the rate of radial tires is still room for improvement. 2009 radialization rate of 76.3% , and still far from complete meridian .
A global leader in EDM technology . Company background tire mold processing equipment , has a long experience in the Plastic Adapter Union mould  process of accumulation of technology , which has EDM global leader in intellectual property .
Raise investment project will increase capacity , supporting capacity and R & D capabilities . The investment company raised a total of four projects , including precision radial tire project ( 349 million yuan ) , high-grade Precision Casting Center Project ( 217 million yuan ) , giant radial tire vulcanizing machine project ( 112 million yuan )
Engineering Research and Development Center to raise tire projects ( 040 million yuan ) in four parts , with a total investment amount of 718 million yuan . Raising projects are all put into production, the company will add annual revenues of 723 million yuan , 248 million yuan in total profit added , the company's profitability will be greatly improved. Earnings forecasts and valuation : We forecast 2011-2013 net profit attributable to parent company will achieve 239 million yuan , respectively , 310 million yuan and 403 million yuan , to achieve diluted EPS were 1.20 yuan , 1.55 yuan and 2.01 yuan . According to the valuation of the shares is expected to ship comparable companies , as well as its leading position and growth trend of the company , we believe that the company may be given 20-25 times 2011 PE, thus corresponding to the reasonable value range of 24-30 dollars.