pvc pipe repair treatment

pvc pipe repair treatment methods are as follows :
1 stick Interface slight leakage : leakage of the adhesive bonding of the processing method can be used to trap the adhesive patch . This method must first be drained within a pvc pipe water , and to form a negative pressure within the pvc pipe , and then the adhesive note  electrofusion coupling mould on the site of the leakage gap , due to the negative pressure within the pvc pipe , adhesives sucked gap , and reached only the purpose of the drain .
2 bonding flange leaks : the water drained , lifted gate . The pvc pipe spigot end connection flange joints wipe with adhesive brushing .
3.pvc small area of ​​the pipe due to external causes damage , cracks, and the physical properties of the surrounding unchanged bonding method can also be processed ( patch ) . Method: the memory of water drain pipe , the pipe will be damaged parts of the surface roughening ; cross section of the same pipe diameter , whichever half ( covering an area larger than the damaged area ) , the inside of the selected segment wipe fight hair , damaged parts in the pipeline painting the inner surface of the tube sheet  pipe reducing coupling mould and the selected patch adhesive sheet to cover the repair pipe pvc pipe damaged parts of the surface compression and fastening pipe card or wire ( two ) .
4 between the flange and valve gasket leaking valve at both ends of the pipe section shall be adjusted to the same level symmetrical with the gate and then tighten bolts.
.. 5 welding repair method : a welded parts should be made dried , and clear their dust, oil and other fats surface ; bonding interface when welding repair , the adhesive must be cleaned before welding.
b.pvc pipes and fittings slight leakage without affecting the structural safety under conditions , can be repaired by welding rod pvc-u , the ambient temperature is not lower than 5 degrees Celsius. When using the multilayer welding , after a period of time to cool , then the  chinese mould next layer welding. When welding , the need to maintain the proper temperature and pressure , hot air temperature should be 260 degrees -290 degrees Celsius. Overheating of the material easily deformed or carbonized high pressure may cause rupture of the weld after cooling .
c. bead should be beyond repair parts around the edge of each 9mm-13mm.

Auto Mould become the focus of China's market

At present, China's high profile car cover mold almost entirely dependent on imports, and medium-sized plastic mold and external accessories is also a great demand for the development of large-scale high-tech precision automobile, motorcycle cover mold and medium-sized interior Pipe Plug and exterior trim plastic mold is an important task in the future of the automotive, motorcycle mold. Auto mold is the top priority of China's mold market
Because automobile, motorcycle industry is one of the five pillar industries of the national economy, with the Shorter Pipe Clip  rapid growth of China's automobile, motorcycle exports, plastic molds and metal instead of wood, plastic mold will demand in the automotive and motorcycle industry greatly increased, especially in the development of new materials and new molding technology, making the demand for plastic products in the automotive and motorcycle industry is growing.
In a certain extent, automobile, motorcycle plastic products to reflect the amount of a country's level of car, motorcycle industrial development. The average use per vehicle has reached about 100 kg of plastic, but they are the instrument panel and other interior trim plastic coupler fittings mould  parts used in all plastic products. Currently, the automobile, motorcycle plastics applications have been developed by the ordinary decorative pieces to the structure, functional pieces. The use of plastic materials has also been extended to the ordinary plastic with high impact resistance even better composite or plastic alloys. With technological innovation and the development of mold market will be more gratifying news came.

Pay close attention to the development of plastic mold manufacturing high-end products

China's plastic mold industry has grown rapidly in recent years, mainly in the plastic mold products to optimize and upgrade the quality of the technical aspects. However, although the manufacturing cycle mold plastic products in shrinking, but still in the manufacturing and foreign advanced level there is still a long gap. At present, China's consumption of plastic has been ranked first in the world, but per capita consumption is only 1/7 industrial countries, 1/4 Industrial moderately developed countries, this aspect of our existence reflects the gap, on the other hand 2 inch pvc coupling mould  China's industrial and demonstrated the tremendous development of plastic mold industry empty plastic "Currently, our country needs strong mold industries including aerospace, defense industry, rail vehicles, construction machinery and other industries, especially in a total investment of 220 billion yuan Beijing-Shanghai high-speed rail project, more than 30 billion yuan investment in large-scale projects, such as aircraft, will give the plastic mold industry has brought new challenges and opportunities. "Secretary-General of the International Mould & Metal & Plastic Industry Suppliers Association Luo Baihui that the development of China's plastic mold industry must rely on national key construction projects, to develop precision plastic injection molds, mold coverage and large injection mold; simultaneously by accelerating corporate mergers and acquisitions and product upgrading, narrowing the distance between the countries, so that China's sustained and healthy development of the plastic mold industry. A high proportion of mold enterprise technical staff, the majority of companies in more than 25%, some 50% or more, many companies often interchangeable workers in technical and production jobs. Training of trainers and high-end CNC machine operation skills of domestic mold lack of high-tech enterprise employees processing technology, in a way that also affected the utilization  plastic pipe fitting mould of high-end equipment. Die low proportion of technical personnel of enterprises, most enterprises between 15% to 20%, and lower integrated development capability.
Mold factory often and materials manufacturers, product manufacturers to develop; injection molding factory with material manufacturers will jointly develop new models; brand plastic vendors and brand car companies jointly developed a new plastic and steel products. Such strong cooperation, so that enterprises have a strong R & D capability. Chinese enterprises in innovation, greater R & D capability gaps. "
China's plastic mold industry current and future development, to work closely with key project of the steel, automobile, petrochemical, shipbuilding, light industry, textile, nonferrous metals, electronic information, these nine national defense industries, to enhance 2 inch pvc coupling mould  large molds, precision injection molds, upscale standard mold manufacturing capacity; achieve localization tool steel and high quality, improving mold material supply system to provide a more comprehensive variety of sizes and grades of material, and greatly reduce mold manufacturing enterprises preparation cycle; improve mold new material , new plastic molding process and a new high-strength, high toughness, high temperature plastics research and development capabilities; improve the overall level of enterprise information management and integrated manufacturing mold.

China's mold industry technology needs further breakthroughs in local

 China is a big country, but also a big consumer of industrial products, mold development as one of the essential modern industrial equipment, wide range of applications. At present, China's mold industry market is very large, and each year was 15% to 20% trend growth, mainly due to the development of China's automobile, home appliances, IT industry, packaging, building materials, daily necessities, such as mold large user industry. Unfortunately, although the domestic market demand remains high demand for mold, but because of mold technology compared with the current PE Electrofusion Pipe Fitting  international level there are still some gaps, resulting in mold manufacturing technology behind many of the independent development of the industry has been greatly restricted, some of the high-tech mold is still dependent on imports, coupled with advanced technology companies in recent years, more emphasis on the protection of the mold which caused some enterprises to introduce technical difficulties. For this reason, and to improve the level of China's mold industry Manufacturing became imperative thing. With the continuous development of the total economy and industrial products End Cap mould  and technology, resulting in all walks of life for a growing demand for molds, technical requirements are also increasing focus on developing high-tech mold and constantly improve the level of standardization of the mold became the second five development priorities. Especially for tools need to rely on high-tech products as precision die mold industry, such as the computer's chassis, connectors, and many components in the manufacture of precision plastic mold and precision stamping dies, are electronic products can not be acquired equipment Today, the rise of the tech boom mold industry, to further accelerate the reform of China's mold industry update path, and follow the mold industry restructuring  Bridge Bend mould led the entire industry into a new round of production dynasty, combined with high-tech mold production technology, enabling enterprises to be more accurate, more efficient completion of product design and production process, close to the pace of international markets.

The overall strength of China's mold industry to be improved

At present, China hardware tool and die industry has entered the world. China's hardware industry is now at least 70% of private enterprises, the main force of China's hardware industry development. China has gradually become a big country and export world's largest metal processing and metal has become one of the world's largest producer, has a vast potential market and the consumer.
From the market, the domestic market  pipe reducing coupling mould demand for high-grade mold large, according to forecasts, "Twelve Five" period, the total market steady upward trend mold, but the mold must meet the requirements of domestic users in terms of quality, delivery, etc. demand. Moreover, appliance, automotive, plastics industry, the greatest demand for molds. China had become the mold production centers to enhance the overall strength of the need to accelerate
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 in particular, will become the world's manufacturing center die within a decade. With the increasing domestic demand in China can be expected to die by 2013 China will have a larger growth industry. Especially in the automotive industry, has Shorter Pipe Clip  led to the rapid development of China's mold industry, promote the rapid transformation and upgrading of mold enterprise.
The industry believes that, 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 Male/ Female Tee mould  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 output will reach 350 billion yuan.

Analysis Methods of mold

Simulation analysis method based pipe die polymer melt was analyzed using the method according to the processing rheology of the polymer knowledge , theoretical equation solving .
But in the solution process , you must  electrofusion coupling mould remove some of the smaller factors that influence on the flow process some reasonable assumptions to simplify the solving process . Simplify the calculation conditions used are: ( 1 ) Melt is a power law fluid ; ( 2 ) steady laminar incompressible ; ( 3 ) full development flow ; ( 4 ) no-slip ; ( 5 ) does not consider gravitational and inertial forces .
First, to determine the geometric modeling parameters : Determine the basic data to simulate the experience of the tube  plastic coupler fittings mould through the nose design method , the main parameters are: diversion angle 54 °, shunt length (L1) 80mm, compression angle 30 °, stent length (L2 ) 22mm, compression length (L3) 120mm, hole drilling stereotypes length (L4) 60mm, die inside diameter of 30.65mm, mandrel outer diameter 24.146mm, compression section inlet diameter (D2) 94.958mm, tapered end of the shunt diameter ( D1) 82.938mm. Due to the changing needs of the simulation model of safety chucks some geometric parameters , so you want to change the PE Electrofusion Pipe Fitting  geometric parameters using parametric modeling method. Since the calculated amount of reasons, the analysis process , to select only a greater impact on the product parameters analyzed . Studies selected diversion angle , angle and shape compressed length as the analysis parameters. These parameters are related to the parameter of the model (due to shunt rounded inner and outer cone section and setting the value assumed to be constant , so that D1 and L1 determine the angle α and the shunt L1, L2, L3, L4, D1 and D2, D2 and L3 decision compression angle β).

Market policy effects appear mold industry benefited

The economic situation in the world market is still not very optimistic about the various countries of the world are working to change the current economic situation in order to break through the constraints of market economy status quo . For its part, the industry 's efforts to effect the parties is very significant , manufacturing has been the point of the amount of China's industrial development is a very important part , holds many lessons for China, as a manufacturing country will not change the pattern of the short term , China's manufacturing power of transformation  Shorter Pipe Clip strategy is also being implemented in full swing among this year's development is a major manufacturing industry is also an important part of the mold is very optimistic that the process is constantly accelerating. From the current development trend of China's mold industry hardware point of view , in 2013 the development of China 's mold industry is significantly better than 2012 , then this trend will continue as a going better yet , let's look together , die mold our experts on 2013 forecast industrial situations. Chinese economy is in a growth phase transitions and critical period of seeking a new equilibrium . Mould market demand began to pick up , to the good development trend of increasingly uncertain estimated 2013 Chinese consumption and export growth will be roughly flat with 2012 , but the investment growth faces downward pressure , although the annual GDP growth rate of around 8 % of the expected insist on the possibility of it large, but by manufacturing overcapacity , rising costs , low profits and other factors, growth is expected to only be carried out cautiously pessimistic , full- year high to low very likely . Looking to 2013 , in the mold , the global economy will remain in a period of adjustment after the financial crisis , the overall situation may be slightly better than 2012 , but the situation is still complex , and uncertain factors increase the risk of continuing to carry out sluggish and slow growth is still the main tone. Supporting role in the mold industry transformation and upgrading of the manufacturing sector has been widely recognized , although less than last year's momentum of world economic recovery , the European debt crisis and the fermentation serious impact on China's economy , China's mold industry is still achieved rapid growth , according to the China Die network understanding China's mold exports reached $ 3.731 billion , an increase of 24.16% . our daily production and life in the use of a variety of tools and products , large machine tool base, body shell , an embryo as small head screws , buttons and various kinds of household appliances shell , all PE Electrofusion Pipe Fitting  closely related with the mold . Determines the shape of the mold shape of these products, processing quality and precision mold will determine the quality of these products. Because different materials for various products , appearance, size and purpose of the mold into the casting mold , forging , die casting mold , stamping mold and other non- plastic molds and plastic molds. 1 . Industrialized countries due to manufacturing costs and other reasons, including the high-end middle and low mold mold part of the demand mainly through external procurement . China's mold levels and export capabilities fully meet the need, and therefore a huge mold export market space.
2 ...... After 30 years of development, China's mold industry system is basically complete , greatly improve the technical level , management capabilities continue to progress. Outlook 2013 , by speeding up transformation and upgrading, enhancing innovation, improve product level, the mold industry growth of 10% is a safe . Meanwhile, as China's mold comparative advantage in international markets persists, the annual export growth rate of around 20% is still possible .
3 expand domestic demand to implement the strategy will promote the development of China's manufacturing industry . Which the development of the automobile , home appliances , IT industry , packaging , building materials, daily necessities , such as mold large user industry , the market will continue to provide a large space for the development of mold industry . For example, the automobile manufacturing process more than 90% using molds, auto-related molds accounted for more than one-third of China's total mold Germany, Japan , the United States accounted for more than 40% , mainly depends on the development of automobile molds launch of new models ; plastic products for more than 90 % owned by molding , plastic mold and therefore accounted for 45 % of the total of China's mold , plastic products in China 2012 nearly 60 million tons , and annual growth of 15 % to 20 %, according to the development trend of China's mold industry should do good correlation of preparation, production Plastic Adapter Union mould  and marketing arrangements to do a year . Mould domestic manufacturing industry occupies a special position in the manufacturing system, which determines the level of development of the overall level of manufacturing . Experts pointed out that "five " period, the overall goal of China's strategic emerging industries intelligent mold manufacturing equipment development is the development of intelligent mold to boost efficiency, precision and improve the overall level of high-performance molds to meet the " intelligent manufacturing " complementary required to drive the mold in order to improve the overall level of service of strategic emerging industries , making intelligent mold level has been greatly enhanced , and lay a solid foundation for China's mold industry in 2020 into the world die power.