Rare Sealed
Rare Sealed
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US $4.99
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Our International Peers In The Sealing Industry, In Which Analysis Of The Advantages And Disadvantages Of
In recent years, along with economic development, development of the industry quickly sealed. However, unlike other industries, sealing Although rapid development of the industry, sealing companies are slowly changing. For example the late 70s early 80s, only in Jiangsu, Zhejiang, Shandong there are a few manufacturers, but now both the coastal and inland, or the South, the North can be seen everywhere Factory sealed, the entire sealing industry has been the previous few, developed to the present 300 as much as it can be said that the pace of development is very fast in. But in terms of individual enterprises, many enterprises changed little detour is not pre-production scale, and some even retrogression, there are no major scientific and technological strength not only to increase, and some the contrary, to weaken, many manufacturers still have the "four old" and hold , that is, old products, old technology, old equipment, old scale. Of course, there are some enterprises, imitation counterfeit products, the ability of some stronger, but throughout the industry, develop new products with independent corporate capacity does not have much.
Total points two sealing industry, namely, dynamic seals and static seals, I am speaking here mainly refers to the static seal. As we all know, in our country, sealing industry can be said that the industry's smallest, but the products are complementary with large-scale industrial use. Regardless of aviation, marine, petroleum, chemical, or mechanical, power generation, metallurgy, mining, etc., are inseparable from the seals. In short, any organic, pumps, pipes, valves places are dependent on seals. So the industry is small, the people involved is very wide.
The product is concerned, the vast majority of manufacturers, or a number of spiral wound gasket, packing ring, packing, and high-strength gaskets and other old products, but still around 20 years ago, the development of expanded graphite and the ancient and near elimination, disabling asbestos fuss , rarely out of the circle. Somewhat a new PTFE products, in technology and quality control far behind foreign countries, such as PTFE packing, Expanded PTFE tape. Looking around, very few new products.
On the technical strength is concerned, most enterprises small proportion of scientific and technical personnel, many enterprises lack genuine curriculum, technical staff, technical strength is weak, so businesses on the lack of appropriate capacity development and transformation. Such as PTFE packing began when the imitation is only added in the PTFE packing only. Now basically solved the problem of color uniformity, but the connection between the PTFE polymer problems have not been fundamentally resolved. It has never been through this Road Process, resulting in poor tensile strength at this stage Chinese-made black PTFE. Have to solve this problem, there is no certain foundation is very difficult. Such as high-strength graphite composite plates, the gill-shaped on a greatly improved connectivity problems have been well resolved, but the anti-sticky issues remain unresolved, low-sulfur corrosion products have not been produced, while the more meaningful super - low leakage rate of product is not heard any research. Since its inception the European Union, the joint caused by a strong, prompting the EU to improve and create a new European seal of quality standards, replacing the previous reliance on the United States a series of standards developed by the Institute of fluid. In the new European quality standards seal leakage rate in the emergence and emphasis. Of China's products are now the leak rate is generally 10-1mg / s level, while Europe has a leak rate of 10-4mg / s-class high-strength graphite composite plate!
The case of equipment is concerned, most enterprises have only a few old knitting machines Taiwan, several home-made winding machine, simple machines and shearing machine washed teeth and so on, depends on the capacity of older workers to organize production; while many equipment manufacturers in the production of long-term task is not saturated. On quality management is concerned, most enterprises rely on operator proficiency to make products, no standards in accordance with standard production processes, nor the necessary management tool. While many manufacturers have achieved ISO9000 series certification, but its internal processes required documents, quality control plan or operating guidance document and device management documentation was often tenuous, and far from international standards.
On the scale is concerned, the vast majority of enterprise sales at 500 yuan, 10 million of the few, only a handful of more than 10 million. Frankly, many manufacturers in a large proportion of sales are outside the co-sourcing parts, the real proportion of their own production is not very high. Therefore, from the current situation in perspective, many small enterprises have difficulties with some well-known foreign companies, manufacturers compete.
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