What are the seals commonly used in the industry?
In terms of products, the vast majority of manufacturers are still some winding gasket, packing ring, packing and high strength gaskets and other old products. Slightly new PTFE products, in technology and quality greatly behind foreign countries, such as PTFE packing, expansion PTFE tape. Looking around, new products are scarce.Technical force, the majority of enterprises accounted for a smaller proportion of scientific and technical personnel, many enterprises lack the technical personnel of genuine curriculum, technical force is weak, so the lack of enterprise development and transformation ability of the corresponding. Since the founding of the European Union, the combination of the strong, prompting the European Union to improve and establish a new European seal quality standards, replaced by previous reliance on the American fluid association set a series of standards. Leakage rates are highlighted and highlighted in the new European seal quality standards. The leakage rate of our products is generally at the 10-1mg/s level, while in Europe there has been a high strength graphite composite sheet with a leakage rate of 10-4mg/s!On equipment, most enterprises have only a few old weaving machines, several homemade simple winding machine, punching machine and shearing machine, rely on the old worker's ability to organize production; and many manufacturers of equipment in the long-term production tasks in unsaturated conditions.In terms of quality management, the vast majority of enterprises rely on the proficiency of the operators to do the products well. They do not produce according to the standard process standards, and there is no necessary means of management. Many manufacturers have made a series of ISO9000 certification, but the process documents, provided its internal quality control plan and work instruction documents and equipment management documents are often tenuous, and international levels far apart.
In recent years, with the development of economy, the development of sealing industry is very fast. But unlike other industries, the development of the sealing industry is rapid, but the sealing enterprises are changing slowly. For example, at the end of 70s and early 80s, there are several manufacturers only in Jiangsu, Zhejiang and Shandong, and both coastal and inland, and the South and the north, everywhere seal factory, the entire industry has been sealed by the previous few, the development of 300, the growth rate can be said to be very fast. But in terms of individual enterprises, many enterprises did not change, the scale of production roundabout, or even reverse, the power of science and technology not only did not increase greatly, but some in the weakened, many manufacturers still hold "four old" do not put, that old products, old technology, old equipment, old size. Of course, there are some enterprises, imitation, imitation of some products stronger ability, but in the industry as a whole, independent development of new products capacity of enterprises is not much.In terms of products, the vast majority of manufacturers are still some winding gasket, packing ring, packing and high strength gaskets and other old products. Slightly new PTFE products, in technology and quality greatly behind foreign countries, such as PTFE packing, expansion PTFE tape. Looking around, new products are scarce.
In recent years, the production and quality of rubber seal products in China have gradually entered a new stage and new period. However, only these can not satisfy the need of the development of other industries of various types of rubber seal products standardization and serialization of products, especially compared with the international advanced countries, our products in terms of product quality, or product varieties, has a considerable gap. The 100 forum focuses on the concept, seal the research content and research significance, summarizes the current situation of rubber seal, mechanical seal and packing seal technology, analysis of China's and the world advanced sealing technology in developed countries at the level of research and development ability of the new products on the gap, and our future focus on the seal the field of research and put forward some suggestions.The overall competitiveness of China's sealing industry is not strongAs we all know, in our country, the sealing industry can be regarded as the smallest industry, but the products can be used in conjunction with large industries. No matter aviation, navigation, petroleum, chemical industry, or machinery, power generation, metallurgy, mines, etc., are inseparable from the seals. In short, all organic, pump, pipe, valve places are dependent on the seal. Therefore, the industry is small, involving a wide range of faces.
