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Fastener Introduction And Surface Treatment
May 27, 2017

Introduction of Fastener and surface treatment

Fastener are a class of mechanical parts that are used for fastening connections and are widely used. All kinds of Fastener can be seen in all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, instruments and supplies. It is characterized by a wide variety of specifications, performance purposes vary, and standardization, serialization, generalization of the species is also very high. Therefore, some people have a national standard of a class of Fastener called standard Fastener, or simply referred to as standard parts. Fastener are the most widely used mechanical foundation pieces. With China's accession to the WTO in 2001 and entered the ranks of international trade power. China's Fastener a large number of products exported to countries around the world, the world's fastener products are also constantly influx of the Chinese market. Fastener as one of China's large import and export products, to achieve international standards, to promote China's fastener enterprises to the world, to promote the full participation of fastener enterprises in international cooperation and competition, have a significant practical significance and Strategic significance. Due to the specific requirements of the specifications, dimensions, tolerances, weights, performance, surface conditions, marking methods, and acceptance inspection, marking and packaging of each particular fastener product.

Surface treatment

Fastener generally need to go through the surface treatment, fastener surface treatment of many types, commonly used in electroplating, oxidation, phosphating, non-electrolytic zinc film coating and so on. However, electroplating Fastener account for a large proportion of the actual use of Fastener. Especially in the automotive, tractors, home appliances, instrumentation, aerospace, communications and other industries and the use of a more extensive field. However, for threaded Fastener, the use of not only requires a certain degree of corrosion resistance, but also must ensure that the interchangeability of the thread, here also known as the rotation. In order to meet the requirements of the "anti-corrosion" and "interchangeable" dual-use performance of the threaded Fastener at the same time, it is necessary to develop a special plating standard.

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