Fastener

Fastener Manufacturer China shares that Fasteners are a kind of mechanical parts used for fastening and widely used. Fasteners, industry widely used, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic, and so on, in all kinds of machinery, equipment, vehicles, ships, railways, Bridges, buildings, structures, tools, instruments, chemical industry, instrument and apparatus, such as the above, you can see all kinds of fasteners, is the most widely used mechanical components. Its characteristic is breed specification is various, function USES each different, and standardization, serialization, the degree of generalization is very high also. Therefore, some people have the national standards of a class of fasteners as standard fasteners, or referred to as standard parts.

Fasteners:

Fastening a general term for a class of mechanical parts used when two or more parts (or components) are fastened together as a whole.

Application of fasteners：

Fastener is a kind of mechanical part which is used for fastening connection and widely used. In a variety of machinery, equipment, vehicles, ships, railways, Bridges, buildings, structures, tools, instruments, meters and supplies above, can see a variety of fasteners. Its characteristic is variety specification is various, function USES each different, and standardization, serialization, generalizing kind degree is also extremely high. Therefore, some people have the national standard of a class of fasteners as standard fasteners, or referred to as standard parts. Fasteners are the most widely used mechanical base parts. With China's accession to the WTO in 2001 and into the ranks of international trade powers. Our fastener products are exported to many countries in the world, and the fastener products of all countries in the world also flood into the Chinese market. Fasteners, as one of the products with large import and export volume, are of great practical and strategic significance to promote Chinese fastener enterprises to go to the world and promote them to participate in international cooperation and competition. Due to the specifications, dimensions, tolerances, weight, performance, surface conditions, marking methods of each specific fastener product, as well as the specific requirements of acceptance inspection, marking and packaging items.

Common testing instrument：

The most important link in the development and design of fasteners is quality control. There are several major passes from material input to finished product delivery, which have different inspection methods. First of all, the feeding is related to appearance, size, elements, performance, harmful substances detection and so on; Process is more appearance, size, percussion experiment, forging streamline; Heat treatment is more appearance, hardness, torque, tension, metallography and so on; The surface treatment is more some hydrogen embrittlement test, coating, salt spray, etc., including shipment has a harmful substance detection. In dimension and appearance inspection, the common ones are quadratic element, contour measuring instrument, coordinate measuring instrument and image sorting machine (this is a full selection machine). Mechanical and chemical testing, mainly hardness machine (lowe and vickers), tension machine, metallographic microscope; Material testing, there is a spectrum analyzer, salt fog testing machine.

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