How to understand the precision machining industry

It refers to the material properties that the parts should have when they are used, including mechanical properties, physical properties and chemical properties. For most parts, precision machining is the main necessary index, and the main parameters of mechanical properties are strength limit σb, elastic limit σe, yield strength σs or σ0.2, elongation δ, section shrinkage ψ, impact toughness ak and hardness HRC or HBS. In these parameters, strength is the main performance index of mechanical properties, and only when the strength meets the requirements can the parts work normally and be durable.

The processing properties of the material are mainly: casting, pressure processing, cutting, heat treatment and welding properties. Its processing performance directly affects the quality of parts, production efficiency and cost. Therefore, the process properties of materials are also one of the important basis for material selection.

The processing cost of parts with appropriate manufacturing accuracy and surface roughness increases with the improvement of accuracy, especially in the case of high accuracy, this increase is extremely significant. Therefore, high precision should not be pursued without sufficient basis. In the same way, the surface roughness of the parts should also be appropriate according to the actual needs of the matching surface.

When designing mechanical parts, it should not only meet the requirements of use, that is, have the required working ability, but also meet the production requirements, otherwise it may not be manufactured, or although it can be manufactured, the cost of labor and materials is very uneconomical. At present, the production cost of domestic machine tool enterprises has increased, and the foreign trade advantage has also been weakened due to the upward fluctuation of the exchange rate, and the operating pressure has been increasing.

In the face of challenges at home and abroad, how should domestic mechanical and electrical manufacturers respond and seize opportunities? Technological innovation and machine tool product upgrading are the development direction of the domestic machine tool manufacturing industry. Under the current economic situation, inefficient enterprises with high energy consumption are bound to be eliminated, and only by following the market demand and taking the road of high-tech sustainable development can they base themselves on the market.