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Definition of the machining industry
Release time: 2022-07-28
Mechanical parts machining is a process of changing the external dimensions or properties of parts and workpieces with machining machinery. According to the processed parts workpiece is in the temperature state, divided into cold processing and hot processing. Generally processed at room temperature, and does not cause chemical or physical changes in the parts of the workpiece called cold processing. Generally higher or lower than the normal temperature state of the processing, will cause the chemical or physical phase of the parts of the workpiece changes called thermal processing. Cold working according to the difference in processing methods can be divided into cutting and pressure processing. Hot processing is common heat treatment, calcination, casting and welding. In addition, the assembly often need to use hot and cold processing. For example: bearings in the assembly of the inner ring is often put into the liquid nitrogen cooling so that its size contraction, the outer ring will be heated appropriately so that its size enlargement, and then assembled together. The outer ring of the wheel of the train is also heated to set it on the substrate, cooling to ensure that the combination of firmness.
Mechanical parts processing, machining by the huge market pull and policy support, China has become the world's largest roadheading machinery processing manufacturing base and application market, domestic roadheading machinery processing also in the international market to form a certain degree of competitiveness. However, there are still many problems in the domestic roadheading machinery processing industry. A unified, open and fully competitive market is an important condition for the healthy and sustainable development of the machining industry.
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