What is the machining allowance?

More with the development of new technology, new technology, precision casting, cold extrusion, molding technology such as direct accumulation and increasingly mature engineering plastics applications in machinery manufacturing, from close to the shape of parts to develop in the direction of precision forming, copying. With free forming manufacturing instead of cutting processing, some do not need mechanical processing forming parts, can be used directly, such not only can save the conservative blank manufacturing energy and material consumptions, at the same time also greatly reduces the product manufacturing period and cost of production. Processing machinery is the main pollution sources and the cost of the cutting fluid of parts manufacturing capital im 16, the most effective way to solve the problems are caused by cutting fluid is to use green cutting technology. Shenzhen, shenzhen machinery factory machining process, directly change the raw materials, Or blank) Shape, size and performance, and make it into a finished product, the process of the called process. The production process of main parts. For example, the blank casting, forging and welding; Change material performance of the heat treatment; Parts of machinery processing, etc. , all belong to the technological process. Process is composed of one or several order to work out qualified parts of process, must be cut off from the blank that the thickness of the metal layer, called the machining allowance. Machining allowance and allowance can be divided into the process and the total allowance. A process for removal of the layer thickness of metal, known as the process of machining allowance. From blank to scrap in total need resection margin, is called the total surplus, the sum of allowance in each process is equal to the corresponding appearance. Workpieces for a process with the machining allowance on purpose in order to remove the stay of machining error and surface defects, such as casting appearance chilled layer, porosity, sand inclusion, oxide coating on the surface of the forging cracks, decarburization layer, appearance, machining of internal stress after layer and the surface roughness, etc. So as to improve the precision and surface roughness of workpiece. How ability is a machining allowance? Here the first brand of mechanical processing plant for many years I make machining experience under the share for you, leave machine on the work piece machining allowance to excision procedure to stay on the purpose of machining error and surface defects, such as casting appearance chilled layer, porosity, sand inclusion, oxide coating on the surface of the forging cracks, decarburization layer, appearance, machining of internal stress after layer and the surface roughness, etc. So as to improve the precision and surface roughness of workpiece. Mechanical processing production process from raw materials, Or semi-finished products) Made from whole process of product, including transportation and storage of raw materials for machine production, production preparation, blank manufacturing, parts machining and heat treatment, product assembly and debugging, paint and packaging, etc. Modern enterprise with the content of the production process is very extensive, the principle and method of system engineering organization and guide the production, the production process as a production systems with input and output. Can make the enterprise scientific management, make the enterprise more resilience and competitiveness.
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