The specific suitable materials for precision mechanical processing are as follows

In China's precision mechanical processing, in which fields is precision mechanical processing applied? Precision mechanical processing features high accuracy and relatively high processing costs. It is mainly used in civilian and military fields, such as national defense, medical equipment, aerospace and electronic products. With the continuous development of the optimization and upgrading of China's industrial structure, the demand for precision parts processing is also increasing. Therefore, it has received high attention. Therefore, a great deal of human, material and financial resources have been invested in this field, cultivating talents for the development of precision mechanical parts processing in our country.

However, not all materials are suitable for precision mechanical processing. Some materials are too hard, exceeding the hardness of the processed machine parts, which may cause the machine parts to break. Therefore, these materials are not suitable for precision mechanical processing, except for machine parts made of special materials or laser cutting.

The materials used in precision mechanical processing can be divided into two types: metallic materials and non-metallic materials.

For metallic materials, stainless steel has the highest hardness, followed by cast iron, then copper, and finally aluminum. The processing of ceramics, plastics, etc. belongs to the processing of non-metallic materials.

First, there is the requirement for the hardness of the material. For some occasions, the harder the material is, the better. It is only due to the hardness requirements of the processed machine parts that the material to be processed cannot be too hard. If it is harder than the machine parts, it cannot be processed.

Secondly, the material should be neither too hard nor too soft, at least one grade lower in hardness than the machine parts. At the same time, it is necessary to consider what the function of the processed components is and select materials for the machine parts reasonably. In conclusion, there are certain requirements for materials in precision mechanical processing. Not all materials are suitable for processing. For instance, materials that are too soft or too hard, the former have no need for processing, while the latter cannot be processed.

The precision mechanical processing industry has always been labor-intensive, capital-intensive and technology-intensive, with a relatively high industry threshold. Even if a general enterprise is established but does not reach a certain scale, it is difficult to generate profits. The requirements for precision mechanical processing are extremely strict.

The processing procedures of precision parts have extremely strict requirements. A slight mistake during processing can cause the workpiece error to exceed the tolerance range, requiring reprocessing or the scrapping of the blank, which greatly increases the production cost. What requirements should be followed when processing precision parts?

Firstly, there are requirements regarding dimensions. It is essential to strictly follow the shape and position tolerance requirements of the drawings for processing. Although the actual dimensions of the components processed and produced by the enterprise will not be exactly the same as those on the drawings. However, if the actual dimensions are within the tolerance range of the theoretical dimensions, they are all qualified products and can be used as parts.

Secondly, in terms of equipment requirements, rough and finish machining should be carried out using equipment with different performances, as the rough machining process involves cutting most of the parts of the blank. When the feed rate of the workpiece is large and the cutting depth is large, a large amount of internal stress will be generated. At this time, fine machining can no longer be carried out. When the workpiece undergoes the finishing process after a certain period of time, it should be operated on a machine tool with higher precision so that the workpiece can achieve very high accuracy.

Secondly, the processing of precision parts often involves surface treatment and heat treatment procedures. Surface treatment should be carried out after precision mechanical processing. Moreover, during the precision mechanical processing, it is necessary to consider leaving a thin layer thickness after surface treatment. Heat treatment is to improve the cutting performance of metals, so it needs to be carried out before machining.