Not all materials are suitable for precision metal parts processing. Some materials have too high hardness, even exceeding the hardness of the processing equipment, while some special materials are not suitable for precision processing due to their characteristics. So, which materials are suitable for precision processing and what are the specific requirements? The following will introduce this in detail.
First of all, the requirement for material hardness is crucial. In some cases, the higher the hardness of the material, the better, but this is limited to the hardness required by the processed parts. However, the processing material itself should not be too hard, otherwise it will exceed the hardness of the machine parts and cannot be processed. Therefore, when selecting materials, it should be ensured that its hardness is moderate, at least one level lower than the hardness of the machine parts. At the same time, the purpose of the processing equipment and the reasonable selection of machine parts should also be considered.
In general, precision processing has certain requirements for materials. Not all materials are suitable for processing, such as materials that are too soft or too hard. The former often does not need to be processed, while the latter cannot be processed.
Before processing in a mechanical parts processing plant, special attention should be paid to the density of the material. If the material density is too large, its hardness may also increase accordingly. Once the hardness of the material exceeds the hardness of the machine part (such as a turning tool), it cannot be processed. This will not only damage the parts, but may also cause the turning tool to fly out, causing dangers such as personal injury. Therefore, for mechanical processing, the hardness of the material must be lower than the hardness of the turning tool to ensure the smooth progress of the processing process.
In addition, for precision parts processing, the dimensional requirements are also extremely strict. For example, the diameter of the cylinder must be accurate to a certain range, and both positive and negative errors must be within the specified requirements. There are also clear regulations for positive and negative errors. If the diameter of the built-in cylinder is too large and exceeds the allowable error range, it may cause the insertion to be impossible; if the diameter is too small and exceeds the lower limit of the allowable negative value of the error, it may cause problems such as loose insertion and too loose. These are all unqualified products. Similarly, the length of the cylinder must also be controlled within the allowable error range. Too long or too short will be considered an unqualified product.
