In the whole process of parts processing, there will be various requirements and regulations put forward by the user for the parts. So, what are the 5 major specifications for selecting tools when machining metal parts.
First, the strength of the selected tool must be hard and the wear resistance must be within a certain specified range; the tool is used for drilling hard parts materials. Only when its strength exceeds that of the raw material can the drilling be successful. The better the abrasion resistance, the lower the cost of the tool.
Second, the choice of tools need to look at the compressive strength and ductility, hardware parts processing in the tool processing will be subject to a lot of interaction; in the case of contact with the workpiece, but also has a special torque stress effect. Therefore, the tool must have compressive strength and ductility to resist this stress, in order to withstand shock vibration and not easy to break.
Third, the tool's temperature resistance is good, because the mechanical parts processing tool and high-speed workpiece contact, will undoubtedly generate a lot of heat. The heat will cause the tool to deform and affect its performance. Only raw materials that can withstand high temperatures can ensure that the processing will not be easily interrupted by tool damage.
Fourth, it should have excellent thermal conductivity. Too much heat during machining will lead to deformation of parts and workpieces, thus endangering machining accuracy. In addition, it can also endanger the performance of the tool. Therefore, the tool material itself must be able to conduct heat quickly and can immediately transfer the heat out to maintain the raw material of the tool itself and the part.
Fifth, the workmanship is better, where the workmanship refers not only to the quality, but also to the tool and other characteristics. For example, the performance of the quenching and tempering level, such as the ability to work under forced conditions to resist deformation. There is also the forging performance of the raw material itself in the manufacturing process, etc.