With the continuous development of manufacturing technology, a variety of new materials have been developed and widely used. Many of these new materials are difficult to process, such as zinc alloy and composite materials. On the one hand, it greatly improves the product performance, on the other hand, it also brings great difficulties to the processing and manufacturing. It is of great significance to take corresponding measures to complete the task with high efficiency, low cost, quality and quantity, meet the processing requirements and meet the needs of modern science and technology and industrial development.
The higher the strength or hardness of zinc alloy material, the greater the cutting force, the higher the cutting temperature, the tool wear will be aggravated. In addition, when cutting hard materials, the knife – chip contact length is short, cutting force and cutting heat are concentrated in the vicinity of the cutting edge, it is easy to make the cutting edge peeling off, even collapse edge, the carbide and ceramics and other materials of brittle tool material is particularly obvious, therefore, the material of the cutting machinability is poor.
The greater the plasticity and toughness of zinc alloy materials, chip deformation, the more cutting heat, chip is also easy to bond with the tool, therefore, will increase tool wear. However, if the plasticity and toughness of the workpiece material are too small, the tool-chip contact length becomes very short, and the tool wear will be serious. So plastic and toughness is too large or too small workpiece material cutting machinability is poor.
The better the heat resistance of zinc alloy material, the higher the strength and hardness can be maintained at high temperature, and the cutting will be very difficult. The stronger the abrasion ability of zinc alloy material, the greater the tool wear, the worse the machinability. The smaller the thermal conductivity of zinc alloy material, the cutting heat is not easy to transfer, the high cutting temperature, the serious tool wear, the worse the cutting machinability.
Post time: Oct-12-2022