Blank and the material of shaft parts

Axial parts need to master the blank blank axial parts and materials and data 1. Axial gap selection bar, forging blank production mode, etc. About outside diameter differs a little shaft, shaft parts can be applied according to the students can request, consumption data types, equipment technical conditions and structure. General is given priority to with bar; But on outside diameter differ big ladder shaft or important, often choose forgings, such already save construction materials and reduce engineering mechanical design processing workload, but also by improving the mechanical performance of the system in our country. There are two types of free forging in the forging and forging blank. Small batch use free forging, more consumers depends on the scope of the consumer. A large amount of use a lot of forging elapsed time. 2. Shaft axial parts material should choose according to different conditions and application requirements of different materials, different heat treatment standard ( Such as tempering, normalizing, quenching and so on. ） To obtain a certain strength, toughness and wear resistance. The price is low, the quenched and tempered ( Or normalizing) After the 45 steel shaft parts is a common material. Cutting performance is good, can obtain the comprehensive mechanical properties such as high strength, high toughness. Surface hardness after quenching can reach 45 ー 52 HRC such steel after tempering and quenching, 40 cr alloy such as structural steel is suitable for our country medium accuracy and speed requirements higher axial parts. With development of comprehensive utilization of good mechanical performance of the system. Up to 50? 58 HRC surface hardness and fatigue characteristics and good wear resistance, high temperature bearing steel and spring steel 65 mn GCr15 steel hardening and induction hardening of high resistance. High precision axis can be created. Not only we can obtain high surface hardness, fine processing of machine tool spindle ( For example, by grinding machine spindle, coordinates, using boring machine spindle control) Can choose 38 crmoa IA nitrided steel. This kind of steel after tempering and appearance and nitride. And can insist on soft core, good toughness and impact resistance economy. Temperature quenching and carburizing steel armor, have little impact in the process of heat treatment, hardness higher features. A: shaft current is harmful to the bearings how next up: none