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一、前言滚动轴承工作时,钢球与套圈滚道呈点接触。其接触部分承受反复交变应力。通带为100～300kg/mm~2,最高可达500kg/mm~2。存这样的应力下钢球与套圈滚道表面最容易引起接触疲劳破坏(龟裂和剥落)。我厂制造钢球系用GCr15钢。钢球热处理采用不锈钢网篮装筐,在盐浴炉内加热840℃,人工提出倒入机械搅拌碳酸钠水溶液淬火槽中,让钢球沿水中滑板自身滚动淬火。最后取出除盐,经150℃3h低温油同
I. Introduction Rolling bearing work, the ball and ring raceway was point contact. The contact part withstand repeated alternating stress. Passband 100 ~ 300kg / mm ~ 2, up to 500kg / mm ~ 2. With such stress, the ball and ring raceway surfaces are most likely to cause contact fatigue damage (cracking and spalling). Our factory manufacture GCr15 steel ball system. Ball heat treatment using stainless steel basket baskets, heated in a salt bath furnace 840 ℃, manually put into mechanical stirring aqueous sodium carbonate quenching tank, so that the ball along the water slide itself quench. Finally, remove the salt, after 150 ℃ 3h with the same low-temperature oil