论文部分内容阅读
二、工作原理:45#钢的淬火温度为840℃,而采用盐水时淬火温度为600℃～700℃,硬度可达 HRC45以上,并减少由于淬火温度过高对已加工表面光洁度的破坏和马氏体针叶粗大三、操作方法:火焰淬火是利用氧气—乙炔燃烧火焰的高温来进行快速加热,使工件表面快速达到淬火温度:随后进行快速冷却,使工件表面淬硬。心部仍保持原来的组织结构。焊嘴要宽而细,达到火焰面积大工件表面加热均匀。
Second, the working principle: 45 # steel quenching temperature of 840 ℃, and the use of salt water quenching temperature of 600 ℃ ~ 700 ℃, the hardness of up to HRC45 and reduce the quenching temperature is too high on the finished surface finish damage and horse Third, the method of operation: Flame quenching is the use of oxygen - acetylene combustion flame to the rapid heating of high temperature, the workpiece surface quenching temperature quickly reached: followed by rapid cooling, the workpiece surface hardening. Heart still maintain the original organizational structure. Welding nozzle to be wide and fine, to achieve a large flame area of the workpiece surface heating evenly.