革新前轴承套圈的回火系用一电热干燥箱进行,装出炉很不方便,而且装的量少。由于干燥箱上下温差较大,因而回火工件的质量较差,下面的工件因温度高而变软,上面的因温度低而引起回火不足。革新后与干燥箱比较,提高质量,降低劳动强度,革新前装出炉必须两人,现只要一人按下电钮就行了,比原来提高产量一倍左右,维修简单。 Renovation of the bearing ring before the tempering with an electric oven, loading furnace is very convenient, but less installed. Due to the large temperature difference between the upper and lower oven, tempering the poor quality of the workpiece, the following parts due to high temperature and soft, the above due to low temperature caused by insufficient tempering. After the innovation and drying oven comparison, improve quality and reduce labor intensity, before revamping the oven must be two people, now just press the button on the line, doubling the original output, maintenance simple.