论文部分内容阅读
过去3M4926锉球机锉板的热处理,由于我厂无表面快速加热的专用设备,只好委托外厂进行高周波处理,严重地影响生产进度。去年,在厂革委会的正确领导下,组成了以老工人为主体的“三结合”小组,遵照伟大领袖毛主席的关于“自己动手、丰衣足食”的教导,根据本厂具体条件,自力更生,采用RTX-75.9箱形电炉快速加热淬火（见图）。起重吊车由工字钢轨导和电机减速器组成,初步实现了装炉出炉半机械化。在工艺上,学习了上海地区的经验,进一步完善了我们的工艺规程,加热设备75KW箱式电炉,加热温度950~(+10)℃。入炉前锉板表面用保护剂涂复,保护剂为:硼酸酒精液+少 许黄血盐+Na_2CO_3+固体渗剂。涂层总厚度以不影响快速加热为宜,一般为5～8毫米,装载方式采用专用滑动托架,加热时间40秒/毫米,淬火用水油双液冷却液,10％Na_2CO_3水溶液并通压缩空气,水停时间为1.6～1.7秒/毫米。回火温度,170～180℃,6～8小时,RC62～65。改进后,锉板变形符合要求,硬度较好。
3M4926 rasp file machine past the heat treatment, due to my factory without rapid heating of the surface of special equipment, had entrusted to the factory for high frequency processing, seriously affecting the progress of production. Last year, under the correct leadership of the Factory Revolutionary Committee, a “three-in-one” team composed of old workers was formed. Following the teachings of Chairman Mao, who is the great leader, “Do It Yourself, Wealthy Clothing”, according to the specific conditions of our factory, RTX-75.9 box furnace rapid quenching (see photo). Lifting crane by the I-rail guide and motor reducer, the initial realization of the furnace installed baked semi-mechanized. In the process, learning from the experience in Shanghai, to further improve our process specifications, heating equipment 75KW box furnace, the heating temperature of 950 ~ (+10) ℃. Into the furnace before filing the surface with a protective agent coating, protective agent: boric acid alcohol solution + a little yellow salt + Na_2CO_3 + solid penetration agent. The total thickness of the coating does not affect the rapid heating is appropriate, usually 5 ~ 8 mm, the loading way using a special sliding bracket, heating time 40 seconds / mm, quenching water with a double liquid coolant, 10% Na2CO3 aqueous solution and compressed air , Water stop time is 1.6 ~ 1.7 seconds / mm. Tempering temperature, 170 ~ 180 ℃, 6 ~ 8 hours, RC62 ~ 65. After the improvement, the deformation of the file board meets the requirements and the hardness is better.