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油泵是电极挤压工艺中的关键设备。实践证明,油泵选型是否合理关系到挤压机能否正常运行,所压制电极生坯质量能否达到标准的一个重要问题。 1976年初,由冶金部钢铁司监制的1500吨电极挤压机,主缸要求压力为320公斤/厘米~2,预压一般也要在220公斤/厘米~2左右。但过去选用某厂制造的250YCY14—1B型轴向柱塞泵,由于按15％变量曲线配备的变量弹簧,致使压力大于200公斤/厘米~2时变量机构便动作失灵,造成电动机超负荷运行,严重影响生产。
The pump is the key equipment in the electrode extrusion process. Practice has proved that the selection of the pump is reasonable or not related to the normal operation of the extruder, the quality of the pressed electrode can meet the standards of an important issue. In early 1976, the 1500-ton electrode extruder, produced by the Steel Division of the Ministry of Metallurgy, required a pressure of 320 kg / cm ~ 2 for the master cylinder and a pre-pressure of about 220 kg / cm ~ 2. However, the past selection of a factory-made 250YCY14-1B-type axial piston pump, due to the variable spring with 15% variable curve, resulting in pressure greater than 200 kg / cm ~ 2 when the variable mechanism will malfunction, causing the motor overload operation, Seriously affect the production.