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我厂550轧机主传动减速机箱体接合面处的长期漏油问题一直未得到彻底解决,经过分析认为:主要由于箱体接合面的加工精度未达到图纸要求;轧钢时的强大冲击负荷使联接螺栓松动破坏了该处的密封;密封设计不够完善以及箱内形成正压等原因造成。 在运转时,箱体内油温升高,空气膨胀,另外从油管带进一部分空气,在箱体顶部虽有1～2个出气孔,但常由于堵塞或出气不畅,很难使箱内与箱外的气压保持平衡,往往使箱内形成正压。这种正压现象可从轴承座上盖的测温孔和联接螺栓孔中冒出润滑油得到证实。
The long-term oil leakage problem at the junction of the main drive reducer box of our mill 550 rolling mill has not been completely solved. According to the analysis, it is mainly because the machining accuracy of the box joint surface does not meet the drawing requirements; the strong impact load during rolling makes the connecting bolt Loose damaged the seal here; imperfect sealing design and the formation of positive pressure inside the box and other causes. In operation, the tank temperature rise, the expansion of air, while the other part of the air from the tubing, although the top of the box although 1 to 2 vents, but often due to blockage or poor gas, it is difficult to make the box with The pressure outside the box to maintain balance, often to form a positive pressure inside the box. This positive pressure phenomenon can be confirmed from the temperature measurement hole and bearing bolt holes in the bearing housing cover.