NY12V240ZJB主轴螺栓拉伸工艺研究

Research on Pretensioning Process of NY12V240ZJB Spindle Bolt

对NY12V240ZJB柴油机主轴螺栓拉伸紧固工艺进行分析,选择螺栓预拉伸法,通过设备改制及拉伸试验,确定了拉伸工艺方案可行性,并完善了工艺文件参数,用于指导现场完成主轴承盖装配工序,紧固效果良好。

The pretensioning fastening process of NY12V240ZJB diesel engine spindle bolt is analyzed.The bolt pretensioning method is selected.Through the equipment modification and pretensioning test,the feasibility of the pretensioning process plan is determined and the processing parameters are improved.The main bearing cap assembly process is completed on site,and the fastening effect is good.