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T611H镗床的圆锥齿轮具有九个楔牙齿,由于长期传递扭矩,楔牙的两侧工作面严重磨损,致使工作时互相打滑。以往我们大修时,遇到这种情况便更换新备件。如今,为节约原材料,修旧利废,缩短大修周期,我们决定进行堆焊修复。修复该零件的主要困难是:①由于焊接热的影响,引起零件变形,使几何精度超差;②如果焊接规范不当,则降低硬度,使零件丧失原有的机械性
T611H boring machine bevel gear with nine wedge teeth, due to the long-term transmission torque, the wedge on both sides of the face serious wear and tear, resulting in work skidding with each other. In the past, when we overhauled, we encountered a change of new spare parts. Today, in order to save raw materials, repair old waste, shorten the overhaul cycle, we decided to surfacing repair. The main difficulties in repairing this part are: (1) the deformation of the part is caused by the influence of welding heat, and the geometric accuracy is out of tolerance; (2) if the welding specification is not proper, the hardness is reduced and the original mechanical part