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涡轮螺栓是我公司引进法国的涡轴8发动机上的一个关键零件.其形状和加工要求如图1. 该零件材料为镍基合金Ni—19Cr17Co4MO3Al3Ti.经热处理后强度很高.车铣加工粘刀非常厉害,刀子磨损特别快,磨削加工时去余量0.03～0.05毫米就要修整砂轮,又加之零件又细又长,两处小外圆只有φ11毫米,容易变形.这么小的内螺纹在国内还没有听到哪家工厂磨过,成了加工关键.我们加工的头批零件通过法国考核和试车全部合格.我们采用的办法是:将国产S7332螺纹磨床稍加改装.即增加冷却液压力泵系统,调成压力5～10公斤,以便于充分冷却;将原来的内螺纹磨具换成高频
Turbine bolt is a key part on our company’s introduction of France’s turboshaft engine 8. Its shape and processing requirements are shown in Figure 1. The material of this part is Ni-19Cr17Co4MO3Al3Ti nickel alloy. High strength after heat treatment. Very powerful, the knife wear particularly fast, the grinding process to 0.03 to 0.05 millimeters remaining dressing dressing wheel, plus the parts are thin and long, two small cylindrical only φ11 mm, easily deformed. Such a small internal thread in Domestic factories have not heard of grinding, has become the key processing. We process the first batch of parts through the French assessment and test all qualified. We use the method is: a slight modification of the domestic S7332 thread grinder that is to increase the cooling fluid pressure Pump system, transferred into a pressure of 5 to 10 kg, in order to fully cool; the original internal thread grinding replaced by high-frequency