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一、概论叶片是汽轮机中数量最多,型线最复杂的零件,且材料要求特别严,主要用1X13、2X13不锈钢制造。初期我厂所有叶片都是采用方钢铣制,金属的利用系数仅10～20%左右,机械加工工序又复杂,直接影响生产任务的完成。目前高合金钢材料供应较为紧张,汽轮机的需要又日益增长,因此汽轮机叶片毛坯的供应,必须寻求新的工艺来代替落后的方钢铣削工艺,这对我国汽轮机制造业具有重大意义。经过了一年来的努力,大型叶片已完全取
I. Introduction Blade is the largest number of turbines, the most complex parts of the line, and the material requirements are particularly strict, mainly with 1X13, 2X13 stainless steel. All the blades in our factory are made of square steel, the utilization coefficient of metal is only about 10 ~ 20%, and the machining process is complicated, which has a direct impact on the completion of production tasks. At present, the supply of high-alloy steel materials is relatively tight and the demand for steam turbines is increasing. Therefore, the supply of turbine blade blanks must seek new technology to replace the backward square steel milling process, which is of great significance to China’s steam turbine manufacturing industry. After a year of hard work, large blades have been completely taken