1978年初我所承接了“粉末冶金高速钢刀具”科研任务,这是一项技术复杂、工作量大的综合性研究课题。我们选定的试验工艺流程是: 熔炼→水雾化制粉→脱水、干燥与筛分→粉末检测→成份→真空退火→冷压型→真空预烧结→热模锻→调整→真空脱氧→装包套→包套封口→热挤压→刀具毛坯→刀具制造棒材→刀具制造 At the beginning of 1978, I undertook the scientific research task of “powder metallurgy HSS tool”, which is a comprehensive research project with complicated technology and heavy workload. We selected the test process is: Melting → water atomization milling → dehydration, drying and screening → powder testing → ingredients → vacuum annealing → cold pressing type → vacuum pre-sintering → hot forging → adjustment → vacuum deoxy → loading Package → package sealing → hot extrusion → tool blank → tool manufacturing bar → tool manufacturing