论文部分内容阅读
用贵阳钢厂提供的5Cr4Mo_3SiMnV和6Cr4Mo_3Ni_2WV两种新工具钢制成多种热锻模具进行轴承毛坯的初步试验。新钢种制成模具使用寿命比老钢种模具寿命长,以冲头、凹模、漏模、芯轴等轴承热锻模具为例,冲头生产轴承套圈20000件比3Cr_2WV老钢种模具提高寿命5倍,凹模生产25000～30000件寿命提高6倍,漏模生产20000—40000件寿命提高10—15倍,套圈扩孔机新轴生产10000—20000件寿命提高3—5倍。列有新钢种的化学成份。介绍了锻造工艺,淬回火工艺。
With the Guiyang Steel 5Cr4Mo_3SiMnV and 6Cr4Mo_3Ni_2WV two new tool steel into a variety of hot forging die preliminary preliminary test bearing. Die made of new steel mold life than the old steel mold life to punch, die, leak-proof, mandrel and other hot forging die, for example, the punch production of 20000 rings than the 3Cr_2WV old steel mold Improve life expectancy 5 times, 25,000 to 30,000 pieces of die production life expectancy increased 6 times, leakage mold production 20000-40000 pieces of life to improve 10-15 times, ring reaming machine new shaft production 10000-20000 life expectancy increased 3-5 times. Listed in the new steel chemical composition. Introduced the forging process, quenching and tempering process.