论文部分内容阅读
提高热变形冲压模具寿命的有效途径之一是强化模具工作部分的表面,例如渗铬。 乌克兰特殊钢科学研究所同某电缆厂一起研究出了锻压模具的真空扩散渗铬工艺。 在1×10~(-3)毫米水银柱的真空中按两种工艺方案对锻模钢4X5MφC、3X3M3φ、3X2B8φ、4X4M2BφC、5X3B3MφC和4X3M2BφГC进行了渗铬的试验研究:1200℃,8～10小时;11100℃,8～10小时并预先渗碳。利用全苏国家标准(ГOCT)4757—67规定的
One of the effective ways to increase the life of hot stamping dies is to strengthen the surface of the working part of the mold, such as chromizing. Ukrainian Special Steel Institute of Science with a cable factory together developed a forging die vacuum diffusion chromizing process. The experimental study of 4X5MφC, 3X3M3φ, 3X2B8φ, 4X4M2BφC, 5X3B3MφC and 4X3M2BφГC forged die steel was carried out in two steps in a vacuum of 1 × 10 ~ (-3) mm mercury column: 1200 ℃, 8 ~ 10 hours ; 11100 ℃, 8 ~ 10 hours and pre-carburizing. Use of all-Soviet national standards (ГOCT) 4757-67 provides