Through the suitable technology parameter option of heat treatment, we carry out the heat treatment of mould and analyse metallographic organization, hardness and wear-resistance etc.
通过合适的热处理工艺参数选择，进行模具的热处理，并进行了金相组织、硬度、耐磨性等性能分析。
2
The influences of cooling rate of the mould, pouring temperature, nodularity and chemical composition on hardness of roll body were described, and the measures for solve problems were proposed.
对铸型冷却速度、浇注温度、球化率和化学成分对辊身硬度的影响进行了论述，并提出了解决问题的措施。
3
The results show that the pre-hardened plastic-mould steel belongs to a little low machinability steel because of much hard inclusion existing in microstructure and its high strength and hardness.