论文部分内容阅读
为了降低能耗和节省工时,库片斯克铸造厂将许多可锻铸铁件改为球铁件。该厂与拖拉机农业机械研究所共同研究并掌握了。用含有墨化剂和球化剂的变质剂在型内处理灰铸铁的工艺。将金属流充填型腔和溶解球化剂的过程合二为一,并保证得到具有铁素体组织的铸件。采用这种方法可以节约1/3~1/2的变质剂。该工艺可为现有车间的生产工艺所采纳,不需额外的设备。研究表明,由于变质剂溶解过程遵循边界扩散规律。为了保证变质剂稳定地为溶体所吸收,在整个浇注过程中,必须使变质剂的溶解速度为恒定。破坏这种条件,将导致材质机械性能值发生极大的波动。
In order to reduce energy consumption and save labor, Kusakasi foundry changed many malleable cast iron parts to ductile iron parts. The plant and tractor Agricultural Machinery Research Institute jointly studied and mastered. Treatment of gray cast iron in molds with a modifier containing an inking agent and a nodulizing agent. The process of filling the cavity with the metal stream and dissolving the nodulizer is combined to ensure a cast with a ferritic structure. Using this method can save 1/3 ~ 1/2 of the modifier. The process can be adopted for the existing workshop production process, without additional equipment. The research shows that the dissolution process of the modifier follows the rule of boundary diffusion. In order to ensure that the modifier is stably absorbed by the solution, the rate of dissolution of the modifier must be constant throughout the casting process. Disruption of this condition will result in significant fluctuations in the material’s mechanical properties.