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我厂自1954年来就利用完全退火的球墨铸铁来代替农业机械上全部的可锻铸铁零件和铸钢件,经十年的田间工作考验,证明是完全可行的,但仍然不能避免在退火过程中的变形和严重的氧化皮。因此整形和重清理的工作量极为繁重,生产周期很长。自去年在部分零件上改用韧性铸态球墨铸铁成功后,由于退火变形的废品完全消灭。清理工作量大为减轻,生产周期大大缩短。
I have been using completely annealed nodular cast iron to replace all malleable cast iron parts and castings on agricultural machinery since 1954 and after ten years of field work proved to be perfectly viable but still not able to avoid deformation during annealing And serious scale. Therefore, the workload of shaping and heavy cleaning is extremely heavy and the production cycle is very long. Since last year, some parts in the use of ductile cast ductile iron success, due to annealing deformation of the waste completely eliminated. Significantly reduce the workload of cleaning up, shorten the production cycle.