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挡料圈是Φ2.8M烘干兼粉碎煤磨机上要求较高的ZGMn13铸件,重量为126.5kg。该件在生产之初因裂纹缺陷造成批量废品,后经采取工艺措施后消除。挡料圈的铸造工艺简图及裂纹部位见图。
The retaining ring is Φ2.8M drying and grinding coal grinding machine ZGMn13 castings require a higher weight of 126.5kg. The piece at the beginning of the production due to crack defects caused by bulk scrap, after the adoption of technical measures to eliminate. Block ring casting process diagram and crack site shown in Figure.