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沈阳、哈尔滨、长春三市第三次铸造学术讨论会于1983年8月22日至8月26日在长春召开.参加会议的代表共126人.共收到学术论文65篇.沈阳20篇、哈尔滨17篇、长春28篇.其中铸钢、铸铁方面论文21篇;铸造工艺、造型材料、铸造生产机械化、自动化方面论文23篇;特铸、有色、测试方面论文21篇.这些论文的内容都紧紧围绕着提高铸件质量和经济效益,紧密结合生产实际,对生产有一定的指导意义. 相似文献
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1.IntroductionMedium Mn steel was developed be-cause the wear resistance of Hadfield steel(Mn13)is poor under low or medium im-pact and extrusion abrasion[1-4].In theforegoing investigations[2-4]we found thatwith the increase of C content,theneedle-like and network carbide in mediumMn steel increased(as shown in Fig.1(a)and(c)).Although its wear resistance was largelyimproved,its impact toughness was greatlydecreased.In order to increase toughness,along-term high temperature heat-treatmentwas needed.But the treatment caused cracks 相似文献
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