浇注温度和碳当量对挂钩铸件缩孔的影响  

Effect of Pouring Temperature and Carbon Equivalent on Shrinkage Defects of Hook Casting

作　　者：钱冬冬 程兆虎[1] 周绍雷[1] 胡平 张金雨 QIAN Dongdong;CHENG Zhaohu;ZHOU Shaolei;HU Ping;ZHANG Jinyu(Hefei Casting and Forging Factory,Anhui Heli Co.,Ltd.,Hefei 230601,China)

机构地区：[1]安徽合力股份有限公司合肥铸锻厂,安徽合肥230601

出　　处：《铸造技术》2022年第1期59-61,共3页Foundry Technology

摘　　要：运用MAGMA模拟了挂钩铸件在不同碳当量和不同浇注温度对产生缩孔的倾向,分析了碳当量和浇注温度变化引起孔隙率变化的原因,并根据浇注温度和碳当量最佳工艺参数进行实际生产验证。结果表明,随浇注温度上升孔隙率先减小后增大再减小,1 380~1 400℃孔隙率较低;随着碳当量的提高,孔隙率呈减小趋势,碳当量CE4.5%~4.7%较合适,挂钩铸件无缩孔缺陷。MAGMA was used to simulate the tendency of shrinkage cavity of hooks castings under different carbon equivalent and different pouring temperature, and the reason of porosity change caused by the change of carbon equivalent and pouring temperature was analyzed. The actual production was verified according to the best pouring temperature and carbon equivalent process parameters. The results show that with the increase of pouring temperature, the porosity firstly decreases, then increases and then decreases, and the porosity is lower at 1 380 ℃ to 1 400 ℃. With the increase of carbon equivalent, the porosity tends to decrease, and the carbon equivalent CE4.5%~4.7% is suitable, and there is no shrinkage defects in hook casting.

关 键 词：缩孔 浇注温度 碳当量 孔隙率 

分 类 号：TG255[金属学及工艺—铸造] TG245