低合金钢液金属型加压充型能力的试验研究.pdfVIP

学兔兔 铸 造 Apr．2013 · 330· F0UNDRY VO1．62 NO．4 低合金钢液金属型加压充型能力的试验研究 张海英 ，白 玲 ，邢书明 (1．郑州职业技术学院材料工程系，河南郑州450121；2．北京交通大学机电学院，北京100044) 摘要：钢铁材料在金属型内的充型能力直接决定了铸件的成形质量。通过对低合金钢液在金属型中的加压充型能力 的正交试验研究发现，充型压力越大，充型速度越小，低合金钢液的充型能力越好；加压延迟时间越短，即浇注温 度相对越高，液态合金熔体充型能力越好。充型速度是影响低合金钢液加压充型能力的显著影响因素，充型压力次 之，充型压力和充型速度两者的交互作用与加压动作延迟时问的影响作用相差不多。 关键词：低合金钢；金属型；充型能力；工艺参数 中图分类号：TG249．2 文献标识码：A 文章编号：1001—4977(2013)04—0330—03 Experimental Study on Pressurized Filling Capacity of Low-Alloy Steel in Metal Mold ZHANG Hai—ying ，BAI Ling ，XING Shu-ming。 (1．Department ofMaterials Science and Engineering，Zhengzhou Technical College，Zhengzhou 450121，Henan，China 2．School ofMechanical，Electronic and Control Engineering，Beijing Jiaotong University，Beijing 100044，China) Abstract：Quality of castings of low．alloy steel iS directly determined by filling capacity in metal mold．By experimental study on pressurized filling capacity oflow．alloy steel in metal mold．it was found that the greater offilling pressure，the smaller offilling speed，the better ofthe filling ability；the shorter ofpressure delay time， which meant the higher ofpouring temperature，the beRer ofthe filling ability．Filling speed was the significant factors that affected the filling ability,and filling pressure was second，effect ofinteraction offilling pressure and filling speed was the same as that ofpressure delay time approximately． Key words：low alloy steel；metal mold；filling capacity：process parameters 合金熔体的充型能力决定铸件是否能完整成形和