ZG270-500大臂架铸造工艺优化
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摘要
针对高速工程车大臂架铸造合格率不高问题,对大臂架的原铸造工艺方案进行分析,并运用AnyCasting进行数值模拟。对分型面、浇注系统、冒口及冷铁设置进行优化改进,并对优化后的工艺方案进行数值模拟验证。模拟结果表明,铸件按工艺设计进行顺序凝固,铸造缺陷可以解决。经过小批量生产验证,铸件出现铸造缺陷的概率大幅降低,合格品率由70%提高到92.5%。
Aiming at the low qualification rate of high-speed engineering truck arm bracket castings, the original casting process of the arm was analyzed and simulated using AnyCasting software. Based on the simulation results,the parting face, gating system, riser and chill were improved, and the optimized process was verified by numerical simulation. The simulation results show that the directional solidification for the arm casting can be realized, and the casting defects can be removed. Through verification in small batch production, the casting defects are greatly reduced, and the qualified product rate is increased from 70% to 92.5%.
Aiming at the low qualification rate of high-speed engineering truck arm bracket castings, the original casting process of the arm was analyzed and simulated using AnyCasting software. Based on the simulation results,the parting face, gating system, riser and chill were improved, and the optimized process was verified by numerical simulation. The simulation results show that the directional solidification for the arm casting can be realized, and the casting defects can be removed. Through verification in small batch production, the casting defects are greatly reduced, and the qualified product rate is increased from 70% to 92.5%.
引文
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[2]俞基浩,赵静,张浚哲,等.大型钢锭凝固过程热模拟方法[J].铸造,2015,64(8):754-757.
[3]王晓花,厉英.钢锭凝固过程温度场数值模拟[J].铸造,2013,62(5):410-419.
[4]张江城,王伟奇,严文超,等.复杂球墨铸铁底座的铸造工艺设计[J].热加工工艺,2016,45(19):90-93.
[5]吴彦文,申荣华,王伟奇,等.铸铁件短流程熔炼应用中的问题及对策[J].铸造技术,2012,33(5):613-614.
[6]孙逊.铸钢件充型和凝固过程数值模拟技术[D].哈尔滨:哈尔滨工业大学,1999.
[7]郭继彬.支架压铸件数值模拟及工艺研究[D].沈阳:沈阳理工大学,2011.