大型磨辊轴胎模锻模具结构的优化  

Die structure optimization in loose tooling forging process for large grinding roller shaft

作　　者：苏娟华[1] 陈艳伟[1] 史宇麟 陈卓[1] 

机构地区：[1]河南科技大学材料学院,河南洛阳471003 [2]中信重型机械公司,河南洛阳471039

出　　处：《锻压技术》2009年第4期15-18,共4页Forging & Stamping Technology

基　　金：河南科技大学博士科研启动基金资助项目(20060616)

摘　　要：磨辊轴是ATOX型立磨上的重要零部件,法兰形状为矩形,其截面尺寸达1850 mm×1110 mm。采用一般锻造方法,钢锭镦粗直径要达到2900 mm,需用100 t钢锭来生产,已超出目前水压机的锻造能力,因此需要采用胎模锻工艺。由于方角的存在,金属的流动受到影响,为了保证方头部分顺利成形,需对模具结构进行优化。本文运用DEFORM-3D模拟软件对在不同圆角和拔模斜度情况下的方头成形进行模拟,通过分析对比得出较佳的模具结构。锻件试制的合格也证明了模具结构的合理性。Grinding roller shaft is a key part of ATOX grinding roller, which has rectangular flange, and the size of its cross section has reached 1850 mm× 1110 mm. Upsetting diameter of bloom should reach 2900 mm and 100 t bloom should be used if common forge method was used, which beyonded capacity of the pressent hydraulic coropresser, so loose tooling forging process was ernployed. It was difficult to forge because of the corner which limited metal flowing. In order to assure square corrner form successfully, die structure was optimized. Simulation software DEFORM-3D was used to simulate the forming process of square part under different round radius and pattern draft. After analyzing and comparing, the appropriate die structure was found. The eligible forings also proved the rationality of the die structure.

关 键 词：磨辊轴 胎模锻 数值模拟 圆角半径 拔模斜度 

分 类 号：TG316[金属学及工艺—金属压力加工]