铸钢件锚的动态顺序凝固浇冒口设计.pdfVIP

维普资讯 学兔兔 Ju1．2008 铸 造 VOI．57 NO．7 FOUNDRY ·737· 铸钢件锚的动态顺序凝固浇冒口设计 李宏兴 (清苑县朝阳铸造有限公司，河北清苑071 100) 摘要：按传统的铸钢件冒口设计工艺方法设计了铸钢件锚的两种生产工艺。传统设计工艺是冒口必须放在铸钢件的热 节处，冒口模数必须大干铸件模数，或者冒口直径必须大干铸件热节圆直径，工艺出品率仅为47％和53％。新的设计工 艺是冒口离开热节而又靠近热节，四件合用一个浇冒口，提高了冒口温度，形成从铸件远端到冒口颈再到冒口的温度 梯度和凝固顺序，以动态顺序凝固提高冒口的补缩能力，工艺出品率提高到74．4％。 关键词：铸钢件；冒口；热节；补缩 中图分类号：TG244+．4 文献标识码：B 文章编号：1001—4977(2008)07—0737—03 Design of Gating and Feed ing System for Dynam ic Directional Solid ification of Steel Casting Anchor LI Hong-xing (Qingyuan Chaoyang Found~C0．，Lfd．，Qingyuan 071 100，Hebei，China) Abstract： TwO kinds of casting methods for steeI casting-anchor were designed according to traditionaI feeding system designing method，i．e．the riser must be put 0n hot．spot of steeI casting， and the modulus of riser must be Iartier than that of casting．or the diameter of riser must be Iarger than that of steeI casting hot-spots．The pattern yields for above two methods were only 47％ and 53％．The improved casting method iS that the riser deviates fr0m the hot．spot but close to it．and one gating and feeding system serves four steeI castings at one time．By this method the riser temperature was raised，thus forming temperature gradient and solidification sequence fr0m casting。S distant end to the riser’S neck then to the riser．The feeding ability of riser iS increased by dynamic directionaI solidification．and the pattern yield iS raised to about 74％． Key words：steeI casting；riser；hot