大型耐热铸铁阀板铸造.pdf

学兔兔 铸 造 Ju1．2014 · 718· FOUNDRY VOI．63 NO．7 大型耐热铸铁阀板的铸造 朱 苏 (石家庄恒业机电有限公司，河北石家庄 050000) 摘要：采用砂型铸造工艺试制材质为RTCr大型矩形阀板时，阀板产生了变形、冷隔等铸造缺陷。为解决上述缺陷， 缩短试制时间和减少费用，采用了基于ANSYS数值分析及以蜡代替铁，以蛭石代替型砂及以凡士林代替粘结剂的工 艺模拟试验。将模拟试验工艺参数运用到实际铸造生产中，解决了大型矩形阀板变形缺陷；采用适当倾斜浇注方 法，消除了冷隔缺陷：最终成功生产出了大型矩形阀板。 关键词：耐热铸铁；矩形阀板；变形；冷隔 中图分类号：TG143．49 文献标识码：B 文章编号：1001—4977(2014)07—0718—03 Cast of Large·-Scale Heat-·Resistant Cast I ron Valve Plate ZHU Su (Shijiazhuang Hengye MechanicalElectronic Engineering Co．，Ltd．，Shijiazhuang 050000，Hebei，China) Abstra~：Casting defects such as distortion and cold lap occurred in the castings when large—scale rectangular valve plates were manufactured by using of sand casting process．The numerical simulation was carried out by using ANSYS software．With the wax acting as meta1．vermiculite acting as sand and vaseline as adhesive。 process simulation experiment was done to solve the above casting defects．shorten仃ial manufacture time and decrease cost．Atier the process parameters of the simulation experiment were applied to the practice production，distortion defect of the casting was solved．The cold lap was removed by using of properly tilting pouring method．Finally,the large—scale rectangular valve plates were produced successfully． Key words：heat—resistant cast iron；rectangular valve plate；distortion；cold lap 1 阀板试生产情况 高温风进阀的耐热铸铁 (牌号为RTCr)阀板大致 长2．8 m，宽1．6 m，主要壁厚30 mm。阀板宽度两侧有 对称的6条矮筋，毛坯重2．364 t，见图1、图2。 幽2 阀板变形