塑料模具钢大模块生产工艺分析

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【英文篇名】 Manufacture Process Analysis of Heavy Die Block for Plastic Mould Steel
【作者中文名】 李雄; 张玉龙; 续维; 薄鑫涛;
【作者英文名】 LI Xiong1; ZHANG Yu-long2; XU Wei3; BO Xin-tao4（1 R & D Center of Special Steel Business Unit; Baoshan Iron & Steel Co.; Ltd.; Shanghai 200940; China; 2 Baosteel Research Institute; Shanghai 201900; 3 Manufacturing Management Department of Special Steel Business Unit; 4 Forging Factory of Special Steel Business Unit; China）;
【作者单位】 宝钢股份特钢事业部技术中心; 宝钢研究院; 宝钢股份特钢事业部制造部; 宝钢股份特钢事业部锻造厂;
【文献出处】 材料工程, Journal of Materials Engineering, 编辑部邮箱 2011年 01期  
期刊荣誉：中文核心期刊要目总览  ASPT来源刊  CJFD收录刊
【关键词】 塑料模具钢; 大模块; 浇注; 锻造; 热处理;
【英文关键词】 plastic mould steel; heavy die block; teeming; forging; heat treatment;
【摘要】 针对国内塑料模具钢大模块探伤合格率不高的问题,分析了国内外的制造工艺,指出了目前浇注、锻造、热处理过程中可能出现的问题。结果表明:真空上注法可以改善铸锭心部组织的致密性,通过辅助手段可以提高上注法的表面质量;锻造加热温度的高低应视锭坯的内部质量和锻造设备吨位而定,保证钢锭心部变形有利于钢锭心部缺陷愈合,锻后快冷会增加内应力从而使得缺陷变得严重;鉴于大模块的去氢退火效果不佳,氢的去除放在冶炼和浇注阶段较为合理;淬火前的软化退火或去应力退火以及淬火后不少于2次的回火有利于阻止裂纹的萌生和扩展。
【英文摘要】 Aiming at low qualification rate based on ultrasonic detection,the foreign and domestic manufacture processes for heavy die block of plastic mould steel were analyzed,and domestic current teeming,forging and heat treatment processes were perhaps imperfect.The results show that the vacuum top-pouring can make internal microstructure to be more compact contrasted with bottom-pouring and enhance ingot surface quality by supplementary means,to determine forging temperature should be according to internal qualit...
【DOI】 CNKI:SUN:CLGC.0.2011-01-012