摘要
针对真空自耗熔炼大规格(?≥760mm)钛合金铸锭易出现头部缩孔较深、切头量大的问题,分析了缩孔产生的原因,论述了热封顶工艺制定的原则和方法,并据此制定了适合实际生产的热封顶工艺制度。试生产发现,该工艺可显著减小缩孔深度,提高铸锭的成品率。
During Vacuum Arc Remelting process,deeper shrinkage cavity usually appears on the top of the largesize finished titanium alloy ingot,which also causes the high discarding amount of the ends.The reasons causing shrinkage cavity were analyzed,and the principle and method to design the parameters of hot topping were described.Thus,the hot topping system suitable for the production was determined which reduced the depth of the shrinkage cavity and increased the yield rate of the finished ingot greatly.
作者
李莹莹
Li Yingying(Baowu Special Metallurgical Co.,Ltd.)
出处
《特种铸造及有色合金》
CAS
北大核心
2020年第3期324-326,共3页
Special Casting & Nonferrous Alloys
关键词
钛合金
真空自耗冶炼
热封顶
缩孔深度
Titanimu Alloy
Vacuum Arc Remelting
Hot Topping
Depth of Shrinkage Cavity
作者简介
李莹莹,女,1985年出生,工程师,上海(200940),电话:021-26032924,E-mail:740663@baosteel.com。
