球阀阀体的两种多向模锻成形工艺探究
Forging & Stamping(2023)
Abstract
球阀是由阀体、球芯、阀座、阀杆、支架以及驱动装置等零件组成,工作原理是靠旋转球芯使阀门畅通或关闭.球阀阀体传统的制造工艺为铸造成形,但是铸造件存在着疏松、缩孔、气孔和枝晶等缺陷,对恶劣工况条件下的阀门,往往难以达到使用要求.为了提高球阀阀体的综合力学性能,众多企业和学者积极探究球阀阀体的锻造成形工艺,且多以自由锻、模锻为主,原材料浪费严重、机加工成本较高.
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