作废 JB/T 9746.2-1999
船用齿轮箱 灰铸铁件 技术条件 船用齿轮箱 灰铸铁件 技术条件 Gray iron castings for marine gearboxes -- Specifications
发布日期:1999-09-17
实施日期:2000-01-01
分类信息
标准简介

本标准规定了船用齿轮箱灰铸铁件的材质、尺寸公差、机械加工余量、重量偏差、铸造缺陷的允许范围以及相应的试验方法与检验规则。 本标准适用于砂型铸造的船用齿轮箱灰铸铁件,其它方法铸造的灰铸铁件也可参照使用

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最后更新时间 2025-08-30