标准编号:	TB/T 1779-1993
中文名称:	道岔钢轨件淬火技术条件
英文名称:	Technical Specification for Quenching of Turnout Steel Rails
中标分类:	J36    热处理
行业分类:	TB    铁路运输行业标准
发布机构:	中国人民共和国铁道部
发布日期:	1993-4-22
实施日期:	1993-10-1
标准状态:	superseded
被新标准替代:	TB/T 2344.2-2020 钢轨 第2部分：道岔用非对称断面钢轨
被替代日期:	2021-7-1
替代旧标准:	TB 1779-1986
翻译语言:	英文
文件格式:	PDF

1 Subject Content and Applicable Scope This standard specifies the technical requirements, test methods and inspection rules for quenching of rail parts such as switch rail and stock rail of trip switch at turnout, as well as wing rail, point rail and guard rail of frog, etc. This standard is applicable to the quenching of turnout rail parts. 2 Normative References GB 226 Etch Test for Macrostructure and Defect of Steels GB 230 Metallic Materials – Rockwell Hardness Test YB 28 Metal – Inspection Method of Microstructure 3 Technical Requirements