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ASTM A456/A456M-2008 大型曲轴锻件的磁粉检查标准规范

ASTM A456/A456M-2008 大型曲轴锻件的磁粉检查标准规范

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【英文标准名称】: Standard Specification for Magnetic Particle Examination of Large Crankshaft Forgings
【原文标准名称】: 大型曲轴锻件的磁粉检查标准规范
【标准号】: ASTM A456/A456M-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: A01.06
【标准类型】: (Specification)
【标准水平】: ()
【中文主题词】:
【英文主题词】: acceptance criteria; barrel forged crankshaft; crankshaft forgings; magnetic particle examination; nondestructive examination ; slab forged crankshaft; Acceptance criteria/testing--metals/alloys; Crankshafts; Magnetic particle inspection; Railroad steel m
【摘要】: 1.1 This is an acceptance specification for the magnetic particle inspection of forged steel crankshafts having main bearing journals or crankpins 4 in. [200 mm] or larger in diameter. 1.2 There are three classes, with acceptance standards of increasing severity: 1.2.1 Class 1. 1.2.2 Class 2 (originally the sole acceptance standard of this specification). 1.2.3 Class 3 (formerly covered in Supplementary Requirement S1 of Specification A 456 x2013; 64 (1970)). 1.3 This specification is not intended to cover continuous grain flow crankshafts (see Specification A 983/A 983M); however, Specification A 986/A 986M may be used for this purpose. Note 18212;Specification A 668/A 668M is a product specification which may be used for slab-forged crankshaft forgings that are usually twisted in order to set the crankpin angles, or for barrel forged crankshafts where the crankpins are machined in the appropriate configuration from a cylindrical forging. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 Unless the order specifies the applicable x201C;Mx201D; specification designation, the material shall be furnished to the inch units.
【中国标准分类号】: H26
【国际标准分类号】: 77_140_85
【页数】: 4P.;A4
【正文语种】: 英语

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ASTM[1] A456A4[1]

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