Product Code:SAE USCAR5-3
Title:AVOIDANCE OF HYDROGEN EMBRITTLEMENT OF STEEL
Issuing Committee:
Scope:This standard outlines the conditions that enhance the risk of hydrogen embrittlement of steel and define the relief procedures required to minimize the risk of hydrogen embrittlement. It is intended to control the process.1.1 Hydrogen embrittlement of steel, which can cause brittle fractures under stress, occurs as a result of the absorption of hydrogen during cleaning, phosphate coating and plating processes. The susceptibility to hydrogen embrittlement increases with increasing stress (internal or externally applied stress) and increasing material strength.1.2Hardness readings in this specification are in Vickers scale. SAE J417 should be referred to for conversion to other scales.This standard outlines the conditions that enhance the risk of hydrogen embrittlement of steel and define the relief procedures required to minimize the risk of hydrogen embrittlement. It is intended to control the process.1.1 Hydrogen embrittlement of steel, which can cause brittle fractures under stress, occurs as a result of the absorption of hydrogen during cleaning, phosphate coating and plating processes. The susceptibility to hydrogen embrittlement increases with increasing stress (internal or externally applied stress) and increasing material strength.1.2Hardness readings in this specification are in Vickers scale. SAE J417 should be referred to for conversion to other scales.

标准名称：	组合机床通用部件 多轴转塔动力头 参数和尺寸
中标分类：	机械 >> 金属切削机床 >> 组合机床
ICS分类：	机械制造 >> 机床装置 >> 其他机床装置
替代情况：	JB 2462-78
发布部门：	全国金属切削机床标委会组合机床分会
发布日期：	1999-05-20
实施日期：	2000-01-01
首发日期：	1900-01-01
作废日期：	1900-01-01
归口单位：	全国金属切削机床标委会
出版日期：	1900-01-01
页数：	4页

JB/T 2462.1-1999 本标准是对 JB 2462-78《组合机床通用部件 多轴转塔动力头参数、互换尺寸》的修订，仅按有关规定作了编辑性修改，主要技术内容未改变。 本标准规定了组合机床多轴转塔动力头系列参数和互换尺寸。 本标准适用于转塔式组合机床作其自动线的多轴转塔动力头。 本标准于 1978 年首次发布。

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