METALLURGICAL REQUIREMENTS FOR HEAT TREATED COMPONENTS热处理的冶金要求
1 SCOPE
1.1 This specification defines the metallurgical requirements applicable to five general types of heat treatment process commonly ud in achieving the properties required in Dana, SHABD, components for their proper functioning. The types are covered within individual ctions defined as follows:
本标准定义了五种类型热处理工艺的冶金要求，这些热处理工艺是DANA、SHARD在设计中，为达到它们本身的产品功能一般采用的方法，这五种类型如下：
GAS CARBURIZE气体渗碳
CARBONITRIDE碳氮共渗
FERRITIC NITROCARBURIZE铁索体氮碳共渗（气体软氮化）
INDUCTION HARDEN感应淬火
DIRECT HARDEN直接淬火
1.2 Requirements in this document are intended to apply to all current and new components for which SHAES174 is referenced on the Engineering drawing. 对于当前的和新增零部件工程图设计，这些要求可参照SHAES174标准的规定。It is the responsibility of the heat treater to consult specific part drawings for any special requirements or restrictions作为热处理者的责任，就是针对特定的要求. 和限制来考虑特定的零件图设计。 Should a disagreement ari between the drawing and specification requirements, Product Engineering will determine which shall govern.
对于零件图纸和特定的要求之间的有争议的，产品设计工程师可以决定哪一个占据主导地位。
Note: This document replaces Eaton TES-003 issued 9/30/81. 本标准取代81年9月30日发布的Eaton TES-003标准
2 APPLICABLE DOCUMENTS
2.1 ASTM E112 Evaluation of Austenitic Grain Size奥氏体晶粒度的评估
2.2 ASTM E18 Rockwell Hardness Testing of Metalsadvice用法金属洛氏硬度测试方法
2.3 ASTM E140 Hardness Conversion Charts硬度换算表
2.4土耳其旅游签证 ASTM E384 Microhardness Testing, Knoop and Vickers努氏和维式显微硬度测试方法
2.5 SAE J417 Hardness Tests硬度试验
2.6 SAE J423 Measuring Ca Depth, Recommended Practice硬化层深度的测量规程
2.7 SAE J864 File hardness, Recommended Practice锉刀法硬度操作规程
2.8 SHAES271 Post Heat Treatment Gear Tooth Finishing修正齿轮的最终热处理
2.9 STD-013 Metallurgical Standard for Heat Treated Components热处理的冶金要求
2.10 STD-014 Gearing 齿轮标准
2.11 QS-003 SHABD Quality Policy Manual, Rev. 1, Dated 2/19/99 SHABD品质安全手册
2.12 QSR-100 Supplier Quality Assurance Requirements供应商质量保证要求
3 GAS CARBURIZE气体渗碳
3.1 PROCESS DESCRIPTION过程描述
3.1.1 Gas carburizing is defined as a heat treatment applied to steel in which carbon is diffud into the surface from a gaous atmosphere in a batch or continuous furnace at a temperature within the austenitic pha region. 气体渗碳是指在奥氏体化温度阶段，在单炉或连续炉中将气态气氛中的碳原子扩散到钢铁表面层的一种热处理工艺。 Subquent to carburizing, the part is quenched in a liquid with a heat extraction capability (quench verity) appropriate to produce the required properties, while avoiding cracking and excessive distortion. 渗碳后零件需要在冷却槽（一种抽热式装置）
（激烈淬火装置）的液体中进行淬火来达到需要的性能A protective atmosphere cool, reheat and quench process is permitted.也可以在保护气忿中冷却、或重新加热和淬火 The final process step is a low temperature reheating to temper the part and achieve the specified surface hardness.最后的工艺步骤就是在低温下重新加热零件进行回火，以获得需要的性能。
3.1.2 Specification of lective carburizing on the Engineering drawing requires that designated areas be protected from carbon enrichment.对于 工程图上局部渗碳的部位，有些区域指定要与碳势环境隔离起来（不要求进行渗碳），may be accomplished by plating with copper to a minimum thickness of 0.025 mm (.001 in.), coating with a copper or ceramic bad paint, or using a physical barrier, such as a sleeve, plug or cap. 这样的区域可以镀上最小0.025mm厚度的铜镀层来保护，也可以用铜或者陶瓷涂料的涂层，或用套筒、插头等物理屏障层来进行保护 The protected areas must not show significant enrichment upon metallographic examination.这些被保护区域必定不是富碳的重要区域，所以金相检验不必做重点检测。
3.1.3 In order to prevent unintended blockage of ca enrichment in critical areas, such as gear teeth, no coating or paint shall be prent on any operating surface during heat treatment.为了防止在某些关键部位例如齿轮牙（无意中）发生碳富集，整个热处理过程都需要对工作表面进行涂镀。
3.1.4 Process details are established by Manufacturing to satisfy the requirements of this specification and the Engineering drawing. 为了满足标准的规定或工程图纸设计的要求，工厂需要进行工艺细节的设计The intent of processing shall be to produce parts uniform in ca properties on all surfaces, except tho designated with special requirements.制定工艺细节的目的就是为了在所有待处理的零件表面获得均匀一致的渗碳层，除了设计时指定部位有特定要求的。
3.2 STANDARD CASE DEPTH RANGES桃胡手串标准渗碳层深范围
3.2.1 One or more of the following standard effective ca depth ranges will be specified on the Engineering part drawing in the following format.
在工程零件图纸上一个或多个有效的渗碳层深范围应该如下表所示：
霸王鲨Carburize per SHAES174 Class CZ1按SHAES17每CZ1级的渗碳层
CARBURIZING 渗碳 登CLASS | EFFECTIVE CASE DEPTH有效渗碳层深 |
等级 | Inch | Millimeter |
更名申请CZ1 | 0.023 - 0.040 | 0.59 1.01 | 机器人画画图片
CZ2 | 0.033 - 0.053 | 0.84 1.34 |
CZ3 | 0.045 - 0.065 | 1.15 - 1.65 |
CZ4 | 残春旅舍>象棋玩法 0.045 - 0.090 | 1.15 2.28 |
CZ5 | 0.055 - 0.090 | 1.40 - 2.28 |
CZ6 | 0.070 - 0.090 | 1.78 - 2.28 |
| | |
3.2.2 The intent of Product Engineering is to have the heat treatment process produce ca depths centered within the specified range of each class and show capability of holding the defined limits at designated control locations. 产品工程图设计的目的是在每个渗碳等级区间，按照设计受控的渗碳区域中间，采用该热处理工艺方法，来获得有效的渗碳层深度
3.2.3 Class CZ4 and CZ5 are exceptions.。They apply only to lected Axle components where centering within the range is not required. 对于轴类零件，CZ4 、CZ5是个例外，渗碳区域的轴心部位可以不作上面的要求
