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JINXIN TRANSMISSION EQUIPMENT CO. ,LTD

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Inspection specification for heat treatment pieces

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[Abstract]:
Objective: in order to standardize the inspection and acceptance of heat treatment parts, the inspector can accurately judge whether the parts are qualified
Objective: in order to standardize the inspection and acceptance of heat treatment parts, the inspector can accurately judge whether the parts are qualified
 
 
Scope of application: all heat treatment parts of the company
 
 
Work before inspection:
 
 
1. Check whether heat treatment report, drawings and self-inspection records are complete
 
 
2. Check whether the parts have temperature, and if so, wait for the parts to cool down before checking
 
 
3. Check whether the order number and drawing number on the parts are consistent with the drawing
 
 
Inspection of parts appearance:
 
 
1. Check the parts for bumps and bumps. If the bumps are serious, the order should be issued
 
 
2. Check whether the parts have cracks
 
 
3. Check whether the shot peening is uniform on the surface of the part, and whether there is oxide skin on the tooth surface, tooth root and end surface of the shot peening part

  

热处理件的检验规范

 

  Inspection of part hardness:

1. Equipment for testing hardness

热处理件的类型

使用的设备

渗碳件

TH110硬度计接D

调质件

TH160里氏硬度计接G

氮化件

TH110硬度计接C

2. Scope of hardness test allowed

普通件

备件

重点客户产品

渗碳件±3HRC

渗碳件±2HRC

渗碳件±1HRC

调质件±10HB

调质件±5HB

调质件±2HB

3. Hardness test method

             

渗碳件、表淬件

齿轮轴、齿轮类零件的检验是将齿顶抛平并光滑,一个齿检验三个部位(左、中、右)的硬度,光轴类零件根据工艺要求的检验部位对其检硬度

 

 

调质件

将零件抛平并抛深些,齿轮、长度在1米以内的轴类零件检一个点,长度大于1米以上的轴类至少要检两个点(端部、尾部),两点硬度值相差不能超过10HB;对于同一个制令号、图号的多个零件(10个以上的销)可以采取抽检的方式进行检验

 

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