How I Restored a Rockwell Hardness Tester
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How I Restored a Rockwell Hardness Tester
In this video, a vintage 50-year-old Rockwell hardness tester, weighing over 80kg (176lbs), is restored. The machine employs mirrors, translucent scales, and old-style light bulbs to measure hardness down to 0.1 HRC.
3 weeks ago
Rockwell scale Hardness Testing
Testing the hardness of some 4140 square stock for Rockwell C scale. I’m using it to machine a custom tool for a customer. After machining I’ll use the Hot Shot 360 to heat treat it. #hardnesstester #4140 #abom79 | Abom79
1:40
Testing the hardness of some 4140 square stock for Rockwell C scale. I’m using it to machine a custom tool for a customer. After machining I’ll use the Hot Shot 360 to heat treat it. #hardnesstester #4140 #abom79 | Abom79
FacebookAbom79
3K viewsJan 31, 2020
The Rockwell scale is a hardness scale based on indentation hardness of a material. ... The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale (see below). When testing metals, indentation hardness correlates linearly with tensile strength. | QA QC Professionals
0:33
The Rockwell scale is a hardness scale based on indentation hardness of a material. ... The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale (see below). When testing metals, indentation hardness correlates linearly with tensile strength. | QA QC Professionals
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