FEATURES:
- High accuracy, repeatability, and reliability
- Easy to use anywhere
- Suitable to test metal parts of any size and shape
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| EASY TO USE |
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Place the test piece between the adjust supporter and indenter |
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| Press a 10 Kg preliminary load |
Press the main load |
Unload 10Kg |
Display the readings |
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Suitable to test metal parts of any size and shape |
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Testing a spring |
Small
support platform for testing parts on milling machine |
Testing on a platform |
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Testing on a Lathe |
Testing on a milling machine |
Testing in a ring |
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Click on the images
for larger view |
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| Rockwell Hardness Testing and the ASTM E 18-03 Standard |
Rockwell Hardness testing is a system for determining hardness of metallic material. The E 18-03 standard established by ASTM is a detailed description of the Rockwell Hardness testing method.
A 120 degree angle diamond or 1/16” (1.588mm) diameter hard steel ball indenter is pressed into the test piece surface with a preliminary force P0 (10kgf) at a depth D0. Then, a main force P1 is added until the total test force, P = P0 + P1, is 60kgf for HRA, 100kgf for HRB and 150kgf for HRC, and the indenter increases to a depth D2. Then, the preliminary force P0 is unloaded, and the indenter decreases to a depth D1. This results in a depth difference, e = D1 – D0, measured in units of 0.002mm. The hardness reading for HRA and HRC is 100-e, and for HRB is 130-e
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