Overview
The HR150D Rockwell hardness tester is a rugged and reliable hardness testing instrument produced by IPRE. It is suitable for rockwell hardness measurement of various materials, with high test efficiency, and is equipped with a large screen digital display and Built-in Printer.
Features
1. Strong construction, good rigidity, accuracy, reliability, durability, and high testing efficiency.
2. Using frictionless spindle, high test accuracy.
3. The accuracy conforms to GB/T230.2, ISO6508-2 and American ASTM E18 standards.
4. Large-screen LCD digital display, supports Chinese and English language conversion.
5. Built-in Printer, which can directly output data.
6. Support a variety of Rockwell scales (HRA, HRB, HRC, etc.) and conversion scales (surface Rockwell, Brinell, Vickers).
7. The hardness resolution reaches 0.1HR.
Principle
The hardness gauge presses the indenter into the surface of the specimen by applying the specified initial test force and the main test force. After removing the main test force, the residual increment of the depth of Che is measured and calculated according to the rockwell hardness definition formula, and finally the hardness value is displayed directly on the screen.
Applications
Quenching, quenching and tempering rockwell hardness measurement of ferrous metals, non-ferrous metals, Non-metallic materials
Standards
GB/T 230.2, ISO6508-2, American ASTM E18
Steps
1. Select the appropriate Rockwell scale and indenter according to the test material.
2. Place the sample smoothly on the test bench to ensure that the test surface is clean.
3. Adjust the height of the specimen so that the maximum height does not exceed 175mm, and pay attention to the distance between the indenter and the outer wall (160mm).
4. Apply the initial test force (10kgf/98.07N).
Apply the main test force (60kgf/588N, 100kgf/980N or 150kgf/1471N).
6. Remove the main test force and maintain the initial test force.
7. Read the hardness value directly from the large screen LCD, or use the Built-in Printer to output the data.
Notice
• Make sure the instrument is placed horizontally and firmly before use.
• Choose the correct scale and test force according to the material to be tested to ensure that the hardness value is within the test range of the instrument (e.g. HRC: 20-70).
• The surface of the sample should be flat and clean, Film thickness is sufficient, and the back should not be deformed.
• During testing, the pressure head should be kept at least 160mm away from the outer wall, and the maximum height of the specimen should not exceed 175mm.
• Regularly calibrate the instrument with standard hardness blocks to ensure test accuracy.
• Impact or vibration should be avoided during operation to avoid affecting test results and instrument life.
• When the instrument is not used for a long time, the test force should be removed, and the indenter and work surface should be treated with anti-rust treatment.
