Test method for the hardness of carbide milling cutter: Rockwell hardness tester should be used to test the hardness of cemented carbide milling cutter to test the HRA hardness value. PHR series portable Rockwell hardness testers are very suitable for testing the hardness of carbide milling cutters. The weight accuracy of the instrument is the same as that of the desktop Rockwell hardness tester, and it is very convenient to use and carry.
Cemented carbide is a kind of metal, and the hardness test can reflect the difference in the mechanical properties of cemented carbide materials under different chemical composition, microstructure and heat treatment conditions, so the hardness test is widely used in the inspection of cemented carbide properties and supervising heat treatment. The correctness of the process and the discussion of new materials.
It belongs to non-destructive experiment, and the experimental method is relatively simple. The hardness test of cemented carbide has strong adaptability to the shape and size of the test piece, and the experimental efficiency is high. In addition, there is a certain correspondence between the hardness of cemented carbide materials and other physical properties. For example, cemented carbide hardness tests and tensile tests are basically tests of the ability of metals to resist plastic deformation, and both tests are to some extent test similar properties of metals. Therefore, the test results are completely comparable to each other. The cemented carbide tensile test equipment is huge, the operation is complicated, the sample preparation is required, and the experimental efficiency is low. For many metal materials, there is a conversion table for hardness test and tensile test. Therefore, when testing the mechanical properties of cemented carbide materials, more and more people use the hardness test, and less use the tensile test.
The hardness of cemented carbide is generally tested with Rockwell hardness tester HRA scale or Vickers hardness tester. In practice, people mainly use Rockwell hardness tester to test HRA hardness. PHR series portable Rockwell hardness tester is very suitable for testing the hardness of cemented carbide. This instrument weighs only 0.7kg and has the same accuracy as a desktop Rockwell hardness tester. When measuring the hardness of cemented carbide, the PHR series portable Rockwell hardness tester produced by Tianxing can test cemented carbide workpieces with a thickness or diameter of less than 50mm, and can test cemented carbide workpieces with a diameter as small as 2.0mm. 30mm tubular carbide workpiece. It can also be used at the production site, sales site or material warehouse. This instrument is used to test cemented carbide workpieces simply, quickly and non-destructively.
