Hardness test of the hottest cemented carbide

2022-09-22
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Hardness testing of cemented carbide

Rockwell hardness tester is mainly used for hardness testing of cemented carbide to test HRA hardness value. Phr Series Portable Rockwell hardness tester is very suitable for testing the hardness of cemented carbide. The weight of the instrument is only 0.7kg, and the accuracy is the same as that of the bench Rockwell hardness tester. It is very convenient to use and carry

cemented carbide is a kind of metal. The hardness test can reflect the differences of mechanical properties of cemented carbide materials under different chemical composition, microstructure and heat treatment process conditions. Therefore, hardness test is widely used to test the properties of cemented carbide, supervise the correctness of heat treatment process and study new materials

hardness testing characteristics of cemented carbide at present, these new products are still 10 points short in China. The characteristics of gold hardness test are: it is a non-destructive test, and the test method is relatively simple. The hardness test of cemented carbide has strong adaptability to the shape and size of its specimen and high test efficiency. In addition, there is a certain corresponding relationship between the hardness of cemented carbide materials and other physical properties

for example, the hardness test and tensile test of cemented carbide are basically to detect the ability of metals to resist plastic deformation. These two tests are to some extent to detect the similar characteristics of metals. Therefore, the test results can be compared with each other. Cemented carbide tensile test equipment is huge, complex operation, sample preparation, and low test efficiency. 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 hardness tests are used, and less tensile tests are used

hardness testing tool for cemented carbide

hardness of cemented carbide is generally tested by 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. The weight of this instrument is only 0.7kg, and the accuracy is the same as that of the bench Rockwell hardness tester. When measuring the hardness of cemented carbide, the PHR Series Portable Rockwell hardness tester produced by Tianxing company can test cemented carbide workpieces with thickness or diameter less than 50mm, cemented carbide workpieces with diameter as small as 2.0mm, and tubular cemented carbide workpieces with inner diameter less than 30mm. It can also be used at the production site, sales site or material warehouse, and the bonding strength of go-pda in simulation still exceeds that of go. This instrument is used to test cemented carbide workpieces, which is simple, fast and nondestructive. It can do hardness testing experiments one by one on batches of finished or semi-finished cemented carbide workpieces. The control software can store energy and display the experimental parameters in real time

Application of cemented carbides with different hardness

cemented carbides have high hardness and wear resistance, and are often used to manufacture metal cutting tools, measuring tools, die tensile strength, etc. Generally, when the hardness of the material is high, the wear resistance is also high; When the bending strength is high, the impact toughness is also high. However, the higher the hardness of the material, the lower its bending strength and impact toughness. High speed steel is still the most widely used tool material because of its high bending strength, impact toughness and good machinability, followed by cemented carbide

one kind of cemented carbide is made of one or several carbides (such as tic, WC, etc.) as hardening phase and alloy steel (such as high-speed steel, molybdenum chromium steel, etc.) powder as binder, which is called steel bonded cemented carbide. Its hardness is between steel and cemented carbide, but its toughness is greatly improved and it can be machined and heat treated. The typical hardness of this steel structure cemented carbide is: after quenching and tempering, the hardness is 69~73hrc, and the hardness of high-speed steel bonded cemented carbide is 65hrc

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