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Hard Alloy Detection Method

Hangzhou JWG Technology Co.Ltd | Updated: Nov 03, 2017

Carbide is an alloy material made of powder metallurgy hard alloy and cemented metal powder metallurgy process.

Carbide has a high hardness, wear resistance, strength and toughness is good, heat, corrosion and a series of excellent performance, especially its high hardness and wear resistance, even at 500 ℃ temperature is basically the same , At 1000 ℃ still have a high hardness.

Carbide is widely used as cutting tool materials, such as turning tools, milling cutters, planing knives, drill bits, boring tools, for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut Heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult materials.

Carbide cutting tools than high-speed steel cutting speed 4 to 7 times higher tool life 5 to 80 times. Manufacturing molds, measuring tools, life-span alloy tool steel 20 to 150 times higher. Can be about 50HRC cutting hard materials.

However, carbide brittle, can not be cut, it is difficult to make a complex shape of the overall tool, which often made of different shapes of the blade, the use of welding, bonding, mechanical clamping and other methods installed in the body or mold body .

Detection method

Carbide hardness testing mainly Rockwell hardness tester, test HRA hardness value. PHR series portable Rockwell hardness tester is suitable for testing the hardness of cemented carbide. Instrument weight accuracy and desktop Rockwell hardness of the same, use and carry are very convenient.

Carbide is a kind of metal. The hardness test can reflect the difference of the mechanical properties of the cemented carbide material under different chemical composition, structure and heat treatment process conditions. Therefore, the hardness test is widely used in the testing of the cemented carbide performance, supervising the heat treatment The correctness of technology and new material research.

Features

It belongs to a non-destructive test, the test method is relatively simple. Carbide hardness testing of its shape and size of the specimen adaptability, high test efficiency. In addition, there is a certain correspondence between the hardness of the cemented carbide material and other physical properties. For example, the cemented carbide hardness test and the tensile test are basically the ability to detect the metal's resistance to plastic deformation, both of which are to a certain extent the similarities of metals. Therefore, the test results are completely comparable to each other. Carbide tensile test equipment is huge, complex operation, to prepare samples, test efficiency is low, for many metal materials, there is a hardness test and the conversion test of the tensile test can be found. Therefore, when testing the mechanical properties of cemented carbide materials, more and more people use the hardness test, and the less the use of tensile test.

tool

Carbide hardness is generally measured with a 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 suitable for testing the hardness of cemented carbide. This instrument weighs only 0.7kg, the same accuracy and desktop Rockwell hardness tester. In measuring the hardness of cemented carbide, the PHR series Portable Rockwell Hardness Tester produced by Star can test cemented carbide workpieces with thickness less than 50mm in diameter and can test cemented carbide workpieces with diameters as small as 2.0mm. 30mm tubular carbide workpiece. Can also be used at the production site, sales site or material warehouse. This instrument is used to test hard alloy workpiece is simple, fast, nondestructive, batch finished or semi-finished carbide workpiece piece by piece hardness testing.


Hangzhou JWG Technology Co.Ltd