Drawing Brinell Hardness Testing Machine

Test forces range from 500 to 3000 kgf.

Drawing brinell hardness testing machine. Universal load cell based hardness testers. A chart is then used to convert the averaged diameter measurement to a brinell hardness number. The brinell hardness test is used for hardness testing larger samples in materials with a coarse or inhomogeneous grain structure. Relatively high loads are applied to parts via a tungsten carbide ball in this method.

Parts location diagrams 8 7. The brinell hardness test. In this machine the indentor swivels and projects diameter of ball. Test setup and operation 6 5 1 setting up indenter and anvil 6 5 2 selection of test load 6 5 3 load a test specimen 7 5 4 selecting time at load 7 5 5 initiating a test 7 5 6 test completion 7 5 7 brinell scope measurement 7 6.

The brinell hardness test hbw indentation leaves a relatively large impression using a tungsten carbide ball. A 10mm ball with an applied load of 3 000 kgf is most common for brinell testing. A third option is the vickers hardness test and as with brinell testing calculating the vickers hardness number requires dividing the applied load by the surface area of the indentation. Limitations of hardness testing for deep drawing applications july 29 2020.

The brinell hardness test ing uses indenters made of st eel to test materials with hardness values of up to 350 hb or of hard metal tungsten to test materials with har dness values from 350 to. The load is usually applied for 10 to 15 seconds in the case of testing steel or steel materials and for other softer materials the load must be applied at least 30 seconds. It 30 it 30 d it 30 astm auto impact 30 auto impact 40 astm. Tester footprint drawing for bolting the tester to the work table.

Vickers cum brinell hardness tester. Basic machine design and operation is similar to tkb 3000 with built in an optical device with 14x magnification provided in front to project diameter of ball impression on a glass screen with a micrometer measuring system with 0 01 mm least count. Built into the vickers microhardness test machine is a microscope that. The size of the indent is read optically.

Unlike with rockwell testing brinell tests measure the diameter of the indentation made by the ball not the depth. The brinell hardness meter uses an impulse force of 9 807n to 29420n depending on the test material and the diameter of the impeller ball.