Drawing Brinell Hardness Testing Machine

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.

Drawing brinell hardness testing machine.

Limitations of hardness testing for deep drawing applications july 29 2020. Relatively high loads are applied to parts via a tungsten carbide ball in this method. Test forces range from 500 to 3000 kgf. Impact testing machines izod and charpy impact testing machines.

Built into the vickers microhardness test machine is a microscope that. 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. Parts location diagrams 8 7. A brinell hardness result measures the permanent width of indentation produced by a carbide indenter applied to a test specimen at a given load for a given length of time.

A 10mm ball with an applied load of 3 000 kgf is most common for brinell testing. 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. Tester footprint drawing for bolting the tester to the work table.

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. The brinell hardness test hbw indentation leaves a relatively large impression using a tungsten carbide ball. Unlike with rockwell testing brinell tests measure the diameter of the indentation made by the ball not the depth. 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.

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. Vickers cum brinell hardness tester. 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 size of the indent is read optically. Universal load cell based hardness testers.