Brinell hardness tester (automatic)

Brinell hardness tester(Automatic)HBZ-3000AThe model adopts a grating measurement system and an automatic digital display device, which is suitable for on-site online inspection of large quantities of parts; The random printer automatically prints hardness test results, which are applied to determine black metals, non-ferrous metals, and bearings.

1、 Brinell hardness tester (automatic)HBZ-3000AType technical parameters

1Measurement range:32-450HBS

2Test force:7.355、9.807、29.42Thousand newtons（750、1000、3000Kilogram force)

3Maximum allowable height of test piece:450millimeter

4Distance from the center of the pressure head to the machine wall:170millimeter

5Power supply: AC380ambush

6Dimensions: Host920 x 720 x 1760millimeter The digital display is:510 x 500 x 1450millimeter

7Weight: Approximately for the host900Kilogram; Digital display instrument approximately40kilogram

2、 Brinell hardness tester (automatic)HBZ-3000AType standard accessories

1Flat test bench

2Steel ball indenter: ф5F10millimeter

3TheVType test bench

4Standard Brinell hardness block

5、20Double reading microscope

3、 Basic knowledge of Brinell hardness tester

Uniformity of Brinell hardness block（uniformity of Brielle hardness blocks）Five evenly distributed indentations should be made on the entire test surface of each standard block. setd1Thed2Thed3Thed4Thed5Arrange the average indentation diameter for each measurement in ascending order of size. The uniformity of the standard block under the specified calibration conditions isd5－d1, in order todExpressed as a percentage, wheredCalculate according to the following formula:d = (d1 + d2 + d3 + d4 + d5)/5.

Note: According to regulations in our country, under unchanged verification conditions, the Brinell hardness working standard is uniformly distributed at different positions on the working surface of the standard block, and five points are measured; The maximum difference between the five hardness values measured is divided by the arithmetic mean of the five hardness values and expressed as a percentage.