Brinell Digital Hardness Tester with Hardness Conversion 20X Measuring Microscope Touch Screen Bluetooth

● Vicky SHB-3000D differs from like products is the close loop loading system, key panel and touch screen double input methods, blue tooth transferring technology and digital measurement indentation technology;

● High accuracy close loop loading sensor replace traditional weights loading method, to realize automatic loading, dewell and unloading, makes easier installation and better measurement accuracy;

● Equips with 5.2” color touch screen with innovative interface design, makes force selection, dwell time setting, scale conversion and data reading, transferring, printing more convenient and fast; 

● One touch operation of indentationmeasurement by high resolution objective, largely eliminate human error and avoid annoyance to check indentation comparison table; 

● Auto hardness conversion from Brinell scale HBW to HK, HV, HRA, HRB, HRC, superficial rockwell scales, etc; 

● Equips with Bluetooth Device, optional Bluetooth printer and computer acceptor is available to realize wireless printing and data transferring.

2, Application Ranges:

●hard alloy;  

    
●Surface hardened steel; 

●Can be used to test hardness of almost any metallic materials, the part size is only limited by instrument capacity, main materials like hard alloy, surface hardened steel, cooper alloy, soft steel, quenched steel, aluminium alloy, etc.

The Brinell hardness test method consists of indenting the test material with a 10 mm diameter 
hardened carbide ball subjected to a load of 3000 kg. For softer materials the load can be reduced 
to 1500 kg or 500 kg to avoid excessive indentation. 

The full load is normally applied for 10 to 15 seconds in the case of iron and steel and for at least 
30 seconds in the case of other metals. The diameter of the indentation left in the test material 
is measured with a low powered microscope. The Brinell harness number is calculated by dividing 
the load applied by the surface area of the indentation.

The diameter of the impression is the average of two readings at right angles and the use of a Brinell 
hardness number table can simplify the determination of the Brinell hardness. A well structured Brinell 
hardness number reveals the test conditions, and looks like this, "75 HB 10/500/30" which means that 
a Brinell Hardness of 75 was obtained using a 10mm diameter hardened steel with a 500 kilogram 
load applied for a period of 30 seconds. 

On tests of extremely hard metals a tungsten carbide ball is substituted for the steel ball. Compared to 
the other hardness test methods, the Brinell ball makes the deepest and widest indentation, so the test 
averages the hardness over a wider amount of material, which will more accurately account for multiple 
grain structures and any irregularities in the uniformity of the material. This method is the best for 
achieving the bulk or macro-hardness of a material, particularly those materials with heterogeneous structures. 

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