Model NO.: MHBD-3000P
Measuring Range: HB
Standard: ISO, ASTM
Auto Hardness Conversion: Hr, Hv, HK, etc
Execution Standard: ISO 6506, ASTM E10-12, JIS Z2243, GB/T 231
Max Height of Specimen: 220mm
Power Supply: 220V/50Hz; 110V/60Hz
Packing Dimension: 625 X430 X950mm
HS Code: 9024102000
Type: Brinell Hardness Tester
Hardness Display: Check Table of Brinell Hardness
Output Data: RS 232/Printer
Testing Force: 62.5kgf, 100kgf, 125kgf, 187.5kgf,750kgf, 3000kgf
Instrument Throat: 120mm
Packing Weight: 149kg/135kg
Origin: Shanghai, China
MHBD-3000P adopts the load cell to replace the traditional weights, this innovative design makes the instrument more accurate.
MHBD-3000P selection of testing force and dwell time is controlled and monitored on the front panel, it is automatic during the process of loading, dwell and unloading.
MHBD-3000P uses 20x digital brinell measuring eyepiece to measure the diameter of indentation, just one click on eyepiece to get diameter of indentation, easy to operate.
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 macrohardness of a material, particularly those materials with heterogeneous structures.
|Product Name||Digital Brinell Hardness Tester|
|Testing Force||62.5Kgf, 100Kgf, 125Kgf, 187.5Kgf, 250Kgf, 500Kgf, 750Kgf, 1000Kgf, 1500Kgf, 3000Kgf|
|612.9N, 980N, 1226N, 1839N, 2452N, 4900N, 7355N, 9800N, 14700N, 29400N|
|Testing Range||(8~650) HBW|
|Hardness Display||LCD screen|
|Magnification of Microscope||20x digital eyepiece|
|Max. Height Of Specimen||220mm|
|Execution Standard||ISO 6506,ASTM E10 – 12,JIS Z2243,GB/T 231|
|Accuracy of Brinell Hardness Testing|
|HBW≤ 125||≤ 3.5%|
|HBW> 225||≤ 2.5%|
|Standard Delivery||Standard Delivery||Standard Delivery|
|Instrument Main Body||?5mm Ball Indenter||Power Cable|
|20x digital eyepiece||?2.5mm Ball Indenter||Accessories Box|
|Hardness Block HBW/3000/10||? 200mm Flat Anvil||Anti-dust Cover|
|Hardness Block HBW/750/05||? 60mm Flat Anvil||Level Screw|
|?10mm Ball Indenter||? 55mm V-shape Anvil||Instrument Manual|