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Mirco Hardness Tester is a key piece of equipment that is indispensable to metallographic research, product quality control, and the development of product certification materials.
Vickers / Microhardness test procedure as per ASTM E-384, EN ISO 6507, and ASTM E-92 standard specifies making indentation with a range of loads using a diamond indenter which is then measured and converted to a hardness value. For this purpose as long as test samples are carefully and properly prepared, the Vickers / Microhardness method is considered to be very useful for testing on a wide type of materials, including metals, composites, ceramics, or applications such as testing foils, measuring surface of a part, testing individual microstructures, or measuring the depth of case hardening by sectioning a part and making a series of indentations.
Two types of indenters are generally used for the Vickers test family, a square base pyramid shaped diamond for testing in a Vickers hardness tester and a narrow rhombus shaped indenter for a Knoop hardness tester.
The Vickers hardness test method requires a pyramidal diamond with square base having an angle of 136° between the opposite faces. Upon completion of indentation, the two diagonals will be measured and the average value will be considered.
The loads for Micro Vickers or Knoop hardness testing methods are typically very low, ranging from a few grams to 2 kgs.
1, DHV-1000/1000Z Digital Micro Vickers Hardness Tester made with a unique and precise design in the field of mechanics ,optics and light source is able to produce a clearer indentation and hence a more precise measurement.
2, Adopts a 10* objectives, 40* objectives and 10* digital microscope enable the tester a wider measurement field and broader usage range.
3, Equipped with a digital microscope, display testing method, test force, indentation length, hardness value, dwell time of test force as well as the number of measuring times, all shown on LCD screen.
4, With a special thread interface, can link a video measuring device and indentation automatically measuring device without changing optical path.
5, The CCD pickup camera device and image handling system can be equipped on the tester as optional;
6, Knoop indenter is optional.
|Test Force||N||0.098, 0.246, 0.49, 0.98, 1.96, 2.94, 4.90, 9.80|
|gf||10, 25, 50, 100, 200, 300, 500, 1000|
|Lens/indenter switch||Manual||Automatic Motorized Turret|
|Force loading mode||Automatic loading, holding and unlaoding|
|Amplification of microscope||100*, 400*|
|Min. measuring resolution rate||0.0315μm|
|Dimension of XY table||100*100mm|
|Moving range of XY table||25*25mm|
|Max. height of test sample||70mm|
|Max.width of test sample||95mm|
|Output||With built-in printer|
|Light source||Halogen light|
|Power||AC 220V, 50/60HZ|
|Standard Accessories||Vickers indenter; Objectives (10*, 40*); 10* digital micro lens;|
XY-stage test table; thin specimen test table; Fork-shaped test table; Fine wire test table; Adjustable screw; lever, RS232 interface; Micro vickers hardness block; Manual etc.
Objectives (10*, 40*);
10* digital micro lens;
XY-stage test table;
thin specimen test table;
Fork-shaped test table;
Fine wire test table;
Micro vickers hardness block;
ASTM E384 “Standard Test Method for Microindentation Hardness of Materials”
ISO 6507 “Metallic materials -- Vickers hardness test”