Practical Manual-Turret Micro Hardness Tester Vickers (HV-1000DT)

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Basic Info

• Model NO.: HV-1000DT

• Measuring Range: HV

• Standard: ISO, ASTM, GB/T

• Testing Range: 1hv~4000hv

• Max. Height of Specimen: 85mm

• Magnification of Microscope: Observation:10X/40X; Measurement:40X

• Specification: CE,ISO

• HS Code: 9024102000

• Type: Vickers Hardness Tester

• Application: Metal, Plastic, Ceramics and Glass

• Loading Control: Automatic (Loading, Dwell, Unloading)

• Illumination: Adjustable LED Light-Source

• Instrument Throat: 115mm

• Testing Force: 0.01kgf-1kgf

• Trademark: SIOMM

• Origin: Shanghai, China

Product Description

Manual-Turret Micro Vickers Hardness Tester HV-1000DT

The micro hardness testing of materials allows for the determination of the hardness of small or thin specimens and small areas of larger specimens,

Micro hardness testing is commonly used to determine characteristics of thin sheets, foils, fine wire, epoxies, paints, etc. And is often employed in R&D applications.

Micro hardness is especially useful in determining hardness variations, caused by hardening, quenching, plating, fabrication, welding or annealing, bonding, etc. Micro hardness testing can be accurately employed using loads as slight as 1 gram, somewhat less and considerably more in certain situation.

The advantages of the Vickers hardness test are that extremely accurate readings can be taken, and just one type of indenter is used for all types of metals and surface treatments. Although thoroughly adaptable and very precise for testing the softest and hardest of materials, under varying loads, the Vickers machine is a floor standing unit that is more expensive than the Brinell or Rockwell machine.

Principle of Vickers Test

The Vickers hardness test method consists of indenting the test material with a diamond indenter, in the form of a right pyramid with a square base and an angle of 136 degrees between opposite faces subjected to a load of 1 to 100 kgf. The full load is normally applied for 10 to 15 seconds.

The two diagonals of the indentation left in the surface of the material after removal of the load are measured using a microscope and their average calculated. The area of the sloping surface of the indentation is calculated. The Vickers hardness is the quotient obtained by dividing the kgf load by the square mm area of indentation.

When the mean diagonal of the indentation has been determined the Vickers hardness may be calculated from the formula, but is more convenient to use conversion tables.
 
The Vickers hardness should be reported like 800 HV/10, which means a Vickers hardness of 800, was obtained using a 10kgf force. Several different loading settings give practically identical hardness numbers on uniform material, which is much better than the arbitrary changing of scale with the other hardness testing methods.