Качество БНШ твердости тестирования машины прямо продажа для небольших районов

◆ Micro-Vickers hardness tester with colour touch screen;

◆ 8 inches colour touch screen , high resolution , easy to operate;

◆ Strong and stable body;

◆ LED illumination , light , adjustable , long life and no heat;

◆ Data storage for review and printing;

◆ Rotatable turret with five working positions;

◆ 250 lines encode with more precise measurement;

◆ Conversion between different scales;

◆ Two indenters available (Vickers and Knoop);

◆ Can be developed to semi-automatically or full-automatically system.

Vickers method is based on an optical measurement system, it specifies a range of light loads using a diamond indenter to make an indentation which is measured and converted to a hardness value. It is very useful for testing on a wide type of materials, but test samples must be polished to enable measuring the size of the impressions. A square base pyramid shaped diamond is used for testing in the Vickers scale. Typically loads are very light, ranging from 10gm to 1kgf, although "Macro" Vickers loads can range up to 50 kg or more.

Micro Vickers and Knoop hardness methods are used to test on metals, ceramics, and composites - almost any type of material. Since the test indentation is very small in a Vickers test, it is useful for a variety of applications: testing very thin materials like foils or measuring the surface of a part, small parts or small areas, measuring individual microstructures, or measuring the depth of case hardening by sectioning a part and making a series of indentations to describe a profile of the change in hardness.