DTEC DH300 Portable Leeb Hardness Tester

DH300 Colorful Screen Hardness Tester is a high cost performance model with colorful high-definition, 320×240 TFT dot matrix and mass storage; 

It is applicable to big workpieces on-site hardness testing and batch testing on the workpieces in production lines. Moreover, it is also used in metal manufacturing industry, transportation, power station, petrochemical industry, aircraft industry, construction, lab, etc

Working Principle:

When the impact body,with a certain weight,impacts against the specimen surface under the action of spring force,leeb hardness comes from the ratio of the impacting velocity(VA) and the rebounding velocity(VB) of the impact body by the moment the spherical testing tip is located at 1mm point from specimen surface.

With principle of electromagnetism,the permanent magnet in the coil of impact device produced an induced voltage, which is in proportion to the impact body velocity.

The leeb hardness values are calculated by the following formula:

Main Application:

Die cavity of molds

Bearings and other parts

Failure analysis of pressure vessel, steam generator and other equipment

Heavy work piece

The installed machinery and permanently assembled parts

Testing surface of a small hollow space

Material identification in the warehouse of metallic materials

Rapid testing in large range and multi-measuring areas for large-scale work piece