The following equipment is used in the field of metallography:
The rubber wheel can be used to evaluate the abrasive wear resistance of a specimen in accordance with ASTM G65. In the test the abrasive material (e.g. sand) passes over the wear specimen, which is simultaneously pressed against the rotating friction wheel. To evaluate the wear resistance, the volume loss after abrasive wear is determined. For this purpose, the ratio is calculated from the mass difference of the specimen before and after the test and from the density of the specimen.
Technical specification
Application
The tribocorrosion test rig enables the investigation of sliding wear with simultaneous corrosion phenomena. The material to be tested can thus be fully characterized in terms of its tribocorrosion behavior. Measurements in accordance with ASTM G119 are possible. A two-dimensional load cell is used to record both the normal force and the frictional force, so that the coefficient of friction can be calculated automatically. In addition sliding wear tests can be carried out in dry running.
Technical specification
Application
The hot wear test rig works on the principle of a wear pot in which the specimens are moved through a free-moving abrasive. The main components of the test rig are a circulating air oven and a special agitator which is guided through the oven ceiling. Up to four specimens can be attached simultaneously to a specimen holder, which is moved by the agitator through a pot filled with abrasive. The entire system can be heated up to 600°C by the surrounding furnace. The abrasive material removal is determined by weighing the sample before and after the test on a precision balance.
Technical specification
Application
Testing rig for sliding wear, sliding wear at elevated temperatures and hot hardness up to 600 °C.
Technical specification
Application