Type B: It is suitable for testing the surface hardness of fine and coarse sand molds (cores) of manual or mechanical low and medium pressure molding.
Operation:
Adjust the 0 position, when the pointer is not in the 0 position, turn the adjusting ring, so that the pointer to the 0 bit. - use the hardness is pressed on the tested sand plane (hardness of the axis perpendicular to the surface of the sand), the hardness meter gauge plane and the measured sand plane close contact, the pointer stopped at a certain value, press the locking pin locking be locking, read out the determined value, then loosen the lock locking the pointer back to zero. In each test, 5 to 3 times, and then to calculate the average number, both the hardness value of the site.
technical parameter:
Compression stroke: 2.5mm
Max load: 980g
Preloading load: 50g
Pressure header: R=12.7mm
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