GB/T 35160.4-2017Test methods for agglomerated stone—Part 4: Determination of abrasion resistance (English PDF)

5.1 wear test equipment

The wear-resistant equipment is shown in Figure 1. A rotating grinding wheel, a hopper with 1 or 2 control valves, adjusts the abrasive flow rate

A flow control bucket, a jib truck, a counterbalance and a revolution measuring device.

When using two control valves, one is used to control the constant flow rate of the abrasive and the other is used to control the switch.

Steel grinding wheel hardness of 203HBW ~ 245HBW, a diameter of.200mm ± 1mm, the edge thickness of 10mm ± 1mm, spin

Rotation speed of 75r/(60 ± 3) s.

A movable gripper pushes the specimen against the wheel with a constant mass balance.

The hopper supplies abrasive to the flow control hopper, and the flow control hopper (cylindrical or square) has a slit exit. The length of the seam is 10 mm

± 1mm, width 4mm ± 1mm and adjustable, the length of the seam should not be less than the thickness of the edge of the grinding wheel. Cylindrical flow control bucket slit in each

The distance from the inner wall of the flow control hopper in each direction should not be less than 10mm. When using the square flow control hopper, at least one wall is inclined to the slit.

The height of the slit from the grinding wheel shaft is 100mm ± 5mm, and the abrasive falls 1mm ~ 5mm toward the edge of the grinding wheel.

Abrasive flow through the slit to the grinding wheel flow (125g ± 10g)/100r, abrasive flow should be stable, the flow control of the abrasive inside the bucket

The minimum height is 25mm.