How to distinguish the quality of the cut off wheel from the appearance?

1. First, check whether the cutter head on the cutting disc is in the same straight line

If the cutting head is not in the same straight line, it indicates that the size of the cutting head is not regular and may be wide or narrow, which will lead to unstable cutting when cutting stone and affect the quality of the saw blade.

2. Observe whether the weld is close to the matrix

Before the welding seam and the matrix, there will be a welding seam after the brazing. If the arc-shaped surface at the bottom of the tool head is completely fused with the matrix, there will be no gap. Such a gap indicates that the tool head on the cutting disc is not completely fused with the matrix, mainly because the arc-shaped surface at the bottom of the tool head is not evenly polished.

3. Measure the weight of the cutting disc

The heavier the cutting disc, the thicker the better, because the heavier the saw blade, the greater the inertia force when cutting, cutting more stable. Generally speaking, 350mm cutting disc should be about 2kg, 400mm cutting disc about 3kg.

4. Check the hardness of the matrix

The higher the hardness of the matrix, the less likely it is to deform. Therefore, whether the matrix hardness reaches the standard during welding or cutting directly affects the quality of the saw blade. No deformation at high temperature welding or under the condition of force majeure is a good matrix, and it is even a good saw cutting disc after being processed.