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Nine things to pay attention to when sharpening the mould

There are many methods for mould sharpening, but the method used in mould sharpening is unreasonable, which will aggravate the rapid destruction of the mould edge, resulting in a sharp reduction in the number of blows per sharpening.Of course, correct mould sharpening will ensure the quality of the mould. And the stability of precision can also prolong the use of die cutting edge.


1. The radius of the cutting edge depends on the sharpness of the cutting edge in the case of R0.1-0.25mm.

2. The surface of the grinding wheel should be cleaned.

3. Jingzheng Company recommends the use of a loose, coarse-grained, soft grinding wheel. Such as WA46KV

4. The amount of grinding each time (the amount of knife eating) should not exceed 0.013 mm. Excessive grinding will cause the surface of the mould to overheat, which is equivalent to annealing treatment. The mould becomes soft and greatly reduces the life of the mould.

5. When sharpening, sufficient coolant must be added.

6. When grinding, the punch and the lower die should be fixed and stable, and special tooling fixtures should be used.

7. The amount of sharpening of the die is fixed. If this value is reached, the punch will be scrapped. If you continue to use it, it is easy to cause damage to the mould and the machine, which is not worth the loss.

8. After sharpening, the edges should be treated with whetstone to remove excessively sharp edges.

9. After sharpening, it must be cleaned, demagnetized and oiled.


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