How to avoid burning workpieces

Grinding of workpieces, especially for workpieces with high precision requirements, burn problems are common in the grinding process. There are many causes of burns during grinding. To avoid scrapping the workpiece due to burns on the surface of the workpiece, the following measures are taken to avoid burns.

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First, reduce the generation of grinding heat

1. Control of feed rate:

To reduce the feed rate, it is common to use a larger feed at the beginning and a smaller feed at the last few knives, with less grinding depth.

2, the choice of grinding wheel

Use a grinding wheel with small particle size, soft hardness and loose structure. Large-diameter grinding wheels are often used to keep the grinding wheel under sharp conditions, and a suitable lubricating fluid with good lubricity is selected to reduce the friction between the abrasive particles and the workpiece.

3, reduce the contact surface

Reduce the contact surface between the grinding wheel and the workpiece, resulting in less heat.

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Second, accelerate the transmission of grinding heat

How to make grinding heat transfer

In addition to solving the burn problem from the inside, it is necessary to take certain measures from the outside. Therefore, increasing the speed of the workpiece can accelerate the heat transfer to the outside, the most effective way is to cool. Internal cooling, high pressure cooling, spray cooling, etc. can be used, and the coolant must be kept clean.