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For truing of grinding wheels, the required tool material is
1. Aluminum
2. Copper
3. Diamond
4. Steel

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Correct Answer - Option 3 : Diamond

Explanation:

Truing:

  • Truing is the operation of changing the shape of the grinding wheel as it becomes worn from an original shape, owing to the breaking away of the abrasive and bond.
  • Truing is done to make the periphery of the wheel concentric with its axis and to make its side true and this way to recover the lost shape of its face. Truing is in fact done on glazed wheels.
  • Wheel truing is defined as the act of restoring the cutting face of a grinding wheel by removing the abrasive material from the cutting face and sides of the wheel so that it will run true with respect to the axis of rotation and produce perfect round or flat work.
  • The wheel truing procedure involves the use of a diamond – pointed tool that is fed slowly and precisely across the wheel as it rotates.

Dressing:

  • Dressing of the wheel is done to recover proper cutting action of the wheel face by removing the layer of dulled grains or grains clogged with foreign material. Dressing removes the loading of the wheel.
  • Wheel dressing is defined as the act of improving the cutting action. It can also be described as a sharpening operation. 

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