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6- Heat Treating -Tool Steels

Tool steels are steels used to make tooling. Tooling can be a punch for a punch and die set (left), a knife blade roller for a shear press (right), or a mold cavity for a plastic injection mold (below). There are hundreds of applications for tool steels. The most common heat treatable tool steels are W type which is quenched in water, A type which is quenched in air, and O type which is quenched in oil.

The above animation by Sridharan P on Youtube demonstrates how tool steel punches and knives are used to pierce, form or cut softer materials however "soft" is relvant.

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