How do you anneal a chisel?
How to anneal a chisel |
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After you have hardened the cold chisel, it is very brittle. This means that it may break when it is used. | |||
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By allowing the steel molecules to cool down more slowly, and thus not come together as quickly, annealing removes some of the brittleness. | |||
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Annealing is essential on steels of lower carbon content. | |||
Annealing |
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Step 1 – Reheating steelReheat the steel to a bright red colour. |
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Step 2 – Slowly cooling steelAllow the steel to cool slowly in sand or in the open air. |
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Your cold chisel is now ready for tempering. The cutting edge will need to be harder than the annealed body.
Because annealing softens steel, the process may also be performed before hardening in order to shape the metal into a cold chisel. |
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