Step 5:

Heat treatment

The machining of the rough shape is done with the steel in soft condition. But when a die is soft it cannot be used for production. Therefore the dies are hardened before they move to the next step in production.

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To make sure that the tools have the right hardness they are hardened. This is done by a thermohardening process. A process that is closely monitored. As soon as the dies are hardened they are checked to make sure  that they have reached the specifications that they should have.

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Continue to step 6

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