Applying Heat Treating Processes

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In order to measure and work metal satisfactorily, the stock must be securely and properly held.

Measuring stock


Measuring stock is very important.

In construction work it is best to secure a plan or a blueprint, if possible, which will indicate exact dimensions.

If a bent piece of metal is to be duplicated, take a lightweight piece of wire and follow the bends with the wire.
Then remove the wire, straighten it, and measure its total length.
The wire should be placed near the center of the piece being measured

Heating Metal

Do not use excessive air or oxygen in heating.
This will cause the metal to scale, and increase the time required for heating.
Working any metal heated to less than a cherry red may cause it to crack.


Malleable cast iron cannot be heated above 1,375°F, because it will revert to some of the characteristics of white cast iron when cooled.



Hot Metal Cutting


When cutting a light piece of material, often it is not necessary to use the cutter.
Merely place the stock over the hardy and deliver hammer blows directly to the stock.