How To Harden Steel?

Steel Is An Alloy Of Iron Used In

Construction, The Manufacture Of Metal

Tools And Other Applications.

Start With Tool Steel Having

Sufficient Carbon Content.

Heat The Steel

Heat the entire piece of steel slowly at first. Then, concentrate

the heat on the area that is to be hardened, such as a chisel

point or screwdriver blade tip, until that area glows red hot.

Quench The Steel In A Fluid

Dipping the hot steel into a liquid or gas rapidly cools it,

hardening the metal. Several fluids can be used as a quench.

Clean The Steel

Heat The Steel Again

Let The Steel Cool

This time, unlike the rapid cooling during quenching,

the steel can be cooled either quickly or slowly,

depending on the desired properties of finished steel.

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