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BAR HARDENING and TEMPERING

HARDENING

Hardening is a process of heating followed by cooling generally fast for increase hardness . To this end, the steel is heated to a temperature slightly higher than the upper critical (850-900ºC) and then cooled quickly in a medium such as, water, water mixed with soluble polymers, etc. The steels that are normally used in induction hardening contain from 0.3% to 0.7% carbon.

Induction Heating Advantages :

• It treats a specific part of the piece
• Frequency Control and heating times
• No physical contact

• Control and located heat
• Cooling control
• Can be integrated in production lines

Induction Hardening can be done in Two Different Ways :

•  Static: •  Progressive (by scanning):

TEMPERING

Tempering is a process able to decrease the hardness, strength and increases the toughness of hardened steels, while removes the tensions created in the temple, leaving the steel with the required hardness. The traditional tempering system consists of heating the parts at relatively low temperaturese and then let them cool slowly.

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