Induction Hardening is a process used to only harden the thread forming zone of a tri-lobular fastener that forms a thread in a mating hole as it is put together.
This specialised process allows for precise and localised heating of specific, targeted areas, therefore minimising the risk of distortion in other regions of the object subjected to the practice. It’s very energy efficient compared to some other heating methods, as heat is generated directly at the part being treated, minimising heat loss.
Specialist machinery for induction hardening of fastener threads and selected zones leaving the core of the heat-treated fastener unaffected is available at Wolverhampton Electro Plating. This gives thread forming screws the ability to retain core toughness, but with hard threads to meet the most punishing applications of thread forming screws. Another benefit to extra wear resistance through induction hardening is an extended overall service life.
The specialised zone heat treatment is not exclusive to threads it also provides wear resistant areas particularly with items such as ball studs.
Our range of metal finishes and pre-applied lubricants can be applied to hardened screws to provide in-place corrosion resistance and controlled installation and prevailing torques.
If you'd like to enquire about any of our services or if you just have a question, please let us know
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