Induction Hardening

JJ Castings has the largest sub-contract Induction Hardening facility facility in Great Britain

Induction Hardening is a surface hardening technique with a proven record throughout industry. Its excellent controllability makes it a superior alternative to older surface hardening techniques.

Induction hardeningInduction Hardening is effected by passing a high frequency current through a suitably shaped inductor in close proximity to the surface to be hardened.

The rapid current reversal induces eddy currents in the surface causing it to heat above the hardening (austenitizing) temperature.

The inductor is passed slowly over the surface followed by a spray quench to achieve the rapid heating and cooling which results in hardening. The process is extremely versatile and can be used on an infinite variety of shape and size components.

J. J. Castings is well known for its ability to induction harden very large and difficult components as well as smaller and repetitive items.

The company designs and manufacturers its own purpose built inductors and has perfected several types to achieve hardness patterns of superior standard e.g. Inductors for tooth-by-tooth Induction Hardening of gears from 6 DP to 1 DP.

The Company has a wealth of metallurgical expertise and substantial metallurgical ‘back-up’ facilities.

All components are processed within our approved ISO 9001:2008 quality control system ensuring quality workmanship and long term traceability.Induction Hardening

Induction Hardening Benefits

  • Improves wear resistance
  • Improves strength
  • Improves resistance to fatigue

Cost Effectiveness

  • Prolongs component life.
  • Saves on plant down time.
  • Facilitates the use of smaller sections for a given load.

Suitable Materials

  • Most carbon containing steels
  • Cast iron
  • Martenistic stainless steels

Hardness Profile

  • Up to 65 R.C. surface hardness
  • Case depth from 0.5mm – 20mm

Range of Components

  • Gears of all shapes and sizes
    • 25mm – 4m diameter.
    • Rolls or tubes up to 7m long.
    • Cast iron slideways for machine tool industry.
    • Components from 6mm diameter to 1000mm diameter

Micro Processor Quality Control

  • Ensures accuracy and reproducibility
  • Approved to ISO9001:2008