Heat Staking With Induction Heating

plastic metal bonding with induction heating

Improve your staking process without flame!

Induction staking focuses energy in your part only.

You don't need a torch or a costly batch or furnace process.

Stake your materials in a repeatable, precise flameless process.


Click to read one of our many heat staking application notes (after a brief, free registration); learn more about:
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  • Overview
  • Induction

When a structural component is produced from a thermoplastic material, it is possible to heat a threaded metal insert to a temperature above the plastic reflow point and press it into the plastic part. There are many types of metal inserts, specially designed for retention strength, produced for this purpose. With the increasing need for lighter, stronger structural components, metal inserts are now frequently used when strong threaded connections are required. Metal to plastic bonding is one of several plastic reflow appli-cations for induction heating. Other processes involving heating plastic to a liquidous state include metal reclaiming and thermoplastic composite manufacturing.

The metal to plastic bonding process requires fast, accurate and repeatable heating to avoid such quality defects as flashing (molten plastic overflow) and burning. Modern induction heating systems quickly heat the inserts from the outside surface, limiting the heat energy to the outer edges where heat is needed to reflow the plastic. Longer heating cycles may result in the softening of the internal threads, especially at the low temperatures needed for heating brass inserts. Heating with induction is reliable, repeatable, non-contact and energy-efficient. Solid state systems, when used in conjunction with temperature sensing and control equipment, are capable of heating very small areas within precise production tolerances.

Typical RF power supplies for metal to plastic bonding range from 1 to 20kW, depending on the parts and application requirements.

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metal-to-plastic staking   metaltoplastic_13 Bonding plastic handles onto metal brooms With a more reliable induction heating system, they
will not have to worry about lost production due to power
supply issues that come with an unreliable system 		apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_12 Metal-to-plastic insertion of threaded magnetic steel inserts Outdated equipment and poor responsiveness drove this customer to a new vendor who could help them with new or improved processes for new or enhanced solutions apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_11 Bonding an Arthroscopic Device Induction is used to bond the device sheath to collet. Innovative coil design lifts production rate. apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_10 Heat a steel shaft for metal-to-plastic insertion Induction heating provides hands-free heating that involves no operator skill for manufacturing, even distribution of heating and localized application of energy limits temperature drift apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_9 Inserting brass bushing into plastic wire connector A three turn helical coil is used to heat the brass bushing. The brass bushing is heated for 2 seconds and then placed on the wire connector & pressed into position. apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_8 Heating magnetic steel for insertion into polypropylene for pallet manufacturing Induction heating provides “greener” manufacturing of pallets using reusable, recyclable materials, hands-free heating that involves minimal operator skill for manufacturing and even distribution of heating apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_7 Inserting threaded brass parts into plastic thermostat housing This application has three different coils for varying hole patterns. A three turn oblong coil is used to heat 2 brass inserts in close proximity. apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_6 Inserting a piston stop with o-ring into an oil pump assembly Induction heating provides increased production speed, simpler tooling for customer, hands-free heating that involves no operator skill for manufacturing apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_5 Bonding of electric motor shaft to nylon face fan Induction heating provides hands-free heating that involves no operator skill for manufacturing, only the metal shaft is heated so the motor is not affected, increased production due to rapid heating, decreased failure rate, originally used glue which ran into motor and caused failure and stronger bond apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_4 Heating Four Inserts Simultaneously The brass inserts are to be heated prior to insertion into a plastic automotive sub assembly apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_3 Brass Inserts Heating is to be accomplished within 5 seconds, and can be done in a helical coil since “pick and place” manufacturing is employed. apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_2 Plastic Lawn Chairs To heat internally threaded steel inserts to a temperature above 650F for insertion into plastic lawn chair assemblies. apps_able.php metal-plastic.php     db_mtlplstc.html    
metal-to-plastic staking   metaltoplastic_1 Brassiere Underwire To heat the ends of 0.072" spring wire, spaced 1/2" apart, uniformly for the application of nylon powder on a 1" length of the end. apps_able.php metal-plastic.php     db_mtlplstc.html