Ambrell Induction Heating
Ambrell Induction Heating

Induction heating Application Notes

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Heating Surgical Tools for Coating Burn Off

To heat surgical tools to burn-off the nylon coating; the client had been using a torch for this application. Within seconds of the power being turned on, the coating on the tool began to smoke and soon started to bubble.

Heating Steel Cutting Tools for Carbide Removal

Using induction to heat magnetic steel cutting tools for removal of carbide cutting tips. Induction efficiently and precisely heats the client's part in a controlled manner delivering only the required heat.

Heating Steel Coated Copper Wire

In static tests, it was observed that it took 2.5 seconds to heat an 11” (279 mm) length of sample wire to target temperature.

Heating Steel Shafts for Forming (Medical Tools)

A custom-designed single position multiple-turn helical coil was built to generate the required heating for this application.

Heating Graphite Discs

A custom-designed single position multiple-turn pancake coil was built to generate the required heating for this application.

Heating Steel Pipe for a Casting System

The client wants to replace their resistive steel pipe heating process; it takes 15 minutes to reach the desired temperature.

Preheating Parts for Welding

Induction dramatically reduced the heating time they saw with torch heating as it dropped from 20 minutes to 3 minutes

Heating Steel Knives; Food Processing

To rapidly heat steel knives on the line of a food processing facility, improving efficiency; the client had been using a different heating method.

Drying Steel Rings with Induction Heating

To heat streel rings for a drying application; the client was using hot air but it wasn’t completely drying the rings

Preheating Rod Assemblies for Welding

The client had been using torches for preheating. However, due to process improvements thanks to new automation in their facility, torch heating became too slow. This resulted in a backlog that kept them from maximizing their throughput.

Induction Preheating Steel Laminate Parts

The c-lams are inserts for an automotive industry application. In production the robotic pick-and-place will occur for plastic overmolding after heating by induction.

Heating Busbars for Coating Release

Induction’s precision heating enables the part to heat to the exact targeted temperature, which prevented melting of the tin-coated copper part

Heating Automotive Battery Cables for Adhesive Melting

Temperature indicating paint was applied to the parts, and it took 10 seconds to heat the various styles of the part to the targeted temperature. This testing achieved the client's time and quality objectives.

Heating Lighting Tubes for Getter Firing

The getter firing application was complete within just 10 seconds. Induction delivers the same result time after time, making it ideal for their high-volume manufacturing process

Heating Wires and Strips for Coating Removal

The polymer coating on the aluminum strip behaved differently when heated. Visually, the coating turned brown and bubbly when the aluminum strip was heated

Heating an Aluminum Tube for Bending

Induction does not present an open flame into the work environment like a torch, resulting in a safer working environment

Heat a Fixture for a Wire Heating Application

Heat a non-magnetic metal alloy shape-setting fixture for a Nitinol wire heating/shaping application.

Heating a Tube Prior to Swaging

With the process designed by Ambrell's applications engineers, the tubing heated to temperature within five seconds. This result met the client's objective

Preheating a titanium alloy wire prior to welding

With an EKOHEAT 10 kW power supply, the titanium alloy wire can be heated to 2732 °F (1500 °C) in three seconds. This testing configuration simulates using three EASYHEAT 10 kW power supplies in series.

Heating a cutting knife, improving cut

In this example, induction heating provides consistent, repeatable results, a safe, reliable source of heat, measurable & stable results and less production scrap

Preheating a magnetic steel die

The induction process required 10 minutes to heat to the required temperature; the client's resistance heater took more than ten minutes. Also there will no longer be a need to open the chamber to remove the heater.

Heating aluminum wire to create screens

Induction will double production due to more rapid heating than infrared lamps can offer; with induction 100 feet per minute can be run instead of 50 feet per minute with infrared

Heating rods for thread rolling to create fasteners

This is part of an automated line. The system was sized and the coil was designed to ensure 45 parts per minute can be heated to the temperature required for hot forming.

Induction heating stainless steel inserts for an insertion application

Induction heating offers dramatically faster heating compared to ultrasonics which means dramatically increased production rates. Induction is highly repeatable and easy-to-integrate into manufacturing processes.

Hot forming a steel pipe with induction

A 2.5 inch steel pipe is heated by induction to the targeted temperature quickly with induction's repeatable process. EKOHEAT is easy to integrate into manufacturing processes and targets only the portion of the tube that requires bending while not heating the remainder of the tube.

Induction heating a steel grenade for a disposing application

The grenade was then placed inside the coil and power was turned on. After just two seconds the painted indicated, meaning the part achieved 800 °F (427 °C).

Tempering an audio speaker screen

The speaker screen was placed over the induction coil and the power was turned on. The screen heated to the desired temperature within just one second

Heating an aluminum-backed circuit board to reflow solder

Given the significantly faster heating time, induction improves throughput in this process and is a more efficient heating method than hot plate heating

Heating a Kovar tube for a glass sealing application

The client was using a torch, and operator error was slowing the heating. The repeatability of induction enables improved throughput while in this process it is a more efficient heating method than torch heating, also reducing scrap

Heating a chromel grid for an oxidization application

Induction delivers a dramatic reduction in heating time, enabling a significant increase in production while providing a more energy-efficient heating method than furnace heating

Heating fluid passing through an alumina tube

To heat an alumina tube to heat magnetic particles in order to heat fluid passing through the tube for an oil industry application

Heating the joint area of two lead plates for a butt welding application

The client was using a torch, which took five minutes; induction takes just one minute, which means an improved production rate and, unlike a torch, induction heating is precise and repeatable...

Induction heating cylinder liners for insertion into aluminum engine blocks

Temperature indicating paint was applied to the steel part for testing purposes. The part was then placed into the induction heating coil and the power was turned on. In just under 30 seconds, the part achieved temperature.

Heating stainless steel finned parts

Induction is a targeted, precise heating method with instant on/off, saving users energy and it is a flameless heating method, so it provides employees with a cooler, lower-risk working environment...

Heating a coated copper wire for a stripping application

The top 1 (25 mm) portion of the plastic coated wire was placed inside the helical coil and heating began. The top turn rapidly started to heat and the plastic melted after about 10 seconds of heating...

Heating a copper end cap to temperature to melt wax

To heat a copper end cap to temperature for a wax reflow application; the end product is a temperature stat and the client is looking to cut their heating time in half...

Preheating copper bars

To preheat two copper bars to temperature within 30 seconds; the client is looking to replace a competitor's 5kW induction heating system that is delivering unsatisfactory results

Heat steel plates of various thicknesses with induction on the same line

This in-line system enables the client to heat plates with significantly different thicknesses, while the feed-rate varies considerably based on the thickness of the part. Induction is the fastest method of heating steel plates to the required temperature

Preheating a copper rod and connector [epoxy curing]

Induction heated the part to temperature quickly in a far more efficient method than an oven, heating only the parts of the rod that required heating

Heating a titanium bracelet; create the desired finish

Within 35 seconds the center band of the bracelet turned black. The client had been using a torch, but looked to induction due to speed, safety and repeatability...

Preheating a titanium billet to temperature prior to rolling

Induction uniformly heats the large billet and the client's longer 15 foot billets quickly to 1800C.

Heating a nanoparticle solution to 40 °C

Heat a nanoparticle solution to get it to increase at least 40 °C for medical research/laboratory testing

Stress relieving flat blanks of carbon steel to reduce wheel hardness

Induction rapidly heats the carbon steel to temperature, enabling a rate of 30 feet per minute, not only saving production time, but saving energy costs. With a modest footprint, induction is easily implemented into production processes such as this one...

Heating an Inconel tube (incineration)

Induction offers uniform heating, which flame does not offer, is more efficient than flame and can rapidly melt the materials

Induction preheating a turbine blade (welding)

The end result is a preheating process that allows the part to move quickly to the welding step while meeting all quality requirements

Heating a steel ball on a pin by induction for an insertion application

While the project is new, the customer wanted the steel part to be heated to temperature within four seconds, and that was easily achieved and exceeded with the EASYHEAT power supply

Induction preheating steel rods for a welding application

Induction heating does a superior job penetrating the pin when compared to a torch, which is critical to preheating for welding and enables fast heating which can boost production compared to torch heating

Induction preheating a steel automotive transaxle (welding)

The steel axle was painted with temperature indicating paint and a thermocouple was attached to the part.

Heat a block of Haynes nickel alloy to test the crack growth rate

Testing was conducted to optimize the power delivered to the part. The coil was designed to minimize the voltage potential over the length of the part.

Induction preheating a steel plate for forging

The induction heating process achieved a production rate of 100 steel parts per hour, while a gas furnace produced 83 parts per hour; the process is repeatable and can be integrated into a production process

Induction Heating Tool-Steel Circular Dies to 400C in 10 minutes

Induction heating delivers heat directly into the steel part, saving energy and time, can be easily integrated with a press, presents a greatly reduced footprint compared with oven, batch, carts

Hardening steel pipe segments (sleeves)

Disappointed with low quality levels in a previously outsourced process, the customer uses induction to bring the heat treatment and the control of the end-product quality in-house.

Heating a steel wire for tempering

Induction heating delivers heat directly into the wire, saving energy and time, easy integration into production line, improving throughput, precise control of heat and even distribution of heat within the wire

Preheating aluminum flanges

Induction heating delivers higher quality end product vs. using an open flame convection furnace. Ovens are sensitive to ambient temperature and humidity variations and tend to produce uneven results

Heating a 4 Tubular Carbon Susceptor to 5400 °F (3000 °C)

A tubular carbon susceptor is held within an atmospherecontrolled quartz chamber. Induction is used to heat the susceptor

Pre-heating aluminum wheels prior to spray painting

This spray painting application requires pre-heating the material. Additionally, there is a requirement that the material must not cool below a certain target temperature prior to the spray.

Heat an Inconel tube for a swaging application

A need to increase volume and quality of parts production led to the choice of an induction process over flame. Handling is minimized and continuity is assured with the precision delivery of heating only where required.

Heating iron oxide (Fe3O4) nanoparticles in an aqueous solution for research

An eight turn helical coil is used to heat the vials. 0.0625 thick insulation is wrapped around the vial and the vial is placed in the coil. The optical temperature probe is inserted into the vial with the base of the probe located in the middle of the coil turns.

Heating a pin assembly to cut holes in a rubberized material

Induction heating provides precise and consistent application of heat, consistent and repeatable results, hands-free heating that involves no operator skill for manufacturing

Preheating a molybdenum anode for stress relief

A four turn helical pancake coil is used to heat the anode. The area on the anode to be preheated is the weld between the tube and flange.

Heating a steel chain for tempering

A twenty turn helical coil is used to heat the chain. The chain is fed through the coil at a rate of 1 meter per minute to reach the desired 1760 °F (960 °C) for the tempering process.

Heating top of aluminum oxygen tank for end forming

Through heating the top 2 (50.8mm) of aluminum oxygen tank to form a rounded end with a hole for oxygen valve

Preheating steel bar stock to forge a hot formed u-bolt

A fifteen turn helical coil with ceramic insert is used to preheat the 15 (381 mm) section of steel bar stock.

Heating a steel tie down assembly to loosen steel pin for rotation

Induction heating provides precise and accurate placement of heat without affecting surrounding areas, much faster process time, from hours to minutes, repeatable and consistent results and even distribution of heating

Heating a carbon steel plate with a tin coating for flow-melting

A nine turn Dog Bone style coil is used for the flow-melting process. The tin coated carbon steel plate is placed in the coil for 1.34 seconds to uniformly reflow the tin coating.

Preheat steel for reforming

Induction heating provides controllable heat pattern, ease of on site location use, safe, no open flames and even distribution of heating

Preheating steel garden tools for press stamping

Induction heating provides hands-free heating that involves no operator skill for manufacturing, configurable heating profiles, faster process times and even distribution of heating

Heating lead battery terminal for removal (recycling)

A single turn helical coil is used for this heating application. The lead terminal is placed inside the coil and is heated for 20 seconds.

Heating a steel pipe to transport melted magnesium

Induction heating provides controllable and repeatable heat pattern that keeps material in liquid form, the technology is environmentally friendly, delivering even distribution of heating . The movable workhead can be located away from the power supply

Heating magnetic iron oxide in water for hyperthermia application

Heating magnetic iron oxide (Fe2O3) in water for hyperthermia application to determine the curve of temperature vs. time during induction heating

Heating graphite susceptor for glass reflow for X-ray tubes

A two turn helical coil is used for heating. Six graphite susceptors are placed in the nitrogen atmosphere with glass discs and a stainless steel holder.

Heating a steel mold for rubber seal vulcanization

Induction heating provides repeatable and consistent heat, quicker process time, increased production and even distribution of heating

Heating a steel steam trap for calibration testing

To heat a steel steam trap to 212°F (100°C) to release steam for calibration testing

Heating threaded area of fastener

Induction heating is localized only to the threaded area, decreases production time with a flameless process and delivers even distribution of heating

Heating fastener blanks for thread rolling

Induction heating provides faster cycle times and extended tool life with preheat step, fands-free heating that involves no operator skill for manufacturing

Simultaneously heating six wire bundles to strip varnish

Induction heating provides hands-free heating that involves no operator skill for manufacturing. A multi-position coil provides simultaneous heating for quicker production times.

Heating a Nitinol spring assembly for shape setting

Induction heating provides hands-free heating that involves no operator skill for manufacturing, even distribution of heating along the wire. The wire is heat treated on the winding machine, eliminating a secondary process

Research: Heating effects on stainless steel & Tantalum discs

A three turn helical coil is used to heat the discs to 1400 °F (760°C).

Heating solutions in vials for cancer research

A four turn helical coil is used to heat the vial for 30 second intervals for five minutes with a temperature reading taken at each interval.

Preheating oil drilling shaft before welding

Induction pre-heating prevents shock to shaft which eliminates cracking in the welding phase. Hands-free heating that involves no operator skill for manufacturing.

Sintering copper powder to a stainless steel shaft

A four-turn helical coil is used to heat the assembly for five minutes. This provides slow, even heat for good penetration through the shell into the powder.

Bonding a Gasket to a Sombrero Nut

A multi-turn pancake coil is used to preheat the nut. It is then transported to the next station where it is pressed onto a gasket for bonding

Heating a motor prior to adding an injection molded part

Induction heating enables quicker process times with increased production rates versus a gas-fired oven. Ovens require long heat-up and cool-down times

Bulk heating a steel part prior to application of rubber molding

To preheat two irregularly shaped steel castings to be molded and bonded with synthetic rubber

Heat a braided cable prior to cutting

To preheat two irregularly shaped steel castings to be molded and bonded with synthetic rubber

Hermetically sealing glass-enclosed resistors

Induction heating provides precise, consistent heat to very small parts resulting in repeatable, quality seals. By heating with medium frequency, arcing (which occurs at high frequencies) is avoided.

Induction Tempering a Spring

Energy is applied directly to the springs only; surrounding air and fixturing are not heated.

Heating aluminium susceptor for powder expansion

Expand powder into solid form for use in crash helmets

Heating steel liners (engine head)

Precise direct heat to disengage the aluminium quickly and cleanly. The aluminium casing is recycled and reused thereby reducing scrap and cutting costs.

Conveyor steel plate heating

Heat steel plates on conveyor system in order to cook Welsh cakes.

Heat steel pliers handle for bending

Precisely heating the desired zone avoids overheating of part. This provides higher quality vs. heating with a torch.

Heat aluminum molds to release baked food products

Induction heating is safer than heating with a convection oven. Grease from the molds causes a fire hazard and waste gases in the oven.

Heat twelve steel tubes simultaneously

The coil is comprised of two (2) six-position helical coils connected together in parallel to reduce the voltage requirements on the power supply.

Heat automotive seat springs to powder coat

Even heating of the spring before dipping provides uniform flow and provides consistent thickness of the nylon coating

Heating of steel rivet ends (turbines)

Heating steel rivets prior to head forming

Pre-heating for a Hot-rolling Operation

Induction heating provides a much more rapid process compared to cold-rolling; the desired profile is achieved after a few seconds, compared with a few minutes.

Oxidation of Graphite Anodes

Heating carbon graphite anodes to destructively oxidize the parts to process embedded contaminants

Heat the end of catalytic converter for weld testing

Heat the end of lorry catalytic converter exhaust system. The assembly must be held at target temperature for 200 hours, whilst the assembly is vibrated to test the weld strength

Wire stripping (varnish removal)

An eight turn helical coil is used to generate the desired heat pattern. The coil has a 0.62 ID. An individual wire is inserted and heated to burn off the varnish for 5 seconds.

Heating Wire-impregnated Hose for Tube Forming

To reach a temperature of around 300 F requires a minimal amount of power.

Wire stripping (heating varnish)

Removal of electrical varnish from copper strands of various diameters

Heat setting of Nitinol

The Ambrell system heats the fixture to the set point at the rates specified and the Nitinol wire is shaped as desired within 4 minutes, using less energy and time than traditional oven heating methods.

Heating Copper Wire for Stripping

Removal of electrical varnish from copper strands of various diameters

Sintering Powdered Metals for Satellite Positioning System

A four turn helical coil is used for the sintering process. Power is applied for thirty minutes under a nitrogen flooding

Heating Eight Steel Rods Simultaneously for a Molding Process

Heat eight steel rods simultaneously to 212°F (100°C) for a molding operation.

Heating stainless steel rod for hot forming

Induction heating provides for hands-free heating that involves no operator skill for manufacturing, improved production rates with minimal defects, low pressure and minimal residual part stress with even distribution of heating

Pre-heating a Truck Axle Seam for Welding

To pre-heat the seam of a truck axle to over 300°F within 15 seconds for a welding application and maintain temperature within the welding zone

Heating an Engine Valve Head for Stress Testing

To heat the face of an engine valve head to 900°F and maintain the temperature for an extended time, high temperature stress test.

Repair of Glass Lined Tank

To heat selected areas of a glass lined steel tank to 16000 F in order to perform repairs of cracks and chips.

Stainless Steel Housing

To heat a stainless steel housing to 18750 F in order to fuse a piece of R6 glass to the inside of the housing.

Pre-heating a Titanium Rod for Hot Forming

A specially designed thirteen-turn helical induction coil is used to heat the titanium rod to 1700ºF (926.7°C).

Heating a Titanium Blade to Melt & Drain the Wax

Heat a titanium blade to 500°F (200°C) to melt and drain the wax from inside the blade.

Heating turbine engine fan blades for welding

To uniformly heat jet engine turbine fan blades to 1800°F (982.2ºC) within five minutes for a welding application

De-Carburizing Jet Engine Fuel Nozzle

Heat a jet engine fuel nozzle to 1400°F (760°C) in order to decarburize it.

Pre-heating single rod for hot heading

A seven turn helical coil is used to heat the rod. The rod is placed inside the coil and power is applied for two seconds providing enough heat to penetrate the inner core

Stainless Steel 'J' Tape

Induction heating provides for hands-free heating that involves no operator skill for manufacturing, improved production rates with minimal defects, low pressure and minimal residual part stress with even distribution of heating

Heat Setting A Shape Memory Alloy

Heat a steel die to 975°F (523.8ºC) to set (cure) a shape memory alloy nitinol in the correct position.

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Popular Induction heating Note

Important Induction Heating Literature


About Induction Heating

Induction heating is a fast, efficient, precise and repeatable non-contact method for heating metals or other electrically-conductive materials. The material may be a metal such as brass, aluminum, copper or steel or it can be a semiconductor such as silicon carbide,carbon or graphite. To heat non-conductive materials such as plastics or glass, induction is used to heat an electrically-conductive susceptor, typically graphite, which then transfers the heat to the non-conducting material.

Read our 4-page brochure; learn more about how the science of induction technology can solve your precision heating problems.



Induction Heating Work Coils

The work coil is the component in the induction heating system that defines how effective and how efficiently your work piece is heated.

Read our informative brochure explaining the fundamentals of induction coils and their design.



Solutions – from Electric Motors to Electric Vehicles

Induction heating is a popular method for heating metal parts in the
manufacturing processes of electric vehicles, supporting heating processes such as shrink fitting, brazing and metal-plastic insertion.

Read our 16-page brochure; learn more about how the induction heating can improve your electric vehicle and motor manufacturing processes.