What Is Induction Hardening?
Induction is used to elevate the surface temperature of steel or other alloy in order to improve the wear resistance or to treat a select region of the material.
How Induction Hardening Works
Induction hardening and heat treating are ideal for many applications in the transportation, aerospace, and energy industries, for processes like through hardening and case hardening.
To quickly heat a steel surgical blade to 2000°F (1093°C) within 2 seconds so as to harden the blade edge.
A four-turn helical concentrating coil is specially designed to deliver uniform heat to the steel seat belt retraction gear.
A torch isn't as precise as induction nor is it repeatable; induction heating is highly repeatable, uses less energy than a torch and offers instant on/off heating
The coil design enabled the part to be raised into the heating coilfrom the bottom. The design was also made to ensure it will work well within the customer's current setup...
Induction heating enables precise application of heat, faster process time and production rates and the ability to be incorporated into existing production lines
A single turn helical coil is used to heat the gear. The gear is placed on a spindle and rotated at 300-350 RPM's.
A five turn helical coil is used heat the screw threads. The screw is placed in the coil, heat is applied for 8 seconds to achieve a 2 long zone at the required hardness.
To harden various size ends of hand held marking stamps. The area to be hardened is 3/4 (19mm) up the shank.
Hardening the cam outer surfaces with induction results in uniform heating for uniform results, one coil can be used for many geometries, consistent results from piece to piece
A five turn helical coil is used to heat the gear end of the shaft to 1700°F
Heat cast iron pulleys to 1600°F(871.1°C) in order to achieve a hardness of 55 Rockwell C.
A two turn helical coil with an internal quartz tube designed to scan the length of the blade is used to heat the blade to 1850°F (1010°C) to achieve the desired hardness.
The hardness desired is between 45 to 55 Rockwell C, and should be measured 0.062in (1.6mm) from the cutting edge.
Materials that can be hardened with induction
Induction can be applied to harden many types of cast irons and steel alloys.
Heat Treating Applications
Through hardening treats the entire part and is used on medium and high carbon steels for moderate strength and surface hardness. Because through hardening requires a deep penetrating heat that can damage the surface of a component if not regulated precisely, induction heating is an excellent solution for this application.
Case hardening treats the part’s surface area and some of the interior area, according to the depth of hardening requirements of the application.
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.