Hot Forming
Discover the advantages of induction heating!
HOT FORMING
Discover The Advantages Of Induction Heating!
Hot forming is a process in the manufacture of industrial fasteners such as bolts, screws and rivets. Heat is used to soften the metal which is usually a sheet, bar, tube or wire and then pressure is used to alter the shape of the metal by performing any of the following operations: hot heading, blanking, punching, slotting, perforating, trimming, shearing or bending. Besides, billet heating is also a process best performed with induction hot forming.
Modern induction heating provides many advantages over other heating methods and is commonly used for bonding applications. Heating through induction provides reliable, repeatable, non-contact and energy-efficient heat in a minimal amount of time. Induction heating is also ideal for in-line production processes because of its ability to produce repeatable, rapid and accurate heating cycles.
Ambrell has offered cutting-edge hot forming solutions since 1986. Our engineering expertise in developing hot forming solutions has benefitted many manufacturers across different industries worldwide.
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Benefits
Here are the advantages of hot forming with induction heating:
- springback effect is eliminated
- ductility is improved
- low pressure & minimal residual part stress
- better grain flow & microstructure
- improved mechanical properties
- reduced need for post production tempering & heat treating
- improved production rates with minimal defects
Expertise
Induction heating in hot forming is applied for several different purposes:
Heading - forming a head on blot, screw or rivet
Blanking - cutting a whole piece from sheet metal
Punching - cutting a hole
Slotting - cutting of elongated holes
Perforating - cutting a group of holes
Trimming - cutting away excess metal
Shearing - cutting in straight line across piece
Bending - producing single, double, straight flange, edge hem, curl or double hem bends
In order for the hot forming process to succeed, an application should be tested including the following variables. Ambrell's experienced applications engineers will provide you with the necessary advice and recommendation.
Variable |
Cold Form |
Warm Form |
Hot Form |
Temperature |
ambient |
400-900° F 205 - 480°C |
1300-2000° F 705 - 1090°C |
Die Pressure |
high |
lower |
lowest |
Stress |
residual |
medium |
minimal |
Grain Flow |
good |
better |
best |
Scaling |
none |
less |
more |
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.
Read 'About Induction Heating'

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.
Read 'Induction Heating Work Coils'

Four Ways To Contact Ambrell for Support
AMBRELL CORPORATION
1655 Lyell Avenue
Rochester, NY 14606
United States
F: +1 585 889 4030
AMBRELL B.V.
Holtersweg 1
7556 BS Hengelo
The Netherlands
AMBRELL Ltd.
Unit 6, Space Business Centre
Tewkesbury Road
Cheltenham, GLOS, GL51 9FL
United Kingdom
F: +31 546 788 154