Forging Metals with Induction

Forging with induction heating
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  • Overview
  • Induction
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Forging

Forging - the oldest means of metalworking - includes methods of plastically deforming a metal by hammering, sometimes resulting in a stronger workpiece. Most often, a hot-forming process is used in which the temperature of the workpiece is elevated in an oven, by direct flame or by induction.

Open-die forging usually involves striking the workpiece with a hammer against an anvil: good for short-run or single-piece work.

In impression-die (or closed-die) forging, the workpiece is compressed between two die halves, such that the metal is deformed in the cavity between them. Forged pieces have outstanding grain structure and the best combination of mechanical properties.

Heating bar stock prior to hot-forming operatipon

Induction heating is a prime candidate for many forging applications. The process and economic inefficiencies of gas furnaces or flames are avoided with this unique technology which quickly and accurately delivers the required heating to the workpiece only. Additional benefits accrue since the heating can be integrated into the forging process nearer the die. With Ameritherm's modern technology, remote heat stations are placed directly into production lines for high volume rapid forging processes.

Heating bar stock prior to forging

Hot forging takes place at workpiece temperatures above which recrystallization occurs. This process requires uniform through-heating. Typical part geometries are simple, often comprising of bar stock, tubular products, and sheet metal.

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forging   forging_7 Preheating a billet for forging The client needed to improve the cycle time of their gas furnace, and by preheating it prior to insertion into the furnace, time was saved and the client didn’t have to invest in doubling the size of their furnace. apps_able.php forging.php     db_forging.html    
forging brass forging_6 Preheating a brass assembly for forging blanks : The client was using a competitor’s system, and it was heating the assembly at a slower rate. They needed to increase their production rate, which this solution was able to achieve. apps_able.php forging.php     db_forging.html    
forging steel forging_5 Preheating steel rods for forging in a fastener manufacturing process The client targeted an aggressive cycle time, which Ambrell was able to achieve thanks to its process design and the efficiency of induction heating apps_able.php forging.php     db_forging.html    
forging   forging_4 Preheating for forging of steel pins Fast, precise heating of the pin – 2 minutes and 36 seconds were saved on heating all of the rim’s pins when compared to using a torch apps_able.php forging.php     db_forging.html  
forging titanium forging_3 Preheating Titanium Rods for Forging Turbine Blades Induction heating provides increased production rates, repeatable, reliable & consistent heat without flame and hands-free heating that involves no operator skill for manufacturing apps_able.php forging.php     db_forging.html    
forging   forging_2 Forging Mold Release Push Rods To heat the ends of steel rods to 1800ºF prior to a forging operation. apps_able.php forging.php     db_forging.html    
forging steel forging_1 Steel Horse Shoes With an induction coil in place, the steel would be fed continuously from a roll through the induction coil and into the forging press. I apps_able.php forging.php     db_forging.html