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Hot Forging Services

Hot forging involves heating and shaping the metal by using tools such as a hammer, power hammer or die to press metal into the desired shape. The high heat in hot forging realigns the grain structure of the material to make the metal stronger. This is why hot forging is ideal for components that require high strength and durability. Parts that have been hot forged also offer good yield strength, high ductility and low hardness, and the surface finish of these parts lends itself to many finishing and polishing processes.

Hot Forging Process

The hot forging process works by heating the material to a certain temperature and then shaping it with various tools. Hot forging is performed at very high temperatures: up to 1150 °C for steel forgings, 360 to 520 °C for aluminum alloy forgings, and 700 to 800 °C for copper alloys forgings. These temperatures go above the recrystallization point of the metal to prevent strain hardening of the metal. The high heat makes the material malleable and elaborate shapes can be created, making this one advantage that hot forging has over cold forging. Hot forging allows for flexible design and a wide range of components types, including flanges, gears, cylinders, valves, tubes, wheel hub unit bearings and more.

Our Hot Forging Capabilities

CM International produces hot forged parts from 1”-30” in size (12mm-750mm) and works with many materials, including aluminum, carbon steel, alloy steel, stainless steel and more. We offer a 12 week lead time for large orders and our tolerances are always to customer specifications based on the size of the part, with general tolerance per ISO 2768 /ASME Y14.5-2009. We are headquartered in Chicago with outsource manufacturing facilities located in China, which allows us to provide high-quality, cost-efficient hot forged components to our US customers.

Secondary Operations:

Conventional Milling and Turning; CNC Machining and Turning.

Tertiary Operations Plating:

Zinc Plating, Chrome Plating, Tin Plating, Nickel Plating, E-coating, Black Oxide, Anodize, etc.

Heat treatment:

Annealing, Normalizing, Tempering, Quenching, Induction Harding etc.