Hot Forging Shaping Metal in the Heat of the Fire

Hot forging and cold forging are two completely different process routes, yet they can deliver parts with almost identical outlines. Before making the final call, manufacturers always let the numbers fight it out in a “criteria ring.”

Hot Forging (a.k.a. Hot Forming)

First heat the metal until it turns “soft”—then hit it.

Steel: ≈ 1150 °C
Al alloys: 360–520 °C
Cu alloys: 700–800 °C

The temperature must sit above the recrystallization point to stop work-hardening from gate-crashing the forming party. Worried about oxidation? Switch to isothermal forging: pull a near-vacuum in the furnace and let the super-alloys run naked without rusting.

When Hot Forging Gets the Ticket

Single-piece or small-batch runs with quick die changes
“Good-enough” tolerance band
Oxide scale acceptable
No time for work-hardening slowdowns
Desire for uniform grains + high ductility
Need to wipe out chemical segregation in one go

The Small Print of Hot Forging

Dimensional precision is one notch looser than cold forging
Parts may “do the twist” while cooling
Grain size can vary along the section
High temperatures invite romance between metal and atmosphere

ZhuZhou Aite Cemented Carbide · Hot-Forging Scene

15 years in tungsten steel: rods, strips, dies, mining buttons—you name it.
Star product—cemented-carbide wire-drawing nib (die nib)—is shipped to customers, hot-forged into a steel jacket, and turned into a “back-pressure composite die” that instantly multiplies tool life.
Need tungsten-carbide forging dies or drawing-die blanks? One sentence: we can fire up the furnace any time.

Zhuzhou Aite Cemented Carbide Co., Ltd