How long forging actually takes, from drawing to shipped part

Most people outside the industry picture forging as one machine hitting hot metal once. In practice it is three different processes, chosen by geometry and volume, followed by everything the part needs before it can be assembled.

Three ways to form the same billet

Hot forging. The billet is heated above its recrystallisation temperature before it goes into the die. Formability is high, which is why this is the route for complex geometry or heavier sections — the trade-off is dimensional accuracy tighter than hot forging alone can hold.

Warm forging. A middle ground. The billet is heated, but to a lower temperature than hot forging, which usually keeps dimensional accuracy tighter and press load lower than a fully cold process. It suits geometry too demanding to cold-form cleanly.

Cold forging. Formed at room temperature. The material work-hardens as it deforms, and dimensional repeatability across a long run is usually the best of the three. Material utilisation is high, because there is little left to machine away afterward. Regular, higher-volume geometry suits this route best.

None of the three is universally “better” — the part’s geometry, section and volume point toward one of them, and a shop that forces every part down the same route is optimising for its own equipment rather than your part.

Where the calendar actually goes

A drawing does not become a shipped part overnight, and most of that time is not spent at the press. For us, a typical production run — from a confirmed drawing and approved sample to shipped parts — runs 20 to 25 days, depending on geometry and the finishing operations the part needs.

Roughly, that time splits into:

• Tooling and first samples, if the part is new — die design, cutting, and a trial shot to check the part forges the way the drawing assumes.
• Production forging, usually the shortest single step once tooling exists.
• Heat treatment, machining, surface finishing and inspection — for most parts, this stretch takes longer than the forging itself.

That last point surprises people who are new to sourcing forgings: the press is rarely the bottleneck. A part that also needs heat treatment, CNC work and anodising will spend most of its 20–25 days in those downstream steps, not under the hammer.

What this means for planning a programme

If your project timeline assumes forging is a single fast operation, build the finishing chain into your schedule separately. Ask a supplier what happens to the part between forging and shipment, not just how fast they can forge it — the answer tells you whether they are quoting the whole job or just the part they are proud of.