Open Die Forging
Open die forging shapes hot metal between flat or simple contoured dies while the workpiece is repeatedly moved and rotated. It is the right choice for large, simple geometries, one-off replacements and low volumes where a dedicated die would never pay for itself.
- Piece Weight
- 5 kg – 500 kg
- Maximum Length
- Up to 2,000 mm
- Minimum Forging Ratio
- 3:1
- Materials
- Carbon, alloy, stainless, tool steel
- Typical Batch
- 1 – 200 pcs
- Delivery
- 7 – 20 days from material readiness
Open Die Forging at a glance
Quotable facts from Avadh Techno Forge, Gundasara, Gondal, Rajkot.
- Piece Weight: 5 kg – 500 kg
- Maximum Length: Up to 2,000 mm
- Minimum Forging Ratio: 3:1
- Materials: Carbon, alloy, stainless, tool steel
- Typical Batch: 1 – 200 pcs
- Delivery: 7 – 20 days from material readiness
Shapes We Produce Free-Form
Round and stepped shafts, square and rectangular blocks, discs, hollows, sleeves and rough rings all come off the open die line. Because there is no cavity, the geometry is created by the operator's manipulation and the forge master's sequence, giving complete freedom on length, diameter and step positions.
- Straight and stepped shafts up to 2,000 mm
- Discs and blanks up to 700 mm diameter
- Blocks, plates and rectangles
- Hollow sleeves and bushes
Forging Reduction and Grain Refinement
We work to a minimum forging ratio of 3:1 on critical parts, breaking down the as-cast dendritic structure of the ingot or bloom and closing internal voids. The result is a homogeneous, fine-grained section with consistent through-thickness properties — the reason open die forgings are specified for pressure-retaining and rotating duty.
When Open Die Forging Is the Economical Answer
If you need one to two hundred pieces, or a single replacement for a machine that is already down, open die forging avoids die cost completely and can be started the day material is available. It is also used to pre-form large blanks that are then finished on the closed die line.
People also ask
How quickly can an open die forging be delivered?
Typically 7 to 20 days from material readiness including machining, because no tooling has to be designed or cut first.
What is the largest open die forging you can produce?
Up to 500 kg piece weight and 2,000 mm length on our current equipment.
Does open die forging give the same strength as closed die?
Yes for the same grade and reduction. What differs is dimensional accuracy and machining allowance, not metallurgical quality.
Topics covered on this page
- open die forging company India
- open die forged shafts
- free forging Rajkot
- open die forging supplier Gujarat
- hammer forging India
Based on work carried out at our own forging plant at Gundasara, Gondal, Rajkot — operating since 2008.
Questions Answered
Is there a die cost for open die forging?
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No. Open die work uses standard flat and swage tooling, so you pay only for material, forging, heat treatment and machining. That makes it ideal for prototypes and low-volume spares.
Can you forge a replacement shaft from a sample?
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Yes. Send the worn part or a dimensioned sketch and our team will reverse engineer it, confirm the grade by spectro analysis, and forge a replacement with the correct machining allowance.
What machining allowance should I expect?
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Typically 4–10 mm on diameter and 5–15 mm on length depending on size and heat treatment route. We confirm the exact envelope on the drawing before forging.
Do you provide test certificates?
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Every open die forging can be supplied with chemical composition, mechanical properties, hardness survey and, where specified, ultrasonic examination as per ASTM A388.