Cold Forming
Stronger by design - strength built into the grain, not added later.
Cold forming reshapes metal at room temperature under high pressure, improving strength through work-hardening while achieving tight tolerances and near-zero material waste.
Overview
Cold forming passes coil stock continuously through a series of rolls that progressively form the strip into long parts with a constant cross-section. Cold working hardens the finished product, material utilization is extremely high and the process runs continuously at high speed - a low-cost solution for high-volume production of long parts such as guide rails, rack uprights, C/Z sections and edge trims.
How the Process Works
Cross-section development calculation and roll pass design
Uncoil and level the coil, then feed continuously
The strip passes through multiple sets of rolls in successive passes for progressive forming; cold work hardening increases strength
Cut to length, with straightening or sizing where necessary;
Punching, bending, welding etc. as required by the product;
Inspection of cross-section dimensions and straightness; accepted parts proceed to surface finishing or packing.
Key Advantages
- Work hardening increases strength - cold forming work-hardens the metal, so the finished part is stronger than the raw material.
- Tight tolerances - multi-pass roll control gives excellent cross-section consistency.
- Virtually no material waste - continuous roll forming delivers extremely high material utilization with minimal scrap.
- Continuous high-speed production - coil is fed and formed continuously, ideal for long parts in high volumes.
- Complex sections possible - progressive multi-pass forming completes constant-section complex shapes in a single run.
- Good surface quality - cold forming without heating avoids oxidation, giving a smooth surface and stable dimensions.
- No heating required - cold working needs no heating energy and avoids heat distortion.
Materials We Process
Carbon steel and alloy steel wire
Stainless steel
Aluminum and aluminum alloys
Copper and brass
Typical Applications
- Bolts, screws, rivets and studs
- Pins, shafts and dowels
- Connectors and electrical terminals
- Small precision components for assemblies
- Automotive and machinery fasteners
- Hardware and furniture fittings
Capability at a Glance
|
Parameter |
Details |
|
Processes |
Cold heading, progressive forming and thread rolling |
|
Typical sizes |
Part-dependent; from small fasteners to medium-diameter shafts |
|
Material range |
Carbon steel, alloy steel, stainless steel, aluminum and copper alloys |
|
Strength improvement |
Work-hardening and optimized grain flow |
|
Secondary options |
Thread rolling, heat treatment, coating |
|
Volume |
Optimized for medium to high volume production |
Frequently Asked Questions
Q: What products is cold forming suitable for?
A: Long, constant-section continuous parts: profiles, guide rails, rack uprights, C/Z sections, edge trims, etc.
Q: Are roll-formed parts strong enough?
A: Cold forming work-hardens the metal, so the finished part is stronger than the raw material.
Q: Can you form complex sections?
A: Yes. Progressive multi-pass roll forming completes complex constant-section shapes in one continuous run.
Q: How do I choose between cold forming and stamping?
A: Stamping produces flat / discrete parts (die stamping); cold forming (roll forming) produces long, constant-section parts with continuous production and higher material utilization.
Q: Does cold forming require tooling?
A: Roll tooling is required; the higher the volume, the lower the amortized cost. Changing product means changing the roll set, so it suits high-volume, established products.
Q: Can you deliver with surface finishing?
A: Yes - after forming, grinding and surface finishing (plating / coating, etc.) are carried out and delivered as a complete package.
Work With Us
Send your part drawings and annual volume for a cold forming feasibility review. We will confirm whether cold forming delivers the strength, tolerance and cost advantage your part needs.