Hot Extrusion Special Profiles
Extruded steel sections for shapes that cannot be rolled or drawn
What Hot Extrusion Special Profiles Is and Who It Is For
Hot extrusion pushes heated steel through a die, which makes deep re-entrant shapes and thin webs possible that rolling cannot form. Tianhao uses it as one of the four forming routes for custom profiles, alongside hot rolling, cold drawing and cold rolling, and picks the route from the geometry on your drawing rather than from what one mill happens to own.
Key Benefits
- Complex and undercut cross sections become a single solid section
- Short runs are viable because extrusion tooling is simpler than a rolling stand
- Stainless, nickel and high temperature alloys extrude where they are difficult to roll cold
- The extruded section can be cold drawn afterwards when the tolerance demands it
| Cross section | to customer drawing |
|---|---|
| Steel grades | carbon, free cutting, alloy, stainless, nickel alloys, high temperature alloys, titanium alloy, brass and copper alloys |
| Secondary operations | cold drawing, heat treatment, straightening |
| Sampling | samples produced and inspected before volume production |
Who It Is For
- Designers with a cross section that no standard mill will roll
- Buyers needing moderate volumes of an awkward section
- Process equipment builders working in stainless and nickel alloys
Problems It Solves
- Rolling cannot form deep undercuts and re-entrant grooves
- Machining the same shape from solid bar removes most of the material
- Fabricating the shape from plate introduces welds in the load path
Technical Features
- Die based forming for complex cross sections
- Suitable for carbon, alloy, stainless and nickel alloy steels
- Can be combined with a cold drawing pass
- Heat treatment available after extrusion
Where Hot Extrusion Special Profiles Is Used
Deep grooved sections for locking and sliding systems
Deep grooved sections for locking and sliding systems
Complex guide sections for machine tools
Complex guide sections for machine tools
Stainless profile sets for process equipment
Stainless profile sets for process equipment
Sections feeding a second cold drawing pass to reach final tolerance
Sections feeding a second cold drawing pass to reach final tolerance
Materials
- Carbon steel
- Alloy steel
- Stainless steel
- Nickel alloys
- High temperature alloys
- Brass and copper alloys
Quality Control
- First article checked against the drawing before volume release
- Section geometry verified on the extruded and on the drawn condition
- Sample released to the buyer for inspection and testing
Customization Options
- Cross section to CAD or SolidWorks drawing
- Combination of extrusion and cold drawing
- Grade advice from our engineers when none is specified
How We Make It
Drawing review
Drawing review and route selection
Die manufacture
Billet heating
Hot extrusion
Optional cold drawing pass
Heat treatment
Heat treatment and straightening
How It Compares
Extrusion handles geometry that hot rolling cannot form, while hot rolling remains cheaper per metre for simple sections in long runs. Cold drawing after extrusion is the route when both the shape and the tolerance are demanding.
Use Guide
- Send the section as a CAD or SolidWorks file rather than a sketch
- Flag any undercut or thin web that must be held exactly
- Tell us the required tolerance so we can decide whether a drawing pass is needed
Often Ordered Together
Cold Drawn Special Profiles
Drawn sections held below 0.05 mm on size with a Ra under 2.5 um surface
View details
Custom Tailored Special Profiles
One cross section developed with our engineers from drawing to volume production
View details
Stainless Steel Special Profiles
Custom stainless sections drawn from CAD or SolidWorks drawings
View detailsWhere To Read More
Questions Buyers Ask About Hot Extrusion Special Profiles
When is extrusion better than rolling?
When the cross section has deep grooves, undercuts or thin webs that rolls cannot form.
Can an extruded profile reach cold drawn tolerances?
Yes, by adding a cold drawing pass after extrusion.
Do you extrude stainless and nickel alloys?
Yes, stainless, nickel alloys and high temperature alloys are all within the range we work with.
Get a Quote for Hot Extrusion Special Profiles
Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.