Ductility for the next step
Hardness and residual stress fall, so parts can be bent, flared or deep-drawn without cracking.
Bright annealing
Softer, stress-relieved and bright – without pickling.
Parts run through continuous furnaces under pure hydrogen or nitrogen atmospheres. No oxygen reaches the hot metal, so no scale forms – the parts leave the furnace with the surface they went in with.
We anneal the sheath tubes of our own heating elements this way every day; the same lines take stainless and steel parts from other manufacturers, from small high-volume parts to larger low-volume ones.
Continuous line
Processes
Four heat treatments, chosen by material and purpose.
| Process | What it does | Typical materials |
|---|---|---|
| Bright annealing | Recrystallises cold-worked metal: lower hardness and residual stress, ductility restored, bright surface. For austenitic stainless at 1040 – 1100 °C, followed by rapid cooling. | 300 and 400 series stainless steel, nickel alloys |
| Stress relieving | Reduces residual stresses from forming, welding or machining with little change in hardness – less distortion later. | Stainless and carbon steel parts |
| Normalising | Refines and evens out the grain structure of steel after forming or forging. | Carbon steels and other ferrous alloys |
| Tempering | Lowers brittleness after hardening, at a controlled loss of hardness. | Hardened steels |
What changes in the part
Formable, not stronger.
Annealing does not raise strength. It makes the part formable again and gives stainless steel the full corrosion resistance of its grade.
Corrosion resistance of the grade
Carbides at the grain boundaries are dissolved – protection against intergranular corrosion.
Bright surface
No scale, no discolouration, no pickling – ready for brazing, assembly or visible use.
Background on the metallurgy: bright annealing technology.
How we run your parts
Same cycle, every lot – and you can trace it.
- Trial: temperature, line speed and atmosphere set for material and wall thickness.
- Release: trial parts checked for hardness and surface, then sent to you.
- Series: the released cycle runs every lot, with heat-lot tracking.
- Return: parts packed to protect the surface, shipped back with the lot data.
Annealing line · Kahramankazan
Tell us material, size and quantity.
We propose the treatment and the cycle, run a trial where needed and quote per lot.