Nanfoss

Why the bar ships already hardened

Most die shops buy annealed bar and harden it themselves. That works, but it puts heat treatment, straightening and the grinding clean-up inside the buyer's own process, along with the scrap that comes from bars which move during quenching.

We do that work before the bar ships. It arrives at the hardness you asked for, straightened, ground, and with the four values we hold written down: ≤ 0.05 mm / 300 mm straightness, Ra 0.6 - 0.2 µm finish, ±1 HRC along the bar, and decarburization limited to 0.05 mm.

What we hold

Diameters below 30 mm are the sizes die shops use week to week, so they are kept in stock and dispatched in a few days. Larger bar is almost always for a particular job and is ground to it. Nine grades, from the standard chromium cold-work steels through high-speed steel to martensitic stainless for food and medical tooling.

Stocked diameters

Φ2 - Φ30 mm

Full range

Φ2 - Φ100 mm

Stock lengths

200 / 300 / 500 / 1000 mm

Custom work

Rotary dies to drawing, Φ25–Φ200 mm

The workshop

The machine set covers centreless and cylindrical grinding, vacuum heat treatment, straightening, surface grinding and polishing — several of them modified for particular jobs, which is why the standard model list would describe a different workshop from the one that actually runs. We are happy to walk a buyer through the equipment during a custom enquiry, where each machine can be explained alongside the process it serves.

Where to find us

Registered name:

东莞市屹信金属材料商行

Address:

广东省东莞市长安镇靖海东路6号401

WhatsApp:

+86 156 9587 5955

Email:

sales@nanfoss.com