The heyu vacuum annealing furnace for stainless steel is a horizontal, single-chamber, horizontal-loading unit built for bright annealing of tool steel, die steel, high-speed steel, ultra-high-strength steel, magnetic materials, stainless steel, and non-ferrous metals. Its all-metal heat shield uses back-insulation technology to improve heat retention, and heating can be specified as nickel-chromium strip, molybdenum, or graphite, paired with carbon felt, molybdenum sheet, or SUS304 inner shields. The chamber is compatible with Ar and H2 backfill, which is the combination needed to keep austenitic and ferritic stainless steel surfaces bright and free of oxide scale during solution and stress-relief cycles.
We support OEM/ODM builds and finalize quality through customer inspection and acceptance after installation. Standard chamber configurations ship on a 45-day production cycle. Stainless strips and parts come off the line bright and scale-free thanks to the Ar/H2 backfill, which removes the pickling, rinsing, and shot-blasting steps that normally follow annealed stainless production and shortens your downstream flow.
|
Parameter |
Value |
|
Maximum temperature |
1100 / 1350 / 1700 / 2300 °C |
|
Temperature uniformity |
±5 °C |
|
Ultimate vacuum |
4 × 10⁻³ / 6 × 10⁻⁴ Pa |
|
Pressure rise rate |
≤ 0.26 / ≤ 0.67 Pa/h |
|
Effective heating zone |
300×300×500 to 900×900×1500 mm (W×H×L) |
|
Loading capacity |
75 – 1500 kg |
|
Heating power |
60 – 480 kW |
|
Gas cooling pressure |
2 bar |
|
Process atmospheres |
Ar / H2 |
Application Fields
Austenitic stainless steel strip and sheet
Ar/H2 backfill prevents surface oxidation, eliminating pickling after solution annealing.
Stainless steel surgical and instrument components
Bright vacuum annealing leaves a clean surface that meets medical cleanliness requirements without post-treatment.
Ferritic and martensitic stainless steel parts
Wide temperature range covers both stress relief and soft annealing grades without surface decarburization.
Customization
Heating element (Ni-Cr strip, molybdenum, or graphite), inner shield material (carbon felt, molybdenum sheet, or SUS304), chamber size, loading capacity, and Ar/H2 ratio can be configured to your alloy and part size.
Packaging & Transportation
We support EXW and FOB terms. Equipment is packaged according to international export requirements based on the nature of the actual goods. For large equipment DDP is not available at this time; DDP can be provided for accessories and spare parts.
FAQ
Q: Do you support OEM/ODM services?
A: Yes, we support both OEM and ODM services.
Q: How do you control product quality?
A: Product quality is finalized through customer inspection and acceptance after equipment installation.
Q: What is the delivery time for standard products?
A: The production cycle for standard products is typically 45 days.
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