Custom Stainless Steel Wire Annealing Furnace | Continuous Bright H2 Atmosphere

This professional heat treatment furnace is designed for continuous or batch bright annealing of stainless steel wire (grades 304, 316, 201, etc.). A nitrogen-hydrogen protective atmosphere (ammonia decomposition gas) is maintained inside the furnace to keep the wire surface bright, preventing oxidation and blackening after annealing.

Available in three main types:

1.Continuous Tubular Furnace – for high-volume, multi-strand inline wire production

2.Pit/Bell-Type Furnace – for batch annealing of whole wire coils

3.Mesh Belt Annealing Line – for continuous processing of formed or coiled wire

Stainless steel wire passes through a sealed furnace chamber filled with H₂ + N₂ shielding gas.

1. Heating zone – Wire is heated to 1020–1120℃ (or 800–900℃ for general grades), recrystallizing metal grains and eliminating cold-working stress.

2. Soaking zone – Constant temperature holding homogenizes the internal structure and improves ductility.

3. Sealed cooling zone – Wire cools slowly under protective atmosphere, completely isolated from oxygen, resulting in a bright, oxidation-free surface – no pickling required.

For continuous tubular furnace: Wire moves continuously through heating → soaking → cooling sections.
For pit/bell-type furnace: Entire coil is loaded, heated, soaked, and cooled in batch mode.

1.Stress Relief – Removes residual stress from wire drawing, preventing bending and cracking during later use

2.Softening & Ductility Improvement – Reduces hardness, improves formability for weaving, bending, or deep processing

3.Bright Finish – Achieves a metallic bright surface without pickling or post-treatment

1. Pit furnace: for batch production of coiled wire
2. Bell furnace: for bright annealing of high-grade large coils
3. Continuous tube furnace: for high-speed mass production of straight wire
4. Mesh belt furnace: for short-cut stainless steel wire

Used for bright annealing of 201/304/316 stainless steel wire, which serves as raw material for wire mesh, springs, fasteners, medical wire, steel rope and kitchen wire products.

1.No post-annealing pickling – saves cost and time
2.Bright, metallic surface – ready for weaving or forming
3.Suitable for 304, 316, 201, and other austenitic stainless steel wires
4.Multiple configurations for inline mass production or batch coil processing