Bellows Heat Treatment Furnace

Name: Bellows Heat Treatment Furnace
Brand: YuanHang

A specialized vacuum heat treatment solution for metallic bellows, expansion joints, and flexible hoses. By utilizing precise temperature control and high-vacuum protective atmospheres, it eliminates forming and welding stresses while ensuring zero oxidation and no discoloration, preserving the elasticity and fatigue life of the bellows.

Product details

Product Overview

This series of bellows heat treatment furnaces utilizes advanced vacuum atmosphere protection technology. It is specifically designed for solution treatment and stress relief annealing of stainless steel (304/316L/321, etc.) and superalloy bellows. Equipped with a fully sealed stainless steel muffle tank, it ensures that bellows remain isolated from oxygen during heating (up to 950°C), resulting in a clean, mirror-bright surface without the need for pickling.

Key Application Values

Performance Assurance: Effectively eliminates work hardening and residual welding stress, ensuring excellent flexibility and elastic modulus.
Surface Integrity: High-vacuum or reducing atmosphere protection achieves mirror-bright annealing, preventing wall thinning or crack risks caused by oxidation.
Fatigue Life: Uniform microstructure transformation significantly enhances the cyclic fatigue life of precision bellows under complex operating conditions.
Wide Applications: Ideal for instrument bellows, vacuum bellows, automotive exhaust pipes, and heat exchanger tube bundles.

Technical Specifications

Item	Specifications
Rated Temperature	950°C (Long-term stable operation)
Control Accuracy	±0.1°C (Segmented PID Regulation)
Uniformity	±3°C to ±5°C (Multi-zone heating)
Ultimate Vacuum	10^-1 Pa to 10^-3 Pa (Optional)
Atmosphere	N₂, Ar, H₂ (Precisely adjustable)
Loading Type	Vertical (Top/Bottom) or Horizontal (Customizable)