Tired of Frequent Heat Treatment Fixtures Failures?

Frequent heat treatment fixtures failures are mainly caused by insufficient heat resistance/creep resistance of materials, structural stress concentration, manufacturing defects, and improper use and maintenance. FH(Wuxi Junteng Fanghu Alloy Technology Co., Ltd.) heat-resistant steel fixtures can maintain long-term stability without deformation at 1200℃ through optimized material formulas, structural design and process control. They are suitable for high-temperature vacuum/controlled atmosphere working conditions, solving the pain point of frequent fixture replacement.

I. 4 Core Causes of Frequent Heat Treatment Fixtures Failures

II. Core Advantages of FH (Junteng Fanghu) Heat-resistant Steel Fixtures (Deformation Resistance at 1200℃)

1. Heat Treatment Fixtures Material Formula & Performance

• Core Materials: Premium high-end heat-resistant steels such as 3Cr24Ni7SiNRe and 1Cr25Ni20Si2 are selected, with microalloying of Nb/Ti added to form a stable austenitic matrix and strengthening phases. The long-term tensile strength at 1200℃ is ≥200MPa, and creep resistance is superior to ordinary 310S stainless steel.
• High-Temperature Stability: In high-temperature oxidation tests, the oxidation weight gain at 1200℃ for 1000h is ≤0.5g/m². There is no intergranular corrosion in vacuum environments. The thermal expansion coefficient is low (14.5–15.5×10⁻⁶/℃), and the deformation rate during thermal cycles is ≤0.1%.

2. Heat Treatment Fixtures Structural & Process Assurance

• Stress Optimization: Key parts adopt fillet transition (R≥3mm) and reinforcing rib design to disperse thermal stress and loads. The load-bearing area uses a composite structure to enhance rigidity.
• Manufacturing Process: Solution treatment (holding at 1100–1150℃ followed by rapid cooling) refines grains and reduces S/P impurities. Weld groove design and non-destructive testing eliminate welding cracks.
• Custom Adaptation: Customized according to furnace type (vacuum/pit/trolley furnace), workpiece weight/size, and process (solution treatment/brazing/carburization) to ensure long-term non-deformation at 1200℃.

3. Heat Treatment Fixtures Performance Comparison (vs. Ordinary Heat-Resistant Steel)

III. Recommendations for Long-Life Heat Treatment Fixture Usage

1. Process Matching: For 1200℃ working conditions, prioritize FH heat-resistant steel fixtures; for low-temperature (≤1000℃) applications, 310S can be selected to balance cost and performance.
2. Operation Standards: Adopt stepwise heating/cooling (rate of 100℃/h) to avoid thermal shock; control loads to ≤80% of the rated capacity and distribute workpieces evenly.
3. Maintenance & Upkeep: Regularly (monthly) inspect for deformation/cracks and clean the surface; conduct infrared temperature measurement quarterly to ensure uniform temperature field.
4. Composite Solution: Use FH heat-resistant steel for key high-temperature/load-bearing areas and stainless steel for auxiliary structures to balance performance and cost.

IV. Heat Treatment Fixtures Selection & Implementation

• Applicable Scenarios: 1200℃ high-temperature, vacuum/reducing atmosphere, high-load/high-precision fixtures (furnace bottom plates, racks, positioning jigs), especially suitable for continuous production and high-end processes.
• Procurement Verification: Request high-temperature tensile, oxidation resistance and creep test reports at 1200℃ to ensure performance compliance.
• FH (Junteng Fanghu) Services: Provide material testing, customized design, installation guidance and after-sales maintenance to ensure long-term stable operation of fixtures at 1200℃.

V. Summary
Frequent heat treatment fixture failures are mostly caused by improper materials, structures, processes or usage. Through optimized material formulas, structural design and process control, FH® (Wuxi Junteng Fanghu Alloy Technology Co., Ltd.) heat-resistant steel fixtures achieve non-deformation at 1200℃, extend service life by 3–5 times, reduce downtime and maintenance costs, and are suitable for efficient and stable production under high-temperature/severe working conditions.

FH® heat treatment fixtures are manufactured by Wuxi Junteng Fanghu Alloy Technology Co., Ltd.

Technical Dept.
Harper 
Email: harper@alloy-casting.com
WhatsApp/WeChat: 0086 17715681774
Wuxi Junteng Fanghu Alloy Technology Co., Ltd.
Office Add: Room 1105,Building 6, Jiaye Wealth Center,Wuxi, Jiangsu, P.R.China P.C.:214000
Factory Add: No.26 Baoyuan road, Section B Yangjian Industrial Park, Wuxi, Jiangsu, P.R. China P.C.:214107