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Aluminum Alloy Heat Treatment

Aluminum Alloy Heat Treatment

Aerospace & automotive aluminum alloy castings & profiles

High tensile strength / Thin part low warp / Fast quenching system

High-precision solution and aging treatment for aerospace & automotive aluminum parts, boosting tensile strength and minimizing thin-wall part warpage.

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Aluminum Alloy Heat Treatment

Solution

Aluminum castings and profiles rely on solution and aging treatment for stable strength. Slow quenching and uneven heating result in insufficient mechanical properties. Rexin dedicated aluminum furnaces use fast quenching and circulating hot air for 6061, 7075 and cast aluminum.

Overview

Aluminum alloy lightweight parts are widely used in aerospace equipment, new energy automobiles, precision instrumentation and industrial manufacturing. Solution and aging treatment are the key processes to determine the strength, toughness and dimensional stability of aluminum parts. Most aluminum processing manufacturers face common quality problems: incomplete solid solution leading to insufficient tensile strength, unreasonable aging parameters causing uneven hardness, rapid temperature difference leading to thin-wall part warping deformation, and slow quenching speed leading to structural attenuation. These defects directly cause unqualified product performance, failed factory inspection and high scrap rate, restricting product upgrading and market expansion.

 

Rexin professional aluminum alloy heat treatment equipment is specially optimized for the physical characteristics of aluminum materials. Equipped with independent fast quenching transfer system and 3D full hot air circulation device, it solves the industry’s common pain points of low strength, unstable hardness and easy deformation of aluminum parts. For aviation aluminum, cast aluminum and structural aluminum profiles of different grades, we support personalized process parameter setting, accurately complete solid solution strengthening and aging precipitation, ensure that aluminum parts obtain balanced high strength and toughness, and fully meet the high-precision manufacturing requirements of high-end equipment fields.

Common Aluminum Heat Treatment Defects & Targeted Solutions

1. Insufficient tensile strength & uneven hardness Ordinary furnace heating has insufficient temperature precision and uneven temperature field, leading to incomplete dissolution of heterogeneous phases inside aluminum alloy and disordered precipitation of strengthening phases. The finished product has low strength and uneven hardness distribution. We adopt grade-matched precise high-temperature solution process to fully dissolve internal impurity phases, and cooperate with constant-temperature aging parameters to promote uniform precipitation of strengthening phases, stably improving product tensile strength and surface hardness uniformity.

 

2. Thin-wall precision part warping & deformation Aluminum alloy has high thermal sensitivity, and rapid temperature rise and fall cause serious internal and external stress imbalance, resulting in irreversible warping deformation of thin-wall and complex structural parts. Our multi-stage slow temperature rise and balanced hot air circulation technology reduce internal and external temperature difference of workpieces, effectively control micro deformation of precision aluminum parts, and ensure dimensional tolerance compliance.

 

3. Solid solution structural attenuation & poor fatigue resistance Slow quenching transfer speed leads to natural precipitation of strengthening phases, attenuation of supersaturated solid solution structure, and reduced product fatigue resistance and service life. The independent fast quenching system shortens transfer time to the greatest extent, locks the high-strength solid solution structure, and maximizes the mechanical performance of aluminum alloy.

 

4. Batch performance inconsistency Ordinary equipment has local temperature dead zones, resulting in large performance differences of batch workpieces. Full-cycle 3D hot air circulation ensures no temperature difference in the furnace, and all batch aluminum parts have consistent strength, hardness and dimensional stability.

Common Aluminum Alloy Process Standard

Aluminum Alloy Grade

Solution Temperature

Aging Temperature

Optimized Processing Effect

6061 / 6063 Structural Aluminum 520℃–550℃ 160℃–180℃ Balanced strength and toughness, stable structural performance, suitable for automotive structural parts

7075 Aviation Aluminum

470℃–500℃

120℃–140℃

Ultra-high strength, ultra-low deformation, fully compliant with aerospace precision standards

A356 Cast Aluminum

530℃–545℃

150℃–170℃

Eliminate casting residual stress, improve wear resistance and structural stability

Multi-Grade Aluminum Process Customization

Professional process debugging for 6061, 6063, 7075, A356 and other aerospace and automotive aluminum alloys, targeted solution of strength insufficiency and deformation problems of different aluminum materials.

Ultra-Low Deformation Precision Control Service

Customize low-deformation heat treatment curves for thin-wall, special-shaped and high-precision aluminum parts, strictly control workpiece deformation within qualified tolerance, and meet high-end assembly precision standards.

Batch Performance Consistency Guarantee

3D full hot air circulation technology eliminates furnace temperature dead zones, ensures consistent strength, hardness and dimensional stability of batch aluminum parts, avoiding batch quality fluctuation losses.

Fast Quenching & High-Performance Optimization

Independent fast quenching transfer system locks high-strength solid solution structure, maximizes aluminum alloy mechanical properties, and helps customers produce high-strength lightweight aluminum parts.

Rexin Equipment Core Differentiated Advantages

Independent Fast Quenching Transfer System: Avoid solid solution structure attenuation, lock high-strength mechanical properties, and solve the industry problem of insufficient strength of aluminum parts after heat treatment.

 

3D Full Hot Air Circulation Design: Eliminate furnace temperature dead zones, realize omnidirectional uniform heating, and ensure 100% consistent performance of batch products.

 

Customized Low-Deformation Process Curve: Targeted process optimization for thin-wall, thick-wall and special-shaped aluminum parts to control deformation within industrial qualified tolerance range.

 

Dual Production Mode Adaptation: Box-type single furnace for small-batch high-precision customized parts; continuous production line for large-scale standardized aluminum profile processing, flexible to meet diverse order demands.

Conclusion

Solution and aging heat treatment is the core process to realize lightweight and high-strength manufacturing of aluminum alloy parts. Ordinary heat treatment equipment is limited by temperature control precision and quenching efficiency, unable to solve the common defects of low strength and easy deformation of aluminum parts. With mature aluminum material heat treatment technology and high-precision equipment configuration, Rexin provides targeted process solutions for different grades of aluminum alloys, effectively improving product mechanical properties and dimensional stability. We help global aluminum processing enterprises reduce scrap rates, stabilize product quality and enhance market core competitiveness.

 

Face aluminum parts low strength, uneven hardness or deformation problems? Get customized heat treatment process debugging & equipment solutions immediately.

 

Our Products: Mesh Belt Furnace, Vacuum Furnace, Box Furnace, Pit Nitriding Furnace, Brazing Line, Sintering Furnace

 

Related Application Industries: Heat Treatment Process, Hardware & Fasteners, Tooling & Cutting Tools, Stainless Steel Strip & Tube, New Energy Auto Parts, Powder Metallurgy, Heat Exchanger, Aluminum Alloy, Bearing Parts

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Do You Have Further Questions?

If you’re interested in our heat treatment furnaces or customized solutions, contact us for professional support and tailored quotations. We look forward to long-term win-win cooperation.