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Redefine Aluminum Flexible Connector Welding! Fully Automatic Aluminum Foil Diffusion Welding Workstation
Jul 30,2026
Aluminum flexible connectors are made by laminating and pressing multiple layers of aluminum foil. Aluminum foil is prone to oxidation and has a low melting point, making tight lamination between layers difficult. Conventional welding processes cannot thoroughly break the surface oxide film, often resulting in interlayer virtual bonding, internal gaps, delamination and unstable resistance. The Haifei fully automatic workstation for aluminum foil diffusion welding is developed targeting the processing challenges of aluminum flexible connectors. It adopts low-temperature molecular hot-press diffusion welding technology to realize molecular bonding of multi-layer aluminum foil, matched with a full-automatic integrated production flow.
I Customer Background & Pain Points
A manufacturer specializes in the production of flexible conductive parts including energy-storage-specific aluminum flexible connectors and aluminum foil expansion joints. Its products are mainly matched with energy storage cabinets and inverters.
Existing Welding Process Pain Points
1.Aluminum foil easily forms an oxide film. Traditional welding fails to remove it completely, leaving oxide interlayers between foils. This reduces effective conductive cross-sections and raises contact resistance, leading to excessive temperature rise during equipment operation.
2.Uneven heat input from conventional thermal welding coarsens aluminum grain structures and embrittle the base material. Products have poor bending and vibration resistance, prone to cracking and strip breakage in service.
3.Manual stacking, positioning and pressing deliver limited precision with inconsistent clamping force. Loading, positioning, hot pressing and cooling all rely on labor, resulting in low production speed and high labor costs.
4.Conventional welding easily causes surface burns, indentations and workpiece deformation.
II Customer Requirements
1.Adopt low-temperature constant-temperature molecular diffusion welding to mitigate aluminum surface oxidation, improve multi-layer fusion, reduce interlayer gaps and virtual joints, stabilize conductivity and control temperature rise.
2.Optimize constant-temperature hot pressing to relieve thermal defects and material embrittlement, retain the ductility of aluminum foil and enhance bending, vibration and fatigue resistance.
3.Build a full automatic production line to realize automatic loading/unloading, precise positioning, constant-temperature hot pressing, pressure holding forming and cooling discharging, cutting manual intervention and human-induced errors.
4.Minimize indentation, burn and deformation; support processing of aluminum connectors with various layers & specifications, as well as storage and traceability of process parameters.
III Custom R&D Solutions
A dedicated R&D team repeatedly adjusted and optimized solutions according to customer demands and aluminum welding difficulties.
1.Process Verification: Carry out multiple groups of low-temperature diffusion welding tests on aluminum connectors of different layers, thicknesses and widths. Optimize clamping pressure, constant temperature range, holding time and cooling rate based on aluminum material features to eliminate delamination, virtual joints, abnormal temperature rise and brittle cracking.
2.Equipment Selection: The integrated machine features automatic loading/unloading, precision positioning, constant-temperature diffusion welding, pressure holding cooling and automatic discharging for continuous cyclic production. Low-temperature low-pressure molecular diffusion technology thoroughly removes aluminum oxide films and realizes atomic interpenetration between foils, boosting interlayer compactness and conductive stability.
3.Fixture Design: Custom exclusive pressing jigs with flexible uniform pressing structures, suitable for ultra-thin aluminum foil lamination to eliminate tiny interlayer gaps and uniformize fusion.
4.Core Advantages
Compact fusion: Tight interlayer fit & stable conduction
Flexible & durable: Resist bending, vibration & fatigue
High efficiency & easy operation: Fully automatic, wide compatibility
IV Delivery, After-sales & Customer Feedback
Pre-acceptance and equipment inspection were conducted. Continuous trial operation maintained stable welding yield. After commissioning, all original production pain points were solved. The customer praised our timely, professional after-sales service.
V Haifei’s Mission: Meet Customized Customer Demands
Haifei adheres to the philosophy of "Creating Value for Customers". We develop customized equipment according to your welding requirements, whether you need automatic, integrated or whole-line solutions. We uphold the aspiration of "Striving for the Rise of Chinese Industry" and corporate values of Gratitude, Progress, Altruism and Win-win Cooperation, contributing to intelligent equipment manufacturing in China.
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Wuxi HAIFEI Intelligent Equipment Co., Ltd.
Wuxi HAIFEI Welding Equipment Co., Ltd.
Add: 28 Shuiyun Road, Yuecheng, Jiangyin, Jiangsu Province, China. (Postal Code: 214404)
Mobile: +86 18915302352
Email: wushijie@jshaifei.com