Product Specifications
| Items/Model |
Unit |
HFTD-350-Y |
| Rated capacity |
KVA |
350 |
| Power supply |
V/Ø/Hz |
380V±10% / 3 phases / 50Hz |
| Rated duty cycle |
% |
100% |
| Primary current Max. |
A |
400 |
| Primary cable |
mm² |
3*70+2*16 |
| Short-circuit current Max. |
KA |
58 |
| Secondary voltage |
V |
13.8 |
| Hydraulic cylinder |
Ø*L |
Ø120*250 |
| Working pressure Max. (0.5/10.5MPa) |
KN |
200/400 |
| Cooling water demand |
/ |
0.2～0.3MPa,40 micron filtration, Resistivity of 5 kΩ.cm |
| Cooling water consumption |
L/Min |
240 |
| Throat depth |
mm |
320 |
| Distance between copper plates |
mm |
340 |
| Working environment |
/ |
temperature: 1～45℃ humidity: 35～90％ |
Product Overview
The HFTD-350-Y Copper Foil Welding Machine is engineered for diffusion welding of conductive metal components including copper busbars, copper bars, copper-nickel connectors, and laminated copper foil flexible connectors. This industrial welding system is specifically designed for applications in new energy, power equipment, energy storage, and related industries.
Compared to standard copper welding equipment, the HFTD-350-Y excels in project evaluation involving larger copper parts, wide copper flexible connectors, special-shaped copper busbars, and copper-nickel conductive components. For conductive copper parts, the critical challenge extends beyond basic weldability to include weld area uniformity, pressure stability, complete layer bonding, and prevention of local overheating during long-term current transmission.
For projects involving copper busbars, laminated copper foil connectors, copper-nickel transition parts, or customized copper conductive assemblies, customers can provide workpiece drawings, material thickness specifications, weld area requirements, and testing criteria. Haifei evaluates equipment configuration, tooling solutions, and sample welding feasibility based on specific application requirements.
Problem-Solving Capabilities
Uneven Bonding on Large Copper Welding Areas
When welding copper busbars, copper bars, or wide flexible connectors, uneven pressing can result in proper bonding in some areas while edges remain insufficiently bonded. The HFTD-350-Y addresses copper diffusion welding projects requiring stable pressing and larger contact areas, enhancing consistency across the entire welded surface.
Unstable Interlayer Bonding in Laminated Copper Foil Connectors
Multi-layer copper foil flexible connectors are sensitive to pressure, temperature, and welding time parameters. As layer count increases, issues like weak bonding, delamination, loose edges, or insufficient peel strength may occur. This machine can be matched with appropriate tooling based on foil layer count, welding width, and product dimensions to enhance weld area controllability.
Difficult Positioning of Special-Shaped Copper Busbars or Copper-Nickel Parts
Conductive parts used in new energy and energy storage systems often feature complex geometries including bends, holes, terminal areas, or mixed-material structures. The HFTD-350-Y can be configured with positioning references, pressing structures, and optimized loading methods according to workpiece shape, reducing welding variation caused by inaccurate clamping.
Appearance and Performance Variation in Batch Production
Conductive copper parts require evaluation beyond weld strength to include appearance, electrical performance, temperature-rise behavior, and batch consistency. For long-term supply projects, stable tooling, controlled parameters, and thorough sample verification prove more critical than single successful welds.
Key Product Features
- Designed for Wide Conductive Copper Parts: Suitable for welding copper busbars, copper bars, laminated copper foil flexible connectors, copper-nickel connectors, and related conductive metal components. For parts with larger weld areas, wider dimensions, or stricter pressing requirements, the machine can be matched with appropriate pressing heads, fixtures, and welding parameters.
- Focuses on Pressing Consistency in the Weld Area: Copper diffusion welding quality heavily depends on the balance between temperature, pressure, and contact surface condition. Uneven pressing can cause weak bonding or unstable electrical performance even with correct parameter settings. The HFTD-350-Y works optimally with dedicated tooling to maintain consistent weld position, pressing direction, and contact area.
- Suitable for Copper-Nickel Process Verification: Copper-nickel connectors are commonly used in batteries, electrical terminals, and new energy conductive structures. Given the different material properties of copper and nickel, bonding inconsistency or strength variation may occur during welding. This machine supports sample testing based on copper-nickel thickness, joint area, and performance requirements to help define suitable process parameters.
- Supports Conductive Parts for New Energy, Power, and Energy Storage Applications: Ideal for copper conductive connectors used in new energy, power equipment, and energy storage industries. For parts carrying current over extended periods, stable welded contact surfaces help reduce contact resistance variation and minimize local overheating risks.
Typical Applications
- Wide Laminated Copper Foil Flexible Connectors: Suitable for multi-layer copper foil flexible connectors, flexible conductive sheets, and battery flexible connectors. For wide, multi-layer, flexible structures, the system controls interlayer bonding, indentation, loose edges, and peel strength.
- Copper Busbar Connectors for Energy Storage Systems: Energy storage systems frequently utilize copper busbars, current-collecting busbars, and flexible connection structures. The HFTD-350-Y evaluates diffusion welding processes for these conductive connectors and improves batch welding consistency.
- Conductive Parts for New Energy Batteries: Suitable for copper busbars, copper foil connecting sheets, copper-nickel connecting sheets, and high-current conductive components in battery modules. Weld quality directly affects electrical stability, temperature-rise performance, and long-term reliability.
- Copper Bars and Busbars for Power Equipment: Used for copper bars, copper busbars, and conductive connectors in distribution cabinets, switchgear, and busbar systems. For high-current applications, stable welded contact surfaces help reduce overheating during operation.
- Copper-Nickel Dissimilar Metal Connectors: Suitable for copper-nickel sheets, copper-nickel conductive parts, and battery connection pieces. Customers should provide material combinations, thickness specifications, weld area requirements, and testing criteria for process feasibility confirmation through sample welding.
- Non-Standard Copper Conductive Assemblies: For copper conductive parts with bends, holes, special shapes, or specific assembly requirements, dedicated tooling and pressing solutions can be designed to improve welding stability and operational efficiency.
Product Advantages
- More Controllable Welding for Wide Copper Parts: The primary challenge in welding wide copper parts involves ensuring uniform pressure across the entire contact area. With customized pressing heads and fixtures, the HFTD-350-Y stabilizes the weld surface and reduces local weak bonding or insufficient edge bonding.
- Improves Delamination Issues in Multi-Layer Copper Foils: When some layers in laminated copper foil connectors lack proper bonding, peel strength and electrical performance can be compromised. By optimizing pressure, temperature, time, and tooling parameters, the machine enhances interlayer bonding and reduces delamination or weak joints.
- Reduces Overheating Risks in Conductive Copper Parts: Welding quality of copper busbars and copper flexible connectors directly impacts contact resistance. Diffusion welding creates stable joints over larger contact areas, helping minimize local temperature rise caused by poor contact. Final results should be verified through contact resistance, temperature-rise, or current-carrying tests.
Frequently Asked Questions
What products is the HFTD-350-Y suitable for?
The HFTD-350-Y is suitable for copper busbars, copper bars, laminated copper foil flexible connectors, copper-nickel connectors, wide conductive copper parts, and special-shaped copper conductive assemblies. It is commonly used in new energy, power equipment, and energy storage applications.
How is this machine different from the HFTD-150-Y?
The HFTD-350-Y is better suited for project evaluation involving larger copper parts, wider welding areas, and customized tooling. The HFTD-150-Y is more suitable for standard copper parts or medium-size laminated copper foil connector projects.
Can it weld multi-layer copper foil flexible connectors?
It can be evaluated for this application. Multi-layer copper foil welding requires confirmation of layer count, thickness, welding width, peel strength, and appearance requirements. Sample welding is recommended.
Can this machine weld copper-nickel connectors?
Yes. It can be evaluated for copper-nickel connector welding. Since copper and nickel have different material properties, process parameters should be confirmed according to material thickness, weld area, and electrical requirements.
Inquiry Guidance
If your product involves wide copper busbars, laminated copper foil flexible connectors, copper-nickel connectors, conductive parts for energy storage systems, or special-shaped copper conductive assemblies, the HFTD-350-Y Copper Diffusion Welding Machine can be evaluated as a project solution.
You can submit workpiece drawings, sample photos, material thickness specifications, weld area requirements, peel strength criteria, electrical testing requirements, and production capacity targets. Haifei evaluates actual products, arranges sample welding, designs tooling solutions, and recommends equipment configurations suitable for mass production.
