The Double Hole Tungsten Copper Inlaid Electrode is a precision resistance welding component designed for stable current transmission, reliable heat control, and long service life in lap welding applications. It combines a chromium zirconium copper body with pure tungsten inlaid sections, offering both excellent conductivity and strong resistance to heat, pressure, and surface wear.
With its dual-hole inlaid structure, this electrode provides stable welding contact, improved thermal performance, and better durability during repeated welding cycles. It is suitable for automated welding equipment, sheet metal assemblies, electrical components, hardware parts, and customized resistance welding fixtures.
Technical Parameters
Item | Specification |
Material | Chromium zirconium copper + pure tungsten |
Structure | Dual inlaid holes |
Dimensions | 30 × 12 × 10 mm |
Tolerance | Based on drawings or national standards |
Process | CNC machining and welding |
Surface Finish | Smooth machined finish |
Application Method | Lap welding (upper/lower welding) |
Heat Load Capacity | Stable under continuous welding |
Customization | Size, structure, and tolerance optional |
All parameters may be adjusted according to user drawings and welding conditions.
Product Features
This electrode uses chromium zirconium copper as the main conductive body and pure tungsten as the inlaid working section. Chromium zirconium copper provides stable electrical conductivity and efficient heat dissipation, while pure tungsten improves heat resistance, pressure resistance, and surface durability.
This material combination helps maintain stable welding performance under repeated current, pressure, and heat, making it suitable for continuous production environments.
The double-hole inlaid design improves the stability of the working area and supports more consistent current distribution during welding. The tungsten inlays help strengthen the contact section and reduce deformation at the welding surface.
This structure is especially useful for welding applications that require repeated contact pressure, stable thermal transfer, and longer electrode service life.
During lap welding, the electrode must deliver current through overlapping metal sheets while maintaining stable pressure and accurate positioning. The double-hole tungsten copper inlaid electrode supports upper and lower welding by providing reliable contact and controlled heat transfer.
Its structure helps improve weld consistency, reduce contact surface wear, and support stable production quality during repeated welding operations.
The electrode is manufactured through CNC machining and welding to ensure dimensional accuracy, smooth surface quality, and reliable structural integrity. Controlled processing helps the electrode fit welding fixtures accurately and maintain stable alignment during batch production.
Custom machining is available for special hole sizes, hole spacing, inlay depth, working face shapes, thicknesses, and mounting structures.
Pure tungsten inlaid sections offer high resistance to heat and wear at the contact area. This helps reduce electrode surface damage caused by repeated welding pressure and thermal impact.
Improved durability helps reduce maintenance frequency, minimize production interruptions, and extend electrode service life in high-cycle welding applications.
Applications
The Double Hole Tungsten Copper Inlaid Electrode is suitable for a wide range of resistance welding and spot welding applications, including:
Sheet metal lap welding
Electrical equipment and household appliance components
Connectors, terminals, and sensor parts
Hardware brackets, hinges, and stamped parts
Carbon steel, stainless steel, brass, bronze, nickel alloy, and galvanized sheet welding
Automated upper and lower welding stations
Multi-point welding fixtures
Long duty-cycle production lines requiring stable heat control
Customized resistance welding equipment and tooling
It is particularly suitable for welding applications where standard copper electrodes wear quickly or where stable contact performance is required over repeated welding cycles.
Lap Welding Process
Lap welding joins two overlapping metal sheets by applying welding current and pressure through the electrode. Resistance at the overlap area generates localized heat, and the applied pressure helps form a solid welded joint after cooling.
In upper and lower welding, electrodes contact both sides of the workpiece. The double-hole tungsten copper inlaid structure helps maintain stable contact, reduce thermal deformation, and support consistent weld formation.
Stable current transmission through overlapping sheets
Reliable pressure application from upper and lower electrodes
Improved heat resistance at the contact surface
Reduced electrode wear during repeated welding cycles
Suitable for thin and medium-thickness metal sheets
Compatible with galvanized sheet and other coated materials
Efficient for automated multi-point welding applications
A lap welding electrode must provide good electrical conductivity, strong heat resistance, dimensional stability, and wear resistance. The chromium zirconium copper and pure tungsten combination helps meet these requirements by balancing conductivity with contact surface durability.
Customization Services
EAA provides customized tungsten copper inlaid electrodes according to customer drawings, samples, welding machine models, fixture designs, and actual production conditions.
The hole diameter, hole depth, hole spacing, inlay position, and tungsten insert size can be customized according to welding contact requirements and workpiece geometry.
Electrode length, width, thickness, working face size, and mounting structure can be produced according to specific fixture and equipment requirements.
The welding contact face can be customized as flat, stepped, angled, slotted, or special-shaped depending on the material thickness, welding position, and contact pressure.
Available surface options include precision-machined, polished, finely finished, cleaned, or anti-oxidation treated surfaces. Processing requirements can be adjusted to improve contact performance and installation stability.
Our engineering team can provide recommendations for electrode material selection, inlay structure, welding pressure, current setting, cooling conditions, and wear improvement based on actual production use.
Each electrode is manufactured with attention to material quality, machining accuracy, inlay stability, welding strength, and surface finish. Precision control helps ensure stable installation, consistent welding performance, and reliable use in automated welding equipment.
Quality inspection can be performed according to customer drawings, tolerance requirements, and applicable national or manufacturing standards.
EAA supports sample production, small-batch customization, and long-term batch supply for tungsten copper inlaid electrodes and customized resistance welding electrode components.
We provide stable manufacturing support for customers in automotive parts, electrical components, appliance manufacturing, hardware fabrication, sheet metal welding, and automated welding equipment industries.
Securing a reliable supply chain for critical manufacturing components is essential for maintaining your production schedules and profit margins. As a dedicated manufacturer and supplier, we focus entirely on delivering tangible value and technical superiority to your operations.
Direct Manufacturer Accountability: By eliminating intermediaries, we provide transparent communication and rapid implementation of your custom engineering requirements. You deal directly with the experts who craft your components.
Uncompromising Consistency: We understand that a single out-of-tolerance electrode can halt an entire automated line. Our rigorous in-house testing protocols ensure that the ten-thousandth unit performs exactly like the first.
Scalable Production Capacity: Whether you require a specialized small-batch run for a new product prototype or a continuous, high-volume supply for global manufacturing facilities, our agile production floors adapt to your volume demands.
Proactive Technical Consultation: We do not simply ship parts; we deliver solutions. Our metallurgical specialists are available to analyze your specific lap welding challenges, recommending precise material tweaks to optimize your cycle times.
Frequently Asked Questions (FAQ)
1. What makes tungsten copper suitable for lap welding?
It handles high heat and pressure while keeping stable current conduction, giving steady welding results.
2. How long does the electrode normally last?
Service life depends on welding force and sheet material, usually covering long production cycles under standard conditions.
3. Can you modify the double-hole structure?
Yes, hole size, depth, and layout can be changed based on drawings.
4. How should the electrode be maintained?
Keep the contact surface clean and ensure proper cooling during continuous welding.
5. What materials can this electrode weld?
Suitable for stainless steel, carbon steel, brass, bronze, nickel alloys, and galvanized sheet welding.
