Advantages of Laser Welding Copper
- Stable Welding for Highly Reflective Copper
0.5–2 mm copper welding, yield rate >95%. - Low Spatter and Clean Weld Seams
Reduces spatter by 30–60%; Weld seam consistency within ±0.05 mm. - Consistent Quality for Mass Production
Process repeatability (±2–3%) ensures stable welding quality. - Small Heat-Affected Zone
HAZ <0.3 mm, thermal deformation reduced 30–50%. - High Welding Speed and Easy Automation Integration
Compatible with robotic lines for automated production.
Do these problems frequently bother you during laser welding copper?
Copper is widely used in the electrical and energy industries due to its excellent electrical conductivity.However, laser welding copper faces many challenges.
1. High reflectivity, poor light absorption
Copper reflects most infrared laser light, making it difficult to absorb energy, resulting in incomplete melting and weak welds.
2. High thermal conductivity, prone to deformation
Copper has extremely high thermal conductivity, causing heat to dissipate quickly, hindering the formation of a stable molten pool, easily leading to burn-through, deformation, and uneven welds.
3. Excessive spatter, numerous pores
An unstable molten pool results in a large amount of metal spatter, which can damage the lens, contaminate the workpiece, and affect yield.
If the workpiece has poor strength, hydrogen porosity is easily generated during welding, leading to a weak, low-strength weld that is prone to cracking.
4. Extremely sensitive to process parameters
Highly skilled technicians are required; even slight deviations in power, speed, or focal length can result in weld failure, leading to poor stability and low yield in mass production, making mass production difficult.
5. Welding dissimilar metals is difficult (copper + aluminum / copper + stainless steel).
The large difference in melting point and thermal expansion leads to cracking, incomplete welds, and poor electrical conductivity.
No need to worry！
Grand Laser can offer effective solutions to overcome these challenges.
Our laser welding system is specifically optimized for copper materials, combining a high-brightness fiber laser source, precise heat input control, and stable welding parameters.
This integrated solution effectively addresses key copper welding challenges such as high reflectivity, rapid heat dissipation, spatter, and process sensitivity.
As a result, manufacturers can achieve stable welding for 0.5–2 mm copper, significantly reduce spatter by up to 70%, and maintain over 95% welding yield in mass production.
Applications of Laser Welding Copper
Copper alloys commonly used for laser welding include:
Laser welding is suitable for copper and its alloys (e.g., brass, bronze) due to its high energy density and low heat input .
Compared to traditional welding methods, our laser welding technology effectively reduces the oxidation of copper materials and ensures high conductivity at the welded joint.
Laser Welding Heat Exchanger Core
Through robotic laser welding, brass heat exchanger tubes can be joined to the tube sheet with exceptional precision.
The focused laser beam creates a clean, robust metallurgical bond at each joint, thereby minimizing thermal distortion and ensuring the integrity of the high-pressure seal.
This process is ideally suited for the manufacturing of precision heat exchangers, enabling efficient and consistent leak-free welding without the need for filler materials.
Laser Welding Industrial Copper Tube
Laser welding solves the high-reflectivity challenge of copper to create high-precision, leak-tight joints for industrial cooling water tubes.
With minimal thermal deformation and pore-free weld seams, it provides excellent sealing performance and corrosion resistance, ensuring long-lasting operation of the cooling circuit.
More about laser welding copper
- Laser Welding Copper Case
- Laser Welding Copper Video
- Laser Welding Copper Samples
—Case – Copper Ball Valve Welding – A Water Pipe Manufacturer
Material: Pure Brass
Thickness: 2-3 mm (Complete penetration not required)
Laser Power: 800 W
Welding Speed: 10-15 s/valve
Welding Condition:
If you have any other questions about our copper laser welding, please contact us when you are free.
Fiber laser welding machines (especially high-power models above 1500W) are the most commonly used for laser copper welding, as they have strong energy concentration and can effectively overcome copper’s high reflectivity.
Yes, our laser welding machines are designed for both high-precision and high-volume production.
With fast welding speeds and minimal downtime, they are perfect for mass production, delivering consistent quality and increased efficiency.