Product Introduction
Types of Galvanized Steel Laser Welding Machines
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Standard Handheld Laser Welding Machine
Rated 4.75 out of 5$3,400.00 – $16,000.00Price range: $3,400.00 through $16,000.00 This product has multiple variants. The options may be chosen on the product page -
Portable Handheld Laser Welding Machine
Rated 4.50 out of 5$3,700.00 – $15,500.00Price range: $3,700.00 through $15,500.00 This product has multiple variants. The options may be chosen on the product page -
3 in 1 Handheld Laser Welding Machine
Rated 5.00 out of 5$4,000.00 – $15,700.00Price range: $4,000.00 through $15,700.00 This product has multiple variants. The options may be chosen on the product page -
Double Wobble Handheld Laser Welding Machine
Rated 5.00 out of 5$3,900.00 – $16,500.00Price range: $3,900.00 through $16,500.00 This product has multiple variants. The options may be chosen on the product page -
Double Wire Feed Handheld Laser Welding Machine
Rated 5.00 out of 5$6,800.00 – $15,800.00Price range: $6,800.00 through $15,800.00 This product has multiple variants. The options may be chosen on the product page -
Air-Cooled Handheld Laser Welding Machine
Rated 5.00 out of 5$4,900.00 – $6,900.00Price range: $4,900.00 through $6,900.00 This product has multiple variants. The options may be chosen on the product page -
3 in 1 Air-Cooled Handheld Laser Welding Machine
Rated 5.00 out of 5$5,100.00 – $7,100.00Price range: $5,100.00 through $7,100.00 This product has multiple variants. The options may be chosen on the product page -
Automatic Laser Welding Platform
Rated 4.75 out of 5$9,800.00 – $21,500.00Price range: $9,800.00 through $21,500.00 This product has multiple variants. The options may be chosen on the product page
Welding Thickness Reference
Laser Power | Welding Form | Thickness | Welding Speed | Defocus Amount | Protective Gas | Blowing Method | Flow | Welding Effect |
---|---|---|---|---|---|---|---|---|
1000W | Butt Welding | 0.5mm | 70~80 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely |
Butt Welding | 1mm | 50~60 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 1.5mm | 30~40 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 2mm | 20~30 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
1500W | Butt Welding | 0.5mm | 80~90 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely |
Butt Welding | 1mm | 70~80 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 1.5mm | 50~60 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 2mm | 30~40 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 3mm | 10~20 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
2000W | Butt Welding | 0.5mm | 90~100 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely |
Butt Welding | 1mm | 80~90 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 1.5mm | 70~80 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 2mm | 40~50 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 3mm | 20~30 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
3000W | Butt Welding | 0.5mm | 100~110 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely |
Butt Welding | 1mm | 90~100 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 1.5mm | 80~90 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 2mm | 70~80 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 3mm | 40~50 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 4mm | 20~30 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
6000W | Butt Welding | 1mm | 110~120 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely |
Butt Welding | 1.5mm | 100~110 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 2mm | 90~100 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 3mm | 80~90 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 4mm | 70~80 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 5mm | 40~50 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely | |
Butt Welding | 6mm | 20~30 mm/s | -1~1 | Ar | Coaxial/Paraaxial | 5~10 L/min | Welded Completely |
Compatible Galvanized Steel Grades
- G30
- G40
- G60
- G90
- G100
- G115
- Z100
- Z120
- Z140
- Z180
- Z200
- Z275
- Z350
- DX51D+Z
- DX52D+Z
- DX53D+Z
- DX54D+Z
- DX56D+Z
- DX57D+Z
- HX220BD+Z
- HX260BD+Z
- HX300BD+Z
- HX340LAD+Z
- HX380LAD+Z
- HX420LAD+Z
- HX460LAD+Z
- HX500LAD+Z
- S220GD+Z
- S250GD+Z
- S280GD+Z
- S320GD+Z
- S350GD+Z
- S390GD+Z
- S420GD+Z
- SGCC (JIS)
- SGHC
- SGCD1
- SECC
- ASTM A653 Grade 33
- ASTM A653 Grade 50
Application of Galvanized Steel Laser Welding Machines








Customer Testimonials
Comparison VS Other Welding Technologies
Comparison Item | Laser Welding | MIG Welding | TIG Welding | Stick Welding |
---|---|---|---|---|
Heat Input | Low (minimal distortion, less zinc burn-off) | Moderate | Low to Moderate | High (risk of zinc damage) |
Weld Speed | Very High | High | Low | Moderate |
Zinc Coating Preservation | Excellent | Moderate (often requires grinding) | Fair | Poor (heavy burn-off) |
Weld Cleanliness | Very High (no spatter) | Moderate (spatter common) | High | Low (slag and spatter) |
Fume Generation | Minimal | High (zinc fumes) | Moderate | High (zinc and electrode fumes) |
Post-Weld Cleanup | Minimal | Moderate to High | Low to Moderate | High |
Weld Strength | High | High | High | Moderate |
Welding Thin Material | Excellent | Poor (burn-through risk) | Excellent | Poor |
Automation Compatibility | Excellent (CNC/robotic ready) | Good | Moderate | Poor |
Precision | Very High | Moderate | High | Low |
Operator Skill Requirement | Moderate (automated options available) | Moderate | High | Low to Moderate |
Production Throughput | Very High | High | Low | Moderate |
Initial Equipment Cost | High | Moderate | Moderate | Low |
Operating Cost | Low | Moderate | High | Low |
Aesthetic Weld Finish | Clean, narrow, discoloration-free | Acceptable (often needs finishing) | Very clean (but slow) | Rough, inconsistent |
Why Choose Us
High Precision
Our machines deliver accurate, clean welds with minimal heat input, reducing distortion and ensuring strong, consistent joints across a wide range of materials and thicknesses.
Easy Operation
Designed with intuitive controls and user-friendly interfaces, our systems allow both experienced operators and new users to achieve professional results with minimal training.
Durable & Reliable
Built with high-quality components and strict quality standards, our welding machines provide stable performance, long service life, and low maintenance requirements.
Custom Options
We offer a variety of models and customizable features to match specific production needs, helping businesses improve workflow and adapt to changing manufacturing demands.
Related Resources

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Laser Welding VS TIG Welding
This article compares laser welding and TIG welding across key factors, including process, equipment, applications, costs, and suitability for various industries.

Laser Welding VS MIG Welding
This article compares laser welding and MIG welding in terms of process, applications, cost, quality, and efficiency to help readers understand their key differences.

What Is Laser Welding?
Explore the principles of laser welding, its benefits, applications, and how it compares to traditional welding methods. Learn how this advanced technology enhances precision and efficiency.
Frequently Asked Questions
How Much Do Galvanized Steel Laser Welding Machines Cost?
- Handheld Machines: Handheld laser welding machines for galvanized steel are compact, mobile, and suitable for light industrial applications, repair work, and low- to medium-volume production.
- Entry-level models start around $3,500 and offer basic welding capability.
- Higher-end handheld units priced closer to $18,000 may include features like dual-axis wobble heads, touchscreen control panels, and advanced safety systems, making them more suitable for continuous-duty operation.
- Automatic Machines: Automatic laser welding systems are designed for production environments requiring consistent, high-speed, and repeatable welds.
- Machines in the lower range of $10,000 to $18,000 typically offer basic automation like fixed-position welding heads or semi-automated gantry systems.
- Premium models reaching up to $30,000 often feature multi-axis robotic arms, advanced sensors for seam tracking, integrated cooling systems, and CNC-compatible controls. These are ideal for large-scale fabrication and industrial automation.
What Are The Disadvantages Of Laser Welding Galvanized Steel?
- Zinc Vaporization and Porosity: Galvanized steel is coated with zinc, which has a much lower boiling point than steel. During laser welding, the intense heat rapidly vaporizes the zinc at the joint. This creates high-pressure zinc gas that can become trapped in the molten pool, leading to porosity, blowholes, and weakened welds. Without proper gap design or venting techniques, this defect is difficult to avoid.
- Weld Cracking and Brittleness: The interaction between molten zinc and steel can also cause intermetallic compounds to form along the fusion line. These compounds tend to be brittle and may lead to hot cracks, especially in high-strength galvanized steels. Pre-weld treatments like zinc removal or controlled root openings are often necessary to mitigate this risk.
- Fume Generation and Health Risks: Zinc vapor doesn’t just impact weld quality—it also creates toxic fumes when it oxidizes. Without effective local exhaust ventilation (LEV) or fume extraction systems, the process poses serious respiratory hazards to operators. This makes safety planning and PPE (like fume-rated respirators) critical.
- Higher Equipment Requirements: Laser welding galvanized steel requires precise control of power, speed, and beam focus. In many cases, specialized optics or multi-pass strategies are needed to reduce thermal stress and manage zinc evaporation. This demands more advanced (and often expensive) equipment compared to welding plain carbon steel.
- Joint Design Limitations: Unlike traditional welding, laser welding has limited tolerance for joint gaps, especially when dealing with coated metals. Poor fit-up or inconsistent joint geometry can worsen defects caused by zinc outgassing, making part preparation and fixture accuracy more demanding.
- Additional Pre- or Post-Processing Steps: To minimize issues, fabricators may need to pre-clean or partially remove the zinc coating from weld areas using grinding or chemical stripping. In some cases, post-weld treatments like sealing, painting, or additional heat treatment are required to restore corrosion resistance and appearance.
What Gas Is Used For Laser Welding Galvanized Steel?
- Argon: Argon is widely used in laser welding applications, including galvanized steel, because it’s inert, readily available, and helps create a stable arc and clean weld zone. It prevents oxidation of the base metal and reduces the formation of zinc oxide particles, which can interfere with weld penetration and consistency.
- Helium: Helium offers higher thermal conductivity than argon, which allows for deeper penetration and narrower welds. It’s often used in mixed gas setups—such as argon-helium blends—when welding thicker galvanized parts or when higher energy density is needed. However, helium is more expensive and not always necessary for routine applications.
- Argon-CO2 Mixtures: While argon-CO2 mixtures are common in traditional MIG welding of galvanized steel, they are generally not used in laser welding. CO2 introduces reactive elements that can increase spatter and promote oxidation, leading to more defects in the weld seam.
- Nitrogen: Nitrogen can be used in some cases where cost is a concern and oxidation isn’t a critical factor. However, with galvanized coatings, nitrogen may interact with the zinc or steel surface and cause porosity or nitriding effects. It’s typically avoided unless specifically tested for the material system.
Does The Zinc Coating Affect The Laser Absorption Rate?
- Zinc Reflectivity and Laser Interaction: Zinc is a highly reflective metal, particularly in the near-infrared wavelengths commonly used by fiber lasers. When a laser hits the surface of galvanized steel, a significant portion of the energy is reflected off the zinc layer rather than absorbed into the base steel. This reduced absorption makes it more difficult to establish a stable weld pool and can hinder penetration, especially at lower power settings.
- Thermal Behavior of Zinc: Zinc also has a much lower melting point (around 419℃) and boiling point (around 907℃) than steel. During welding, the zinc layer heats up and vaporizes well before the underlying steel melts. This rapid vaporization can:
- Disrupt the formation of the weld by introducing turbulence into the molten pool.
- Create porosity or cracks due to trapped gas escaping violently through the weld.
- Complicated energy transfer, leading to inconsistent fusion.
- Why This Matters for Laser Welding: The mismatch between the thermal and optical properties of zinc and steel means that:
- Laser power must often be increased or focused precisely to penetrate the coating and reach the steel substrate.
- Shielding gas and joint design may need to be adjusted to accommodate zinc vapor expansion and reduce weld defects.
- Some manufacturers mechanically or chemically remove the zinc layer in the weld zone before welding, especially in critical applications.
How Thick Can Galvanized Steel Be Welded By Laser?
- 1000W laser: Suitable for welding galvanized steel up to 2 mm thick. At this power level, heat input must be carefully managed to avoid burn-through or excessive zinc vaporization.
- 1500W laser: Can typically weld up to 3 mm thick material. Still relatively low power, but capable of producing clean welds with proper speed and shielding gas.
- 2000W laser: Also effective up to 3 mm, although it allows for faster welding speeds and better penetration consistency than 1500W.
- 3000W laser: Supports welding galvanized steel up to 4 mm thick. More power improves stability and reduces sensitivity to surface coatings.
- 6000W laser: Capable of welding up to 6 mm thick. This level of power offers high penetration depth and better fusion across coated surfaces, provided vapor escape is managed properly.
Which Shielding Gas And Flow Rate Can Reduce The Formation of Zinc Oxide?
- Shielding Gas Selection
- Argon is the most commonly used shielding gas for laser welding galvanized steel. It is inert, displaces oxygen effectively, and doesn’t react with the molten pool.
- Argon-Helium mixtures (such as 75% Ar / 25% He) can be used to improve arc stability and penetration, especially in thicker sections or high-speed welding.
- Nitrogen is sometimes used as a cost-effective alternative, but it is generally less effective than argon in preventing zinc oxide.
- Recommended Flow Rate
- For handheld laser welding, a typical argon flow rate is 10–15 liters per minute (L/min). This range balances oxygen displacement without disrupting the molten pool.
- For automatic or robotic systems, the flow may range from 15–25 L/min, depending on the nozzle design, weld speed, and environmental conditions.
- Other Considerations
- Ensure proper nozzle angle and distance to keep the shielding gas focused on the weld pool.
- Use dual shielding or trailing gas nozzles when welding long seams to maintain protection as the zinc vapor escapes.
- Keep the work area ventilated to safely remove residual fumes and excess zinc vapor that the shielding gas doesn’t contain.
How To Reduce Porosity And Cracks When Laser Welding Galvanized Steel?
- Remove or Minimize Zinc in the Weld Area: The most direct way to reduce porosity is to remove the zinc coating near the weld zone. Mechanical grinding, sanding, or chemical stripping (e.g., using hydrochloric acid) can expose clean steel underneath. A 5-10 mm clearance on each side of the joint line is usually sufficient. This step helps prevent zinc vapor from disturbing the weld pool.
- Adjust Laser Parameters for Controlled Heat Input: Use moderate laser power with fast travel speed to reduce excessive heat buildup. Set the focus slightly below the surface to stabilize the weld pool and reduce keyhole collapse. Avoid excessive penetration that could trap vaporized zinc beneath the surface layer.
- Optimize Shielding Gas Type and Flow: Argon or an argon-helium mix helps maintain a stable arc and protect the weld from oxidation. A flow rate between 15-20 L/min is typical, but this may vary based on joint configuration and laser head design. Direct the gas nozzle at a 30-45° angle to sweep away vapor and prevent zinc buildup near the weld.
- Joint Design for Gas Venting: In lap joints or T-joints, add ventilation paths (e.g., small notches or holes) to allow zinc vapor to escape. Without proper venting, vapor can become trapped and cause blowholes or microcracks.
- Preheating for Thicker Sections: For thicker galvanized sheets, preheat to 150–200℃ to reduce the thermal gradient and slow solidification. This allows trapped gases more time to escape and helps avoid hot cracking.
- Use Filler Wire If Needed: Although laser welding is typically autogenous (no filler), adding a compatible filler wire can help bridge gaps, dilute the zinc concentration, and improve ductility at the joint.
- Post-Weld Cleaning and Testing: After welding, visually inspect the weld for surface porosity. Use ultrasonic or dye-penetrant testing for internal defects. Clean the weld area to remove any remaining zinc oxides or slag to prevent corrosion.
How To Reduce Smoke When Laser Welding Galvanized Steel?
- Remove the Zinc Coating from the Weld Area: One of the most effective methods to minimize smoke is pre-cleaning the steel. Mechanically grinding or chemically stripping the zinc layer along the joint—typically 5 to 10 mm wide—dramatically reduces vapor generation. This not only cuts down smoke but also reduces porosity and cracking.
- Use High-Efficiency Fume Extraction Systems: Install localized fume extraction units near the welding head. These systems pull zinc oxide fumes away before they accumulate, improving visibility and safety. The extractor should have a high capture velocity and include HEPA or activated carbon filters to trap metal particulates.
- Optimize Shielding Gas Flow: Use argon or argon-helium mixtures at a controlled flow rate (typically 15–20 L/min) to help displace vaporized zinc and reduce oxidation. Proper nozzle angle and distance can also assist in fume dispersal and stabilize the weld pool.
- Fine-Tune Laser Parameters: Reduce the heat input by increasing travel speed and adjusting laser power. Lower power settings (without under-penetration) and fast welding speeds reduce the amount of zinc that vaporizes. Controlled energy input minimizes the chance of excessive plume formation.
- Weld in a Ventilated, Negative-Pressure Environment: Welding in a booth or enclosure with negative pressure and directional airflow ensures fumes are pulled away from the operator and the weld zone. This also reduces recirculation of smoke into the workspace.
- Use Pulsed Laser Mode (if applicable): If your laser allows it, switch to pulsed mode rather than continuous wave (CW). Pulsed welding provides brief cooling periods that can limit zinc vaporization spikes and help control fume bursts.
- Position Weld Joint Designs to Vent Gas: In lap joints, gaps can trap zinc vapor and amplify smoke when it bursts out. Modify joint geometry to allow vapor escape—for instance, by including vent holes or spacing sheets slightly to release trapped gases gradually.