A 4 in 1 laser welding machine is a laser processing machine that combines welding, cleaning, cutting, and weld seam cleaning in one system. Different functions are selected by changing the operating mode and matching the nozzle. The machine can process stainless steel, carbon steel, aluminum, and other common metals. Compared with traditional single-function equipment, it reduces the need for multiple machines, occupies less floor space, and allows welding, cutting, and cleaning tasks to be completed on the same platform. It is widely used in metal fabrication, equipment maintenance, repair work, and small-batch manufacturing.
The 4 in 1 laser welding machine adds the weld seam cleaning function compared to the 3 in 1 model, but it does not include the weld seam shaping function found in the 5 in 1 model. Learn More：3 in 1 Laser Welding Machine, 5 In 1 Handheld Metal Laser Welding Machine.
A 4 in 1 laser welding machine can perform welding, cleaning, cutting, and weld bead removal using a single laser source. By switching between different operating modes and nozzles on the welding torch, you can select various functions, allowing a single machine to perform a wide range of metalworking tasks.
For an in-depth look at the structure of welding guns and nozzles, read the article: High-Performance Handheld Laser Welding Gun
The laser welding system utilizes a specialized laser welding nozzle and is suitable for welding stainless steel, carbon steel, aluminum alloys, and other metallic materials. It is widely used in the production of kitchen and bathroom products, sheet metal fabrication, hardware manufacturing, automotive repair, and new energy battery trays. This process features a small heat-affected zone, minimal distortion, high welding speed, and clean weld bead appearance. It is suitable for welding stainless steel, carbon steel, aluminum alloys, galvanized steel, and dissimilar metals.
The laser cleaning function utilizes specialized laser cleaning nozzles to remove rust, oxidation layers, paint, oil, and other contaminants from the surfaces of metal parts. It is widely used in areas such as pre-welding surface preparation, rust removal, coating removal, equipment maintenance, and metal refurbishment. This process does not require the use of chemicals or abrasives and is suitable for carbon steel, stainless steel, aluminum alloys, titanium alloys, and other common materials. It can be used for both manual cleaning operations and automated production.
The laser cutting function uses a dedicated laser cutting nozzle to cut carbon steel, stainless steel, aluminum alloy, zinc alloy, and other materials. It is widely used in sheet metal fabrication, kitchen equipment, elevator manufacturing, home appliances, automotive parts, and metal product processing. The process produces narrow kerfs, smooth cut edges, and a small heat-affected zone, with cutting accuracy.
The weld seam cleaning function removes welding slag, oxide layers, and discoloration after welding, using a dedicated Weld Seam Cleaning nozzle. It is used on carbon steel, stainless steel, and aluminum alloy parts to improve weld appearance and surface condition. The process is non-contact and does not require chemical cleaning agents, suitable for post-weld cleaning in metal fabrication and maintenance work.
The 4 in 1 laser welding machine integrates welding, cleaning, cutting, and seam cleaning into one system, allowing multiple metal processing tasks to be completed on a single handheld unit. It supports flexible operation across different materials and working conditions, making it suitable for fabrication, repair, and on-site metal processing applications.
This 4-in-1 laser welding machine integrates welding, cutting, cleaning, and weld finishing in one unit. It provides precise, efficient, and versatile processing for different industrial applications. The machine produces smooth welds, accurate cuts, clean surfaces, and improved weld appearance. Below are the results of each function.
Suitable for stainless steel and aluminum alloys (2–8 mm) and carbon steel (3–12 mm), with a weld width of up to 8 mm. It delivers smooth, uniform welds with deep penetration and strong joints, while keeping distortion and spatter to a minimum for industrial applications.
Before welding, it removes rust, oxide layers, and oil from metal surfaces without chemical agents. It is a clean and eco-friendly process. Cleaning widths of 30 mm (150 mm focal length), 60 mm (400 mm focal length), and 120 mm (800 mm focal length) are available.
The laser welding machine can be used with a cutting torch to cut thin metal sheets from 0.5 to 3.0 mm. It produces a cutting width of ≤0.3 mm and smooth edges without extra processing. It can be operated by hand or in automated setups and supports fast cutting for different working conditions.
After welding, the weld seam is treated with laser polishing and micro sandblasting to remove slag and oxide layers, leaving a smooth and uniform surface without spatter. The treatment width is 5–8 mm. Energy and speed can be adjusted based on weld depth to improve weld appearance and coating adhesion.
Used for welding, cutting, and cleaning of stainless steel and carbon steel parts, such as cabinets, frames, and enclosures.
Applied in stainless steel sinks, kitchen equipment, shelves, and bathroom products for welding and surface processing.
Used for body repair, bracket welding, rust removal, and metal part maintenance.
Suitable for small metal parts, tools, and structural components in hardware production and assembly.
Used for field work such as rust removal, weld repair, and cutting without fixed equipment.
Applied in battery trays, energy storage cabinets, and metal structures for welding, cutting, and cleaning tasks.
| Model | KPS-ALW1500 | KPS-ALW2000 | KPS-ALW3000 |
|---|---|---|---|
| Laser Power | 1500W | 2000W | 3000W |
| Fillet Weld Thickness (Stainless Steel) | 2.5mm | 5mm | 9mm |
| Fillet Weld Thickness (Angle Steel) | 3mm | 5.5mm | 10mm |
| Fillet Weld Thickness (Aluminum Alloy) | 2mm | 4.5mm | 8.5mm |
| Welding Wire Diameter | Φ0.8-1.6 | Φ0.8-2.0 | Φ0.8-2.0 |
| Wire feeding mode | Automatic wire feeding | Automatic wire feeding | Automatic wire feeding |
| (Single/double wire switching) | (Single/double wire switching) | (Single, double, or triple wire switching) | |
| Weld bead width | 1.5–4.5mm | 1.5–5.5 mm | 1.5–8.0 mm |
| Total power consumption | ≤2kW | ≤2.5 kW | ≤3 kW |
| Cooling method | Integrated water cooling | Integrated water cooling | Integrated water cooling |
| Chiller power | 4200W | 5200W | 7500 W |
| Power requirements | 380V | 380V | 380 V |
| Equipment dimensions | 1.3*1.05*1.15m | 1.3*1.05*1.15 m | 1.3 x 1.05 x 1.15 m |
| Equipment weight | ≈380kg | ≈400 kg | ≈410 kg |
| Type of self-generated gas | 99.99% argon-nitrogen gas | ||
| The handheld welding head comes standard with a 10-meter fiber-optic cable, allowing for flexible, convenient long-distance welding outdoors. | |||
The 4 in 1 laser welding machine combines welding, cutting, laser cleaning, and weld seam cleaning in one system, while traditional welding equipment is limited to single welding functions.
| Comparison | 4 in 1 Laser Welding Machine | Traditional Welding Equipment |
|---|---|---|
| Core Function | Welding, cutting, cleaning, and seam cleaning in one machine | Single welding function only (MIG, TIG, arc welding, etc.) |
| Working Principle | High-energy focused laser beam | Arc or resistance heat source |
| Welding Quality | Narrow weld, small heat-affected zone, low deformation, clean appearance | Larger heat-affected zone, more deformation, and spatter |
| Efficiency | Fast processing, reduced post-processing work | Slower process with more manual finishing |
| Material Range | Suitable for stainless steel, carbon steel, aluminum and other metals | Limited performance on some metal types |
| Operation | Simple handheld operation with mode switching | Requires skilled operators and experience |
| Environment | Lower smoke and less consumables | More smoke, spatter, and consumable use |
| Cost Structure | Higher initial cost, lower long-term processing cost | Lower initial cost, higher long-term labor and finishing cost |
The 4 in 1 laser welding machine represents an integrated and efficient metal processing solution, suitable for applications requiring precision, surface quality, and consistent results. Traditional welding equipment remains suitable for basic welding tasks with lower process requirements.
Proper maintenance helps keep the 4 in 1 laser welding machine running stable and extends its service life. Regular checks on key components reduce downtime and maintain processing quality.
Check and clean protective lenses and focusing lenses to avoid dust or spatter affecting the laser beam.
Keep welding, cutting, cleaning, and seam cleaning nozzles free from blockage or damage, and replace when worn.
Ensure stable water flow, proper coolant level, and clean filters to prevent overheating.
Remove dust and metal residue from the laser head and check cable connections regularly.
Clean the exterior and working area to prevent dust and metal particles from entering the system.
Check laser power, gas flow, and working settings to ensure stable performance during use.
For detailed maintenance steps, refer to the maintenance guide: What are the best practices for maintaining laser welding equipment
KEMPSON is a manufacturer and supplier of 4 in 1 laser welding machines, integrating welding, cutting, cleaning, and weld seam finishing in one system. The machines are used in sheet metal fabrication, automotive parts, kitchen equipment, and metal processing applications, offering stable performance and practical operation for industrial use.
KEMPSON is supported by a professional engineering team, patented designs, and certified production standards. All machines come with a 3-year warranty and technical support. For product details or project requirements, please contact us.
In addition to welding, cutting, and cleaning, the 4-in-1 model includes weld seam processing functions (such as post-weld cleaning/polishing), covering the entire process and reducing the need for additional equipment.
In medium-to-thin sheet metal processing (0.5–10 mm), handheld laser welding machines can replace most TIG and MIG welding processes, as well as some grinding operations, significantly improving efficiency and reducing reliance on manual labor.
It is suitable for both workshop production and on-site construction. Equipped with a 10-meter fiber optic cable, the 4-in-1 machine features a compact design and is easy to move. It offers both handheld and automated modes; the handheld design is ideal for maintenance, installation, and tasks at non-fixed workstations, while the automated mode is suitable for standardized batch production.
The main costs are for protective lenses and a small amount of auxiliary gas (some models do not require an external gas source). No chemical consumables are needed, and overall consumable costs are far lower than those of traditional welding.
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