Laser Welding Machine Manufacturers in China

What is a laser welding machine?

The laser welding machine is a welding device that uses a high-energy density laser beam as a heat source. It generates laser light through a laser generator and focuses the laser beam on the part that needs to be welded through the focus and transmission of the optical system. When the laser beam irradiates the surface of the workpiece, the material quickly absorbs the laser energy, reaches the melting point or even vaporizes, thereby achieving the connection of the material.

How does a laser welding machine work?

Laser welding uses high-energy laser pulses to heat a small area of the material locally. The energy of the laser radiation diffuses rapidly into the material’s interior through heat conduction, melting the material to form a specific molten pool for welding and repair.

Advantages of laser welding machine

1. High efficiency: The laser welding machine uses a high-energy-density laser beam as a heat source, which can achieve fast and precise welding. Laser welding is quicker and more efficient than traditional welding methods, which can significantly improve enterprises’ production capacity.

2. High quality: During laser welding, the heat-affected zone is small, the welding deformation is small, the weld is beautiful, and the quality is stable. This makes laser welding the preferred method for many products with high precision and high-quality requirements.

3. High flexibility: The laser welding machine is suitable for welding various metal materials, such as stainless steel, carbon steel, mould steel, copper, aluminium, gold, silver, and others. By adjusting parameters such as laser power and welding speed, welding of different thicknesses and materials can be achieved, which is highly flexible.

4. Energy saving and environmental protection: Laser welding generates less smoke, exhaust gas, and other pollutants, which reduces pollution. At the same time, its relatively low energy consumption helps enterprises achieve the goals of energy saving and emission reduction.

5. Easy to automate: The laser welding machine can be combined with automation equipment such as robots to produce highly automated welding. This can not only improve production efficiency but also reduce dependence on manual labour and improve the stability and reliability of the production line.

6. Strong welding adaptability: Laser welding can accommodate the needs of various complex shapes and structures. It can weld points, lines, circles, tubes, and special-shaped materials, including thin plates, thick plates, pipes, corner welds, and other welding forms.

7. Cost-effectiveness: Although laser welding machines require a high initial investment, their high efficiency, high quality, and long life make them cost-effective in long-term use. In addition, with the advancement of technology and market expansion, the price of laser welding machines is gradually decreasing.

What are the uses of laser welding machines?

1. Welding

The primary use of laser welding machines is undoubtedly welding. It can weld thin-walled metal materials such as stainless steel plates, aluminium plates, and galvanized plates and be used for sheet metal welding, such as kitchen utensils. It is suitable for welding planes, straight lines, arcs and shapes. It is widely used in precision machinery, jewellery, electronic components, batteries, watches, communications, handicrafts and other industries. It can complete welding well in various complex environments, has high production efficiency, and has more obvious advantages than traditional argon arc welding, electric welding, and other processes.

2. Repair

The use of laser welding machines is not limited to welding. It can also repair the wear, defects, scratches of moulds, and defects such as sand holes, cracks, and deformation of metal workpieces. The mould will wear out after a long time of use. If it is directly discarded, the loss will be significant. The mould with problems can be fully utilized again through repair by a laser welding machine, mainly when repairing delicate surfaces, avoiding the two processes of thermal strain and post-weld treatment, significantly saving production time and production costs.

3. Cutting

Laser cutting is a new cutting method. Laser welding machines can cut stainless steel, copper, aluminium, zirconium, and alloys. It is another important application of laser welding machines in material processing.

4. Cleaning

With the continuous reform and upgrading of laser welding machines, their functions are increasing. They can not only weld and cut but also clean and remove rust. Laser welding machines use the beam emitted by the laser to remove the contamination layer on the surface of the workpiece being processed. Using a laser welding machine for cleaning has the characteristics of non-contact, does not require cleaning fluid, and can replace professional cleaning equipment.

How thick a material can a laser welding machine weld?

What are the common problems and solutions for laser welding machines?

1. The laser welding machine does not have enough penetration depth. To increase the energy, increase the pulse width and current or reduce the welding speed.

2. Cracks appear during laser welding. The workpiece cools quickly after welding. You can increase the water temperature.

3. Porosity appears during laser welding. The laser welding machine cools quickly, and the pores produced are generally smaller than those produced during traditional fusion welding. You can clean the workpiece surface before welding.

4. The weld is black during laser welding. You can turn on the shielding gas or change the direction of the shielding gas flow.

Laser welding machine user guide

Preparation before starting

• Check whether the laser welder’s power supply and water circulation are regular.

• Check whether the gas connection of the machine’s internal equipment is standard.

• Check whether there is dust, spots and oil on the machine’s surface.

Start/shutdown

Startup steps:

• Turn on the power and turn on the main power switch.

• Turn on the water cooler and generator.

• Open the argon valve and adjust the gas flow.

• Enter the working parameters to be executed.

• Perform welding machine operation.

Shutdown steps:

• Exit the program and turn off the generator.

• Turn off the dust collector, water cooler and other equipment.

• Close the argon cylinder valve.

• Turn off the main power switch.

Safety operating procedures

• During operation, if an emergency (laser leaks water, makes abnormal sounds), press the emergency stop button immediately and cut off the power quickly.

• The external water circulation switch of the welder must be turned on before operation.

• Since the welding system is water-cooled and the power supply is air-cooled, starting the machine when the cooling system fails is strictly forbidden.

• Do not disassemble any parts inside the machine at will, and do not weld with the machine safety door open.

• When the welder is working, it is strictly forbidden to look directly at the laser or reflect the laser with your eyes, and it is strictly forbidden to look directly at the welding gun to avoid eye damage.

• Do not place flammable and explosive items in the optical path or where the beam can be irradiated to avoid fire and explosion.

• When the machine works, the circuit is in a high-voltage, high-current solid state. It is strictly forbidden to touch the internal circuit components of the machine during operation.

• Untrained personnel are prohibited from operating this machine.

Guide to Buying a Laser Welding Machine

When buying a laser welding machine, there are several factors to consider. First, the power and speed of the machine should be regarded as higher power outputs allow for faster and more efficient welding. Second, consider the size and type of material to be welded, and make sure the machine has enough welding capacity to handle the thickness and material of the parts. Accuracy is also essential, as some welding tasks require high precision. Ease of use is another critical factor, as the machine should be simple to set up and operate. Maintenance requirements and costs should also be considered, as machines with low maintenance requirements are more cost-effective in the long run. Price is crucial in the purchasing decision, so it is necessary to set a budget and choose a machine that fits the budget; consider the warranty and customer support provided by the manufacturer to ensure that you can get help if you encounter any problems with the machine. With these factors in mind, you can find a high-quality laser welder that meets your needs and budget. Welcome to consult and order online to establish a long-term partnership!