What is laser welding and conventional welding?

Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Laser welding is mainly used for welding thin-walled materials and precision parts, and can achieve spot welding, butt welding, lap welding, sealing welding, etc.

1. High flexibility: Traditional welding is suitable for small batch production and sample production, and can be quickly adjusted and modified as needed.

2. Relatively low technical requirements: Compared with advanced welding processes, traditional welding has lower technical requirements for operators, and non-professionals can also perform simple welding work.

3. Low cost: Traditional welding does not require high-cost automated equipment, only simple tools are required for operation, and the cost is relatively low.

Disadvantages: It requires highly skilled operators to perform welding, and is affected by human factors, making it difficult to maintain high-quality welding results.

The main features of laser welding include:

1. The heat-affected zone of laser welding is small, the energy density of the laser beam is high, the heating time is short, and the heat loss is small, so the heat-affected zone of the material is small, which can reduce the deformation, cracking, oxidation and other problems of the material.

2. The depth-to-width ratio of the weld of laser welding is high, the diameter of the laser beam is small, and the energy is concentrated, so a deep and narrow weld can be formed, which improves the strength and sealing of the welding.

3. The weld of laser welding is smooth and beautiful, the spot of the laser beam is stable, and the welding position and parameters can be accurately controlled, so a smooth and beautiful weld can be formed, reducing the subsequent grinding and polishing.

4. There are fewer welding defects in laser welding. Laser welding does not require the use of auxiliary materials such as electrodes, welding rods, and shielding gases, so it can avoid the generation of welding defects such as electrode contamination, pores, slag inclusions, and cracks.

5. The welding speed of laser welding is fast. Because the energy density of the laser beam is high and the heating time is short, the welding process can be completed quickly, which improves production efficiency.

6. Laser welding has high welding flexibility, because the laser beam is a non-contact heat source, which can be transmitted and controlled by optical fiber, reflector, robot, etc., so it can adapt to various complex welding positions and shapes, and improve production flexibility.

7. Laser welding has a high degree of welding automation, because laser welding can be precisely controlled and adjusted by computer or CNC system, so it can achieve a high degree of automation and intelligence, reducing manual intervention and errors.

8. Laser welding has strong material adaptability, because the heat source of laser welding is a non-contact heat source, which can weld various metals or non-metallic materials, and even different types of materials to achieve the connection of dissimilar materials.

9. Laser welding has a wide range of applications, because the heat source of laser welding is an efficient heat source, which can achieve high-quality, high-speed, and highly automated welding, so it can be applied to various high-end industries, such as aerospace, automobile, electronics, medical, etc.

Disadvantages: high equipment cost, high energy consumption, and high maintenance cost.

Because laser welding requires the use of high-performance lasers, optical systems, control systems and other equipment, its equipment cost is much higher than that of traditional welding.

Jinan Gold Mark CNC Machinery Co., Ltd. is a high-tech industry enterprise specialized in researching, manufacturing and selling the machines as follows: Laser Engraver, Fiber Laser Marking Machine, CNC Router. The products have been widely used in advertisement board, crafts and molding, architecture, seal, label, woodcutting and engraving, stonework decoration, leather cutting, garment industries, and so on. On the base of absorbing the international advanced technology, we provide the clients the most advanced production and perfect after-sale service. In recently years, our products have been sold not only in China, but also as far as Southeast Asia, Middle east, Europe, South America and other overseas Markets.