In the field of modern industrial welding, both laser welding technology and brazing technology are widely used. However, there are significant differences between the two in many aspects.

 

XinhelaserAble to achieve all the advantages of laser welding, has its own R&D team, focusing on various brass, copper, aluminum (3003aluminum,5052aluminum,6063aluminum,ADC12Xinhe laser welding has the advantages of high efficiency and self-Advantages include high automation level, high quality and no filler material and flux，Through continuous technological investment,Form a complete set of aluminum alloy production technology with independent intellectual property rights，haveImprove the production system,Helping enterprisesFurther improve welding efficiency and quality level.

 

Xinhe Laser Welding Workshop

 

1. Welding principle and process

Laser welding uses a high-energy-density laser beam as a heat source to locally heat the material to a molten state, thereby achieving material connection. The process is fast and precise, and the laser beam can be focused on a very small area to precisely control the welding position.

 

Brazing uses a metal material with a lower melting point than the base material as the brazing filler metal. The weldment and the brazing filler metal are heated to a temperature higher than the melting point of the brazing filler metal but lower than the melting point of the base material. The liquid brazing filler metal is used to wet the base material, fill the joint gap and diffuse with the base material to achieve connection.

 

2. Applicable scope of welding materials

Laser welding

(1)A variety of materials can be welded, including brass, copper, aluminum and other metal materials. For these materials, laser welding can achieve high-quality connections with strong and beautiful welds and a small heat-affected zone.

(2)It is especially suitable for occasions with high requirements on welding precision, such as electronic components, precision instruments and other fields.

 

Brazing

 （1）It can also be used for welding brass, copper, aluminum, etc., but it may not be able to achieve the accuracy and strength of laser welding in some high-demand application scenarios.

（2）For some workpieces with complex shapes, brazing has certain advantages and can better fill irregular gaps.

 

3. Welding quality

Laser welding

（1）The welding precision is extremely high, and micron-level welding can be achieved. The weld width is narrow, the heat-affected zone is small, and the damage to the parent material is small.

（2）The welding strength is high and the mechanical properties of the weld are excellent, which can meet the requirements of high strength and high reliability.

（3）No impurities such as welding slag will be generated during the welding process, the weld surface is smooth, and no excessive subsequent treatment is required.

 

 Brazing

（1）The welding quality is relatively stable, but the addition of brazing filler metal may affect the mechanical properties of the weld.

（2）The weld after brazing may have certain defects such as pores and slag inclusions, which require certain inspection and treatment.

 

4. Production efficiency

 Laser welding

（1）The welding speed is fast and can greatly improve production efficiency. Especially in automated production lines, laser welding can achieve high-speed and continuous welding.

（2）No preheating or post-heat treatment is required, saving time and energy.

 

Brazing

（1）Welding speeds are relatively slow, especially for large workpieces, which require long heating and cooling times.

（2）Preheating and post-heat treatment are usually required, which increases the production cycle.

 

Comparison chart of laser welding and brazing