Manhart How to improve welding performance with handheld laser welding machine?

The method of improving the welding degree of handheld laser welding machine can be considered and optimized from many aspects. Here are some suggestions, organized into clear points:
1. Equipment selection and optimization
1. **Laser power selection**:
– Select a laser with appropriate power to ensure sufficient laser energy to meet the welding needs of different thicknesses and materials. For example, for thick plates or high carbon equivalent materials, the laser power needs to be appropriately increased to ensure good fusion.
– Generally speaking, higher power output can significantly speed up welding, but the appropriate power needs to be selected based on material properties and welding needs.
2. **Optical system**:
– Equipped with an advanced optical system that can effectively ensure beam quality, thereby improving welding accuracy and efficiency.
2. Material preparation and processing
1. **Main material quality**:
– Select base materials whose chemical composition and mechanical properties meet the requirements to ensure good quality.
– For materials with high carbon equivalent or high alloying element content, appropriate pretreatment should be carried out to improve weldability.
2. **Surface Cleaning**:
– Carefully clean the material surface to completely remove oil, oxides and other impurities, providing a strong guarantee for high-quality welding.
3. Precise control of welding parameters
1. **Laser power adjustment**:
– Select the appropriate laser power based on factors such as base metal thickness and joint form.
2. **Welding speed control**:
– Select the appropriate welding speed according to the type and thickness of the base material. For thin sheets or highly thermally conductive materials, the welding speed needs to be reduced to prevent joint deformation due to excessive heat input.
3. **Focus position adjustment**:
– Adjust the focus position according to the thickness of the base metal and the shape of the joint. Generally speaking, for thin plates or lap joints, the focus should be above the surface of the workpiece; for thick plates or corner joints, the focus should be appropriately deep inside the workpiece.
4. Use high-quality protective gas
– Use shielding gas with high purity and stable flow to protect the molten pool from contamination and improve welding quality.
5. Training and skill improvement
– Train operators to master the operating techniques and precautions of handheld laser welding machines. The operator’s techniques and skills have an important impact on welding quality.
6. Other factors
1. **Defocus amount**:
– The combination of defocus amount and laser power affects the welding effect and speed, and needs to be adjusted according to the actual situation.
2. **Welding requirements**:
– Reasonably adjust the welding parameters according to the user’s welding requirements, including welding depth, welding density and welding width.
3. **Equipment Maintenance**:
– Perform regular maintenance and upkeep on equipment to ensure it is in good working order.
4. **Process Optimization**:
– Continuously optimize the welding process to improve the stability and efficiency of production.
By comprehensively considering the above factors, combined with specific welding requirements and material characteristics, the welding degree of the handheld laser welding machine can be effectively improved and the welding quality ensured.