The main components of aluminum solder paste are:
The main components of aluminum paste include alloy welding powder and paste flux. These components give the aluminum solder paste a certain viscosity and good thixotropy, suitable for surface mounting and circuit components and other applications. Alloy welding powder is the main component of solder paste, usually accounting for about 85% -- 90% of the weight of solder paste. Although the specific composition of aluminum solder paste may vary from product to product, in general, aluminum solder paste will contain aluminum and other alloying elements, such as silicon, to adapt to specific welding requirements and ensure welding quality.
The main function of aluminum paste is to promote the welding process of aluminum and its alloys. 12
Aluminum solder paste is a special solder paste, which is specially used for the welding of aluminum and its alloys. Its main components include aluminum powder solder and flux, which play a key role in the welding process. The role of aluminum solder paste is mainly reflected in the following aspects:
Promote welding: Aluminum solder paste, through its specific composition and formulation, can provide the necessary fluidity and permeability in the welding process, so that the aluminum powder solder can better fill the welding joints, so as to achieve the effective connection of aluminum and its alloys.
Prevent corrosion: THE brazing agent in the aluminum paste not only contributes to the welding process, but also prevents the corrosion of the workpiece caused by the welding slag after welding. This is essential to maintain the long-term stability and corrosion resistance of the welded joint.
Improved welding quality: By removing oxides from the base metal surface, aluminum solder paste helps reduce obstacles during welding and improves the quality and reliability of welded joints. At the same time, it can also reduce the surface tension of the material, further improve the wettability and the strength of the welded joint.
In conclusion, aluminum solder paste plays an indispensable role in the welding process of aluminum and its alloys through its specific composition and action mechanism, including promoting welding, preventing corrosion and improving welding quality.
The use of aluminum welding agent mainly includes the following steps:
Preparation before welding: first need to clean the surface of the weldment, remove oil and oxide film. Alkaline solutions such as 3%-5% Na2CO3 and 2%-4% aqueous solution of 601 detergent can be used for cleaning, and then rinsed with clean water. After cleaning the weldment should be used within 6 to 8 hours, avoid hand touch or contamination. Apply flux: After drying the water on the surface of the cleaned weldment, apply aluminum flux. The application should be uniform to ensure that the coverage area of the flux is sufficient to facilitate the welding process.
Welding operation: Welding operation can be carried out after applying flux. During welding, the welding temperature and time should be controlled to avoid the failure of flux or the deformation of welding parts caused by excessive temperature.
Post-welding treatment: After the welding is completed, the residual flux on the weldment should be cleaned up. It can be gently wiped with a wet wipe or other appropriate cleaning agent to ensure that there is no residue affecting the subsequent use of the weldment.
Storage and SAFETY: When not in use, aluminum flux should be sealed and stored in a cool and ventilated place. Pay attention to safety when using, avoid inhalation or contact with skin, especially in the welding process should take appropriate personal protection measures.
Through the above steps, aluminum welding can be effectively used for aluminum and aluminum alloy welding work.