2pcs Alumina copper welding needles for battery spot welding Sunkko 737G 787A 788H 709A 709Ad 797Dh machines 


Features:
1) Hardness>83HRB,
2) Conductivity>85%IACS,
3) Softening temperature 900?;
4) Dispersion hardened CuA12O3 composite material, which has the properties of high strength, high hardness, high conductivity and high softening temperature.
5) It is widely used in large-scale microwave tube structure and conductive materials, switch switches, silver contacts and spot welding electrodes. The production of the materials is through Cu-Al alloy internal oxidation-isostatic pressing-sintering-hot extrusion- Drawing-processing and forming process production. It has good thermal stability, good plasticity and processing properties.
6). The superior corrosion resistance of the galvanized steel sheet for resistance welding electrodes makes it widely used in more and more fields, but it also brings new issues to the resistance welding technology, how to avoid the zinc layer in the welding process The problem of yellowing of solder joints, false welding, and electrode sticking to zinc due to melting is becoming more and more urgent. Dispersed aluminum-copper alloy is undoubtedly the most ideal material, which is superior to welding coated steel plates, nickel plates, etc. The welding resistance and arc burn resistance can improve the life of the electrode, reduce the frequency of electrode dressing, and minimize the possibility of welding interruption and virtual welding. It is especially suitable for welding pure nickel strips and nickel infiltration in the production of mobile phone batteries. Steel sheet and so on.
7). Lead frame materials and electronic packaging materials. With the development and progress of the electronics industry, the requirements for lead materials of electronic components such as large-scale integrated circuits are getting higher and higher. The high temperature and rigidity of dispersion-strengthened copper alloys will gradually replace Traditional iron-nickel alloy material.


Application range: Suitable for spot welding between nickel strips, nickel-infiltrated steel sheets, coated steel strips and other materials in battery production. In the production of nickel-metal hydride batteries, nickel-cadmium batteries, polymer batteries, lithium batteries and other batteries, spot welding connecting pieces, batteries, and lead-out pieces.


Main welding advantages:
1. Avoid sticking electrodes.
2. The welding part is not yellow, and the welding spot is beautiful.
3. Avoid the phenomenon of virtual welding.
4. Put an end to welding sparks.
5. Excellent electrical conductivity and thermal conductivity.
6. Good high temperature performance.
7. Meet the requirements of SGS environmental protection standards and MSDS standards.


Specification:
Hardness>83HRB,
Conductivity>85%IACS,
Softening temperature 900?;


Package Include:
1 pair of solder pins