How to realize invisible weld and change the operation of welding method
Release time:
2022-11-20
【Summary Description】 1. The non-magnetic metal ring is required to use non-magnetic A- body stainless steel, because other metals leave the magnetic field (the magnetic field is removed); There will be remanence. However, the remanence of stainless steel after leaving the magnetic field (removing the magnetic field) is almost zero. 2. The metal ring requiring magnetic permeability should use pure iron or iron cobalt alloy with good magnetic permeability. The cobalt content is 27% ~ 50%, which has a high saturation magnetization. Low resistivity. Suitable for manufacturing pole shoes, motor rotors and stators, small transformer cores, etc. 3. In order to ensure the dimensional accuracy and welding strength of the components, the original design of the fillet weld to plug weld; 4. In order to ensure welding quality and control welding deformation, the original welding method is changed to vacuum brazing method, 5. In order to make the weld beautiful and improve the strength of the weld, the original obvious weld design is changed to invisible weld, 6. Solder Solder is a silver-free solder paste composed of copper, tin, nickel and phosphorus. 7. The particle size of silver-free solder paste is 200um, 8. Melting point of silver-free solder paste: 580 ℃ ~ 620 ℃, 9. During trial welding, increase the vacuum degree from × 10-3 Torr to × 10-4 Torr, 10. Welding temperature: 670 ℃ ~ 720 ℃, 11. According to the design requirements of the above technology, the expected purpose of the design is achieved through welding experiments; 12. Post-weld inspection: all technical indicators have achieved the expected results.
1. The non-magnetic metal ring is required to use non-magnetic A- body stainless steel, because other metals leave the magnetic field (the magnetic field is removed); There will be remanence. However, the remanence of stainless steel after leaving the magnetic field (removing the magnetic field) is almost zero.
2. The metal ring requiring magnetic permeability should use pure iron or iron cobalt alloy with good magnetic permeability. The cobalt content is 27% ~ 50%, which has a high saturation magnetization. Low resistivity. Suitable for manufacturing pole shoes, motor rotors and stators, small transformer cores, etc.
3. In order to ensure the dimensional accuracy and welding strength of the components, the original design of the fillet weld to plug weld;
4. In order to ensure welding quality and control welding deformation, the original welding method is changed to vacuum brazing method,
5. In order to make the weld beautiful and improve the strength of the weld, the original obvious weld design is changed to invisible weld,
6. Solder Solder is a silver-free solder paste composed of copper, tin, nickel and phosphorus.
7. The particle size of silver-free solder paste is 200um,
8. Melting point of silver-free solder paste: 580 ℃ ~ 620 ℃,
9. During trial welding, increase the vacuum degree from × 10-3 Torr to × 10-4 Torr,
10. Welding temperature: 670 ℃ ~ 720 ℃,
11. According to the design requirements of the above technology, the expected purpose of the design is achieved through welding experiments;
12. Post-weld inspection: all technical indicators have achieved the expected results.
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