2.？ Connect the welded parts of the wires with each other in the following way, and contact the welded parts with thermoelectric ferrochromium. When the wire is heated to a certain degree, the solder wire is melted to the welding part of the wire, so that the solder melts and flows, and all gaps are filled. After a short pause, the ferrochrome can be taken out, and the welding parts can be moved after cooling and condensation. ?
3. Welding method?
(1) The diameter of the two wires is in the range of 0.2 ~ 0.8 mm or 0.6 ~ 1.45 mm, and the two wires are twisted for 6 ~ 10 turn. Welding is shown in figure 1.
(2) The wire with the wire diameter below 0.3mm is welded with the wire with the wire diameter above 1mm, and the thin wire is wound around the wire with the wire diameter above 1mm for 6 ~ 10 turns. Welding is shown in Figure 2:
(3) Bare copper cables shall be welded with wires with wire diameters above 1mm, as shown in Figure 2 above. ?
(4) Bare copper wire with wire diameter of 0.8 ~ 1.5 mm, overlapping wires of 10 ~ 15 mm and wire diameter of 0.3 or so is tightly wound for 6 ~ 10 turns. If the number of wires to be welded is less than 5, this method can also be adopted, and the bare copper wire can be properly thickened or wound several times, or wrapped with copper. Welding as shown in Figure 3?
(5) The wire diameter of the welding wire is above 1mm, and the wire diameters of the two welding wires to be welded are the same, which requires a higher welding appearance and less movement. The method in fig. 4 can be adopted.
(6) When the wire diameter is below 1mm, wrap the wire around the hard wire for 3 ~ 5 times, as shown in Figure 5a; If the wire diameter is greater than 1mm, punch a hole in the hard lead-out wire, put the wire through the hole and put it into a tin can for tin boring. As shown in figs. 5b and 5c. ?
(7) ? The flexible lead-out wire or flexible cable is welded with the thin conductor, which is wound on the flexible conductor or twisted for 4 ~ 6 turns according to the method of Figure 1.
(8) The conductor is welded with thin copper skin. First, polish the copper skin at the welding position, then apply the flux to tin plating, and then weld the conductor, so that the temperature is not easy to be too high.
4. Welding requirements?
(1) The welding must be firm and the welding surface must be filled with solder. (2) There should be no sharp corners and burrs after welding to make the welding surface smooth.