Wire is galvanized wire, in the black part of the top of the two parallel wire without leather (diameter 0.5mm), iron wire in the middle of a metal wire (not visible on the map than the hair is thinner, I do not know what the silk). I use electric iron. Solder. Solder paste but how can not be welded, make the galvanized layer on the wire will be burned iron, not black, is there a high efficiency can be mass-produced?
Soldering copper with solder paste or rosin can be done. Galvanized iron wire shall be made of zinc acetate solution as soldering flux,Method of preparing hydrochloric acid solution of zinc is lost a few pieces of galvanized iron down in dilute hydrochloric acid solution, for zinc in hydrochloric acid solution foaming foaming explanation.
What's the purpose of galvanizing your wire? Oxidation resistance? If you can choose the coating, you can use tin instead of zinc plating, so that you can easily solder it with soldering process! In this way, the efficiency of mass production will be greatly improved. Of course, if you can only solder it after galvanizing, I suggest sanding it with the sand to be soldered and then solder. This will make it easier to solder. But the efficiency is very low!
Before welding with 10% hydrochloric acid coated galvanized layer, wait a few seconds, not directly with the solder paste, you can, don't outside the wise remark of an experienced person, ah! (huochu to 10 points)High efficiency equipment can be used in large quantities can be manufactured, the basic principle is that using the fixture with a line (or row), move to the upper part of the tank after hydrochloric acid decreased, sticky about hydrochloric acid, lift, move to the welding position of Pu solder wire, clamp, automatic heating for several seconds, loosen the clamp and remove. You can make a device like this.