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Soldering fluids
Hydrochloric acid is completely neutralized with zinc, so zinc chloride is obtained. Colophonium or ammonium chloride are also used. A solution of 15% zinc chloride, 25% glycerin and 60% water is also very suitable for soldering brass, copper and tin.Silver is soldered with an alloy of 20 to 70% silver, 50 to 18% copper and the rest zinc. The fluxing agent is borax or mixtures thereof with boric acid.
Soldering grease and fluid
| - Liquid: | |||
| Salmiac (ammonium chlor.) | 100 | dl | |
| Vaseline oil | 900 | dl | |
- Ointment-like: |
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| Salmiac | 25 | dl | |
| Vaseline | 100 | dl | |
| Tallow | 2 | dl | |
| Rosin | 2 | dl | |
| Salmiac | 1 | dl | |
| Japan wax | 35 | dl | |
| Paraffin | 250 | dl | |
| Vaseline | 3250 | dl | |
| Salmiac | 250 | dl | |
| Zinc chloride | 1250 | dl | |
| - For electr. connections: | |||
| Finely powdered rosin | 100 | dl | |
| Strong ammonia | |||
| (salmoniac spirit) | 15 | dl | |
Take as much of the strong ammonia as necessary to grind the resin powder into a stiff paste. |
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- Soldering fluids: |
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| Phosphoric acid | 4 | dl | |
| Spirit | 5 | dl | |
| Lactic acid | 100 | dl | |
| Glycerin | 100 | dl | |
| Water | 800 | dl | |
| Zinc chloride | 8 | dl | |
| Spirit | 60 | dl | |
Glass solder
| Tin | 90 | dl | |
| Aluminum | 10 | dl | |
| or: | |||
| Tin | 95 | dl | |
| Zinc | 5 | dl | |
| or: | |||
| Tin | 95 | dl | |
| Copper | 5 | dl | |
These alloys adhere well to hot glass. The glass is made very hot and the solder is rubbed on the heated parts. The solder can be evenly distributed with a roll of paper or aluminum. The parts to be welded are then pressed together and allowed to cool. |
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