TECHNOLOGY OF METAL BONDING

Collection of ways of making also secrets of technology for all occasions

Glossary of terms

A | B | In | | G | D | Ж-и | To | | L | M | N | About | N | Rs | T-y | Fc | Ш-я

Tinning of steel parts

Instead of flux during the tinning of steel parts (including stainless steel) before soldering, you can use a piece of polyvinylchloride tube. The soldering site is also degreased. A sting of a well-heated soldering iron with a drop of solder rubs a piece of this tube on the soldering room until a uniform layer of the half-length is obtained. Then they lead the ration, as if usually.

Soldering of galvanized steel with zinc or cadmium

Possible tin-lead solders soldering iron with zinc chloride as a flux . Soldering with rosin fluxes does not alienate the qualitative connection.

Soldering of nichrome

Soldering (nichrome with nichrome, nichrome with copper and its alloys, nichrome with steel) can be carried out by soldering POS-61, POS-50 (worse - POS-40) with the use of flux of the following composition (in grams): vaseline - 100, chloride Zinc in powder - 7, glycerin - 5. The flux is prepared in a porcelain mortar, in which Vaseline is put, and then added, mixing well until a homogeneous mass is obtained, successively zinc chloride is also glycerin.
The surfaces to be joined should be carefully sanded with a sanding cloth and wiped with cotton wool soaked in a 10% alcohol solution of cupric chloride, applied to the flux, then also soldered.

Miscellaneous

1. The rusted parts from ferrous metals before soldering should be lowered for 10-12 h into zinc chloride (see above), diluted with half distilled water.

2. Solder the ball bearing to the flange using solder PIC 61, also flux of the following composition: ethyl alcohol - 73 ml, rosin - 20 g, aniline hydrochloride - 5 g, triethanolamine - 2 g. Before soldering the parts should be degreased, after soldering - In the gasoline plus the bearing lubricate.

3. For the splicing of wires from alloys with high resistance (nichrome, constantan, manganine, etc.), one can use a simple method that does not require any special tools. Wires at the junction point are also twisted. Then, such a current is passed so that the joint site glows red. To this place, a piece of lapis is placed with tweezers, which, when heated, melts, resulting in a benign electrical contact.

4. Thin copper wires can be welded in the flame of an alcohol lamp or a match. For this, they are peeled to 20 mm, folded, carefully twisted, plus heated until until a ball of molten metal is formed, giving a reliable contact.

5. It is easier to rub aluminum if it is previously coated with copper. The necessary room is cleaned out, plus it is carefully applied to it with two or three drops of a saturated solution of copper sulfate. Next, the negative pole of the constant current spring is connected to the aluminum part, but a piece of copper wire is attached to the positive pole, the end of which is lowered into a drop of vitriol, so that the wire does not touch the aluminum in any way. After a certain time, a layer of red copper settles on the surface of the part, which later drying is also done by the usual method. As a source of current, you can use a battery from a flashlight.