SU407688A1 - SOLDER MIXTURE FOR SUSTAINING STEELS - Google Patents

Description

one

This invention relates to soldering, in particular, to the composition of a solid mixture.

Known for flax mixture containing copper oxide.

To improve the quality of the solder compound without preliminary treatment of the paved surface, ammonium chloride is added to the molten mixture. In this case, the components are taken in the following ratio, weight. including:

Copper oxide 1 Ammonium chloride 1,5

Copper oxide (CuO) is mixed with ammonium chloride (NH4C1) in a weight ratio of 1 weight. h. (CuO) and 1.5 wt. h. (lp4s1).

The resulting reaction mixture is heated in air in a ceramic crucible to melt. The surfaces of the parts to be soldered are dipped separately into the melt and connected to each other before they cool. Then the parts are installed in the oven, heated to 1100-1150 ° C and kept for 5-10 minutes.

In order to avoid the oxidation of copper, the soldering of steam compounds takes place in a protective or inert atmosphere.

Example 1. Reactionary 1 mixture consisting of 1 wt. h. Cuo and 1.5 wt. h. NH4C1 heated

in a ceramic crucible until melted. The parts to be soldered are then dipped separately into the melt, then they are connected to each other before cooling, and then put into the furnace. The latter is heated to 1100-1150 ° C and pulled out: it is 5-10 minutes. Cooling is carried out in an inert atmosphere.

PRI mme R 2. The first part of the process is carried out as in Example 1. The soldering process is carried out in a reactor connected to the atmosphere with a Bunzen valve, and cooling is carried out with the inside of the reactor disconnected from the atmosphere.

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Subject invention

A mixture of soldered steels containing copper oxide, characterized in that, in order to improve the quality of the joint without pre-treatment of the surface, the ammonium chloride is added to its composition, and the components are taken as follows. , weight. h. 25 Copper oxide 1

Ammonium Chloride 1.5