GOST 19250-73
GOST 19250−73 soldering Fluxes. Classification
GOST 19250−73
Group В00
STATE STANDARD OF THE USSR
SOLDERING FLUXES
Classification
Brazing fluxes. Classification
Date of introduction 1975−01−01
APPROVED AND promulgated by the decree of the State Committee of standards of Ministerial Council of the USSR of December 4, 1973 N 2642
Proven in 1979, the Term of validity extended until 01.01.1990*
______________________
* Expiration removed by the resolution of Gosstandart of the USSR No. 2164 from
REPRINTING. January 1980
1. This standard applies to fluxes used in brazing, and establishes their classification according to the following criteria:
the temperature interval activity;
the nature of the solvent:
the nature of the activator determines the action;
mechanism of action;
the state of aggregation.
2. Depending on the temperature interval activity soldering fluxes are divided into:
low-temperature (450 °C);
high temperature (> 450 °C).
3. The nature of the solvent soldering fluxes are divided into:
water;
non-aqueous.
4. The nature of the activator determines the action of low-temperature soldering fluxes are divided into:
rosin;
acid;
halogenide;
hydrazine;
perborate;
aniline;
stearic.
5. The nature of the activator determines the action of high temperature soldering fluxes are divided into:
halogenide;
perborate;
the boride-carbon dioxide.
5.1. In the name of the flux containing several activators, must be called by all activators. For example, rosin-halogenides, perborate-galogennye flux.
6. Mechanism of action of soldering fluxes are divided into:
protective;
chemical action;
electrochemical action;
jet.
7. On the state of aggregation soldering fluxes are divided into:
solid;
liquid;
pasty.
The text of the document is verified by:
the official publication of the
M.: Publishing house of standards, 1980
