Annealing And Hardening

annealing

Annealing salts are usually used as part of a 2-salt system in combination with an additive, otherwise decarburization and oxidation will take place with increasing treatment temperature. We are offering two different classes of additives.

The cyanide-free products bind successfully oxygen containing compounds and ensure the inert character of the liquid. They can be used up to a temperature of 1100 °C.

The second class of additives gives the melt a certain carbon activity which depends on whose concentration and the nature of the base salt. However, due to the short treatment times the carbon activity is allowed to vary considerably from the carbon content of the steel and has not to adjusted within closer limits.

annealing2annealing

 

Base Salt

Product

Application

Working
temp. in °C

GS 230

For quenching and tempering above 300°C

270 – 600

GS 430

For tempering, heating and quenching of steel for which AS bathes are not suitable.

500 – 700

GS 520

Replenisher salt for GS 430 baths.

 

GS 540

For heating and annealing.

600 – 950

GS 560

For annealing silver, gold and brass.

600 – 850

GS 660

Nontoxic salt for annealing steel and non-ferrous metals.

750 – 900

GS 670
----------------
GS 750

For heating and annealing.

750 – 1000
------------
850 – 1100

GS 960

For heating and annealing.

1050 – 1250

 

Additive salts for inert annealing; cyanide-free

Product

Application

R 2

For the prevention of decarburization and oxidation in combination with
GS 430, GS 540, GS 670, GS 750

R 3

Nontoxic additive for the prevention of decarburization and oxidation in combination with GS 660.

 

Additive salts for preventing decarburation

Product

Application

 
C 1 For the prevention of decarburization and oxidation in combination with GS 540, GS 560, GS 660, GS 670, if the carbon content of C 3 is undesirable.

 

C 3 For the prevention of decarburization and oxidation in combination with GS 540, GS 560, GS 660, GS 670. Contains active carbon to form a bath cover.  

 

For the prevention of decarburization and oxidation in combination with GS540, GS 560, GS660, GS 670, if the carbon content of C3 is undesirable.
C3:         For the prevention of decarburization and oxidation in combination with GS540, GS 560, GS660, GS 670. Contains active carbon to form a bath cover.