brass alloys

bronze (leaded red brass, nickel silver)
copper (Cu < 90%)

There are high demands on the metallurgy of the copper alloys. Thus, disturbing influences of hydrogen and oxygen have to be removed to minimize the formation of pores and oxidic inclusions. Elements like sulfur or aluminium have, depending on their alloy, a highly negative influence and should be removed.

On the top of that it is an important economic factor to design the dross metal-minimized, to have more metal available for the casting and to protect furnace walls and crucibles from adherences.

The covering of the melt in the melting furnace and in the launder system as well as on the surface in vertical continuous casting processes is very important and influences the casting quality essentially.

Particularly in the continuous casting the coatings of dies are very important as an effective protection has to be ensured throughout the casting process. Furthermore, the coating and grain refinement also play an important role in die casting.

Cleaning of hydrogen and oxidic contaminations.

Covering for the production of a reduced surface and protection from oxidation.

Grain refinement on a boron-base for higher stability- and stretching-values in the casting.

Coatings for the separation of the metal from the die during the whole vertical casting process.