Name of product

Grain refining additive of cooper alloys

Brand

Desofin

Form of product

50g/capsule, can be put into the cooper melt together with thesealing aluminum capsule packing while being used.

Consumption

 one 50 grams capsule for each 250 kg of melted brass

Alloy requirements

???Best casting results will occur with clean yellow brassingot.  
???The basic brass must be free of inclusions which are identifiedby a visual check of the polished surface.  
???Good grain refinement usually occurs when the copper contents isbetween 57 and 63 percent. 
???Optimal grain refinement usually occurs when the copper contentis 59.5 percent the aluminum content is 0.6 percent.
???Can be used to lower the casting temperatures and increase thecastability  
and fluidity of the aluminum bronze, red brass and tin bronze.

Method of use

???Products shall be free of any moisture.
???Any adjustments to the aluminum or zinc content of the meltshould be made prior to adding Desofin. 
???The surface of the melt should be reasonably free of slag.
???Desofin should be added to the melt by immersing the capsules atleast 100 cm. below the liquid metal surface using a bell shapedplunger and the furnace should be in low tap.
???Stir the melt uniformly after putting Desofin into it.

Expected benefits

???Improved Fluidity of the metal to be cast.
???Lower the casting Temperatures are possible depending on thesize of the part to be cast and the type of mold to be used.Generally between 940 and 980 degrees C for beryllium coppermolds.
???Lower temperatures are possible if the iron steel molds areused.
???Cracking Tendencies of the parts to be cast are greatly reducedand most often, cracks are eliminated.
???The occurrence of the sinks is greatly reduced.
???Lead is more uniformly distributed in the fine grainstructure.

Potential savings

???Savings over the cost of purchasing fine grained ingot.
???Reduction of casting scrap.
???Reduction in finishing and rework costs.
???Energy savings resulting from lower casting temperatures.
???It is not necessary to refine foundry scrap, i.e. gates, risersand turnings already grain refined.