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Desofin grain refiner is the chemical powder for metallurgy industry invented by Richard H. Haupt.
Mr. Haupt, born in America,engages in brass permanent molding industry in all his life till now.
He discovered several metallurgical chemical powders. Among them, I75L mold-release agent was invented in year 1976 while Desofin grain refiner was invented in year 1982.
These inventions converges his valuable practice and experience of more than 50 years in this industry.
The belowing table is what we suggested alloy class and dosage when adding Desofin.
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Sodium-Free Grain Refiner—Expected Results for Various Copper Alloys |
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Ingot Class |
Material Preparation |
Dosage |
Expected Results | ||
| Grain Refine-ment | Deoxy-dation | Reduce Casting Temp. | |||
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Low-lead copper |
At least 20% reclaimed casting materials |
60g/mt |
Yes |
Yes |
Yes |
|
Silicon Bronze |
20%-50% reclaimed casting materials and the balanced are new metal ingot |
70g/mt |
Yes |
Yes |
Yes
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Remarks:
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Potential savings:
1.Savings over the cost of purchasing fine grained ingot.
2.Reduction in finishing and rework costs.
3.Lower the casting Temperatures are possible depending on the size of the part to be cast and the type of mold to be used