Copper ingot for gravity casting and casting method thereof
A technology of gravity casting and copper ingots, which is applied in the field of casting, can solve the problems of poor mechanical properties, shrinkage, porosity, and coarse structure of castings, and achieve the effects of high yield, reduced labor, and improved production efficiency
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[0015] (1) Casting raw materials include basic raw materials and additives, wherein the composition of the basic raw materials is as follows: copper is 61wt%, lead is 1.7wt%, aluminum is 0.5wt%, and the balance is zinc;
[0016] (2) The additive includes a refining agent and a refining agent, the refining agent is a rare earth refining agent, and the addition of the rare earth refining agent is 4% of the total weight of the basic raw material;
[0017] (3) The composition of the refiner is: 80wt% copper, 10wt% aluminum, and boron as the balance, and the added amount of the refiner is 1.0% of the total weight of the basic raw materials.
[0018] Copper ingot for gravity casting and its casting method, the invented copper ingot for gravity casting has the advantages of good fluidity of molten metal, less defects of casting products, high yield rate, good polishing performance, etc., which reduces the workload of the staff and improves the Productivity.
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