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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

Inactive Publication Date: 2015-07-01
QINGDAO YUGUANG PRECISION CASTING FACTORY
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AI Technical Summary

Problems solved by technology

[0004] There are still some problems in the production of copper ingot casting. For example, the internal structure of the casting is coarse, and there are often casting defects such as shrinkage porosity and pores, which lead to the mechanical properties of the casting being not as high as that of the forging.

Method used

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Embodiment

[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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PUM

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Abstract

The invention relates to a copper ingot for gravity casting and a casting method thereof. A casting raw material of the copper ingot consists of two parts including a basic raw material and an additive, and is prepared by components; the casting raw material is heated and fused; a refining agent is added and evenly stirred to remove impurities; a refiner is added and evenly stirred to refine grains; a sample is taken to check the mobility of molten metal and the compositional ratio of all elements; if the result is not conform, the raw material or the refining agent are added again; the copper ingot is cast, and is naturally cooled; the performance of the copper ingot is inspected; and the grading is performed. The copper ingot for gravity casting has such advantages as good fluidity of the molten metal, few defects of cast products, high yield and good polishing performance, reduces the workload of workers, and improves the production efficiency.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a copper ingot for gravity casting and a casting method thereof. [0003] Background technique [0004] At present, there are still some problems in the production of copper ingot casting. For example, the internal structure of the casting is coarse, and there are often casting defects such as shrinkage porosity and pores, which lead to the mechanical properties of the castings being not as high as the forgings. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the purpose of the present invention is to provide a copper ingot for gravity casting and its casting method. High, good polishing performance and other advantages, reducing the workload of the staff and improving production efficiency. [0007] Copper ingot for gravity casting provided by the invention and ...

Claims

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Application Information

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IPC IPC(8): C22C1/06B22D7/00
Inventor 陈玉光
Owner QINGDAO YUGUANG PRECISION CASTING FACTORY
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