Lowmelting intermadiate alloy of copper and phosphor base and preparation method

An intermediate alloy, low melting point technology, applied in the field of metal materials, can solve the problems of polluted environment, difficult melting, and high melting point of alloys

Inactive Publication Date: 2004-10-27
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many disadvantages in these methods: red phosphorus has a low ignition point (240°C), is unsafe to transport, and reacts violently when it deteriorates, producing a large amount of toxic P 2 o 5 Gas, which seriously pollutes the environment; the effect of phosphorus salt is unstable, and there are also environmental pollution problems during use; the copper-phosphorus master alloy has a high melting point, and it is difficult to melt after being added to aluminum alloy, easy to segregate, and the effect is unstable
The aluminum-copper-phosphorus master alloy prepared by the method of the invention solves the pollution problem better when the aluminum-silicon alloy is modified, but the phosphorus content is low, which is 0.5-5%. bigger

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Firstly, take raw materials according to the mass ratio of 80.00% of electrolytic pure copper, 11.00% of red phosphorus, 5.00% of crystalline silicon, 2.00% of electrolytic nickel, 2.00% of pure antimony, 0.60% of pure bismuth, and 0.40% of pure manganese;

[0015] (2) Crush the crystalline silicon into particles with a diameter of less than 1 mm, mix it with red phosphorus powder evenly, and then wrap it with copper foil;

[0016] (3) Melt industrial pure copper and raise the temperature to 1250°C. First, press the mixed powder of crystalline silicon and red phosphorus into the copper melt until the reaction is complete, and then add the weighed electrolytic nickel, Pure antimony and pure manganese raw materials, stir rapidly until the reaction is complete;

[0017] (4) Directly cast into ingots or make fine granules with atomization equipment.

[0018] Obtain a kind of copper-phosphorus-based master alloy of optimum composition according to above-mentioned propor...

Embodiment 2

[0020] (1) Firstly take the raw materials according to the mass ratio of electrolytic pure copper 79.00%, red phosphorus 10.00%, crystalline silicon 4.00%, pure antimony 4.00%, electrolytic nickel 3.00%, pure bismuth 0.98%, silver 0.02%;

[0021] (2) Crush the crystalline silicon into particles with a diameter of less than 1 mm, mix it with red phosphorus powder evenly, and then wrap it with copper foil;

[0022] (3) Melt industrial pure copper and raise the temperature to 1250°C. First, press the mixed powder of crystalline silicon and red phosphorus into the copper melt until the reaction is complete, and then add the weighed electrolytic nickel, Pure antimony, pure bismuth and silver raw materials, stir rapidly until the reaction is complete;

[0023] (4) Directly cast into ingots or make fine granules with atomization equipment.

[0024] A copper-phosphorus-based master alloy with optimal composition is obtained according to the above proportioning ratio, and its chemical...

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Abstract

A low-smelting-point CuP-base intermediate alloy contains Cu, P, Si, Ni, Sb, Bi, Mn and Ag, and is prepared through proportioning pure Cu, red P, crystal Si, electrolytic Ni, pure Sb, pure Bi, and electrolytic Mn and Ag, pulverizing crystal Si, mixing with red P, wrapping by Cu foil, smelting electrolytic pure Cu, sequentially adding others, stirring, and casting ingot or atomizing to become particles. Its advantages are no pollution, low density and smelting point, and stable modifying effect.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a low-melting-point copper-phosphorus-based master alloy used for refining primary silicon in an aluminum-silicon alloy and a preparation method thereof. Background technique [0002] The primary silicon in aluminum-silicon alloys has to be refined to make such alloys useful. In industrial production, the method of adding phosphorus is generally used to refine primary silicon (also known as modification treatment), mainly in the form of red phosphorus, phosphorus salt or copper-phosphorus master alloy. However, there are many disadvantages in these methods: red phosphorus has a low ignition point (240°C), is unsafe to transport, and reacts violently when it deteriorates, producing a large amount of toxic P 2 o 5 Gas, which seriously pollutes the environment; the effect of phosphorus salt is unstable, and there are also environmental pollution problems during use; the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C9/00
Inventor 刘相法武玉英刘相俊乔进国边秀房
Owner SHANDONG UNIV
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