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Nickel-copper alloy with high strength and high corrosion resistance and manufacturing method thereof

A high corrosion resistance, nickel-copper alloy technology, applied in the field of copper-nickel alloys, can solve problems such as failure to see, and achieve the effects of easy production in processing links, simple processing links and lower production costs.

Active Publication Date: 2013-02-13
沈阳有色金属研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Long-term seawater immersion will cause certain corrosion. How to improve the performance and corrosion resistance of nickel-copper alloys has long been a subject of intensive research by scientific and technical personnel in this field, but no relevant reports on breakthroughs have been seen so far.

Method used

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  • Nickel-copper alloy with high strength and high corrosion resistance and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] (1) Prepare alloy materials with electrolytic nickel, electrolytic copper, manganese, iron, silicon, metal magnesium, and metal titanium. The design masses of each group are: electrolytic nickel 14.275 kg, electrolytic copper 10.25 kg, manganese 0.325 kg, iron 0.075 kg, 0.025 kg of silicon, 0.02 kg of magnesium, 0.035 kg of titanium metal (loaded into a 25kg smelting furnace step by step) The operating procedure is as follows: nickel + copper + iron + glass → melting → adding manganese, silicon → stirring to remove slag → adding Glass→stirring→sampling before furnace analysis→temperature measurement→adding titanium and magnesium→sampling→casting;

[0017] (2) Formed by casting, heated to 950-1050°C after casting ingots, billet-rolled and billeted, manually repaired by multiple stretching blade dies, stripped and skinned, annealed at 800-850°C, and then drawn into finished alloys. The total processing rate is controlled between 60-70%, and the finished product processing...

Embodiment 2

[0029] (1) Electrolytic nickel, electrolytic copper, manganese, iron, metal magnesium, and metal titanium are used as raw materials to prepare alloy materials. The design masses of each group are electrolytic nickel 14.458 kg, electrolytic copper 10 kg, manganese 0.35 kg, iron 0.1 kg, and silicon powder 0.03 kg, 0.0175 kg of magnesium, 0.0325 kg of titanium (into a 25 kg melting furnace step by step); the operation procedure is as follows: nickel + copper + iron + glass → melting → adding manganese, silicon → stirring to remove slag → adding glass → stirring → Sampling before furnace analysis→temperature measurement→adding titanium and magnesium→sampling→casting;

[0030] (2) After the ingot is processed, it is heated to 950℃~1050℃ to open the billet and roll the billet. After several times of stretching and peeling, it is manually repaired and then annealed at 800~850℃ to draw the finished alloy; the total processing rate is controlled within 60-70%. During the period, the fi...

Embodiment 3

[0033] (1) Prepare alloy materials with electrolytic nickel, electrolytic copper, manganese, iron, metal magnesium, and metal titanium as raw materials. The design masses of each group are electrolytic nickel 14.598 kg, electrolytic copper 9.78 kg, manganese 0.4 kg, iron 0.15 kg, silicon 0.0325 kg of powder, 0.015 kg of magnesium, and 0.03 kg of titanium (loaded into a 25kg melting furnace step by step); the operating procedure is as follows: nickel + copper + iron + glass → melting → adding manganese, silicon → stirring to remove slag → adding glass → stirring →Sampling before furnace analysis→temperature measurement→adding titanium and magnesium→sampling→casting;

[0034] (2) After the ingot is processed, it is heated to 950℃~1050℃ to open the billet and roll the billet. After several times of stretching and peeling, it is manually repaired and then annealed at 800~850℃ to draw the finished alloy; the total processing rate is controlled within 60-70%. During the period, the ...

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Abstract

The invention discloses a nickel-copper alloy with high strength and high corrosion resistance and a manufacturing method thereof. The method takes electrolytic copper and electrolytic nickel as major components, a small amount of manganese, iron, silicon, metal magnesium and metal titanium is added, and the impurity accounts for less than or equal to 0.5%. According to the invention, the components are sequentially put into a smelting furnace and subjected to the steps of smelting, stirring and slag extraction, refining, casting formation and the like to obtain a finished product of the nickel-copper alloy. Through the invention, the tensile strength is 670-720Rm / MPa, the elongation is 6-7.5, the strength is improved by 15% over the existing domestic nickel-copper alloy, and the corrosion resistance is improved by about twice. The nickel-copper alloy disclosed by the invention is widely applicable, has long service life and the like, can be used for producing plates, belts, pipes, rods, lines and forgings, and is applied to the industries such as shipbuilding, chemical industry, machinery manufacturing, aerospace, electronics and the like. The manufacturing method disclosed by the invention changes the original vacuum casting process, adopts a semi-continuous smelting method and reduces the production cost.

Description

technical field [0001] The invention relates to the technical field of copper-nickel alloys, in particular to a nickel-copper alloy with high strength and high corrosion resistance and a manufacturing method thereof. Background technique [0002] Due to the advantages of high corrosion resistance, high elasticity, and high strength (compared to other copper alloys), nickel-copper alloys are widely used in shipbuilding, chemical industry, electronics, aerospace and other industries. Used in the manufacture of military corrosion-resistant components, various springs and plug-ins. [0003] When Ni and Cu are melted at high temperature, they are infinite solid solution and face-centered cubic lattice. At present, the tensile strength of nickel-copper alloy NCu40-2-1 rods produced in China is φ5~φ20 635Rm / MPa, the elongation performance is 4A / %>φ20~φ30, 598Rm / MPa, and the elongation performance is 5A / %. Long-term immersion in seawater will cause certain corrosion. How to imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/02C22F1/10
Inventor 周明孙海忠郑新文
Owner 沈阳有色金属研究所有限公司
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