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Preparation method of high-strength and wear-resistant copper alloy pipe

A wear-resistant copper and pipe technology, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of long process, high complexity, complex transformation process, etc., and achieve the effect of improving strength and increasing dispersion strengthening effect.

Active Publication Date: 2020-04-17
江苏隆达超合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] None of the above-mentioned patents involves the processing technology of copper-nickel-tin pipes. In pipe processing, the billet must first be made into a pipe billet, so the process is longer, the complexity is greater, and the process is more complicated.

Method used

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  • Preparation method of high-strength and wear-resistant copper alloy pipe
  • Preparation method of high-strength and wear-resistant copper alloy pipe

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, a method for producing high-strength copper alloy large-scale ingots by vacuum smelting is obtained by the following method:

[0034] (1) Ingredients: the raw materials used and their proportioning ratio are shown in Table 1,

[0035] Table 1

[0036] Element Grade standard mass percentage Electrolytic copper Cu99.95 GB / T467-2010 76.30％ Electrolytic nickel Ni99.95 GB / T6515-2010 14.00％ Tin ingots Sn99.95 GB / T 728-2010 9.00％ Niobium bar Nb1 GB / T 14842-2010 0.10％ Electrolytic manganese JMn98 GB / T 2774-2010 0.60％

[0037] (2) Melting: Use a vacuum induction furnace for smelting. After the alloy is completely melted, refine it for 10 minutes, reduce the power, and fill it with argon to 0.8×10 5 Pa, add manganese alloy in the upper silo, adjust the power to control the temperature of the molten metal;

[0038] (3) Casting: The molten metal casting temperature is 1250°C, using cast iron...

Embodiment 2

[0048] In this embodiment, a method for producing high-strength copper alloy large-scale ingots by vacuum smelting is obtained by the following method:

[0049] (1) Ingredients: the raw materials used and their proportioning ratio are shown in Table 2,

[0050] Table 2

[0051] Element Grade standard mass percentage Electrolytic copper Cu99.95 GB / T467-2010 76.60％ Electrolytic nickel Ni99.95 GB / T6515-2010 15.00％ Tin ingots Sn99.95 GB / T 728-2010 8.00％ Niobium bar Nb1 GB / T14842-2007 0.20％ Electrolytic manganese JMn98 GB / T 2774-2008 0.20％

[0052] (2) Melting: Use a vacuum induction furnace for smelting. After the alloy is completely melted, refine it for 15 minutes, reduce the power, and fill it with argon to 0.85×10 5 Pa, add manganese alloy in the upper silo, adjust the power to control the temperature of the molten metal;

[0053](3) Casting: The molten metal casting temperature is 1270°C, using cast iron ...

Embodiment 3

[0063] In this embodiment, a method for producing high-strength copper alloy large-scale ingots by vacuum smelting is obtained by the following method:

[0064] (1) Ingredients: the raw materials used and their proportioning ratio are shown in Table 3,

[0065] table 3

[0066] Element Grade standard mass percentage Electrolytic copper Cu99.95 GB / T467-2010 76.45％ Electrolytic nickel Ni99.96 GB / T6515-2010 16％ Tin ingots Sn99.97 GB / T 728-2010 7％ Niobium bar Nb1 GB / T14842-2007 0.15％ Electrolytic manganese JMn98 GB / T 2774-2008 0.40％

[0067] (2) Melting: Use a vacuum induction furnace for smelting. After the alloy is completely melted, refine it for 20 minutes, reduce the power, and fill it with argon to 0.95×10 5 Pa, add manganese alloy in the upper silo, adjust the power to control the temperature of the molten metal;

[0068] (3) Casting: The molten metal casting temperature is 1280°C, using cast iron molds...

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Abstract

The invention discloses a preparation method of a high-strength and wear-resistant copper alloy pipe. A high-strength and wear-resistant copper alloy pipe comprises following components in percentageby weight: 14 to 16 percent of nickel, 7 to 9 percent of tin, 0 to 0.2 percent of niobium, 0 to 0.8 percent of manganese, and the balance being copper and inevitable impurities. The invention furtherdiscloses the preparation method of the high-strength and wear-resistant copper alloy pipe. The preparation method of the high-strength and wear-resistant copper alloy pipe comprises the steps of carrying out compounding, smelting, casting, coping, forging, solution treatment, machining, cold rolling, sizing and detecting, and processing a banner, thus obtaining the high-quality copper-nickel-tinalloy pipe. The preparation method has the advantages that an ingot casting can be quickly heated to the temperature required for a process by adopting high-frequency induction heating, so that the defect of segregation caused by too slow heating speed is prevented; by controlling the heating speed, the final forging temperature and the cooling speed, the defect of segregation in a pipe blank is forbidden; and the complete copper-nickel-tin alloy pipe processing method is provided and is suitable for multi-specification copper-nickel-tin alloy pipe production in small quantities at the same time.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a preparation method of a high-strength wear-resistant copper alloy pipe. Background technique [0002] Copper-nickel-tin alloys have the characteristics of high strength, elasticity, certain conductivity, excellent corrosion resistance and friction performance, high temperature stress resistance, non-toxicity, and low cost. Among them, Cu-15Ni-8Sn alloys are used After a large deformation heat treatment, due to the decomposition of phases, a periodic amplitude-modulated structure is formed in the alloy, and an ultra-high-strength copper alloy with a tensile strength of 1400 MPa can be obtained, thereby replacing Cu-Be alloys, which has broad application prospects and is therefore very popular. Big attention. [0003] At present, most of the patents on copper-nickel-tin alloys involve the design of components and the production of rods. There is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/03C22F1/08C21D9/08C22F1/02B21C37/06
CPCB21C37/06C21D9/085C22C1/03C22C9/06C22F1/02C22F1/08
Inventor 高鑫浦海涌李淑苹周向东郑晓飞曾秋婷
Owner 江苏隆达超合金股份有限公司
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