Corrosion-resistant white copper tube and manufacturing method thereof

A kind of white copper tube, corrosion-resistant technology, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of low plasticity, difficult to adapt to the coil drawing production method, limited life of copper-nickel alloy materials, etc., to achieve excellent mechanical properties and Conductivity, fast work hardening rate, resistance to seawater and erosion corrosion

Inactive Publication Date: 2014-04-23
江西九星铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a corrosion-resistant white copper tube for marine use and its preparation method, which solves the problems o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] By weight percentage, its chemical composition and content are as follows:

[0046] Carbon C: 0.025; Silicon Si: 0.15; Manganese Mn: 7.0; Sulfur S: 0.0045; Phosphorus P: 0.18; Nickel Ni: 23.0; Cobalt Co: 3.0; Zinc Zn: 3.8; Lead Pb: 0.30; Iron Fe: 3.5; Rare earth element cerium: 0.18; arsenic As: 0.008; copper Cu: balance.

[0047] According to the above-mentioned alloy composition, first, put the copper raw material into the power frequency induction furnace, and cover it with charcoal covering agent; then, raise the temperature of the furnace to 1350°C, add iron, cobalt and nickel after the furnace materials are completely melted, and then add the intermediate Alloys: silicon-copper, manganese-copper, zinc-copper, and intermediate alloys: lead-copper, phosphor-bronze, arsenic-copper and Cu-15wt% cerium are added 10 minutes before the furnace is released; finally, the composition is adjusted, and the copper alloy molten metal is injected into the crystallizer Preparati...

Embodiment 2

[0051] By weight percentage, its chemical composition and content are as follows:

[0052] Carbon C: 0.022; silicon Si: 0.12; manganese Mn: 6.5; sulfur S: 0.0035; phosphorus P: 0.16; nickel Ni: 22.5; cobalt Co: 2.5; zinc Zn: 3.5; lead Pb: 0.25; iron Fe: 3.8; Rare earth element cerium: 0.16; arsenic As: 0.006; copper Cu: balance.

[0053] According to the above-mentioned alloy composition, firstly, put the copper raw material into the power frequency induction furnace and cover it with charcoal covering agent; then, raise the temperature of the furnace to 1360°C, add iron, cobalt and nickel after all the furnace materials are melted, and then add the intermediate Alloys: silicon-copper, manganese-copper, zinc-copper, and intermediate alloys: lead-copper, phosphor-bronze, arsenic-copper and Cu-15wt% cerium are added 8 minutes before the furnace is released; finally, the composition is adjusted, and the copper alloy molten metal is injected into the crystallizer Preparation of c...

Embodiment 3

[0057] By weight percentage, its chemical composition and content are as follows:

[0058] Carbon C: 0.020; Silicon Si: 0.10; Manganese Mn: 6.0; Sulfur S: 0.0028; Phosphorus P: 0.15; Nickel Ni: 22.0; Cobalt Co: 4.0; Zinc Zn: 4.0; Lead Pb: 0.40; Iron Fe: 3.0; Rare earth element lanthanum: 0.15; arsenic As: 0.005; copper Cu: balance.

[0059] According to the above-mentioned alloy composition, first, put the copper raw material into the power frequency induction furnace and cover it with charcoal covering agent; then, raise the temperature of the furnace to 1380°C, add iron, cobalt and nickel after the furnace materials are completely melted, and then add the intermediate Alloys: silicon-copper, manganese-copper, zinc-copper, and intermediate alloys: lead-copper, phosphor-copper, arsenic-copper and Cu-15wt% lanthanum are added 12 minutes before the furnace is released; finally, the composition is adjusted, and the copper alloy molten metal is injected into the crystallizer Prep...

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Abstract

The invention relates to the field of copper-nickel alloys, in particular to a corrosion-resistant white copper tube and a manufacturing method thereof. The corrosion-resistant white copper tube comprises the following chemical components in percentage by weight: less than or equal to 0.03 percent of C, 0.10-0.20 percent of Si, 6.0-8.0 percent of Mn, less than or equal to 0.005 percent of S, 0.15-0.20 percent of P, 22.0-24.0 percent of Ni, 2.0-4.0 percent of Co, 2.0-4.0 percent of Zn, 0.20-0.40 percent of Pb, 3.0-4.0 percent of Fe, 0.15-0.20 percent of RE, 0.005-0.010 percent of As and the balance of Cu. The method comprises the following steps: manufacturing a white copper tube blank by performing induction smelting; performing coil stretching production on the white copper tube blank through the procedures of casting, sawing, water seal extrusion, tube rolling, disk stretching, disk blade die peeling, disk stretching, stretching by using a Schumag combined pulling machine, straight bar stretching and annealing. By adopting the corrosion-resistant white copper tube, the problems of limited service life of the conventional copper-nickel alloy material and non-adaptability to coil stretching production due to poor elasticity are solved, and coil stretching is realized.

Description

technical field [0001] The invention relates to the field of nickel-copper alloys, in particular to a corrosion-resistant white copper tube for marine use and a preparation method thereof. Background technique [0002] With the development of the marine industry and the process of strengthening the naval construction, the demand for copper and copper alloy condenser pipes is growing rapidly. In 2011, the domestic demand for high-precision copper and copper-nickel alloy pipes in the three industries of electric power, shipbuilding, and seawater desalination has reached 60,000 tons. The demand for high-precision copper and copper alloy pipes in the domestic market will continue to grow. It is expected that By 2015, domestic demand will exceed 100,000 tons. [0003] In the 1990s, boron-added HSn70-1B was developed, and Mn, Ni and trace rare earth element cerium HSn70-1AB were added, and the strength and corrosion resistance were further improved, but the dezincification corros...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/03C22F1/08C21D8/10F16L9/02
Inventor 李文君刘刚王瑛
Owner 江西九星铜业有限公司
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