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Preparation method of ferrimanganic copper-nickel tube

A technology of iron-manganese-nickel-white and white-copper tubes, applied in the direction of material magnetic variables, wire drawing dies, etc., can solve the problems of insufficient high corrosion resistance and high erosion resistance, large impact of refrigeration shutdown and maintenance, and large maintenance costs. The effect of improving surface quality, refining alloy grains and improving cold workability

Active Publication Date: 2010-05-19
江阴和宏精工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Brass tubes: The cost of brass tubes is relatively low, but the corrosion resistance and processing performance are not as good as those of white copper tubes. Generally, it needs to be repaired and replaced in about three years.
The maintenance costs of power stations and ships are high, and the maintenance of refrigeration shutdowns has a great impact
[0004] Nickel white copper tube: nickel white copper tube has good corrosion resistance and erosion resistance, but it is not enough in high corrosion resistance and high erosion resistance

Method used

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  • Preparation method of ferrimanganic copper-nickel tube

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Embodiment Construction

[0040] The invention relates to a method for preparing an iron-manganese-nickel-nickel-nickel tube. The weight percentage of each element of the iron-manganese-nickel-nickel tube is:

[0041] Nickel 29-32%

[0042] Manganese 1.5-2.5%

[0043] Iron 1.7-2.3%

[0044] Miscellaneous rare earths 0.008%

[0045] The balance is electrolytic copper

[0046] The sum of the elements is 100%,

[0047] The mixed rare earth is formed by mixing lanthanum, cerium and yttrium according to the weight ratio of lanthanum: cerium: yttrium = 2:2:1.

[0048] Its preparation method comprises the following process steps:

[0049] Step 1. Take electrolytic copper, nickel, manganese and iron according to the ratio and place them in a low-frequency electric furnace, heat them to 1560-1610°C, vibrate while melting, add mixed rare earth, and cast them into a solid body of φ160nn×250mm by horizontal continuous casting Ingot;

[0050] Step 2: Heating the cast solid ingot to 1000-1050°C and extruding ...

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Abstract

The invention relates to a preparation method of a ferrimanganic copper-nickel tube. The ferrimanganic copper-nickel tube comprises the following elements by weight percent: 29-32% of nickel, 1.5-2.5% of manganese, 1.7-2.3% of iron, 0.008% of mixed rare earth, and the balance electrolytic copper; the sum of each element is 100%; the mixed rare earth is prepared by mixing lanthanum, cerium and yttrium according to the weight ratio of 2:2:1. The preparation method comprises the following steps: taking electrolytic copper, nickel, manganese and iron; placing into a low-frequency electric furnace; heating, vibrating while smelting; adding the mixed rare earth; casting into a solid billet by adopting a horizontal continuous casting method; heating, extruding into a blank pipe; rolling, stretching and acid cleaning; carrying out multichannel stretching until the finished product is prepared; and annealing the finished product. As the mixed rare earth is added, the preparation method of the invention can improve the surface quality of the billet, refine alloy crystal particles, and improve cold machining performance, so that better manganese and iron can be added into the alloy, and high manganese and high iron can greatly improve corrosion resistance and washing resistance of the ferrimanganic copper-nickel tube.

Description

(1) Technical field [0001] The invention relates to a preparation method of an iron-manganese-nickel white copper tube. The copper tube is mainly used in heat exchangers in power stations, ships, refrigeration, seawater desalination and other industries as heat exchange tubes. (2) Background technology [0002] At present, with the development of industries such as power stations, ships, refrigeration, and seawater desalination, it is necessary to find a heat exchange tube material with high corrosion resistance and high erosion resistance. Most of the heat exchange tubes currently used are ordinary brass tubes and nickel white copper tubes. Ordinary brass tubes and ordinary nickel white copper tubes have their shortcomings, which are described below: [0003] Brass tubes: The cost of brass tubes is relatively low, but the corrosion resistance and processing performance are not as good as those of white copper tubes. Generally, a batch of brass tubes needs to be repaired a...

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Application Information

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IPC IPC(8): C22C9/06C22C1/02B22D11/045B22D11/114C21D8/10B21C37/06B21C3/02G01N27/90
Inventor 胡汉全胡天明
Owner 江阴和宏精工科技有限公司