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A production process of corrosion-resistant copper alloy material for heat exchanger

A production process, copper alloy technology, applied in the production process field of corrosion-resistant copper alloy materials for heat exchangers, to achieve the effects of enhanced strength and wear resistance, refined grains, mechanical strength and excellent corrosion resistance

Active Publication Date: 2018-04-24
ANHUI PROPELLENT HEAT TRANSFER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion resistance and processing performance of existing copper alloy materials still need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A corrosion-resistant copper alloy material for heat exchangers, the mass percentage of each element in the copper alloy material is: Ni: 4.5%, Sn: 0.22%, Al: 3.8%, Zr: 0.06%, Cr: 0.06%, La : 0.009%, the balance is Cu and unavoidable impurities.

[0023] The production process of the corrosion-resistant copper alloy material for the above-mentioned heat exchanger comprises the following steps:

[0024] (1) Carry out raw material batching according to the mass percentage of each element, wherein Ni, Sn, Zr, Cr, La are to add with the form of copper-nickel alloy, copper-tin alloy, chromium-zirconium-copper alloy, copper-lanthanum alloy;

[0025] (2) Put the raw material in a vacuum melting furnace and melt it at 1150-1180°C; after melting, lower the temperature of the melt to 1080-1100°C, pour it into a mold, and cool it to room temperature to obtain a casting;

[0026] (3) Heat the casting to 900-930°C, heat it for 3 hours, and then hot-roll it into a slab, and then get...

Embodiment 2

[0031] A corrosion-resistant copper alloy material for a heat exchanger, the mass percent of each element in the copper alloy material is: Ni: 4.8%, Sn: 0.2%, Al: 4.5%, Zr: 0.06%, Cr: 0.06%, La : 0.01%, the balance is Cu and unavoidable impurities.

[0032] The production process of the corrosion-resistant copper alloy material for the above-mentioned heat exchanger comprises the following steps:

[0033] (1) Carry out raw material batching according to the mass percentage of each element, wherein Ni, Sn, Zr, Cr, La are to add with the form of copper-nickel alloy, copper-tin alloy, chromium-zirconium-copper alloy, copper-lanthanum alloy;

[0034] (2) Put the raw material in a vacuum melting furnace and melt it at 1150-1180°C; after melting, lower the temperature of the melt to 1080-1100°C, pour it into a mold, and cool it to room temperature to obtain a casting;

[0035] (3) Heat the casting to 900-930°C, heat it for 2.5 hours, and then hot-roll it into a slab, and then get a...

Embodiment 3

[0040] A corrosion-resistant copper alloy material for a heat exchanger, the mass percent of each element in the copper alloy material is: Ni: 3.4%, Sn: 0.15%, Al: 5.2%, Zr: 0.08%, Cr: 0.06%, La : 0.011%, the balance is Cu and unavoidable impurities.

[0041] The production process of the corrosion-resistant copper alloy material for the above-mentioned heat exchanger comprises the following steps:

[0042] (1) Carry out raw material batching according to the mass percentage of each element, wherein Ni, Sn, Zr, Cr, La are to add with the form of copper-nickel alloy, copper-tin alloy, chromium-zirconium-copper alloy, copper-lanthanum alloy;

[0043] (2) Put the raw material in a vacuum melting furnace and melt it at 1150-1180°C; after melting, lower the temperature of the melt to 1080-1100°C, pour it into a mold, and cool it to room temperature to obtain a casting;

[0044] (3) Heat the casting to 900-930°C, heat it for 3 hours, and then hot-roll it into a slab, and then get a...

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Abstract

The invention provides a corrosion-resistant copper alloy material for a heat exchanger and a production process of the corrosion-resistant copper alloy material. The copper alloy material comprises the elements of, in percentage by mass, 3.4-5.2% of Ni, 0.15-0.28% of Sn, 2.8-5.2% of Al, 0.02-0.08% of Zr, 0.06-0.1% of Cr, 0.003-0.011% of La and the balance Cu and inevitable impurities. A proper amount of the Zr is added into the copper alloy material, harmful impurities in the copper alloy can be eliminated, the strength and corrosion resistance of the copper alloy material can be effectively enhanced by the Cr, the Zr and the La act in a matched manner, the crystal particle of the copper alloy can be refined obviously, the crystal particle is made to be uniform, and the corrosion resistance and machining performance of the copper alloy material can be effectively improved; according to the production process of the copper alloy material, temperature parameters of all stages are controlled strictly, the comprehensive performance of the copper alloy material finally prepared can reach the optimal effect, and excellent corrosion resistance, mechanical strength and machining performance are achieved.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a production process of corrosion-resistant copper alloy materials for heat exchangers. Background technique [0002] Heat exchanger is a general-purpose equipment widely used in chemical industry, oil refining, power, food, light industry, atomic energy, pharmaceutical, machinery and many other industrial sectors, and plays an important role in production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are more widely used. According to statistics, in the modern chemical industry, the investment in heat exchangers accounts for about 30% of the total equipment investment, and in oil refineries, it accounts for about 40% of all process equipment. Seawater desalination process devices are almost all composed of heat exchangers. . [0003] Existing plate heat exchangers are high-efficiency and compact heat ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06C22C9/01C22C1/03C22F1/08F28F21/08
CPCC22C1/03C22C9/01C22C9/06C22F1/08F28F21/085
Inventor 张凌霞
Owner ANHUI PROPELLENT HEAT TRANSFER TECH CO LTD
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