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Manufacturing process of high-fin cupronickel alloy efficient pipe

A manufacturing process and high-efficiency tube technology, which is applied in the field of high-fin cupronickel alloy high-efficiency tube manufacturing process, can solve problems such as high cracking probability, and achieve the effect of high process feasibility and high yield

Active Publication Date: 2021-02-02
江苏隆达超合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] BFe10-1-1 copper alloy high-efficiency tubes are widely used in air conditioners and heat exchangers, which can greatly improve heat exchange efficiency. The higher the fin height, the higher the heat exchange efficiency, and the easier it is to compact and enlarge the equipment. High-efficiency tubes with a height / bottom wall thickness of more than 2 are a threshold for high-efficiency tube manufacturing, and the probability of cracking after fin rolling is high, especially for materials such as copper alloys with relatively high strength and relatively low plasticity. High-quality BFe10-1-1 copper alloy outer surface reinforced high-finned high-efficiency tube manufacturing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]A manufacturing process of a high-fin white copper alloy high-efficiency tube includes the following steps:

[0028](1) An ingot with a material of BFe10-1-1 and a diameter of 181.32mm is obtained by melting and casting. The content of each component of the BFe10-1-1 material is adjusted to: the nickel content is 9.21wt%, and the manganese content is 0.559 wt %, iron content is 1.23 wt%, lead content is 0.00562 wt%, phosphorus content is 0.00355 wt%, sulfur content is 0.00476 wt%, silicon content is 0.00199 wt%, zinc content is 0.0228 wt%, tin content is 0.00197 wt% , The balance is copper;

[0029](2) Preheat the tool and die of the copper hot extrusion machine, in which the temperature of the extrusion liner is controlled at 300℃, the temperature of the perforation needle is controlled at 300℃, the temperature of the extrusion pad is controlled at 200℃, and the temperature of the extrusion die Control at 200°C; cut the ingot obtained in step (1), heat the ingot to 750°C and use a ...

Embodiment 2

[0042]A manufacturing process of a high-fin white copper alloy high-efficiency tube includes the following steps:

[0043](1) An ingot with a material of BFe10-1-1 and a diameter of 180.76mm is obtained by melting and casting. The content of each component of the BFe10-1-1 material is adjusted to: the nickel content is 9.25wt%, the manganese content is 0.610 wt %, iron content is 1.27 wt%, lead content is 0.00576 wt%, phosphorus content is 0.00373 wt%, sulfur content is 0.00644 wt%, silicon content is 0.001 wt%, zinc content is 0.0409 wt%, tin content is 0.00153 wt% , The balance is copper;

[0044](2) Preheat the tool and die of the copper hot extrusion machine, in which the temperature of the extrusion lining is controlled at 400℃, the temperature of the perforation needle is controlled at 400℃, the temperature of the extrusion pad is controlled at 300℃, and the temperature of the extrusion die Control at 300°C; cut the ingot obtained in step (1), heat the ingot to 850°C and use a coppe...

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PUM

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Abstract

The invention relates to a manufacturing process of a high-fin cupronickel alloy efficient pipe. The manufacturing process comprises the following steps of casting, hot extrusion, first annealing, rolling, cogging, heading and stretching, second annealing, empty drawing, fin rolling, cleaning, rinsing, purging and drying, stress relief heat treatment, straightening, sizing, inspection and detection, and packaging and warehousing. According to the manufacturing process, the plasticity of a BFe10-1-1 copper alloy pipe blank is improved, the probability of foreign matter pressing in the large-deformation stretching process is reduced, the cracking situation during fin rolling is greatly reduced, the manufacturing selectivity of the efficient pipe with different finished product performance requirements is improved, and the process is high in feasibility and high in yield.

Description

Technical field[0001]The invention belongs to the technical field of manufacturing high-efficiency copper alloy tubes with enhanced outer surface, and specifically relates to a manufacturing process for high-fin copper-nickel alloy high-efficiency tubes.Background technique[0002]BFe10-1-1 copper alloy high-efficiency tubes are widely used in air conditioners and heat exchangers, which can greatly improve the heat exchange efficiency. The higher the fin height, the higher the heat exchange efficiency, and the easier the equipment is compact and large, but the fin High-efficiency pipes with a height / bottom wall thickness of more than 2 are a threshold for high-efficiency pipe manufacturing, and the probability of cracking after rolling fins is high, especially for copper alloys with relatively high strength and relatively low plasticity. Therefore, there is an urgent need for a feasible operation and success rate. The manufacturing process of high-efficiency BFe10-1-1 copper alloy out...

Claims

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Application Information

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IPC IPC(8): B21C37/22C22F1/08C21D9/08C22C9/06
CPCB21C37/22C22F1/08C21D9/08C22C9/06
Inventor 王植栋浦益龙周向东高云龙陈芳
Owner 江苏隆达超合金股份有限公司
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