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High-strength aluminum belt for power station air cooling and manufacturing method thereof

A manufacturing method and high-strength technology, applied in the field of aluminum foil rolling manufacturing, can solve the problems of low yield, high energy consumption, large investment, etc., and achieve the effects of high yield, high support strength, and high heat dissipation efficiency

Inactive Publication Date: 2020-07-03
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose: In order to overcome the problems of large investment, high energy consumption and low yield in existing aluminum strip manufacturing methods, the present invention provides a high-strength aluminum strip for power station air cooling and its manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Si 0.2% by weight, Fe 0.4%, Cu 0.55%, Mn 0.9%, Zn0.05%, and the rest is aluminum as the basic ingredient to prepare alloy raw materials; the added copper element is copper agent;

[0020] 2. Melt the raw materials, the melting temperature is in the range of 720-760 ° C, after the melt is stirred, slag removed, and refined, it is poured into a static furnace at 720-760 ° C to keep it warm, and it needs to be refined again during the heat preservation process. The furnace temperature is 720-750°C; after that, 7.0mm cast-rolled coils are obtained by casting and rolling;

[0021] 3. Roughly roll the cast-rolled parent coil to a thickness of 4.0mm by rough rolling to 4.0mm for uniform annealing, then heat it up to 240°C at a constant speed for 2 hours and hold it for 3 hours, then continue to heat it up to 550°C at a constant speed for 6 hours and cool it out of the furnace ;

[0022] 4. After uniform annealing, the coil is rolled to a thickness of 0.5mm by 4.0mm—2.0mm—1...

Embodiment 2

[0028] 1. Si 0.11% by weight, Fe 0.31%, Cu 0.51%, Mn 0.71%, Zn0.05%, and the rest is aluminum as the basic ingredient to prepare alloy raw materials; the added copper element is copper agent;

[0029] Other steps are the same as described in Example 1.

Embodiment 3

[0031] 1. According to the proportion of Si 0.29%, Fe 0.49%, Cu 0.69%, Mn 0.99%, Zn0.05%, the rest is aluminum as the basic component, and the alloy raw material is prepared; the added copper element is copper agent;

[0032] Other steps are the same as described in Example 1.

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PUM

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Abstract

The invention discloses a high-strength aluminum belt for power station air cooling. According to mass percentages, the compositions of the high-strength aluminum belt for power station air cooling comprise 0.10% to 0.30% of Si, 0.30% to 0.50% of Fe, 0.50% to 0.70% of Cu, and 0.7% to 1.0% of Mn; the mass percentage of Zn is less than or equal to 0.1%, the mass percentage of Ti is less than or equal to 0.10%, and the balance is Al; and the thickness of the finished aluminum strip is 0.2 mm to 0.3 mm. The manufacturing method of the high-strength aluminum belt for power station air cooling comprises the following steps of: smelting, casting rolling, rough rolling, homogenizing annealing, rough rolling trimming, finishing rolling, finished product annealing, and slitting, inspection and packaging. According to the aluminum belt for power station air cooling provided by the invention, a casting rolling billet with a lower cost is used; the homogenizing annealing, rolling, trimming, and finished product annealing treatments are performed when the aluminum roll reaches a thickness of 3.0 mm to 5.0 mm, so that the same final mechanical properties as a hot-rolled billet can be achieved, and the effect that the subsequent rolling process is smooth without cracking or blocking is ensured; the high-strength aluminum belt for power station air cooling has high support strength after brazing, high heat dissipation efficiency and short process; and the high-strength aluminum belt for power station air cooling reduces the production cost, meets the technical requirements of high-strengthaluminum strip for power station air cooling (direct cooling), and has the advantages of lower cost, higher yield, easy production and the like.

Description

technical field [0001] The invention relates to a high-strength aluminum strip for power station air cooling and a manufacturing method thereof, belonging to the technical field of aluminum foil calendering manufacturing. Background technique [0002] High-strength aluminum strips for power station air-cooling (direct cooling) are widely used in the field of power station air-cooling (direct cooling), mainly used for fin materials for tube-fin heat exchangers in power station air-cooling islands (direct cooling), the purpose is to pass heat conduction, convection, etc. Cooling power station high temperature water vapor. The traditional manufacturing method adopts smelting-casting-sawing-milling-heating-hot rolling and subsequent processing methods. This method has the disadvantages of large equipment investment, long production process, high energy consumption, and low yield. Contents of the invention [0003] Objective: In order to overcome the problems of large investme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/52C22F1/04C22C21/00C22C1/02B21B3/00
CPCB21B3/00B21B2003/001C21D9/52C22C1/026C22C21/00C22F1/04
Inventor 刘前换卢建兵田国建胡刘飞史明飞任素贞
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD