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Method for producing Al-Mg-Si alloy plate

A manufacturing method and alloy plate technology, applied in the direction of metal rolling, can solve the problems of low strength, poor thermal conductivity and electrical conductivity, and achieve the effect of high workability

Active Publication Date: 2018-11-23
堺アルミ株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although pure aluminum alloys such as JIS1100, 1050, and 1070 have excellent thermal conductivity, they have low strength
The thermal conductivity and electrical conductivity of Al-Mg alloys (5000 series alloys) such as JIS5052 used as high-strength materials are significantly worse than pure aluminum alloys

Method used

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  • Method for producing Al-Mg-Si alloy plate
  • Method for producing Al-Mg-Si alloy plate
  • Method for producing Al-Mg-Si alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0102] Examples and comparative examples of the present invention are shown below.

no. 1 Embodiment

[0104] This embodiment is an embodiment related to the invention according to claims 1-10.

[0105] Aluminum alloy cast slabs having different chemical compositions shown in Table 1 were obtained by the DC casting method.

Embodiment 1

[0107] The aluminum alloy casting slab of chemical composition number 1 in Table 1 was subjected to face cutting. Next, the face-cut alloy slab was homogenized at 560° C. for 5 hours in a heating furnace, and then heated before hot rolling at 540° C. for 4 hours at different temperatures in the same furnace. The slab heated at 540° C. before hot rolling was taken out from the heating furnace, and rough hot rolling was started. After the thickness of the alloy sheet in the rough hot rolling becomes 25 mm, the final pass of the rough hot rolling is carried out at an average cooling rate of 80° C. / min from the alloy sheet temperature 461° C. immediately before the start of the pass. An alloy plate having a rolling finish temperature of 243° C. and a thickness of 12 mm. In addition, in the final pass of rough hot rolling, forced cooling is performed, the alloy sheet is moved while rolling, and water is sprayed onto the alloy sheet from the top and bottom of the rolled alloy sheet...

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Abstract

Provided is a method for producing an Al-Mg-Si alloy plate that exhibits high strength while also exhibiting favorable workability and high conductivity. Thus, a method for producing an alloy plate bysequentially hot rolling and cold rolling an Al-Mg-Si alloy ingot, wherein the surface temperature of the Al-Mg-Si alloy plate immediately following completion of the hot rolling is 230 degree centigrade or less, and a heat treatment is performed at a temperature no less than 200 degree centigrade and less than 400 degree centigrade after completing the hot rolling and before completing the coldrolling.

Description

technical field [0001] The present invention relates to a method for manufacturing an Al-Mg-Si alloy sheet, and more particularly to a method for manufacturing an Al-Mg-Si alloy sheet excellent in thermal conductivity, electrical conductivity, strength, and workability. Background technique [0002] Built into the chassis, metal base printed circuit board, and inner cover of products such as thin TVs, thin displays for personal computers, notebook computers, tablet personal computers, car navigation systems, portable navigation systems, smartphones, mobile phones, etc. Or, among materials for components to which a heating element is mounted, excellent thermal conductivity, strength, and workability for rapid heat dissipation are required. [0003] Although pure aluminum alloys such as JIS1100, 1050, and 1070 have excellent thermal conductivity, they have low strength. Al—Mg alloys (5000-series alloys) such as JIS 5052 used as high-strength materials are remarkably inferior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/05B21B1/22B21B3/00C22C21/02C22C21/06C22F1/00
CPCB21B1/22B21B3/00C22C21/02C22C21/06C22F1/00C22F1/05
Inventor 西森秀树笼重真二谷口和章山之井智明
Owner 堺アルミ株式会社
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