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5A06H14 sheet metal with thickness of 8.5mm, and preparation method thereof

A 5A06H14, plate technology, which is applied in the field of plate preparation, can solve the problems of unstable strength, low tensile strength, and low yield strength of alloy ingots, and achieve the effects of uniform ingot structure, stable strength, and good surface finish

Active Publication Date: 2014-07-02
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the problems of 8.5mm thick 5A06H14 plate prepared by the existing method, the alloy ingot has unstable strength, low yield strength, low tensile strength and large unevenness, and provides a preparation method for 8.5mm thick 5A06H14 plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Embodiment 1: The components of the 8.5mm thick 5A06H14 plate in this embodiment are composed of Mn: 0.5% to 0.8%, Mg: 5.8% to 6.8%, Si: 0.1% to 0.4%, Fe: 0.1% to 0.4%, Cu: 0.01%~0.1%, Zn: 0.01%~0.2%, Be: 0.0001%~0.005%, Ti: 0.02%~0.10%, and the balance ratio of Al.

specific Embodiment approach 2

[0019] Specific embodiment two: the preparation method of the 8.5mm thick 5A06H14 plate of the present embodiment is carried out according to the following steps:

[0020] 1. According to the percentage of elements in the 8.5mm thick 5A06H14 plate, Mn: 0.5% ~ 0.8%, Mg: 6.4% ~ 6.8%, Si: 0.1% ~ 0.4%, Fe: 0.1% ~ 0.4%, Cu: 0.01% ~ 0.1% %, Zn: 0.01% to 0.2%, Be: 0.0001% to 0.005%, Ti: 0.02% to 0.10% and the balance of Al, respectively weigh Al-Mn master alloy, pure magnesium ingot, Al-Si master alloy, Al Iron master alloy, aluminum copper master alloy, aluminum zinc master alloy, aluminum beryllium master alloy, aluminum titanium master alloy and pure aluminum ingot;

[0021] 2. Add the metal weighed in step 1 into a melting furnace for melting, the melting temperature is 700-750°C, and the melting time is 3-5 hours to obtain an alloy melt;

[0022] 3. Using the semi-continuous casting method, cast the molten alloy obtained in step 2 at a casting temperature of 700-715°C, a coolin...

specific Embodiment approach 3

[0030] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the smelting temperature in step 2 is 740°C. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to a preparation method of a 5A06H14 sheet metal with a thickness of 8.5mm. The invention relates to a sheet metal and a preparation method thereof. The invention aims at solving the problems of unstable alloy ingot strength, low yield strength, low tensile strength, and large unevenness of 8.5mm-thick 5A06H14 sheet metals produced with prior arts. The preparation method comprises the steps of: 1, material blending; 2, smelting; 3, casting; 4, homogenizing annealing; 5, sawing, edge planing and surface milling; 6, aluminum coating; 7, hot rolling; 8, cold rolling; 9, pre-stretching; and 10, sawing. With the steps, the 8.5mm-thick 5A06H14 sheet metal is obtained. With the method provided by the invention, the prepared 8.5mm-thick 5A06H14 sheet metal has a yield strength of 373-420MPa, a tensile strength of 285-330MPa, an elongation of 8% to 12%, an unevenness less than 8mm / m, and a same plate difference less than 0.25mm. The method provided by the invention is applied in industrialized productions of 5A06 sheet metals.

Description

technical field [0001] The invention is applicable to a preparation method of a board. Background technique [0002] The 8.5mm thick 5A06H14 plate is Mg-Al-Si alloy, which is widely used in welding parts of transportation equipment, pressure vessels requiring strict fire protection (such as liquid tankers, refrigerated trucks, refrigerated containers), refrigeration devices, TV towers, drilling equipment, Missile parts, armor, etc. In the current production of 8.5mm thick 5A06H14 plate, the strength of the alloy ingot is unstable because the composition ratio of the alloy ingot is not controlled during the melting and casting process; the hot-rolled thickness, cold-rolled thickness, and cold-working conditions of the plate are not strictly controlled , resulting in unstable mechanical properties of the sheet, low yield strength, usually only 160-250MPa; low tensile strength, usually only 315MPa; no pre-stretching of the finished sheet, resulting in unevenness of the sheet g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047
Inventor 于莉莉赵永军马英义郝思巍王强杜传慧苏广焱宁涛王海彬
Owner NORTHEAST LIGHT ALLOY CO LTD
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