5A06H14 sheet metal with thickness of 8.5mm, and preparation method thereof
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A 5A06H14, plate technology, applied in the field of plate and its 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: 2013-01-30
NORTHEAST LIGHT ALLOY CO LTD
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[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 8.5mm thick 5A06H14 plate and its preparation method
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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%~0.8%, Mg: 5.8%~6.8%, Si: 0.1%~0.4%, Fe: 0.1%~ 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%~0.2%, Be: 0.0001%~0.005%, Ti: 0.02%~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 the melting furnace for melting, the melting temperature is 700~750°C, and the melting time is 3~5h to obtain the 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 cooling water pressure of 0...
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 5A06H14 sheet metal with a thickness of 8.5mm, and a preparation method thereof. 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 board and a preparation method thereof. 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 th...
Claims
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