阅读说明：本技术 一种5a12铝合金热轧坯料及其生产方法 (5A12 aluminum alloy hot-rolled blank and production method thereof ) 是由 李国锋 邓艳超 谭盼 李伟坡 刘杰 王军伟 闫帅杰 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种5A12铝合金热轧坯料及其生产方法。该方法以纯铝锭和纯镁锭为原料配料熔炼,所得合金液进行精炼,精炼后静置,将静置后所得合金液进行铸造,得到铝合金铸锭；将所得5A12铝合金铸锭进行三级均匀化处理；然后将铸锭进行铣面,铣面后采用“醋酸水空气联合除杂法”进行处理；处理后铸锭依次进行均质加热、热粗轧和热精轧,最终得到产品厚度为8mm的5A12铝合金热轧坯料。通过本发明能够得到宽度为1200～1700mm的大规格5A12铝合金热轧板材坯料,该产品具有表面质量好、强度高、塑性好、坯料内部无气孔、缩孔等优点；从而改善了现有生产大规格5A12铝合金板材对设备要求高、热轧轧制技术复杂的问题。(The invention discloses a 5A12 aluminum alloy hot-rolled blank and a production method thereof. The method comprises the steps of taking a pure aluminum ingot and a pure magnesium ingot as raw materials, mixing and smelting, refining the obtained alloy liquid, standing after refining, and casting the alloy liquid obtained after standing to obtain an aluminum alloy ingot; carrying out three-stage homogenization treatment on the obtained 5A12 aluminum alloy cast ingot; then, milling the cast ingot, and then processing by adopting an acetic acid water and air combined impurity removal method; and after treatment, carrying out homogeneous heating, hot rough rolling and hot finish rolling on the cast ingot in sequence to finally obtain the 5A12 aluminum alloy hot rolling blank with the thickness of 8 mm. The large-size 5A12 aluminum alloy hot-rolled plate blank with the width of 1200-1700 mm can be obtained through the method, and the product has the advantages of good surface quality, high strength, good plasticity, no air holes or shrinkage holes in the blank and the like; therefore, the problems that the existing large-specification 5A12 aluminum alloy plate production has high equipment requirement and the hot rolling technology is complex are solved.)