The invention relates to the technical field of aluminum alloy profiles, in particular to a friction stir welding aluminum alloy side wall profile and application thereof. The friction stir welding aluminum alloy side wall profile comprises the following chemical components in percentage by mass: 0.66-0.76% of Si, less than or equal to 0.22% of Fe, less than or equal to 0.18% of Cu, less than or equal to 0.38% of Mn, 0.48-0.58% of Mg, less than or equal to 0.25% of Cr, less than or equal to 0.10% of Zn, less than or equal to 0.10% of Ti and the balance of Al and inevitable impurities. The friction stir welding aluminum alloy side wall profile is prepared from a cast rod through whole-process full-section isothermal extrusion, on-line solution treatment, tension stretching and artificial aging. Aiming at the higher requirement of friction stir welding on the dimensional accuracy of an aluminum alloy material, a high-strength mold is adopted, and the deformation of a casting rod in the production process is controlled through isothermal extrusion and online solution treatment of the whole section in the whole process, so that the upper and lower width difference of a welding joint of the finally obtained aluminum alloy profile is controlled within 0.3 mm, and the welding quality of the aluminum alloy profile is improved. The thickness precision of the aluminum alloy sections can reach +/-0.5 mm, and the height difference of the two aluminum alloy sections is within 0.3 mm.
本发明涉及铝合金型材技术领域,具体涉及一种搅拌摩擦焊铝合金侧墙型材及其应用。搅拌摩擦焊铝合金侧墙型材的化学组成及质量百分含量为Si:0.66%~0.76%,Fe≤0.22%,Cu≤0.18%,Mn≤0.38%,Mg:0.48%~0.58%,Cr≤0.25%,Zn≤0.10%,Ti≤0.10%,余量为Al和不可避免的杂质;搅拌摩擦焊铝合金侧墙型材由铸棒经全过程全断面的等温挤压、在线固溶处理、张力拉伸和人工时效制备。本发明针对搅拌摩擦焊对铝合金材料的尺寸精度所提出的更高要求,采用高强度模具,通过全过程全断面的等温挤压及在线固溶处理,控制铸棒在生产过程中的变形量,使最终得到的铝合金型材焊接接头上下宽度差控制在0.3mm以内,铝合金型材的厚度精度可达±0.5mm,两块铝合金型材的高度差在0.3mm以内。
Friction stir welding aluminum alloy side wall profile and application thereof
一种搅拌摩擦焊铝合金侧墙型材及其应用
2023-06-09
Patent
Electronic Resource
Chinese
IPC: | B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING , Herstellen von Blechen, Metalldraht, -stangen, -rohren Metallprofilen oder Halbzeugen auf andere Weise als durch Walzen / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen |
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