12-05-2016 дата публикации
Номер: US20160129853A1
Принадлежит:
The invention relates to a method of manufacturing an outside decorative trim strip of a motor vehicle, such as window surrounds or body shell trim, made of aluminum alloy, by shaping and brightening of a plate or strip made by vertical continuous casting of an alloy slab of series AA5xxx of high purity, homogenization-heating of the slab, hot rolling, cooling, cold rolling with intermediate annealing in a continuous tunnel furnace, or holding between the solvus temperature and the alloy burning temperature typically for 3 seconds to 5 minutes, quenching in air or water, possible annealing at a temperature of 100 to 200° C. 1. Manufacturing process for a plate or strip for outside decorative trims for motor vehicles made of aluminum alloy , optionally comprising one or more window surrounds or body shell strips , said process comprising:Direct Chill (DC) casting of a slab made of an alloy of the AA5xxx series of high purity, optionally a composition such that (as a percentage by weight):Mg≦1.1, Cu≦0.10, other elements≦0.30, the rest aluminumHeating the slab to a temperature of 480 to 530° C. for at least 1 h, Hot rolling and cooling,Cold rolling including intermediate annealing in a continuous tunnel furnace, or holding between solvus temperature and alloy incipient melting temperature optionally for 3 seconds to 5 minutes, followed by quenching in air or water.2. Method according to further comprising a final anneal at a temperature of 100 to 200° C. for a time equivalent to 3 to 15 h at 170° C.3. Method according to wherein the composition of the slab is of type AA5657 or (as a percentage by weight):Si:≦0.08, Fe:≦0.10, Cu:≦0.10, Mn:≦0.03, Mg: 0.6-1.0, Zn:≦0.05, Ti:≦0.020, other elements <0.05 each, and <0.15 in total, rest aluminum.4. Method according to wherein the composition of the slab is of type AA5205 or (as a percentage by weight):Si:≦0.15, Fe:≦0.7, Cu: 0.03-0.10, Mn:≦0.10, Mg: 0.6 - 1.0, Zn:≦0.05, Ti: ≦0.05, other elements <0.05 each, and <0.15 in total, ...
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