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CN104152762A 一种航空用7B50T7451铝合金预拉伸厚板的制造方法 无效 - 撤回

一种航空用7B50T7451铝合金预拉伸厚板的制造方法
摘要：
一种航空用7B50T7451铝合金预拉伸厚板的制造方法，它涉及一种铝合金板材的制造方法。本发明要解决现有铝合金板材存在强度、断后伸长率、断裂韧度、腐蚀性能和电导率均低，达不到航空用铝合金预拉伸厚板的使用要求的问题。制备方法：一、制备铝合金熔液；二、制备方铸锭；三、退火；四、制备铝合金方铸锭；五、制备板材坯料；六、加热；七、制备铝合金板材；八、切断；九、固溶处理及淬火；十、拉伸矫直；十一、时效处理；十二、锯切，得到航空用7B50T7451铝合金预拉伸厚板。本发明可获得一种航空用7B50T7451铝合金预拉伸厚板。
摘要（英）：

The invention discloses a method for manufacturing a 7B50T7451 aluminum alloy prestretching thick plate for aviation, and relates to a method for manufacturing an aluminum alloy plate. The problems that an existing aluminum alloy plate is low in strength, percentage elongation after fracture, fracture toughness, corrosion property and electrical conductivity, and cannot meet the use requirement of the aluminum alloy prestretching thick plate for the aviation. The method for manufacturing the 7B50T7451 aluminum alloy prestretching thick plate comprises the twelve steps of aluminum alloy melting liquid manufacturing, square cast ingot manufacturing, annealing, aluminum alloy square cast ingot manufacturing, plate billet manufacturing, heating, aluminum alloy plate manufacturing, cutting off, solution treatment and quenching, stretching straightening, aging treatment and saw cutting. The 7B50T7451 aluminum alloy prestretching thick plate for the aviation is obtained. According to the method, the 7B50T7451 aluminum alloy prestretching thick plate for the aviation can be obtained.

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