公开(公告)号：US5480498A

公开(公告)日：1996-01-02

申请号：US246653

申请日：1994-05-20

申请人： Armand J. Beaudoin ,  J. Daniel Bryant ,  Alan J. Janousek ,  Rajeev G. Kamat ,  H. Edwin Oliver ,  Robert M. Ramage

发明人： Armand J. Beaudoin ,  J. Daniel Bryant ,  Alan J. Janousek ,  Rajeev G. Kamat ,  H. Edwin Oliver ,  Robert M. Ramage

IPC分类号： C22F1/04

CPC分类号： C22F1/04

摘要： A method of producing aluminum alloy sheet product includes casting a slab, homogenizing the cast slab, and hot rolling the homogenized slab to provide an intermediate gauge product. The temperature and other operating parameters of the hot rolling process are controlled so that the temperature of the intermediate gauge product exiting the hot rolling step is between about 500.degree. F. and 650.degree. F. Preferably, the temperature does not exceed 575.degree. F. The intermediate gauge product is then subjected to a cold reduction of 45% to 70%, annealed, and cold rolled to final gauge. The combination of controlling the hot rolling to provide a desired exit temperature of the intermediate gauge product and annealing prior to cold rolling to final gauge minimizes or eliminates the appearance of ridging or roping line defects in the aluminum sheet product when subjected to further straining in a forming or stamping operation. An improved aluminum alloy sheet product is produced having a superior surface finish for use in automotive components such as hoods or deck lids.

摘要翻译： 制造铝合金板材的方法包括铸造板坯，均质铸造板坯，以及热轧均质板坯以提供中间量产品。 控制热轧工序的温度等操作参数，使得离开热轧工序的中间规格产品的温度在约500°F至650°F之间。优选温度不超过575°F。 然后将中等规格产品进行45％至70％的冷轧，退火，并冷轧至最终规格。 控制热轧以提供中等规格产品的期望出口温度和在冷轧之前退火至最终规格的组合使得当铝板产品中的进一步应变进一步应变时，铝板产品中的皱纹或线条缺陷的出现最小化或消除 成型或冲压作业。 制造改进的铝合金板产品，其具有用于汽车部件如罩或甲板盖的优异的表面光洁度。

公开(公告)号：US06423164B1

公开(公告)日：2002-07-23

申请号：US08560138

申请日：1995-11-17

申请人： J. Daniel Bryant ,  Robert M. Ramage ,  Armand J. Beaudoin ,  Hidetoshi Uchida ,  Hideo Yoshida

发明人： J. Daniel Bryant ,  Robert M. Ramage ,  Armand J. Beaudoin ,  Hidetoshi Uchida ,  Hideo Yoshida

IPC分类号： C22F104

CPC分类号： C22F1/05

摘要： A method of producing aluminum alloy sheet product includes casting a slab or ingot, homogenizing the cast slab, and hot rolling the homogenized slab to provide an intermediate gauge product. The temperature and other operating parameters of the hot rolling process are controlled so that the temperature of the ingot at the beginning of hot rolling is maintained at a temperature between 925° F. (496° C.) and 1025° F. (552° C.), and the temperature of the intermediate gauge product exiting the hot rolling step is between about 500° F. (260° C.) and 600° F. (316° C.). The intermediate gauge product is then subjected to a cold reduction of 45% to 70%, annealed, and cold rolled to final gauge. The combination of controlling the hot rolling to provide the desired hot line entry temperature and the desired exit temperature of the intermediate gauge product and annealing prior to cold rolling to final gauge minimizes or eliminates the appearance of ridging line defects in the aluminum sheet product when the product is subjected to further straining in a forming operation. An improved aluminum alloy sheet product is produced having a superior surface finish for use in automotive components while maintaining a higher strength than that of the prior art.

摘要翻译： 制造铝合金板材的方法包括铸造板坯或铸锭，使铸坯均质化，并且对均质板进行热轧以提供中间量产品。 控制热轧工艺的温度和其他工作参数，使得热轧开始时的锭的温度保持在925°F（496℃）和1025°F之间的温度（552° C.），并且离开热轧步骤的中间产品的温度在约500°F（260℃）和600°F（316℃）之间。 然后将中等规格产品进行45％至70％的冷轧，退火，并冷轧至最终规格。 控制热轧以提供期望的热线入口温度和中等规格产品的期望出口温度和在冷轧之前退火至最终规格的组合可以最小化或消除铝板产品中的皱纹线缺陷的出现， 产品在成型操作中进一步变形。 制造改进的铝合金板材产品，其具有优于用于汽车部件的表面光洁度，同时保持比现有技术更高的强度。