公开(公告)号：US10807142B2

公开(公告)日：2020-10-20

申请号：US15528941

申请日：2015-04-21

Applicant: UACJ Corporation

Inventor： Mineo Asano

IPC: B21D26/021 ,  B21D26/02 ,  C21D11/00 ,  C22C21/02 ,  C22C21/08

Abstract: A hot blow forming method for the aluminum alloy sheet carries out a hot blow forming to an aluminum alloy sheet using a first metal mold being a female mold for forming having a protruding surface portion on an inside surface thereof and a second metal mold for gas introduction. Immediately prior to the hot blow forming, a temperature (T1) of the aluminum alloy sheet and a temperature (T2) of the first metal mold satisfy a relation (T1)-(T2)≥30° C. and the temperature (T2) is equal to or higher than 400° C. In the hot blow forming, the aluminum alloy sheet is made to be brought into contact with at least a part of the protruding surface portion of the first metal mold within 30 seconds from a start of the gas introduction from the second metal mold.

公开(公告)号：US10415118B2

公开(公告)日：2019-09-17

申请号：US14407275

申请日：2013-06-06

Applicant: UACJ Corporation

Inventor： Yusuke Yamamoto ,  Mineo Asano

IPC: C22C21/06 ,  C22C21/00 ,  C22C21/08 ,  B22D21/04 ,  C22F1/00 ,  C22F1/04 ,  B62D29/00 ,  H05K5/04 ,  B22D27/02

Abstract: An aluminum alloy plate includes peritectic elements and Mg. Wherein plate thickness of the plate is represented as t (mm), a range within ±0.01×t from t/2 is represented as a central portion, a range within ±0.01×t from t/4 is represented as a quarter portion, and a range within 0.02×t from a top surface in the plate thickness direction is represented as a superficial portion, concentration of the peritectic elements is such that a concentration difference between in the central portion and in the quarter portion, and a concentration difference between in the central portion and in the superficial portion are 0.04% (mass %) or less. In addition, concentration of the Mg is such that a concentration difference between in the central portion and in the quarter portion, and a concentration difference between in the central portion and in the superficial portion of the plate thickness are 0.4% or less.