公开(公告)号：US20210156016A1

公开(公告)日：2021-05-27

申请号：US17104265

申请日：2020-11-25

Applicant: SHOWA DENKO K.K.

Inventor： Takumi MARUYAMA

IPC: C22F1/00 ,  B21J5/02 ,  B21K7/12 ,  C22F1/04

Abstract: Provided is a production method of an aluminum alloy forging for an automobile suspension having a disturbance affectable surface with not excessively notch-sensitive. The production method includes, as heat treatment processes, a solution heat treatment process, a quenching process, and an artificial age hardening process. The quenching process is performed by bringing a lower surface of the aluminum forging to be disposed on a ground side when assembled to the automobile into contact with water before an upper surface of the aluminum forging opposite to the lower surface is brought into contact with the water.

公开(公告)号：US20210087654A1

公开(公告)日：2021-03-25

申请号：US17111881

申请日：2020-12-04

Applicant: HONDA MOTOR CO., LTD. ,  SHOWA DENKO K.K.

Inventor： Takumi MARUYAMA ,  Masashi KAWAKAMI ,  Takahiro KOJIMA ,  Ryuta MOTANI

IPC: C22C21/02 ,  C22F1/043

Abstract: Provided is an aluminum alloy material with high strength and low thermal expansion coefficient even under high temperature environments. An aluminum alloy material according to the present invention has a composition consisting of: Si: 13 mass % to 15 mass %, Cu: 2.0 mass % to 6.0 mass %, Mg: 0.2 mass % to 1.5 mass %, Fe: 0.4 mass % to 0.8 mass %, Ni: 0.2 mass % to 0.8 mass %, P: 0.005 mass % to 0.015 mass %, and the balance being Al and inevitable impurities.

公开(公告)号：US20230416878A1

公开(公告)日：2023-12-28

申请号：US18033880

申请日：2021-10-21

Applicant: SHOWA DENKO K.K.

Inventor： Takumi MARUYAMA

IPC: C22C21/02

CPC classification number: C22C21/02

Abstract: An aluminum alloy for automobile wheels which contains Si in a range of 8.0% to 11.5% by mass, Cu in a range of 0.7% to 1.2% by mass, Mg in a range of 0.2% to 0.6% by mass, Mn in a range of 0.30% to 0.60% by mass, Fe in a range of 0.10% to 0.30% by mass, Cr in a range of 0.01% to 0.03% by mass, and balance Al with inevitable impurities. The aluminum alloy does not contain, per 1182 μm2, two or more crystallized products containing 1% by mass or more of Cu and having a circle equivalent diameter exceeding 5 μm, does not contain, per 1182 μm2, two or more Cr-containing intermetallic compounds having a length of 8 μm or more, and does not contain, per 4726 μm2, two or more primary crystal Si particles having a circle equivalent diameter exceeding 10 μm.

公开(公告)号：US20190247915A1

公开(公告)日：2019-08-15

申请号：US16275503

申请日：2019-02-14

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi SUZUYAMA ,  Takumi MARUYAMA

IPC: B22D21/00

CPC classification number: B22D21/007

Abstract: Provided is a method of producing an Al alloy cast material capable of properly adjusting an additive amount of Ti. The present invention is directed to a method of producing an Al alloy cast material in which an Al alloy molten metal supplied to a casting machine through a molten metal passage is solidified by the casting machine to produce an Al alloy cast material. The production method of the present invention includes a primary Ti-addition step of preliminarily adding Ti to an Al alloy molten metal before flowing through a molten metal passage and a secondary Ti-addition step of adding Ti to an Al alloy molten metal flowing through a molten metal passage by a feeder.

公开(公告)号：US20210147969A1

公开(公告)日：2021-05-20

申请号：US16952561

申请日：2020-11-19

Applicant: SHOWA DENKO K.K.

Inventor： Takumi MARUYAMA

IPC: C22F1/04 ,  C22C21/00 ,  C22F1/00

Abstract: Provided is a production method of an aluminum alloy forging for an automobile suspension having a disturbance affectable surface with not excessively notch-sensitive. The production method includes, as heat treatment processes, a solution heat treatment process, a quenching process, and an artificial age hardening process. The quenching process is performed by bringing a lower surface of the aluminum forging to be disposed on a ground side when assembled to the automobile into contact with water after an upper surface of the aluminum forging opposite to the lower surface is brought into contact with the water.

公开(公告)号：US20180340243A1

公开(公告)日：2018-11-29

申请号：US15985880

申请日：2018-05-22

Applicant: SHOWA DENKO K.K.

Inventor： Takumi MARUYAMA

IPC: C22C21/02 ,  C22F1/043

Abstract: Provided is an aluminum alloy material with high strength and low thermal expansion coefficient even under high temperature environments. An aluminum alloy material according to the present invention has a composition consisting of: Si: 13 mass % to 15 mass %, Cu: 2.0 mass % to 6.0 mass %, Mg: 0.2 mass % to 1.5 mass %, Fe: 0.4 mass % to 0.8 mass %, Ni: 0.2 mass % to 0.8 mass %, P: 0.005 mass % to 0.015 mass %, and the balance being Al and inevitable impurities.