Tubular Rotary Component, Manufacturing Method Therefor, And Mold

Abstract: Provided is a method for manufacturing a tubular rotary component from a donut-shaped metal disc, wherein the generation of wrinkles or cracks due to a drawing process can be suppressed. This method for manufacturing a tubular rotary component 100B includes: an intermediate molding step in which the entirety of both surfaces of a donut-shaped metal disc 100 having a prescribed inner diameter D1 and outer diameter D2 are pressed by the respective tapered surfaces of a punch 10A and a die 20A provided with a prescribed taper to carry out bore-expansion drawing, thereby obtaining a frustoconical intermediate molded article 100A; and a final molding step in which the intermediate molded article 100A is pressed by a punch 10B and a die 20B having a desired shape to carry out bore-expansion drawing again, thereby obtaining a tubular rotary component 100B.

Patent Information

Application #

Filing Date

06 August 2021

Publication Number

33/2021

Publication Type

INA

Invention Field

MECHANICAL ENGINEERING

Status

Email

afzal@hasanandsingh.com

Parent Application

Patent Number

Legal Status

Grant Date

2023-09-29

Renewal Date

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. SUGAMA Atsushi

c/o NIPPON STEEL NISSHIN CO., LTD., 4-1, Marunouchi 3-chome, Chiyoda-ku, Tokyo 1008366

2. KITORA Takatsugu

c/o NIPPON STEEL NISSHIN CO., LTD., 4-1, Marunouchi 3-chome, Chiyoda-ku, Tokyo 1008366

Specification

Documents

Application Documents

#	Name	Date
1	202147035624-STATEMENT OF UNDERTAKING (FORM 3) [06-08-2021(online)].pdf	2021-08-06
2	202147035624-REQUEST FOR EXAMINATION (FORM-18) [06-08-2021(online)].pdf	2021-08-06
3	202147035624-PROOF OF RIGHT [06-08-2021(online)].pdf	2021-08-06
4	202147035624-PRIORITY DOCUMENTS [06-08-2021(online)].pdf	2021-08-06
5	202147035624-POWER OF AUTHORITY [06-08-2021(online)].pdf	2021-08-06
6	202147035624-FORM 18 [06-08-2021(online)].pdf	2021-08-06
7	202147035624-FORM 1 [06-08-2021(online)].pdf	2021-08-06
8	202147035624-DRAWINGS [06-08-2021(online)].pdf	2021-08-06
9	202147035624-DECLARATION OF INVENTORSHIP (FORM 5) [06-08-2021(online)].pdf	2021-08-06
10	202147035624-COMPLETE SPECIFICATION [06-08-2021(online)].pdf	2021-08-06
11	202147035624.pdf	2021-10-19
12	202147035624-FORM 3 [24-01-2022(online)].pdf	2022-01-24
13	202147035624-FER.pdf	2022-02-24
14	202147035624-Certified Copy of Priority Document [11-05-2022(online)].pdf	2022-05-11
15	202147035624-Information under section 8(2) [18-08-2022(online)].pdf	2022-08-18
16	202147035624-FORM 3 [18-08-2022(online)].pdf	2022-08-18
17	202147035624-FER_SER_REPLY [18-08-2022(online)].pdf	2022-08-18
18	202147035624-DRAWING [18-08-2022(online)].pdf	2022-08-18
19	202147035624-CORRESPONDENCE [18-08-2022(online)].pdf	2022-08-18
20	202147035624-CLAIMS [18-08-2022(online)].pdf	2022-08-18
21	202147035624-ABSTRACT [18-08-2022(online)].pdf	2022-08-18
22	202147035624-FORM 3 [16-08-2023(online)].pdf	2023-08-16
23	202147035624-PatentCertificate29-09-2023.pdf	2023-09-29
24	202147035624-IntimationOfGrant29-09-2023.pdf	2023-09-29

Search Strategy

1	SEARCH202147035624E_22-02-2022.pdf