METHOD FOR MANUFACTURING MOLDED MEMBER

WIPO Patent Application WO/2017/150690

A1

The purpose of the present invention is to provide a method for manufacturing a molded member, whereby high precision of inside diameter roundness of a cylindrical body part is maintained even when the plate thickness of a raw material metal plate varies, and it is also possible to prevent adhesion, seizing, and the like of the raw material metal plate to a die for finish ironing. In the present invention, a molded member having a cylindrical body part and a flange part formed on an end part of the body part is manufactured by performing multistage drawing of a raw material metal plate. The multi-stage drawing includes: preliminary drawing for forming a preliminary body having a body part element from the raw material metal plate; at least one compressive drawing for forming a body part by drawing the body part element while applying a pressure-adjustable compressive force to the body part element, the compressive drawing being performed after the preliminary drawing; and at least one finish ironing for ensuring dimensional precision, the finish ironing being performed subsequent to the compressive drawing.

JPS6056437	[Title of the Invention] An iris diaphragm rigorous training can which comprises a surface treatment plate and sheet, and its manufacturing process
JP3794265	MANUFACTURING METHOD OF RESIN-COATED ALUMINUM SEAMLESS CAN BODY

NAKAMURA NAOFUMI (JP)
YAMAMOTO YUDAI (JP)

PCT/JP2017/008362

September 08, 2017

March 02, 2017

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NISSHIN STEEL CO LTD (JP)

B21D22/28; B21D24/10

WO2003035298A1

2003-05-01

JP2016000427A	2016-01-07
JPH11226661A	1999-08-24
JPS4928538A	1974-03-14

See also references of EP 3409394A4

SOGA, Michiharu et al. (JP)

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