COLD ROLLING STEEL SHEET BEING EXCELLENT FOR DEEP DRAWABILITY AND FORMING METHOD

PURPOSE:To provide a forming method being excellent for the deep drawability in order to easily and stably produce in a time of pressing a deep drawing part used for an automobile, a furniture and an electric appliance. CONSTITUTION:Plural recess parts are provided on the surface of a steel sheet, a...

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Bibliographic Details
Main Authors ISHII YOSHIO, TEFUN MAKOTO, SUZUKI TAKAMASA
Format Patent
LanguageEnglish
Published 01.11.1994
Edition5
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:PURPOSE:To provide a forming method being excellent for the deep drawability in order to easily and stably produce in a time of pressing a deep drawing part used for an automobile, a furniture and an electric appliance. CONSTITUTION:Plural recess parts are provided on the surface of a steel sheet, and the summed volume of the recess parts is made over than 0.8X10 mum , the temperature of a punch shoulder part of the press die is made to the range of >=-10 deg.C to <=20 deg.C, and the temperature of the liquid tank of the die-less side relatively facing to the punch shoulder part is kept within the range of >=-10 deg.C to <=20 deg.C, further the temperature of the upper and lower, and either one side plate holding part is made to >=20 deg.C to <=150 deg.C than the temperature of the punch shoulder part, so the deep drawing can be easily and stably executed.
Bibliography:Application Number: JP19930096217