JPS56160805A - Manufacture of cold rolled steel sheet - Google Patents

Manufacture of cold rolled steel sheet

Info

Publication number
JPS56160805A
JPS56160805A JP6561380A JP6561380A JPS56160805A JP S56160805 A JPS56160805 A JP S56160805A JP 6561380 A JP6561380 A JP 6561380A JP 6561380 A JP6561380 A JP 6561380A JP S56160805 A JPS56160805 A JP S56160805A
Authority
JP
Japan
Prior art keywords
roll
bright
steel sheet
cold rolled
rolled steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6561380A
Other languages
Japanese (ja)
Inventor
Hiroyuki Eto
Shinzo Tanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP6561380A priority Critical patent/JPS56160805A/en
Publication of JPS56160805A publication Critical patent/JPS56160805A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture a cold rolled steel sheet free from surface flaws with an improved yield, by applying a skin pass rolling work simultaneously to both sides of a cold rolled steel sheet with a bright roll for one side and a dull roll for another side, wherein the surface roughnesses of the bright roll and the dull roll are respectively prescribed.
CONSTITUTION: A skin pass rolling work is applied to a cold rolled steel sheet, both sides at the same time, that is, one side by a bright roll (the upper roll, for example) and another side by a dull roll (the lower roll, for example). The bright surface of the bright roll is finished to <1.0μm Hmax surface roughness and the surface of the dull roll is finished to ≥3μm Hmax surface roughness; by using these rolls a bright steel sheet free from the surface flaws is manufactured. The present method is extremely easily practicable, and prevents the generation of surface flaws which is considered as a fatal deficiency of manufacture of a bright steel sheet. The dull pattern transferred to the rear side of the sheet displays an effect of improving a press formability.
COPYRIGHT: (C)1981,JPO&Japio
JP6561380A 1980-05-16 1980-05-16 Manufacture of cold rolled steel sheet Pending JPS56160805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6561380A JPS56160805A (en) 1980-05-16 1980-05-16 Manufacture of cold rolled steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6561380A JPS56160805A (en) 1980-05-16 1980-05-16 Manufacture of cold rolled steel sheet

Publications (1)

Publication Number Publication Date
JPS56160805A true JPS56160805A (en) 1981-12-10

Family

ID=13292040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6561380A Pending JPS56160805A (en) 1980-05-16 1980-05-16 Manufacture of cold rolled steel sheet

Country Status (1)

Country Link
JP (1) JPS56160805A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591636A (en) * 1982-06-26 1984-01-07 Nisshin Steel Co Ltd Manufacture of bright painted plated steel sheet
JPS6075368A (en) * 1983-09-30 1985-04-27 Nisshin Steel Co Ltd Manufacture of painted steel plate having excellent brilliance and corrosion resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591636A (en) * 1982-06-26 1984-01-07 Nisshin Steel Co Ltd Manufacture of bright painted plated steel sheet
JPS6075368A (en) * 1983-09-30 1985-04-27 Nisshin Steel Co Ltd Manufacture of painted steel plate having excellent brilliance and corrosion resistance

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