JPS56144802A - Manufacture of hot rolled steel sheet having good resistance to die-galling - Google Patents

Manufacture of hot rolled steel sheet having good resistance to die-galling

Info

Publication number
JPS56144802A
JPS56144802A JP4892080A JP4892080A JPS56144802A JP S56144802 A JPS56144802 A JP S56144802A JP 4892080 A JP4892080 A JP 4892080A JP 4892080 A JP4892080 A JP 4892080A JP S56144802 A JPS56144802 A JP S56144802A
Authority
JP
Japan
Prior art keywords
steel sheet
galling
die
hot 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
JP4892080A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Yashiki
Seiichi Sugisawa
Toshio Kuramachi
Mitsuaki Nomura
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 JP4892080A priority Critical patent/JPS56144802A/en
Publication of JPS56144802A publication Critical patent/JPS56144802A/en
Pending legal-status Critical Current

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  • Metal Rolling (AREA)

Abstract

PURPOSE: To manufacture a hot rolled steel sheet having good resistance to the die- galling, by regulating the surface roughness of the pickled steel sheet through the skin pass process to be carried out by the dull-surfaced roll, and by increasing the surface hardness of the steel sheet.
CONSTITUTION: The surface scale of the hot rolled steel sheet is removed through the pickling process. The surface roughness of the steel sheet is then regulated by the skin pass process to be carried out by the dull-surfaced roll, and besides, the surface hardness of the steel sheet is increased. The skin pass roll is a light roll and its surface roughness is made ≥ about 2.5μm; by employing thus prepared dull- surfaced roll, the surface roughness of the steel sheet is regulated to ≥ about 1.3μm. Hereby, even if thus obtained steel sheet is subjected to a continuous deep drawing work, a shape product of good quality, hardly suffering from the die-galling, can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP4892080A 1980-04-14 1980-04-14 Manufacture of hot rolled steel sheet having good resistance to die-galling Pending JPS56144802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4892080A JPS56144802A (en) 1980-04-14 1980-04-14 Manufacture of hot rolled steel sheet having good resistance to die-galling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4892080A JPS56144802A (en) 1980-04-14 1980-04-14 Manufacture of hot rolled steel sheet having good resistance to die-galling

Publications (1)

Publication Number Publication Date
JPS56144802A true JPS56144802A (en) 1981-11-11

Family

ID=12816680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4892080A Pending JPS56144802A (en) 1980-04-14 1980-04-14 Manufacture of hot rolled steel sheet having good resistance to die-galling

Country Status (1)

Country Link
JP (1) JPS56144802A (en)

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