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-gallingInfo
- 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
Links
Landscapes
- 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
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) |
-
1980
- 1980-04-14 JP JP4892080A patent/JPS56144802A/en active Pending
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