JPS5584202A - Surface cracking suppressing method of slab in hot rolling - Google Patents

Surface cracking suppressing method of slab in hot rolling

Info

Publication number
JPS5584202A
JPS5584202A JP15666878A JP15666878A JPS5584202A JP S5584202 A JPS5584202 A JP S5584202A JP 15666878 A JP15666878 A JP 15666878A JP 15666878 A JP15666878 A JP 15666878A JP S5584202 A JPS5584202 A JP S5584202A
Authority
JP
Japan
Prior art keywords
slab
rolling
surface cracking
hot rolling
suppressing method
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.)
Granted
Application number
JP15666878A
Other languages
Japanese (ja)
Other versions
JPS5852443B2 (en
Inventor
Hiroo Suzuki
Satoru Nishimura
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
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP53156668A priority Critical patent/JPS5852443B2/en
Publication of JPS5584202A publication Critical patent/JPS5584202A/en
Publication of JPS5852443B2 publication Critical patent/JPS5852443B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To effectively suppress surface cracking by reheating and rolling a slab after cooling the slab once down to the specified temperature in the cooling process in succession to melting and solidifying in direct feed rolling, etc. of the slab. CONSTITUTION:In direct feed rolling or hot charge rolling of a slab, the slab is once cooled down to right below the Ar1 point in the cooling process in succession to melting and solidifying, whereby harmful deposits are made harmless. Next, this slab is reheated and rolled. Thereby the slab surface cracking in hot rolling may be effectively suppressed.
JP53156668A 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling Expired JPS5852443B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53156668A JPS5852443B2 (en) 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53156668A JPS5852443B2 (en) 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling

Publications (2)

Publication Number Publication Date
JPS5584202A true JPS5584202A (en) 1980-06-25
JPS5852443B2 JPS5852443B2 (en) 1983-11-22

Family

ID=15632683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53156668A Expired JPS5852443B2 (en) 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling

Country Status (1)

Country Link
JP (1) JPS5852443B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153829A (en) * 1983-02-18 1984-09-01 Nippon Steel Corp Manufacture of low carbon steel sheet with superior press workability
JPS59189001A (en) * 1983-04-08 1984-10-26 Sumitomo Electric Ind Ltd Method for rolling hot billet by direct feeding
JP2020066047A (en) * 2018-10-26 2020-04-30 日本製鉄株式会社 Manufacturing method of steel piece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52105520A (en) * 1976-03-02 1977-09-05 Nippon Steel Corp Continuous casting and continuous hot rolling of aluminium-killed stee l
JPS5358426A (en) * 1976-11-05 1978-05-26 Nippon Steel Corp Production of hot rolled steel sheet for working

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52105520A (en) * 1976-03-02 1977-09-05 Nippon Steel Corp Continuous casting and continuous hot rolling of aluminium-killed stee l
JPS5358426A (en) * 1976-11-05 1978-05-26 Nippon Steel Corp Production of hot rolled steel sheet for working

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153829A (en) * 1983-02-18 1984-09-01 Nippon Steel Corp Manufacture of low carbon steel sheet with superior press workability
JPH0587563B2 (en) * 1983-02-18 1993-12-17 Nippon Steel Corp
JPS59189001A (en) * 1983-04-08 1984-10-26 Sumitomo Electric Ind Ltd Method for rolling hot billet by direct feeding
JPH0428441B2 (en) * 1983-04-08 1992-05-14 Sumitomo Electric Industries
JP2020066047A (en) * 2018-10-26 2020-04-30 日本製鉄株式会社 Manufacturing method of steel piece

Also Published As

Publication number Publication date
JPS5852443B2 (en) 1983-11-22

Similar Documents

Publication Publication Date Title
JPS52105520A (en) Continuous casting and continuous hot rolling of aluminium-killed stee l
AU542104B2 (en) Hot forming metals prone to crack during rolling
JPS5584202A (en) Surface cracking suppressing method of slab in hot rolling
JPS5584203A (en) Surface cracking suppressing method of slab at hot rolling
JPS5584201A (en) Surface cracking suppressing method of slab at hot rolling
JPS566703A (en) Hot rolling method for steel billet
JPS55144307A (en) Edge crack preventing method of plate
JPS5588903A (en) Manufacture of hot coil of continuously casting slab for stainless steel by direct feed rolling
JPS53138961A (en) Carrying and treating apparatus of casting slab for continuous casting equipment
JPS52126607A (en) Preheating of material for hot rolling
JPS53135806A (en) Improving method for quality in direct rolling
JPS5511155A (en) Continuous annealing process for cold rolled hoop
JPS54112364A (en) Roll for sendzimir mill and its heat treating method
JPS569001A (en) Direct feed rolling method
JPS5577901A (en) Preventing method for surface cracking of billet in hot rolling pass
JPS5514174A (en) Production of cold rolled steel plate
JPS5437050A (en) Method of producing cold rolled steel plate
JPS53109830A (en) Welding method for prevention of reheating crack
JPS55106629A (en) Hot leveling method of strip
JPS542219A (en) Heat treating method for alloy 800 seamless pipe formed from centrifugal cast pipe as rough pipe
JPS5579827A (en) Manufacture of copper-containing steel having no surface flaw
JPS56139278A (en) Hot rolling method of stainless steel billet by continuous casting method
JPS54124864A (en) Leveler-incorporated cooling method for steel plate and apparatus therefor
JPS52123920A (en) Production of high-ductility high-yield steel
JPS5220311A (en) Method of shearing a long slab and apparatus therefore