JPS5781903A - Production of rough shape slab for asymmetrical shape steel - Google Patents

Production of rough shape slab for asymmetrical shape steel

Info

Publication number
JPS5781903A
JPS5781903A JP15685880A JP15685880A JPS5781903A JP S5781903 A JPS5781903 A JP S5781903A JP 15685880 A JP15685880 A JP 15685880A JP 15685880 A JP15685880 A JP 15685880A JP S5781903 A JPS5781903 A JP S5781903A
Authority
JP
Japan
Prior art keywords
passes
slab
rough
shape
rolling
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
JP15685880A
Other languages
Japanese (ja)
Other versions
JPS5942564B2 (en
Inventor
Hiroshi Kubo
Sadao Hokari
Mitsuharu Masuda
Minoru Baba
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 JP15685880A priority Critical patent/JPS5942564B2/en
Publication of JPS5781903A publication Critical patent/JPS5781903A/en
Publication of JPS5942564B2 publication Critical patent/JPS5942564B2/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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088—H- or I-sections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To prevent the generation of overlap flaws in the joined part of a lower flange and a web by rolling a flat slab in a width direction to form a dog bone, and rolling the same with special guided passes then rolling this to an asymmetrical shape with rough molding finish passes. CONSTITUTION:A flat slab 1 is screwed down broadside by box type passes 2, 2', to an intermediate rough shape steel having a dog bone. This is then rotated 90 deg., after which it is rolled by using guided passes 7, 7'. In the passes 7, 7', the taper angle theta of the inner side of the lower flange part is set at 1.3-1.8theta s, with respect to rough molding finish passes 4, 4', the depth D at 1.5-2.5Ds, the thickness T at 0.9-1.1Ts, and the upper flange length F at a 0.7-1.0Fs range. The other dimensional shapes are approximately the same as those of the passes 4, 4'. After the slab is rolled with such passes 7, 7', it is roughly molded and finished to a rough shaped steel slab having an asymmetarical shape with the passes 4, 4'.
JP15685880A 1980-11-07 1980-11-07 Manufacturing method of rough shaped steel billet for asymmetric shaped steel Expired JPS5942564B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15685880A JPS5942564B2 (en) 1980-11-07 1980-11-07 Manufacturing method of rough shaped steel billet for asymmetric shaped steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15685880A JPS5942564B2 (en) 1980-11-07 1980-11-07 Manufacturing method of rough shaped steel billet for asymmetric shaped steel

Publications (2)

Publication Number Publication Date
JPS5781903A true JPS5781903A (en) 1982-05-22
JPS5942564B2 JPS5942564B2 (en) 1984-10-16

Family

ID=15636913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15685880A Expired JPS5942564B2 (en) 1980-11-07 1980-11-07 Manufacturing method of rough shaped steel billet for asymmetric shaped steel

Country Status (1)

Country Link
JP (1) JPS5942564B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110665962A (en) * 2019-08-30 2020-01-10 河北津西钢板桩型钢科技有限公司 Pass system and rolling method of narrow-flange asymmetric steel rail beam hot rolling mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6121039U (en) * 1984-07-12 1986-02-06 株式会社東芝 Automatic cassette loading device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110665962A (en) * 2019-08-30 2020-01-10 河北津西钢板桩型钢科技有限公司 Pass system and rolling method of narrow-flange asymmetric steel rail beam hot rolling mill

Also Published As

Publication number Publication date
JPS5942564B2 (en) 1984-10-16

Similar Documents

Publication Publication Date Title
NO20012354D0 (en) Method of preparing a profile with different wall thickness
JPS5781903A (en) Production of rough shape slab for asymmetrical shape steel
CA2012363A1 (en) Continuous casting plant for casting beam blanks
ES8401868A1 (en) Shaped blanks, methods for their production and improvements to the universal rolling of rails
JPS5577911A (en) Edging mill
JPS57124503A (en) Production of roughly-shaped steel for shape steel
JPS5570420A (en) Forming method for thick walled uo steel pipe
JPS6483302A (en) Manufacture of h-shape steel
JPS5630003A (en) Manufacture of beam blank for h-beam from flat slab
JPS561203A (en) Manufacture of rolled thick plate
JPS5575805A (en) Skew rolling method for plate
JPS5630008A (en) Rolling method for hot strip
JPS5768202A (en) Manufacture of rough shaped steel billet for asymmetric
JPS5656704A (en) Forming method for rough shaped steel billet
JPS57139402A (en) Production of blank shape steel for shape steel
JPS57152430A (en) Cooling method for obtaining steel plate of reduced hardness irregularity in thickness direction
JPS56165503A (en) Rolling method with controlled draft percentage
JPS5443860A (en) Rolling method for h-beam
JPS5752502A (en) Rolling method for steel angle with unequal side and thickness
JPS57142701A (en) Production of wide flange beam using flat slab as blank material
JPS5729808A (en) Hollow connecting rod made of steel plate for car
JPS5711702A (en) Forming method for rough shaped billet
JPS5530334A (en) Production of circular flange h-shape steel
JPS5762801A (en) Manufacture of steel material with homogeneous structure and less segregation
JPS55117501A (en) Broadside rolling method for metallic slab