JPS57112901A - Production of multi-grooved billet - Google Patents

Production of multi-grooved billet

Info

Publication number
JPS57112901A
JPS57112901A JP18568880A JP18568880A JPS57112901A JP S57112901 A JPS57112901 A JP S57112901A JP 18568880 A JP18568880 A JP 18568880A JP 18568880 A JP18568880 A JP 18568880A JP S57112901 A JPS57112901 A JP S57112901A
Authority
JP
Japan
Prior art keywords
passes
rolling
billets
width
grooved
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
JP18568880A
Other languages
Japanese (ja)
Inventor
Hisashi Nagahiro
Teruaki Tanaka
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP18568880A priority Critical patent/JPS57112901A/en
Publication of JPS57112901A publication Critical patent/JPS57112901A/en
Pending 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
    • B21B1/0815—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 from flat-rolled products, e.g. by longitudinal shearing
    • 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
    • B21B1/026—Rolling

Landscapes

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

Abstract

PURPOSE:To obtain multi-grooved billets having no surface flaws by applying screw-down in the width direction of a blank material during or prior to rolling of the blank material bloom with rolls. CONSTITUTION:A blank material 20 of a rectangular section is formed and rolled to multi-grooved billets connected with four pieces of billets with each other with rolls having passes 19, 19'. The width B of the material 20 is such that it does not go wider than the width W of the passes 19, 19' when rolled at the 1st pass. The material 20a provided with grooves 26 by the projecting parts 25 of the passes 19, 19' is rotated 90 deg. and is screwed down in the width B direction by the box passes 27, 27' recessed at the bottom faces of the passes in an arc shape. The material 20b obtained here is again rotated 90 deg. and is rolled by narrowing a gap 28 than before with the above-described passes 19, 19'. By the repetition of such rolling, desired four grooves of billets are obtained. The effect similar to that by the above-mentioned methods is also obtained by rolling the material 20 with passes 27, 27' then subjecting the same to rolling of the 1st pass with the passes 19, 19'.
JP18568880A 1980-12-29 1980-12-29 Production of multi-grooved billet Pending JPS57112901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18568880A JPS57112901A (en) 1980-12-29 1980-12-29 Production of multi-grooved billet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18568880A JPS57112901A (en) 1980-12-29 1980-12-29 Production of multi-grooved billet

Publications (1)

Publication Number Publication Date
JPS57112901A true JPS57112901A (en) 1982-07-14

Family

ID=16175120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18568880A Pending JPS57112901A (en) 1980-12-29 1980-12-29 Production of multi-grooved billet

Country Status (1)

Country Link
JP (1) JPS57112901A (en)

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