JPS5762801A - Manufacture of steel material with homogeneous structure and less segregation - Google Patents

Manufacture of steel material with homogeneous structure and less segregation

Info

Publication number
JPS5762801A
JPS5762801A JP13825180A JP13825180A JPS5762801A JP S5762801 A JPS5762801 A JP S5762801A JP 13825180 A JP13825180 A JP 13825180A JP 13825180 A JP13825180 A JP 13825180A JP S5762801 A JPS5762801 A JP S5762801A
Authority
JP
Japan
Prior art keywords
rolling process
hot rolling
roll
theta
employing
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
JP13825180A
Other languages
Japanese (ja)
Inventor
Masuji Kumazawa
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 JP13825180A priority Critical patent/JPS5762801A/en
Publication of JPS5762801A publication Critical patent/JPS5762801A/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
    • B21B1/02—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
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/10—Roughness of roll surface

Landscapes

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

Abstract

PURPOSE:To break the harmful cast metallic structure included in a steel blank material in order to make the structure homogeneous, and to reduce the segregation of constituent metals, by employing a roll provided with a prescribed groove for carrying out a hot rolling process, and by employing a flat roll for carrying out a finish rolling process at the final stage. CONSTITUTION:At a continuous casting process or t a stage of blooming and hot rolling processes, a grooved roll is employed; in which, the grooe or a grooved-and- tongued face is prescribed with 0.7< aspect ratio N(=L/d)<=5, and 30 deg.< angular aperture theta<=136 deg.. The cross section of the groove is a trapezoid composed with bottom sides L, (l) and height (d); theta is the angular aperture, and P1, P2 are the axial pitch and the circumferential pitch. At the final stage of the hot rolling process, the finish rolling process is carried out with flat rolls arranged as the upper and lower work rolls. By the present constitution, the structure is made homogeneous, and a product with the least defect and the least anisotropy is obtained.
JP13825180A 1980-10-04 1980-10-04 Manufacture of steel material with homogeneous structure and less segregation Pending JPS5762801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13825180A JPS5762801A (en) 1980-10-04 1980-10-04 Manufacture of steel material with homogeneous structure and less segregation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13825180A JPS5762801A (en) 1980-10-04 1980-10-04 Manufacture of steel material with homogeneous structure and less segregation

Publications (1)

Publication Number Publication Date
JPS5762801A true JPS5762801A (en) 1982-04-16

Family

ID=15217585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13825180A Pending JPS5762801A (en) 1980-10-04 1980-10-04 Manufacture of steel material with homogeneous structure and less segregation

Country Status (1)

Country Link
JP (1) JPS5762801A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018130765A (en) * 2017-02-15 2018-08-23 新日鐵住金株式会社 Billet rolling method and rolling equipment
JP2019214065A (en) * 2018-06-13 2019-12-19 日本製鉄株式会社 Rolling equipment
JP2022549167A (en) * 2019-09-18 2022-11-24 マサチューセッツ インスティテュート オブ テクノロジー Systems, compositions and methods for producing sharp edges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018130765A (en) * 2017-02-15 2018-08-23 新日鐵住金株式会社 Billet rolling method and rolling equipment
JP2019214065A (en) * 2018-06-13 2019-12-19 日本製鉄株式会社 Rolling equipment
JP2022549167A (en) * 2019-09-18 2022-11-24 マサチューセッツ インスティテュート オブ テクノロジー Systems, compositions and methods for producing sharp edges

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