JPS57100804A - Production of rough shape ingot for asymmetrical shape steel - Google Patents

Production of rough shape ingot for asymmetrical shape steel

Info

Publication number
JPS57100804A
JPS57100804A JP17792480A JP17792480A JPS57100804A JP S57100804 A JPS57100804 A JP S57100804A JP 17792480 A JP17792480 A JP 17792480A JP 17792480 A JP17792480 A JP 17792480A JP S57100804 A JPS57100804 A JP S57100804A
Authority
JP
Japan
Prior art keywords
ingot
shape
asymmetrical
rough
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
Application number
JP17792480A
Other languages
Japanese (ja)
Inventor
Hiroshi Kubo
Mutsuo Mizusawa
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 JP17792480A priority Critical patent/JPS57100804A/en
Publication of JPS57100804A publication Critical patent/JPS57100804A/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
    • B21B1/088—H- or I-sections

Abstract

PURPOSE:To efficiently produce rough shape ingot for asymmetrical shape steel economically by forming the shape of a flat ingot properly asymmetrically in accordance with the asymmetrical shape of a desired rough shape ingot prior to the formation process of wide broadside screw-down. CONSTITUTION:A flat ingot 1 is locally worked in the central part on one side in such a way that its end parts form a proper shape in accordance with the shape of a rough shape ingot for desired asymmetrical steel, and projections 15, 15' are formed in both end parts on one side, whereby an intermediate rough shape ingot 7 having a locally asymmetrical shape is formed. Thence, the ingot 7 is used and is subjected to wide broadside screw-down rolling, whereby the 2nd intermediate rough shape ingot 13 having bulges 16, 17 is formed by utilizing the bulging in the broadside end parts. By using this ingot 13, a rough shape ingot 3 for asymmetrical steel is formed.
JP17792480A 1980-12-16 1980-12-16 Production of rough shape ingot for asymmetrical shape steel Pending JPS57100804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17792480A JPS57100804A (en) 1980-12-16 1980-12-16 Production of rough shape ingot for asymmetrical shape steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17792480A JPS57100804A (en) 1980-12-16 1980-12-16 Production of rough shape ingot for asymmetrical shape steel

Publications (1)

Publication Number Publication Date
JPS57100804A true JPS57100804A (en) 1982-06-23

Family

ID=16039441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17792480A Pending JPS57100804A (en) 1980-12-16 1980-12-16 Production of rough shape ingot for asymmetrical shape steel

Country Status (1)

Country Link
JP (1) JPS57100804A (en)

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