JPS5594701A - Hot blooming method for invar alloy - Google Patents

Hot blooming method for invar alloy

Info

Publication number
JPS5594701A
JPS5594701A JP102479A JP102479A JPS5594701A JP S5594701 A JPS5594701 A JP S5594701A JP 102479 A JP102479 A JP 102479A JP 102479 A JP102479 A JP 102479A JP S5594701 A JPS5594701 A JP S5594701A
Authority
JP
Japan
Prior art keywords
slab
oxidization
heating
blooming
ingot
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
JP102479A
Other languages
Japanese (ja)
Other versions
JPS5754205B2 (en
Inventor
Makie Takahashi
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 Nisshin Co Ltd
Original Assignee
Nisshin Steel Co Ltd
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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP102479A priority Critical patent/JPS5594701A/en
Publication of JPS5594701A publication Critical patent/JPS5594701A/en
Publication of JPS5754205B2 publication Critical patent/JPS5754205B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/008—Heat shields
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

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

Abstract

PURPOSE:To manufacture the hot coil with few crack flaws, by blooming under specified conditions to prepare the slab, and by heating while taking means of restricting the oxidization. CONSTITUTION:The ingot is kept at temperatures 1000-1200 deg.C while being rolled; and this ingot is bloomed into the slab with the draft percentage, 3% per one pass; when this draft percentage is summed up for whole passes to 40%, the blooming work is finished. When the slab is heated, the front and back surfaces of the slab are covered with protector plates which protect the slab from the high temperature internal atmosphere of the heating furnace. That is, the slab 1 of invar alloy is placed on the back surface protector plate 2 being laid on the support beam 10, and the front surface of the slab 1 is covered with the front surface protector plate 3; under these conditions, the slab 1 is conveyed within the heating furnace. As the means of restricting the oxidization due to the heating, it is also effective that the front and back surface of the slab are applied with the heat resisting paint on purpose to prevent the high temperature oxidization. Hereby, the oxidization speed of the slab surface is slowed down, and the thickness of generated scale layer becomes thin.
JP102479A 1979-01-11 1979-01-11 Hot blooming method for invar alloy Granted JPS5594701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP102479A JPS5594701A (en) 1979-01-11 1979-01-11 Hot blooming method for invar alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP102479A JPS5594701A (en) 1979-01-11 1979-01-11 Hot blooming method for invar alloy

Publications (2)

Publication Number Publication Date
JPS5594701A true JPS5594701A (en) 1980-07-18
JPS5754205B2 JPS5754205B2 (en) 1982-11-17

Family

ID=11489989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP102479A Granted JPS5594701A (en) 1979-01-11 1979-01-11 Hot blooming method for invar alloy

Country Status (1)

Country Link
JP (1) JPS5594701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09263827A (en) * 1996-03-28 1997-10-07 Nisshin Steel Co Ltd Manufacture of stock for shadow mask, free from striped irregularity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09263827A (en) * 1996-03-28 1997-10-07 Nisshin Steel Co Ltd Manufacture of stock for shadow mask, free from striped irregularity

Also Published As

Publication number Publication date
JPS5754205B2 (en) 1982-11-17

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