GB1117254A - Heat-treatment of steel - Google Patents

Heat-treatment of steel

Info

Publication number
GB1117254A
GB1117254A GB2888665A GB2888665A GB1117254A GB 1117254 A GB1117254 A GB 1117254A GB 2888665 A GB2888665 A GB 2888665A GB 2888665 A GB2888665 A GB 2888665A GB 1117254 A GB1117254 A GB 1117254A
Authority
GB
United Kingdom
Prior art keywords
treatment
steel
hours
cooling
holding
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.)
Expired
Application number
GB2888665A
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.)
Krupp Stahl AG
Original Assignee
Stahlwerke Suedwestfalen AG
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 Stahlwerke Suedwestfalen AG filed Critical Stahlwerke Suedwestfalen AG
Publication of GB1117254A publication Critical patent/GB1117254A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/82—Descaling by thermal stresses
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

Hardenable alloyed or non-alloyed steels are treated to facilitate removal of scale in a subsequent shot-blasting process by subjecting them to the following sequence: (a) heating to 780-880 DEG C. and holding for 1 to 3 hours. (b) cooling to 500 DEG -680 DEG C. (c) reheating to 700 DEG -780 DEG C. holding for 1 to 3 hours. (d) cooling the steel at 5 DEG to 20 DEG C. per hour to 630 DEG C. or below. The heat treatment may be carried out as a continuous process. Treatment of two 1% chromium steels in the form of wire is particularly referred to.
GB2888665A 1964-07-08 1965-07-07 Heat-treatment of steel Expired GB1117254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964ST022371 DE1246785B (en) 1964-07-08 1964-07-08 Improvement of the blastability in the removal of rolled or hot scale from annealed, unalloyed and alloyed hardenable steels

Publications (1)

Publication Number Publication Date
GB1117254A true GB1117254A (en) 1968-06-19

Family

ID=7459341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2888665A Expired GB1117254A (en) 1964-07-08 1965-07-07 Heat-treatment of steel

Country Status (6)

Country Link
AT (1) AT268355B (en)
BE (1) BE665559A (en)
DE (1) DE1246785B (en)
GB (1) GB1117254A (en)
LU (1) LU48967A1 (en)
NL (1) NL6508522A (en)

Also Published As

Publication number Publication date
LU48967A1 (en) 1965-09-02
NL6508522A (en) 1966-01-10
BE665559A (en) 1965-10-18
AT268355B (en) 1969-02-10
DE1246785B (en) 1967-08-10

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