GB773072A - Improvements in or relating to strip steel - Google Patents

Improvements in or relating to strip steel

Info

Publication number
GB773072A
GB773072A GB6405/54A GB640554A GB773072A GB 773072 A GB773072 A GB 773072A GB 6405/54 A GB6405/54 A GB 6405/54A GB 640554 A GB640554 A GB 640554A GB 773072 A GB773072 A GB 773072A
Authority
GB
United Kingdom
Prior art keywords
strip
per cent
cold
rolled
temperature
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
GB6405/54A
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.)
Bochumer Verein fuer Gussstahlfabrikation AG
Original Assignee
Bochumer Verein fuer Gussstahlfabrikation 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 Bochumer Verein fuer Gussstahlfabrikation AG filed Critical Bochumer Verein fuer Gussstahlfabrikation AG
Publication of GB773072A publication Critical patent/GB773072A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0231—Warm rolling
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • 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
    • 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
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

In a process for the manufacture of strip steel having a tensile strength greater than 140 kg/mm2, hot-rolled stock is quenched directly after issuing from the last roll pass to an external temperature lying between the Ar3 point of the cooling curve and the lowest external temperature at which coiling of the stock is possible, the stock is coiled while being further cooled, is then immediately subjected to an equalizing heat treatment at a temperature between 250 DEG C. and 550 DEG C and after cooling is cold-rolled. The quenching may be effected by any of the methods disclosed in Specification 762,127 or by a blast of cold air, alone or in conjunction with a fine water spray. By way of example is described the production of strip where steel plate bars having the composition of C 0.94 per cent, Si 0.21 per cent, Mn 0.59 per cent, P 0.45 per cent and S 0.017 per cent were rolled out to hot strip having a temperature of 980 DEG C., the strip quenched to 600 DEG C., coiled, the temperature being still further reduced, subjected to an equalizing heat treatment at 480 DEG C., cooled in air, pickled and then cold-rolled. An annealing treatment prior to cold-rolling is optional. The strip may be used in the manufacture of wood-saw blades, e.g., for band-saws, and metal-saw blades. Specification 773,071 also is referred to.
GB6405/54A 1953-03-05 1954-03-04 Improvements in or relating to strip steel Expired GB773072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE188354X 1953-03-05

Publications (1)

Publication Number Publication Date
GB773072A true GB773072A (en) 1957-04-24

Family

ID=5720831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6405/54A Expired GB773072A (en) 1953-03-05 1954-03-04 Improvements in or relating to strip steel

Country Status (3)

Country Link
AT (2) AT188354B (en)
FR (2) FR1094250A (en)
GB (1) GB773072A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458999B1 (en) * 1965-06-16 1969-09-11 Hoesch Ag Process for the production of cold strips from hardenable carbon steels

Also Published As

Publication number Publication date
AT194877B (en) 1958-01-25
AT188354B (en) 1957-01-10
FR1094250A (en) 1955-05-16
FR68143E (en) 1958-04-08

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