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SE8205332L - High strength titanium steel sheet for welded tubes - hot rolling process for good cold toughness and cold forming properties - Google Patents

High strength titanium steel sheet for welded tubes - hot rolling process for good cold toughness and cold forming properties

Info

Publication number
SE8205332L
SE8205332L SE8205332A SE8205332A SE8205332L SE 8205332 L SE8205332 L SE 8205332L SE 8205332 A SE8205332 A SE 8205332A SE 8205332 A SE8205332 A SE 8205332A SE 8205332 L SE8205332 L SE 8205332L
Authority
SE
Sweden
Prior art keywords
degrees
rolling
max
hot rolling
cold
Prior art date
Application number
SE8205332A
Other languages
Swedish (sv)
Other versions
SE452339B (en
SE8205332D0 (en
Inventor
H Takechi
T Kawano
K Koyama
T Hashizume
H Masui
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
Priority claimed from JP732832A external-priority patent/JPS5545614B2/ja
Priority claimed from JP732833A external-priority patent/JPS5527130B2/ja
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of SE8205332L publication Critical patent/SE8205332L/en
Publication of SE8205332D0 publication Critical patent/SE8205332D0/en
Publication of SE452339B publication Critical patent/SE452339B/en

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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab

Landscapes

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

Abstract

An aluminium-killed steel contg. 0.04-0.35% Ti with a Ti:C ration 4 and 0.005-0.15% sol. Al is hot rolled at 980-1100 degrees C with >1 pass to give a redn. in cross-section >28%, then rolled 980 degrees C to give a redn. over 50% with an end temp. of 730-880 degrees C. It is then cooled at 3-40 degrees C/sec. to the reeling temp. of 500-680 degrees C. The steel is heated >1200 degrees C prior to hot rolling. The steel compsn comprises 0.03-0.20% C, 0.8% max. Si, 0.9-2.5% Mn, 0.020% max. S, 0.008% max. N, and opt. 0.01-0.15% Zr, 0.005-0.10% La and Ce, 0.01-1.0% Nb, 0.01-0.10% V, 0.003% max B, and/or 0.5% max. each of Ni,Cr,Cu. The rolling technique rests on the basic that the coarse austenite grains formed on heating Ti steels can be recrystallised to fine grains by rolling >1100 degrees C and rolling below this temp. with >1 pass and a redn. >28% causes recrystallisation with a fine grained structure up to about 980 degrees C conferring high tensile strength with good cold toughness and cold working characteristics.

Claims (1)

PatentkravPatent claims 1. satt att framstilla hfighillfast band av med Al ,titat stal, som bar Overligsen kallbearbetbarhet och Utmirkt seghet, samt bar fOljande generella legeringssammansittfling, nimligen: C 0,03 - 0,2%, Cr <0,8%, Mn 0,90 - 2,5%, s 20,020%, N 50,008% och valfritt med en eller flera ay Zr 0,01 - 0,15%, La,Ce 0,005 - 0,10%, Nb 0,01 - 0,10%, vanadin 0,01 - 0,10%, bor 50,0030%, Ni 50,5%, Cr 00,5% och Cu 50,5/, kAnnetecknat av art under en vanlig varmvalsning med foljande stag, r,Smligen 1) virmning ay ett plattamne, 2) fOrvalsning med ett eller flera fOrvalspar, 3) firdigvalsning medelst Elena tandemverk, 4) tryckkylning medelst vatten pi utgingsrullbanan och 5) haspling nar stalet innehiller 0,04 - 0,35% Ti med forbehallet Ti/C <4 och 0,05 - 0,15% i syra losligt Al, varmvalsilingen avslutas i ett temperaturomride av 730 - 880°C och av Ott CO total re uktion under 980°C av mer in 50% fore'1. set out to produce high-strength bands of Al, titanium steel, which had superior cold workability and excellent toughness, and had the following general alloy composition, namely: C 0.03 - 0.2%, Cr <0.8%, Mn 0, 90 - 2.5%, s 20.020%, N 50.008% and optionally with one or more ay Zr 0.01 - 0.15%, La, Ce 0.005 - 0.10%, Nb 0.01 - 0.10% , vanadium 0.01 - 0.10%, boron 50,0030%, Ni 50,5%, Cr 00,5% and Cu 50,5 /, kDrawn by nature during a normal hot rolling with the following struts, r, Smligen 1 ) pre-rolling with a plate name, 2) pre-rolling with one or more pre-rolling pairs, 3) pre-rolling by means of Elena tandem plant, 4) pressure cooling by means of water on the output roller conveyor and 5) reeling when the steel contains 0.04 - 0.35% Ti with the reserved Ti / C <4 and 0.05 - 0.15% in acid soluble Al, the hot rolling screening is completed in a temperature range of 730 - 880 ° C and by Ott CO total reaction below 980 ° C of more in 50% fore '
SE8205332A 1972-12-31 1982-09-17 SET TO MAKE HOGHALL FASTEN STALBAND SE452339B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP732832A JPS5545614B2 (en) 1972-12-31 1972-12-31
JP732833A JPS5527130B2 (en) 1972-12-31 1972-12-31

Publications (3)

Publication Number Publication Date
SE8205332L true SE8205332L (en) 1982-09-17
SE8205332D0 SE8205332D0 (en) 1982-09-17
SE452339B SE452339B (en) 1987-11-23

Family

ID=26336300

Family Applications (2)

Application Number Title Priority Date Filing Date
SE7317631A SE417985C (en) 1972-12-31 1973-12-31 SET TO MAKE HOGHALL FASTEN STALBAND
SE8205332A SE452339B (en) 1972-12-31 1982-09-17 SET TO MAKE HOGHALL FASTEN STALBAND

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE7317631A SE417985C (en) 1972-12-31 1973-12-31 SET TO MAKE HOGHALL FASTEN STALBAND

Country Status (7)

Country Link
US (1) US3925111A (en)
CA (1) CA1003311A (en)
DE (1) DE2365156B2 (en)
FR (1) FR2212434B1 (en)
GB (1) GB1455440A (en)
IT (1) IT1002387B (en)
SE (2) SE417985C (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115155A (en) * 1974-05-03 1978-09-19 Bethlehem Steel Corporation Low carbon high yield and tensile strength steel and method of manufacture
JPS5333919A (en) * 1976-09-10 1978-03-30 Nippon Steel Corp Production of cold rolled aluminum killed steel sheet with excellent deep drawability
US4082576A (en) * 1976-10-04 1978-04-04 Youngstown Sheet And Tube Company Ultra-high strength low alloy titanium bearing flat rolled steel and process for making
JPS5421917A (en) * 1977-07-20 1979-02-19 Nippon Kokan Kk <Nkk> Method of manufacturing non-quenched high-tensile steel having high toughness
JPS54132421A (en) * 1978-04-05 1979-10-15 Nippon Steel Corp Manufacture of high toughness bainite high tensile steel plate with superior weldability
DE2900022C3 (en) * 1979-01-02 1981-12-03 Estel Hoesch Werke Ag, 4600 Dortmund Process for producing profiles
JPS604248B2 (en) * 1979-03-01 1985-02-02 株式会社神戸製鋼所 Manufacturing method for hot-rolled non-temperature high-strength steel sheets
US4472208A (en) * 1982-06-28 1984-09-18 Sumitomo Metal Industries, Ltd. Hot-rolled high tensile titanium steel plates and production thereof
JPH0441616A (en) * 1990-06-06 1992-02-12 Nkk Corp Production of low-hardness water-resistant steel excellent in wear resistance and bendability
FR2668169B1 (en) * 1990-10-18 1993-01-22 Lorraine Laminage IMPROVED WELDING STEEL.
US5542995A (en) * 1992-02-19 1996-08-06 Reilly; Robert Method of making steel strapping and strip and strapping and strip
JPH05239591A (en) * 1992-02-27 1993-09-17 Nkk Corp Steel excellent in wear resistance
DE19834361A1 (en) * 1998-07-30 2000-02-03 Schaeffler Waelzlager Ohg Precision deep-drawn case-hardened component, especially a roller bearing and motor component e.g. a needle bearing, sleeve or bush, is made from a cold rolled strip of steel with specified titanium, nitrogen and low aluminum contents
DE10062919A1 (en) * 2000-12-16 2002-06-27 Thyssenkrupp Stahl Ag Process for producing hot strip or sheet from a microalloyed steel
JP4431185B2 (en) * 2008-06-13 2010-03-10 新日本製鐵株式会社 High-strength steel sheet with excellent stretch flangeability and fatigue characteristics and method for producing the molten steel
CN105648311B (en) * 2011-08-09 2018-03-30 新日铁住金株式会社 The excellent high yield of impact energy absorption characteristic and the softening properties of resistance to HAZ at low temperature compares hot rolled steel plate

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328211A (en) * 1963-12-05 1967-06-27 Ishikawajima Harima Heavy Ind Method of manufacturing weldable, tough and high strength steel for structure members usable in the ashot-state and steel so made
US3432368A (en) * 1965-02-25 1969-03-11 Ishikawajima Harima Heavy Ind Method for manufacturing nitride-containing low-carbon structural steels
US3544393A (en) * 1967-08-11 1970-12-01 Nat Steel Corp Method of manufacturing low carbon high tensile strength alloy steel
US3625780A (en) * 1968-04-29 1971-12-07 Youngstown Sheet And Tube Co Process for preparation of high-strength alloy of titanium and ferritic structure
US3673007A (en) * 1968-11-29 1972-06-27 Japan Steel Works Ltd Method for manufacturing a high toughness steel without subjecting it to heat treatment

Also Published As

Publication number Publication date
SE452339B (en) 1987-11-23
SE417985B (en) 1981-04-27
GB1455440A (en) 1976-11-10
IT1002387B (en) 1976-05-20
SE417985C (en) 1983-05-02
FR2212434A1 (en) 1974-07-26
CA1003311A (en) 1977-01-11
DE2365156A1 (en) 1974-07-25
FR2212434B1 (en) 1977-06-10
SE8205332D0 (en) 1982-09-17
US3925111A (en) 1975-12-09
DE2365156B2 (en) 1978-07-20

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