IT1286045B1 - IMPROVED RESOLFORATED FINE AUSTENITIC GRAIN STEEL AND RELATED PROCEDURE TO OBTAIN IT - Google Patents

IMPROVED RESOLFORATED FINE AUSTENITIC GRAIN STEEL AND RELATED PROCEDURE TO OBTAIN IT

Info

Publication number
IT1286045B1
IT1286045B1 IT96MI002219A ITMI962219A IT1286045B1 IT 1286045 B1 IT1286045 B1 IT 1286045B1 IT 96MI002219 A IT96MI002219 A IT 96MI002219A IT MI962219 A ITMI962219 A IT MI962219A IT 1286045 B1 IT1286045 B1 IT 1286045B1
Authority
IT
Italy
Prior art keywords
metals
wire
coatings
globular
sulfides
Prior art date
Application number
IT96MI002219A
Other languages
Italian (it)
Inventor
Gianfranco Chioatto
Giovanni Maccio'
Original Assignee
Lucchini Centro Ricerche E Svi
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 to IT96MI002219A priority Critical patent/IT1286045B1/en
Application filed by Lucchini Centro Ricerche E Svi filed Critical Lucchini Centro Ricerche E Svi
Priority to PT97203234T priority patent/PT838534E/en
Priority to ES97203234T priority patent/ES2160891T3/en
Priority to DE69705691T priority patent/DE69705691T2/en
Priority to SI9730207T priority patent/SI0838534T1/en
Priority to DK97203234T priority patent/DK0838534T3/en
Priority to AT97203234T priority patent/ATE203282T1/en
Priority to EP97203234A priority patent/EP0838534B1/en
Publication of ITMI962219A1 publication Critical patent/ITMI962219A1/en
Application granted granted Critical
Publication of IT1286045B1 publication Critical patent/IT1286045B1/en
Priority to GR20010401695T priority patent/GR3036834T3/en

Links

Classifications

    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Disclosed is a particular type of fine-austenitic-grain globular-sulfides resulfurized carbon and/or alloy steel suitable for casehardening and hardening-tempering treatments, with the addition of transition metals of Group III (rare earth metals or lanthanides), in form of non-coated wire or wire coated with metals, metal alloys or still other coatings, such as ceramic coating or other types of coatings. The addition of rare earths as metal wire to ingot mould or tundish allows rare earth elements to be perfectly diffused and homogenized throughout the product and globular sulfides to be homogeneously distributed as well throughout the cast section; the resulting steel displays better machinability properties than steel produced by means of traditional techniques.
IT96MI002219A 1996-10-25 1996-10-25 IMPROVED RESOLFORATED FINE AUSTENITIC GRAIN STEEL AND RELATED PROCEDURE TO OBTAIN IT IT1286045B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
IT96MI002219A IT1286045B1 (en) 1996-10-25 1996-10-25 IMPROVED RESOLFORATED FINE AUSTENITIC GRAIN STEEL AND RELATED PROCEDURE TO OBTAIN IT
ES97203234T ES2160891T3 (en) 1996-10-25 1997-10-16 PROCEDURE FOR THE PREPARATION OF A RESULFURED STEEL OF FINE AUSTENITICAL GRAIN.
DE69705691T DE69705691T2 (en) 1996-10-25 1997-10-16 Process for the production of sulfurized steel with a fine austenitic grain
SI9730207T SI0838534T1 (en) 1996-10-25 1997-10-16 Process for obtaining an improved resulfurized fine-austenitic-grain steel
PT97203234T PT838534E (en) 1996-10-25 1997-10-16 PROCESS FOR OBTAINING AN AUSTENITIC ACOUSURE OF FINE GROWTH RESULFURIZED IMPROVED
DK97203234T DK0838534T3 (en) 1996-10-25 1997-10-16 Process for obtaining an improved resulfurized fine-grained austenitic steel
AT97203234T ATE203282T1 (en) 1996-10-25 1997-10-16 METHOD FOR PRODUCING SULFURIZED STEEL WITH FINE AUSTENITIC GRAIN
EP97203234A EP0838534B1 (en) 1996-10-25 1997-10-16 Process for obtaining an improved resulfurized fine-austenitic-grain steel
GR20010401695T GR3036834T3 (en) 1996-10-25 2001-10-08 Improved resulfurized fine-austenitic-grain steel and process for obtaining it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT96MI002219A IT1286045B1 (en) 1996-10-25 1996-10-25 IMPROVED RESOLFORATED FINE AUSTENITIC GRAIN STEEL AND RELATED PROCEDURE TO OBTAIN IT

Publications (2)

Publication Number Publication Date
ITMI962219A1 ITMI962219A1 (en) 1998-04-25
IT1286045B1 true IT1286045B1 (en) 1998-07-07

Family

ID=11375098

Family Applications (1)

Application Number Title Priority Date Filing Date
IT96MI002219A IT1286045B1 (en) 1996-10-25 1996-10-25 IMPROVED RESOLFORATED FINE AUSTENITIC GRAIN STEEL AND RELATED PROCEDURE TO OBTAIN IT

Country Status (9)

Country Link
EP (1) EP0838534B1 (en)
AT (1) ATE203282T1 (en)
DE (1) DE69705691T2 (en)
DK (1) DK0838534T3 (en)
ES (1) ES2160891T3 (en)
GR (1) GR3036834T3 (en)
IT (1) IT1286045B1 (en)
PT (1) PT838534E (en)
SI (1) SI0838534T1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10047642A1 (en) 2000-09-26 2002-04-11 Basf Ag Process for the dehydrogenation of hydrocarbons
DE10060099A1 (en) 2000-12-04 2002-06-06 Basf Ag Regeneration of a dehydrogenation catalyst
DE10150811A1 (en) 2001-10-15 2003-04-24 Basf Ag Dehydrogenation of alkanes, e.g. propane to propene, comprises dehydrogenation of ethylbenzene to styrene to form hydrogen containing waste gas stream and heterogeneous catalyzed dehydrogenation of the alkane mixed with the hydrogen
JP4041511B2 (en) * 2005-10-17 2008-01-30 株式会社神戸製鋼所 Low-carbon sulfur free-cutting steel with excellent machinability
KR101781656B1 (en) 2009-05-20 2017-10-10 바스프 에스이 Monolith catalyst and use thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421948A1 (en) * 1978-04-06 1979-11-02 Pro Chi Met Produits Chim Meta PROCESS FOR THE PREPARATION OF FERROUS ALLOYS SENSITIVELY FREE OF CERIUM, ALLOWING IN PARTICULAR IMPROVEMENT OF THEIR MECHANICAL PROPERTIES THANKS TO THE USE OF LANTHANE, AND FERROUS ALLOYS OBTAINED BY THIS PROCESS
EP0011365A1 (en) * 1978-10-02 1980-05-28 W.A. TYZACK & COMPANY LIMITED Agricultural mould-boards and method for manufacturing same
US4806304A (en) * 1983-05-09 1989-02-21 Daido Tokushuko Kabushiki Kaisha Free cutting steel
JPS6223970A (en) * 1985-07-24 1987-01-31 Nippon Steel Corp Continuously cast low-carbon sulfur-lead free-cutting steel
US4786466A (en) * 1987-02-19 1988-11-22 Frema, Inc. Low-sulfur, lead-free free machining steel alloy
JP2671086B2 (en) * 1992-09-22 1997-10-29 新日本製鐵株式会社 Low carbon sulfur free cutting steel by continuous casting method

Also Published As

Publication number Publication date
SI0838534T1 (en) 2001-12-31
DE69705691D1 (en) 2001-08-23
EP0838534B1 (en) 2001-07-18
ES2160891T3 (en) 2001-11-16
EP0838534A1 (en) 1998-04-29
DE69705691T2 (en) 2002-07-04
DK0838534T3 (en) 2001-11-05
PT838534E (en) 2001-12-28
ATE203282T1 (en) 2001-08-15
GR3036834T3 (en) 2002-01-31
ITMI962219A1 (en) 1998-04-25

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