ES2160891T3 - PROCEDURE FOR THE PREPARATION OF A RESULFURED STEEL OF FINE AUSTENITICAL GRAIN. - Google Patents

PROCEDURE FOR THE PREPARATION OF A RESULFURED STEEL OF FINE AUSTENITICAL GRAIN.

Info

Publication number
ES2160891T3
ES2160891T3 ES97203234T ES97203234T ES2160891T3 ES 2160891 T3 ES2160891 T3 ES 2160891T3 ES 97203234 T ES97203234 T ES 97203234T ES 97203234 T ES97203234 T ES 97203234T ES 2160891 T3 ES2160891 T3 ES 2160891T3
Authority
ES
Spain
Prior art keywords
steel
grain
fine
metals
wire
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 - Lifetime
Application number
ES97203234T
Other languages
Spanish (es)
Inventor
Gianfranco Chioatto
Giovanni Maccio'
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.)
LUCCHINI SpA
Original Assignee
LUCCHINI SpA
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 LUCCHINI SpA filed Critical LUCCHINI SpA
Application granted granted Critical
Publication of ES2160891T3 publication Critical patent/ES2160891T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
ES97203234T 1996-10-25 1997-10-16 PROCEDURE FOR THE PREPARATION OF A RESULFURED STEEL OF FINE AUSTENITICAL GRAIN. Expired - Lifetime ES2160891T3 (en)

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 (1)

Publication Number Publication Date
ES2160891T3 true ES2160891T3 (en) 2001-11-16

Family

ID=11375098

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97203234T Expired - Lifetime ES2160891T3 (en) 1996-10-25 1997-10-16 PROCEDURE FOR THE PREPARATION OF A RESULFURED STEEL OF FINE AUSTENITICAL GRAIN.

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
SG10201402458SA (en) 2009-05-20 2014-07-30 Basf Se 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
EP0838534A1 (en) 1998-04-29
IT1286045B1 (en) 1998-07-07
DE69705691D1 (en) 2001-08-23
EP0838534B1 (en) 2001-07-18
DK0838534T3 (en) 2001-11-05
SI0838534T1 (en) 2001-12-31
ATE203282T1 (en) 2001-08-15
DE69705691T2 (en) 2002-07-04
PT838534E (en) 2001-12-28
ITMI962219A1 (en) 1998-04-25
GR3036834T3 (en) 2002-01-31

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