WO2006133355A3 - Cast iron alloy containing boron - Google Patents

Cast iron alloy containing boron Download PDF

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Publication number
WO2006133355A3
WO2006133355A3 PCT/US2006/022272 US2006022272W WO2006133355A3 WO 2006133355 A3 WO2006133355 A3 WO 2006133355A3 US 2006022272 W US2006022272 W US 2006022272W WO 2006133355 A3 WO2006133355 A3 WO 2006133355A3
Authority
WO
WIPO (PCT)
Prior art keywords
boron
cast iron
alloy containing
iron alloy
containing boron
Prior art date
Application number
PCT/US2006/022272
Other languages
French (fr)
Other versions
WO2006133355A2 (en
Inventor
Robert Eppich
Original Assignee
Robert Eppich
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 Robert Eppich filed Critical Robert Eppich
Publication of WO2006133355A2 publication Critical patent/WO2006133355A2/en
Publication of WO2006133355A3 publication Critical patent/WO2006133355A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006—Adding metallic additives
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • 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
    • C21D5/00—Heat treatments of cast-iron
    • 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
    • C21D5/00—Heat treatments of cast-iron
    • C21D5/04—Heat treatments of cast-iron of white cast-iron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/08—Making cast-iron alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

The alloy of ductile cast iron to which boron has been added is found to have improved annealability as compared to a non-boron treat ductile iron. The addition of boron in amounts between about 10 ppm and 150 ppm by weight effectively combines with nitrogen dissolved in the molten iron and thus serves to minimize the influence of nitrogen on the stability of carbides and pearlite and also forms BN, which can serve as nuclei for the precipitation of graphite.
PCT/US2006/022272 2005-06-08 2006-06-08 Cast iron alloy containing boron WO2006133355A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68858605P 2005-06-08 2005-06-08
US60/688,586 2005-06-08

Publications (2)

Publication Number Publication Date
WO2006133355A2 WO2006133355A2 (en) 2006-12-14
WO2006133355A3 true WO2006133355A3 (en) 2007-11-08

Family

ID=37499121

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/022272 WO2006133355A2 (en) 2005-06-08 2006-06-08 Cast iron alloy containing boron

Country Status (2)

Country Link
US (2) US20060292026A1 (en)
WO (1) WO2006133355A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7824605B2 (en) * 2006-12-15 2010-11-02 Dexter Foundry, Inc. As-cast carbidic ductile iron

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450019A (en) * 1982-04-01 1984-05-22 Toyo Kogyo Co., Ltd. Ductile cast iron
US20020195180A1 (en) * 2001-06-20 2002-12-26 Werner Menk Nodular cast iron alloy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253718A (en) * 1975-10-29 1977-04-30 Nippon Piston Ring Co Ltd Abrasion resistant cast iron
US4548643A (en) * 1983-12-20 1985-10-22 Trw Inc. Corrosion resistant gray cast iron graphite flake alloys
US4638847A (en) * 1984-03-16 1987-01-27 Giw Industries, Inc. Method of forming abrasive resistant white cast iron
JPH01255644A (en) * 1988-04-05 1989-10-12 Nkk Corp Manufacture of iron-boron-silicon alloy
US5225007A (en) * 1990-02-28 1993-07-06 Hitachi Metals Ltd. Method for wear-resistant compound roll manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450019A (en) * 1982-04-01 1984-05-22 Toyo Kogyo Co., Ltd. Ductile cast iron
US20020195180A1 (en) * 2001-06-20 2002-12-26 Werner Menk Nodular cast iron alloy

Also Published As

Publication number Publication date
WO2006133355A2 (en) 2006-12-14
US20080006349A1 (en) 2008-01-10
US20060292026A1 (en) 2006-12-28

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DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
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