BE903227A - METHOD OF SURFACE HARDENING OF RODS AND DRILL RODS THUS OBTAINED - Google Patents

METHOD OF SURFACE HARDENING OF RODS AND DRILL RODS THUS OBTAINED

Info

Publication number
BE903227A
BE903227A BE0/215578A BE215578A BE903227A BE 903227 A BE903227 A BE 903227A BE 0/215578 A BE0/215578 A BE 0/215578A BE 215578 A BE215578 A BE 215578A BE 903227 A BE903227 A BE 903227A
Authority
BE
Belgium
Prior art keywords
strip
rods
coupling
surface hardening
drill
Prior art date
Application number
BE0/215578A
Other languages
French (fr)
Inventor
N Signori
Original Assignee
Saipem 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 Saipem Spa filed Critical Saipem Spa
Publication of BE903227A publication Critical patent/BE903227A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • 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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
    • 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
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Earth Drilling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Adornments (AREA)

Abstract

Le procédé de durcissement superficiel selon la présente invention permet de durcir une bande (F) de l'accouplement femelle (6) d'une tige de forage en acier, ladite bande se trouvant entre la zone filetée (7) de l'accouplement et la zone conique (5) qui relie l'accouplement au corps cylindrique (5) de la tige.Ce procédé consiste à nettoyer la bande (F) par brossage et/ou sablage au jet, à préchauffer par induction la bande (F)et à porter finalement une couche pelliculaire superficielle de ladite bande à une température d'austénisation au moyen d'un faisceau laser.The surface hardening method according to the present invention makes it possible to harden a strip (F) of the female coupling (6) of a steel drill pipe, said strip lying between the threaded zone (7) of the coupling and the conical zone (5) which connects the coupling to the cylindrical body (5) of the rod. This process consists in cleaning the strip (F) by brushing and / or sandblasting, by induction preheating the strip (F) and finally bringing a surface film layer of said strip to an austenization temperature by means of a laser beam.

BE0/215578A 1984-09-13 1985-09-12 METHOD OF SURFACE HARDENING OF RODS AND DRILL RODS THUS OBTAINED BE903227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT22647/84A IT1176705B (en) 1984-09-13 1984-09-13 PROCEDURE PERFECTED FOR SURFACE HARDENING OF THE JOINTS OF THE DRILLING AUCTIONS AND AUCTIONS SO OBTAINED

Publications (1)

Publication Number Publication Date
BE903227A true BE903227A (en) 1986-03-12

Family

ID=11198819

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/215578A BE903227A (en) 1984-09-13 1985-09-12 METHOD OF SURFACE HARDENING OF RODS AND DRILL RODS THUS OBTAINED

Country Status (15)

Country Link
JP (1) JPS6179725A (en)
AU (1) AU576383B2 (en)
BE (1) BE903227A (en)
BR (1) BR8504550A (en)
CA (1) CA1253054A (en)
DE (1) DE3532451A1 (en)
DK (1) DK413185A (en)
ES (1) ES8609491A1 (en)
FR (1) FR2570084A1 (en)
GB (1) GB2164358B (en)
IT (1) IT1176705B (en)
NL (1) NL8502505A (en)
NO (1) NO853543L (en)
NZ (1) NZ213327A (en)
PT (1) PT81120B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450151B (en) * 1985-11-21 1987-06-09 Ffv Transmission Ab DEVICE WITH CONTROLLED FRICTION AND PROCEDURE TO RECEIVE CONTROL FRICTION BY SUCH A DEVICE
US4708752A (en) * 1986-03-24 1987-11-24 Smith International, Inc. Process for laser hardening drilling bit cones having hard cutter inserts placed therein
CA2038378C (en) * 1991-03-25 1998-08-18 Irvin Joseph Laporte (Bud) Stabilized drill tube
GB2257163B (en) * 1991-07-02 1995-04-05 Res & Dev Min Def Gov In A process for improving fatigue crack growth resistance
CA2317553C (en) * 1998-01-05 2007-06-12 Weatherford U.S., L.P. A drill pipe and method of forming and reconditioning a drill pipe
WO2005001234A1 (en) * 2003-06-30 2005-01-06 Todd Andrew Haines Sub-assembly for drill strings
DE102007044696A1 (en) * 2007-06-29 2009-01-08 Ks Kolbenschmidt Gmbh Melt-treated bowl rim of a piston combustion bowl
JP4790767B2 (en) * 2008-07-16 2011-10-12 川崎重工業株式会社 Swash plate type hydraulic rotating machine
SE535814C2 (en) 2011-05-20 2013-01-02 Atlas Copco Secoroc Ab Threading device, threaded joint and drill string component for striking rock drilling
FR3015546B1 (en) 2013-12-20 2015-12-25 Vallourec Drilling Products France DRILL LINING ELEMENT HAVING AN IMPROVED REFILL LAYER
CN106761460A (en) * 2017-03-15 2017-05-31 吉林大学 Graphene shaped wear-resistant belt of drill pipe joint prepared by a kind of laser melting coating

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920135C (en) * 1951-06-22 1954-11-15 Rheinische Roehrenwerke Ag Process for the production of wear-resistant linkage pipe connectors and sleeves for oil field pipes
US3489620A (en) * 1967-03-01 1970-01-13 United States Steel Corp Method of processing sucker rods and resulting article
DE1783058A1 (en) * 1968-09-26 1971-02-18 Gerd Hoeptner Process for hardening cutting and chipping tools with higher cutting edge hardness
GB1496377A (en) * 1974-11-26 1977-12-30 Nippon Steel Corp Method of heat-treatment of welded pipe and apparatus therefor
CA1063439A (en) * 1976-09-28 1979-10-02 Torrington Company (The) Textile element and method of making same
DE3343783C1 (en) * 1983-12-03 1984-07-05 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Process for the production of wear-resistant cylinder running surfaces of internal combustion engines

Also Published As

Publication number Publication date
DE3532451A1 (en) 1986-03-20
DK413185D0 (en) 1985-09-11
DK413185A (en) 1986-03-14
ES8609491A1 (en) 1986-09-01
AU576383B2 (en) 1988-08-25
IT8422647A1 (en) 1986-03-13
DE3532451C2 (en) 1987-10-22
AU4690685A (en) 1986-03-20
PT81120B (en) 1992-05-29
GB2164358B (en) 1988-08-03
IT1176705B (en) 1987-08-18
NL8502505A (en) 1986-04-01
BR8504550A (en) 1986-07-15
IT8422647A0 (en) 1984-09-13
GB8521740D0 (en) 1985-10-09
JPS6179725A (en) 1986-04-23
GB2164358A (en) 1986-03-19
CA1253054A (en) 1989-04-25
NO853543L (en) 1986-03-14
ES547703A0 (en) 1986-09-01
FR2570084A1 (en) 1986-03-14
NZ213327A (en) 1987-05-29
PT81120A (en) 1985-10-01

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: SAIPEM S.P.A.

Effective date: 19890930