DE3532451C2 - - Google Patents

Info

Publication number
DE3532451C2
DE3532451C2 DE3532451A DE3532451A DE3532451C2 DE 3532451 C2 DE3532451 C2 DE 3532451C2 DE 3532451 A DE3532451 A DE 3532451A DE 3532451 A DE3532451 A DE 3532451A DE 3532451 C2 DE3532451 C2 DE 3532451C2
Authority
DE
Germany
Prior art keywords
coupling part
internal thread
laser
hardened
area
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
Application number
DE3532451A
Other languages
German (de)
English (en)
Other versions
DE3532451A1 (de
Inventor
Nicolangelo Amprodoco Rieti It Signori
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.)
Saipem SpA
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 DE3532451A1 publication Critical patent/DE3532451A1/de
Application granted granted Critical
Publication of DE3532451C2 publication Critical patent/DE3532451C2/de
Granted legal-status Critical Current

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)
  • Adornments (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
DE19853532451 1984-09-13 1985-09-11 Verfahren zum oberflaechenhaerten eines stirnbandes eines kupplungsteils mit innengewinde fuer stahlbohrstangen Granted DE3532451A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT22647/84A IT1176705B (it) 1984-09-13 1984-09-13 Procedimento perfezionato per l'indurimento superficiale dei giunti delle aste di perforazione e aste cosi' ottenute

Publications (2)

Publication Number Publication Date
DE3532451A1 DE3532451A1 (de) 1986-03-20
DE3532451C2 true DE3532451C2 (cs) 1987-10-22

Family

ID=11198819

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853532451 Granted DE3532451A1 (de) 1984-09-13 1985-09-11 Verfahren zum oberflaechenhaerten eines stirnbandes eines kupplungsteils mit innengewinde fuer stahlbohrstangen

Country Status (15)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450151B (sv) * 1985-11-21 1987-06-09 Ffv Transmission Ab Anordning med kontrollerad friktion samt forfarande for att erhalla kontrollerad friktion vid en sadan anordning
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
US6557654B1 (en) 1998-01-05 2003-05-06 Weatherford/Lamb, Inc. Drill pipe having a journal formed thereon
WO2005001234A1 (en) * 2003-06-30 2005-01-06 Todd Andrew Haines Sub-assembly for drill strings
DE102007044696A1 (de) * 2007-06-29 2009-01-08 Ks Kolbenschmidt Gmbh Schmelzbehandelter Muldenrand einer Kolben-Brennraummulde
JP4790767B2 (ja) * 2008-07-16 2011-10-12 川崎重工業株式会社 斜板式液圧回転機
SE535814C2 (sv) 2011-05-20 2013-01-02 Atlas Copco Secoroc Ab Gänganordning, gängförband samt borrsträngskomponent för slående bergborrning
FR3015546B1 (fr) 2013-12-20 2015-12-25 Vallourec Drilling Products France Element de garniture de forage dote d'une couche de rechargement amelioree
CN106761460A (zh) * 2017-03-15 2017-05-31 吉林大学 一种激光熔覆制备的石墨烯钻杆接头耐磨带

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920135C (de) * 1951-06-22 1954-11-15 Rheinische Roehrenwerke Ag Verfahren zur Herstellung verschleissfester Gestaengerohr-Vervinder und Muffen fuer OElfeldrohre
US3489620A (en) * 1967-03-01 1970-01-13 United States Steel Corp Method of processing sucker rods and resulting article
DE1783058A1 (de) * 1968-09-26 1971-02-18 Gerd Hoeptner Verfahren zum Haerten von Schneid- und Zerspanungswerkzeugen hoeherer Schneidenhaerte
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 (de) * 1983-12-03 1984-07-05 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Verfahren zur Herstellung verschleissfester Zylinderlaufflaechen von Brennkraftmaschinen

Also Published As

Publication number Publication date
ES8609491A1 (es) 1986-09-01
CA1253054A (en) 1989-04-25
DK413185A (da) 1986-03-14
ES547703A0 (es) 1986-09-01
IT1176705B (it) 1987-08-18
JPS6179725A (ja) 1986-04-23
GB2164358B (en) 1988-08-03
DE3532451A1 (de) 1986-03-20
AU4690685A (en) 1986-03-20
FR2570084A1 (fr) 1986-03-14
GB2164358A (en) 1986-03-19
GB8521740D0 (en) 1985-10-09
AU576383B2 (en) 1988-08-25
IT8422647A0 (it) 1984-09-13
NO853543L (no) 1986-03-14
PT81120B (pt) 1992-05-29
BR8504550A (pt) 1986-07-15
NZ213327A (en) 1987-05-29
NL8502505A (nl) 1986-04-01
DK413185D0 (da) 1985-09-11
BE903227A (fr) 1986-03-12
PT81120A (en) 1985-10-01

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee