GB1371640A - Method of making ball studs - Google Patents

Method of making ball studs

Info

Publication number
GB1371640A
GB1371640A GB5964571A GB5964571A GB1371640A GB 1371640 A GB1371640 A GB 1371640A GB 5964571 A GB5964571 A GB 5964571A GB 5964571 A GB5964571 A GB 5964571A GB 1371640 A GB1371640 A GB 1371640A
Authority
GB
United Kingdom
Prior art keywords
tempering
ball
carburization
bainite
ferrite
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
GB5964571A
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.)
Tokai TRW and Co Ltd
Original Assignee
Tokai TRW and Co Ltd
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 Tokai TRW and Co Ltd filed Critical Tokai TRW and Co Ltd
Publication of GB1371640A publication Critical patent/GB1371640A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1371640 Heat treating ball studs TOKAI TRW & CO Ltd 22 Dec 1971 [28 Dec 1970] 59645/71 Headings C7A C7N and C7U A ball stud 1 for a motor vehicle suspension or steering system formed from a carbon or low alloy steel containing 0À12 to 0À23%C is subjected to carburization BC, diffusion CD, quenching DE, and tempering FG. The ball only is then hardened by induction <SP>I</SP> so that the surface layer has a martensitic structure and the core comprises sorbite ferrite and bainite, the shank and threaded portion having a sorbitic surface and a core of sorbite bainite and ferrite. In a particular embodiment the steel contains by weight:- while carburization is carried out e.g. in propane, ,at 890 to 920‹C to produce a surface carbon content of 0À5 to 0À7%, over a depth of 0À3 to 0À6 mm., followed by quenching in oil. Tempering is effected at 420 to 430‹C while a final tempering at 150 to 200‹C may follow the induction hardening.
GB5964571A 1970-12-28 1971-12-22 Method of making ball studs Expired GB1371640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45119330A JPS5021153B1 (en) 1970-12-28 1970-12-28

Publications (1)

Publication Number Publication Date
GB1371640A true GB1371640A (en) 1974-10-23

Family

ID=14758791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5964571A Expired GB1371640A (en) 1970-12-28 1971-12-22 Method of making ball studs

Country Status (6)

Country Link
JP (1) JPS5021153B1 (en)
CA (1) CA943443A (en)
DE (1) DE2165105C3 (en)
FR (1) FR2120939A5 (en)
GB (1) GB1371640A (en)
IT (1) IT953227B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003046229A1 (en) * 2001-11-28 2003-06-05 Ejot Verbindungstechnik Gmbh & Co. Kg Fastening element made of a carbon-containing steel and method for the production thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498956B2 (en) * 1972-04-17 1988-11-25 Perrier Jean MANUFACTURING OF COLD FORGING PIVOTS USED IN CRUDE HITTING
US3849964A (en) * 1973-08-15 1974-11-26 F Briles Corrosion blocking fastener
JPS52145671U (en) * 1976-04-30 1977-11-04
JPS534339U (en) * 1976-06-29 1978-01-14
JPS53109145U (en) * 1977-02-08 1978-09-01
FR2916371B1 (en) * 2007-05-24 2010-02-26 Fwu Kuang Entpr Co Ltd PROCESS FOR PREPARING FORGED PARTS HAVING EXCELLENT TRACTION RESISTANCE AND ELONGATION FROM STEEL MAMINERY WIRES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003046229A1 (en) * 2001-11-28 2003-06-05 Ejot Verbindungstechnik Gmbh & Co. Kg Fastening element made of a carbon-containing steel and method for the production thereof

Also Published As

Publication number Publication date
CA943443A (en) 1974-03-12
DE2165105A1 (en) 1972-07-13
JPS5021153B1 (en) 1975-07-21
DE2165105B2 (en) 1974-08-15
IT953227B (en) 1973-08-10
FR2120939A5 (en) 1972-08-18
DE2165105C3 (en) 1975-04-17

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years