GB1219364A - Method and apparatus for improving the torsional fatigue strength of crankshafts - Google Patents

Method and apparatus for improving the torsional fatigue strength of crankshafts

Info

Publication number
GB1219364A
GB1219364A GB7137/68A GB713768A GB1219364A GB 1219364 A GB1219364 A GB 1219364A GB 7137/68 A GB7137/68 A GB 7137/68A GB 713768 A GB713768 A GB 713768A GB 1219364 A GB1219364 A GB 1219364A
Authority
GB
United Kingdom
Prior art keywords
inductors
shaft
hardened
oil
hole
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
GB7137/68A
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.)
SMS Elotherm GmbH
Original Assignee
AEG Elotherm GmbH
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 AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Publication of GB1219364A publication Critical patent/GB1219364A/en
Expired 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1,219,364. Induction heating. AEG-ELOTHERM G.m.b.H. 13 Feb., 1968 [6 Oct., 1967], No. 7137/68. Heading H5H. [Also in Division C7] A crankshaft having an oil-hole in a main bearing portion or in a crankpin is given improved torsional fatigue properties by induction hardening the relevant portion of the shaft so that a hardened surface layer is produced which increases in depth towards the oil hole. The depth may be such that the internal surface of the oil-hole is hardened along its entire length, or only along a part thereof. Apparatus consists of two inductors, one of which produces a heated zone extending over a part only of the surface to be hardened while the other heats the whole of that surface, and means for successively energizing the two inductors. As illustrated, inductor 7 is first energized for a period t 1 while the shaft 6 is rotating, and inductor 8 is then energized, preferably at a higher frequency, for a period t 2 . Finally the shaft is quenched by liquid or gas. The two inductors may be contained in the same easing, and may be independently controllable as to time frequency and current.
GB7137/68A 1967-10-06 1968-02-13 Method and apparatus for improving the torsional fatigue strength of crankshafts Expired GB1219364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0057003 1967-10-06

Publications (1)

Publication Number Publication Date
GB1219364A true GB1219364A (en) 1971-01-13

Family

ID=6940863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7137/68A Expired GB1219364A (en) 1967-10-06 1968-02-13 Method and apparatus for improving the torsional fatigue strength of crankshafts

Country Status (4)

Country Link
US (1) US3510928A (en)
DE (1) DE1583329B1 (en)
FR (1) FR1553456A (en)
GB (1) GB1219364A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366572A (en) * 2000-06-07 2002-03-13 Honda Motor Co Ltd A method and tool for hardening a workpiece with a hole
DE10152092B4 (en) * 2000-10-23 2004-08-05 Kabushiki Kaisha Kakuta Tekkousho Crankshaft and manufacturing process therefor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623128A (en) * 1968-02-02 1971-11-23 Aeg Elotherm Gmbh Apparatus for improving the torsional fatigue strength of crankshafts
DE2138599C2 (en) * 1971-08-02 1983-02-03 Daimler-Benz Ag, 7000 Stuttgart Process for surface hardening of crankshafts for motor vehicles
US3824659A (en) * 1973-03-05 1974-07-23 Maschf Augsburg Nuernberg Ag Crankshaft with hardened transition portions and its manufacture
AT412666B (en) * 2003-06-04 2005-05-25 Jenbacher Ag WORKPIECE, ESPECIALLY CRANKSHAFT
US20140260787A1 (en) * 2013-03-18 2014-09-18 Electro-Motive Diesel, Inc. Selectively strengthened crankshaft

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800809A (en) * 1953-09-04 1957-07-30 West Bend Aluminum Co Induction hardened crankpins
DE1527508B2 (en) * 1964-07-24 1971-07-22 PROCESS FOR HARDENING A CRANKSHAFT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2366572A (en) * 2000-06-07 2002-03-13 Honda Motor Co Ltd A method and tool for hardening a workpiece with a hole
GB2366572B (en) * 2000-06-07 2003-01-08 Honda Motor Co Ltd Method of hardening workpiece with hole, and assistive tool for use therein
US6648995B2 (en) 2000-06-07 2003-11-18 Honda Giken Kogyo Kabushiki Kaisha Method of quenching workpiece with hole, assistive tool for use in quenching, and crankshaft
DE10152092B4 (en) * 2000-10-23 2004-08-05 Kabushiki Kaisha Kakuta Tekkousho Crankshaft and manufacturing process therefor

Also Published As

Publication number Publication date
US3510928A (en) 1970-05-12
FR1553456A (en) 1969-01-10
DE1583329B1 (en) 1970-08-27

Similar Documents

Publication Publication Date Title
GB1461247A (en) Hardening process for crankshafts
GB1055085A (en) Method of increasing the useful life of paired members co-operating in rolling contact
GB1219364A (en) Method and apparatus for improving the torsional fatigue strength of crankshafts
DE3265839D1 (en) Method and device for induction-hardening elongated thin-walled workpieces
US3257865A (en) Crankshafts
GB1079468A (en) Method of producing a crankshaft
GB1223960A (en) Universal joint for power transmissions and a method of its heat treatment
JPS5477316A (en) Manufacturing method of drive shaft for rotary compressor
MX151639A (en) IMPROVED METHOD FOR PRODUCING HARDENED VALVE SEATS FOR MACHINE COMPONENTS SUCH AS INTERNAL COMBUSTION MACHINES OR SIMILAR
US3623128A (en) Apparatus for improving the torsional fatigue strength of crankshafts
DE3763560D1 (en) METHOD FOR PRODUCING ROLLED STEEL PRODUCTS.
DE3874878D1 (en) METHOD FOR THE HEAT TREATMENT OF LOW-MELTING METAL.
DE2226530B2 (en) Induction hardening of crankshafts - using two separate operations for hardening the bearing surfaces and their fillets
JPS5719320A (en) Heat treatment of spheroidal graphite cast iron
RU2673900C1 (en) Method of repairing strengthened by induction hardening crankshafts of internal combustion engines
Mingji Experiment on the Optimum Technological Parameters for Surface Hardening on Crankshaft
Tiziani et al. CO sub 2 Laser Hardening of Cast Iron by Surface Melting
JPH0116759Y2 (en)
Kaufmann et al. The effect of hardening parameters on the resistance to oscillations of deep-forged parts
SU1668427A1 (en) Method for hardening of rails out of carbon steel
Vaughn Induction Hardening as Applied to FARM MACHINERY
SU122177A3 (en) Method for stabilizing the power consumption of a generator during high-frequency quenching of metal products
SU177083A1 (en) Steel for making surface-hardened parts
SU121139A1 (en) Heating thread rollers with high frequency currents
JPS59110720A (en) Heat treatment of cast iron