GB1191858A - Method of Increasing the Fatique Strength of Hardened Workpieces having Curved Surfaces - Google Patents

Method of Increasing the Fatique Strength of Hardened Workpieces having Curved Surfaces

Info

Publication number
GB1191858A
GB1191858A GB4151267A GB4151267A GB1191858A GB 1191858 A GB1191858 A GB 1191858A GB 4151267 A GB4151267 A GB 4151267A GB 4151267 A GB4151267 A GB 4151267A GB 1191858 A GB1191858 A GB 1191858A
Authority
GB
United Kingdom
Prior art keywords
hardened
strength
increasing
curved surfaces
sept
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
GB4151267A
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of GB1191858A publication Critical patent/GB1191858A/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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

1,191,858. Altering physical properties. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. 12 Sept., 1967 [24 Sept., 1966], No. 41512/67. Heading B3V. A method of incresing the fatigue strength of a hardened or hardened and finish-machined workpiece having a curved surface subjected to pressing and sliding stresses, e.g. a gear-wheel or the raceway of a bearing, comprises shot peening the curved surface to increase its strength and produce a residual compressive stress after hardening or hardening and finish-machining. For brittle materials, e.g. high-carbon bearing steels, hardness may be reduced by tempering before shot peening.
GB4151267A 1966-09-24 1967-09-12 Method of Increasing the Fatique Strength of Hardened Workpieces having Curved Surfaces Expired GB1191858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ0012435 1966-09-24

Publications (1)

Publication Number Publication Date
GB1191858A true GB1191858A (en) 1970-05-13

Family

ID=7622520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4151267A Expired GB1191858A (en) 1966-09-24 1967-09-12 Method of Increasing the Fatique Strength of Hardened Workpieces having Curved Surfaces

Country Status (3)

Country Link
DE (1) DE1558022B2 (en)
GB (1) GB1191858A (en)
SE (1) SE333158B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2361330C2 (en) * 1973-12-08 1983-11-24 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Process for the production of cylindrical rolling elements
CH659414A5 (en) * 1983-08-02 1987-01-30 Grob Ernst Fa METHOD AND DEVICE FOR PRODUCING HARDENED GEARS.
DE68921329T2 (en) * 1989-01-06 1995-11-09 Eaton Corp Process for the production of ring gears and ring wheel produced by this process.
DE19502893C1 (en) * 1995-01-31 1996-09-19 Hammer Lit Gmbh Surface-finishing of corrosion resistant metal (alloy) objects
DE102008035585A1 (en) * 2008-07-31 2010-02-04 Rolls-Royce Deutschland Ltd & Co Kg Method for producing metallic components
DE102011109475A1 (en) * 2011-08-04 2013-02-07 Daimler Ag Producing component e.g. friction ring of brake disc for motor vehicle, comprises partially providing a surface of a component body with a coating by a thermal coating process, and plastically deforming the coating by a machining process

Also Published As

Publication number Publication date
SE333158B (en) 1971-03-08
DE1558022B2 (en) 1971-04-29
DE1558022A1 (en) 1970-02-19

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees