GB1237238A - Improvements in or relating to pistons - Google Patents

Improvements in or relating to pistons

Info

Publication number
GB1237238A
GB1237238A GB5175768A GB5175768A GB1237238A GB 1237238 A GB1237238 A GB 1237238A GB 5175768 A GB5175768 A GB 5175768A GB 5175768 A GB5175768 A GB 5175768A GB 1237238 A GB1237238 A GB 1237238A
Authority
GB
United Kingdom
Prior art keywords
piston
skirt
coating
light metal
oct
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
GB5175768A
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.)
Federal Mogul Bradford Ltd
Original Assignee
Hepworth and Grandage 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 Hepworth and Grandage Ltd filed Critical Hepworth and Grandage Ltd
Priority to GB5175768A priority Critical patent/GB1237238A/en
Publication of GB1237238A publication Critical patent/GB1237238A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/02—Bearing surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0403—Refractory metals, e.g. V, W
    • F05C2201/0406—Chromium

Abstract

1,237,238. Making pistons. HEPWORTH & GRANDAGE Ltd. 17 Oct., 1969 [31 Oct., 1968], No. 51757/68. Heading B3A. [Also in Division F2] A light metal piston has at least the thrust bearing areas of its skirt coated with a spray deposit of chromium. The coating which may be between 0À0005 and 0À004 inch thick may extend over the whole of the outer peripheral surface of the skirt or be restricted to the thrust areas. The or each coating may be subdivided axially into spaced bands or segments. The coating may additionally extend over the ring groovecarrying portion of the piston. In making the piston, a piston blank is produced from light metal, e.g., by forging, pressing or casting, and the skirt is first ground or machined or otherwise formed to the required shape, then spray-coated with chromium and finally ground or otherwise finished. A piston according to the invention is stated to be suitable for use directly in a light metal cylinder bore.
GB5175768A 1968-10-31 1968-10-31 Improvements in or relating to pistons Expired GB1237238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5175768A GB1237238A (en) 1968-10-31 1968-10-31 Improvements in or relating to pistons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5175768A GB1237238A (en) 1968-10-31 1968-10-31 Improvements in or relating to pistons

Publications (1)

Publication Number Publication Date
GB1237238A true GB1237238A (en) 1971-06-30

Family

ID=10461261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5175768A Expired GB1237238A (en) 1968-10-31 1968-10-31 Improvements in or relating to pistons

Country Status (1)

Country Link
GB (1) GB1237238A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356800A (en) * 1978-07-27 1982-11-02 Karl Schmidt Gmbh Liquid-cooled, composite piston for internal-combustion engines
US4987867A (en) * 1989-11-06 1991-01-29 Izumi Industries, Ltd. Piston for internal combustion engines
WO1998017931A1 (en) * 1996-10-23 1998-04-30 Tetra Laval Holdings & Finance S.A. A tribological element
US9421740B2 (en) * 2012-05-10 2016-08-23 Korea Atomic Energy Research Institute Zirconium alloy for improving resistance to oxidation at very high temperature and fabrication method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356800A (en) * 1978-07-27 1982-11-02 Karl Schmidt Gmbh Liquid-cooled, composite piston for internal-combustion engines
US4987867A (en) * 1989-11-06 1991-01-29 Izumi Industries, Ltd. Piston for internal combustion engines
WO1998017931A1 (en) * 1996-10-23 1998-04-30 Tetra Laval Holdings & Finance S.A. A tribological element
US9421740B2 (en) * 2012-05-10 2016-08-23 Korea Atomic Energy Research Institute Zirconium alloy for improving resistance to oxidation at very high temperature and fabrication method thereof

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