GB618946A - Improvements in and relating to cemented carbide piston rings - Google Patents

Improvements in and relating to cemented carbide piston rings

Info

Publication number
GB618946A
GB618946A GB12328/45A GB1232845A GB618946A GB 618946 A GB618946 A GB 618946A GB 12328/45 A GB12328/45 A GB 12328/45A GB 1232845 A GB1232845 A GB 1232845A GB 618946 A GB618946 A GB 618946A
Authority
GB
United Kingdom
Prior art keywords
strip
grooves
sintering
inch
reheating
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
GB12328/45A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB618946A publication Critical patent/GB618946A/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
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

618,946. Making piston rings. BRITISH THOMSON-HOUSTON CO., Ltd. May 16, 1945, No. 12328. Convention date, May 19, 1944. [Class 83 (ii)] [Also in Group XXVI] A piston ring of cemented carbide having capillary grooves in the outer edge is made by extruding a strip of the composition, rolling the grooves into one face, sintering it and then reheating at a temperature of about 1350‹ C. and bending it to form an open ring. The reheating and bending may be carried out as described in Specification 588,305 or, alternatively, the strip may be heated by highfrequency induction heating or by a flame. The finished ring has an average density preferably not exceeding that of steel or cast iron and its weight may be controlled by making it hollow as shown in the cross-sections, Figs. 3 and 4, the strip in such a case being extruded around a mandrel. A series of parallel oil grooves 7 or 8 are formed either circumferentially or helically on the outer face, by means of a knurled roller before the sintering of the strip. If the helical grooves are approximately 1 inch long Î .01 inch Î .01 inch it is stated that no gas leak occurs. In a modified method, the extruded strip is wound to circular shape in a groove formed in a mandrel before sintering, a coating of paraffin being used on the inside of the groove to prevent breakage of the strip during shrinking.
GB12328/45A 1944-05-19 1945-05-16 Improvements in and relating to cemented carbide piston rings Expired GB618946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618946XA 1944-05-19 1944-05-19

Publications (1)

Publication Number Publication Date
GB618946A true GB618946A (en) 1949-03-02

Family

ID=22038835

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12328/45A Expired GB618946A (en) 1944-05-19 1945-05-16 Improvements in and relating to cemented carbide piston rings

Country Status (1)

Country Link
GB (1) GB618946A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254905A (en) * 1991-04-15 1992-10-21 Ford Motor Co Piston ring
US20130206096A1 (en) * 2012-02-10 2013-08-15 Keith Hampton Piston and cooled piston ring therefor and method of construction thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254905A (en) * 1991-04-15 1992-10-21 Ford Motor Co Piston ring
US20130206096A1 (en) * 2012-02-10 2013-08-15 Keith Hampton Piston and cooled piston ring therefor and method of construction thereof
US8955487B2 (en) * 2012-02-10 2015-02-17 Federal-Mogul Corporation Piston and cooled piston ring therefor and method of construction thereof

Similar Documents

Publication Publication Date Title
KR860009147A (en) Manufacturing method of cold rolled steel sheet with excellent deep drawing property
GB1151663A (en) Asbestos Millboard Conveyor Rolls for High Temperature Use
SE7605817L (en) CRYSTALL-ORIENTED SILK STEEL AND MANUFACTURE thereof
GB618946A (en) Improvements in and relating to cemented carbide piston rings
US3769671A (en) Manufacture of rings for rolling bearings
US3600795A (en) Method of soldering
GB417774A (en) Improvements in the manufacture of raceway members for roller bearings
GB1313370A (en) Hot expanding of hollow metal billets
GB1388721A (en) Method of manufacturing hollow bodies and coatings of polytetrafluorethylene and the products obtained by said method
US2579108A (en) Quartz working process and article
SU776687A1 (en) Apparatus for applying lubricant on tube inner surface
GB551232A (en) Improvements in the manufacture of piston and like packing rings
JPS5247512A (en) Production process of high tensile cold rolled steel sheet having litt le surface anisotropy
FR2368677A2 (en) High temp. induction furnace - with graphite heating element pierced with several heating chamber borings, used esp. for prodn. of optical fibres
GB1026828A (en) Piston ring
SU83851A1 (en) A method of manufacturing bimetallic and metal-ceramic bearing bushings
JPS52136812A (en) Roll for process line
ES375235A1 (en) Method of toughening glass in an oil bath
US2025001A (en) Butt welding pipe
SU461136A1 (en) The method of decarburization of electrical steel
SU119452A1 (en) Method for making abrasive products
GB588305A (en) Improvements in and relating to resilient cemented carbide articles and methods and apparatus of manufacturing them
GB565015A (en) Improvements in or relating to composite articles, such as bimetallic billets, and methods of and apparatus for making the same
Semenov Production of Heat-Resistant, Antifriction and Wear-Resistant Coatings by the Method of Contact Eutectic Melting
GB548821A (en) Improvements in the manufacture of scraper piston rings