GB577427A - Improvements in or relating to valve assemblages for internal-combustion engines - Google Patents

Improvements in or relating to valve assemblages for internal-combustion engines

Info

Publication number
GB577427A
GB577427A GB1956343A GB1956343A GB577427A GB 577427 A GB577427 A GB 577427A GB 1956343 A GB1956343 A GB 1956343A GB 1956343 A GB1956343 A GB 1956343A GB 577427 A GB577427 A GB 577427A
Authority
GB
United Kingdom
Prior art keywords
valve
alloy
aluminium
stem
heat
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
GB1956343A
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.)
Metallisation Ltd
Original Assignee
Metallisation 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 Metallisation Ltd filed Critical Metallisation Ltd
Priority to GB1956343A priority Critical patent/GB577427A/en
Publication of GB577427A publication Critical patent/GB577427A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • F01L3/04—Coated valve members or valve-seats

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

577,427. Valves. WESLAKE, H., BALLARD, W. E., and METALLISATION. Ltd. Nov. 23,1943, Nos: 19563/43 and 5292/44. [Class 7 (vi)] [Also in Group II] Any part of a valve which is liable to erosion or corrosion by burning is alloyed on its surface with a protective metal such as aluminium or silver. After an initial roughening treatment with sand blast &c. the part is coated by a spray gun with the aluminium or an aluminium-cadmium alloy containing not less than 0.3 per cent cadmium, to a depth of not less than 0.006 inch and the part and coating are heated to at least 800‹ C. to alloy them together. The alloy is cooled rapidly and subjected to a known tempering or normalising process. The heat treatment is carried out in an atmosphere which will oxidise the surface of the alloy. The surface is finally abraided slightly and may receive a polishing or burnishing treatment. As shown, the valve head 14 and exposed part 15 of the stem 22 are treated as also are the valve seat 16 and the top 17 of the valve guide. To prevent the guide from rubbing away the alloy on the stem, it is counterbored to provide some clearance at its upper end or the valve stem is reduced in diameter for this purpose. Parts not exposed to the hot gases may be coated without being subjected to the alloying heat treatment. If desired, the seating surface 13 of the valve head may be unprotected to improve its heat conducting properties and the valve seat 16 may be made of an alloy sold under Registered Trade Mark "Stellite" or "Bright Ray." The areas treated are so proportioned to the untreated areas of the valve that the rate of heat dissipation from the latter exceeds the rate of heat absorption the former.
GB1956343A 1943-11-23 1943-11-23 Improvements in or relating to valve assemblages for internal-combustion engines Expired GB577427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1956343A GB577427A (en) 1943-11-23 1943-11-23 Improvements in or relating to valve assemblages for internal-combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1956343A GB577427A (en) 1943-11-23 1943-11-23 Improvements in or relating to valve assemblages for internal-combustion engines

Publications (1)

Publication Number Publication Date
GB577427A true GB577427A (en) 1946-05-17

Family

ID=10131463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1956343A Expired GB577427A (en) 1943-11-23 1943-11-23 Improvements in or relating to valve assemblages for internal-combustion engines

Country Status (1)

Country Link
GB (1) GB577427A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881750A (en) * 1956-03-29 1959-04-14 Gen Motors Corp Valve
US2885304A (en) * 1954-09-29 1959-05-05 Gen Motors Corp Method of aluminum coating
US3033705A (en) * 1956-08-13 1962-05-08 Gen Motors Corp Method of applying an aluminum coating on ferrous metal article
DE2856232A1 (en) * 1978-12-27 1980-07-17 Teves Thompson Gmbh Mushroom valve for exhaust gas turbocharger - has hard metal seat on base covered with corrosion and temp.-resistant layer
DE3928579A1 (en) * 1988-08-30 1990-03-08 Toyota Motor Co Ltd FIRING ROOM FOR AN INTERNAL COMBUSTION ENGINE
DE4111381A1 (en) * 1991-04-09 1992-10-15 Kloeckner Humboldt Deutz Ag Valve seat for internal combustion engine - has plastically deformable coating for running=in period
WO2003089768A1 (en) * 2002-04-20 2003-10-30 Mahle Ventiltrieb Gmbh Moveable valve sealing body exposed to hot gases

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885304A (en) * 1954-09-29 1959-05-05 Gen Motors Corp Method of aluminum coating
US2881750A (en) * 1956-03-29 1959-04-14 Gen Motors Corp Valve
US3033705A (en) * 1956-08-13 1962-05-08 Gen Motors Corp Method of applying an aluminum coating on ferrous metal article
DE2856232A1 (en) * 1978-12-27 1980-07-17 Teves Thompson Gmbh Mushroom valve for exhaust gas turbocharger - has hard metal seat on base covered with corrosion and temp.-resistant layer
DE3928579A1 (en) * 1988-08-30 1990-03-08 Toyota Motor Co Ltd FIRING ROOM FOR AN INTERNAL COMBUSTION ENGINE
DE4111381A1 (en) * 1991-04-09 1992-10-15 Kloeckner Humboldt Deutz Ag Valve seat for internal combustion engine - has plastically deformable coating for running=in period
WO2003089768A1 (en) * 2002-04-20 2003-10-30 Mahle Ventiltrieb Gmbh Moveable valve sealing body exposed to hot gases

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