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1. WO2016148806 - SINGLE CRYSTAL ENGINE VALVE

Publication Number WO/2016/148806
Publication Date 22.09.2016
International Application No. PCT/US2016/017485
International Filing Date 11.02.2016
IPC
F01L 3/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
3Lift valves, 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
02Selecting particular materials for valve members or valve seats; Valve members or valve seats composed of two or more materials
F01L 3/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
3Lift valves, 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
F01L 3/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
3Lift valves, 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
20Shapes or constructions of valve members, not provided for in preceding subgroups of this group
CPC
B23K 11/16
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
11Resistance welding; Severing by resistance heating
16taking account of the properties of the material to be welded
B23K 20/129
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
20Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
12the heat being generated by friction; Friction welding
129specially adapted for particular articles or workpieces
B23K 20/22
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
20Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
22taking account of the properties of the materials to be welded
B23K 2103/04
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2103Materials to be soldered, welded or cut
02Iron or ferrous alloys
04Steel or steel alloys
B23K 2103/08
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2103Materials to be soldered, welded or cut
08Non-ferrous metals or alloys
B23K 2103/18
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2103Materials to be soldered, welded or cut
18Dissimilar materials
Applicants
  • CATERPILLAR INC. [US]/[US]
Inventors
  • VELIZ, Mark
  • GEISSLER, Mark
Agents
  • LUNDQUIST, Steve D.
Priority Data
14/660,01817.03.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SINGLE CRYSTAL ENGINE VALVE
(FR) SOUPAPE DE MOTEUR EN MONOCRISTAL
Abstract
(EN)
A valve (100) for use in an internal combustion engine (200) is disclosed. The valve (100) includes a stem (104) friction welded to a head portion (116). The head portion (116) is cast from a single crystal metal (306) using a casting process that creates little or no grain boundaries. The single crystal metal (306) can be a nickel based superalloys such as CMSX-4, CMSX 3, Rene N5, and Rene N6. By having little or no grain boundaries, defects that occur in other types of casting material, such as large numbers of grain boundaries can be minimized. This allows the head portion (116) and particularly the combustion face (114) to withstand an operating temperature in the combustion chamber (208) in excess of 850C.
(FR)
La présente invention concerne une soupape (100) destinée à être utilisée dans un moteur à combustion interne (200). La soupape (100) comprend une tige (104) soudée par friction à une partie de tête (116). La partie de tête (116) est coulée en un métal monocristallin (306) selon un processus de coulage qui ne crée pas, ou peu, de joints de grains. Le métal monocristallin (306) peut être un superalliage à base de nickel, tel CMSX-4, CMSX 3, Rene N5 et Rene N6. Comme il n'y a pas, ou peu, de joints de grains, il est possible de réduire à un minimum les défauts qui apparaissent dans d'autres types de matériau de coulage, par exemple de grands nombres de joints de grains. La partie de tête (116), en particulier la face de combustion (114), peut donc résister à une température de fonctionnement dans la chambre de combustion (208) supérieure à 850C.
Also published as
GB1716114.2
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