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High-temperature alloy for casting engine valve

A high-temperature alloy, solidification temperature technology, applied in the direction of engine components, machines/engines, lift valves, etc., can solve problems such as precipitation

Pending Publication Date: 2022-06-28
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the alloy composition disclosed in the '465 patent may be prone to precipitation of M at high temperature 6 C carbide

Method used

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  • High-temperature alloy for casting engine valve
  • High-temperature alloy for casting engine valve
  • High-temperature alloy for casting engine valve

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Embodiment Construction

[0013] figure 1 An exemplary cross-section of the internal combustion engine 10 is shown. Engine 10 may be any type of engine, such as a two- or four-stroke diesel or gasoline engine, a two- or four-stroke gas-fueled engine, or a two- or four-stroke two-stroke fuel-powered engine. Engine 10 may be a compression ignition engine or a spark ignition engine. Engine 10 may include, among other things, an engine block 12 at least partially defining cylinders 14 . Although in figure 1 Only one cylinder 14 is shown, but it is contemplated that engine 10 may include any number of cylinders 14 . Also, the cylinders 14 in the engine 10 may be arranged in an "axial" configuration, a "V" configuration, a opposed piston configuration, or in any other suitable configuration.

[0014] Piston 16 may be slidably disposed within cylinder 14 . A cylinder head 18 may be connected to the engine block 12 to enclose one end of the cylinder 14 . The piston 16 together with the cylinder head 18 m...

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Abstract

A superalloy is disclosed. The superalloy may have, by weight: about 9.0 to 10.0% by weight of Co, a maximum of about 0.25% by weight of Fe, about 8.0 to 9.0% by weight of Cr, about 4.75 to 5.50% by weight of Al, about 1.0 to 1.5% by weight of Ti, about 0 to 2.0% by weight of Mo, about 6.0 to 9.0% by weight of W, about 0.12 to 0.18% by weight of C, about 0.01 to 0.03% by weight of Zr, about 0.005 to 0.015% by weight of B, about 0.5 to 1.5% by weight of Ta, the balance Ni and unavoidable impurities.

Description

[0001] This application is a divisional application of a patent application with an application date of December 21, 2017, an application number of 201711396877.7, and the title of "Superalloy for Casting Engine Valves". technical field [0002] The present invention relates generally to superalloys, and more particularly to superalloys for casting engine valves. Background technique [0003] Internal combustion engines typically include one or more valves that allow fresh air to enter the engine's combustion chambers and / or allow exhaust gases to exit the combustion chambers. These engine valves, especially exhaust valves, are subjected to very high temperatures during engine operation. For example, valves may typically reach temperatures of 800°C or higher (eg, 800-850°C) due to the heat released by the combustion of fuel within the combustion chamber, albeit for a small fraction of the overall life of the engine. Traditional materials used to manufacture engine valves ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05F16K51/00
CPCC22C19/057F16K51/00C22C19/056F01L3/00F01L3/02F01L3/20
Inventor M·D·维利兹C·邱T·J·雅尼亚克
Owner CATERPILLAR INC