VALVE AND VALVE SEAT ASSEMBLY - NIPPON STEEL CORP

Title:

VALVE AND VALVE SEAT ASSEMBLY

Document Type and Number:

Japanese Patent JPH06167206

Kind Code:

A

Abstract:

PURPOSE: To provide a combination, which is suitably available for a high performance engine, of a titanium alloy valve and a valve seat.

CONSTITUTION: A titanium alloy hardened layer, which is made by solution treatment of oxygen, nitrogen, or oxygen and nitrogen and has Vickers hardness of 600 or more and thickness of 3μm-25μm, is formed on a face part 2 of a titanium alloy valve. The valve face part, the valve, and a valve seat consisting of iron alloy, which consists of carbon of 0.4-1.5%, at least one element, which is selected from a group consisting of copper, cobalt, and nickel, of 0.5-10.0%, and iron of the rest substantially and has Vickers hardness Hv adjusted in the 170-350 range, are combined for using the valve 1 and the valve seat.

Inventors:

TAKAYAMA ISAMU

Application Number:

JP5424593A

Publication Date:

June 14, 1994

Filing Date:

March 15, 1993

Export Citation:

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Assignee:

NIPPON STEEL CORP

International Classes:

F01L3/02; (IPC1-7): F01L3/02

Attorney, Agent or Firm:

Hiroaki Tamura (1 outside)

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