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Copper alloy for laser cladding valve sheet

A copper alloy and laser melting technology, applied in laser welding equipment, metal processing equipment, metal material coating technology, etc., can solve problems such as large hardness deviation, inability to effectively disperse stress, matrix structure and hard phase interface cracks, etc. To achieve the effect of cost reduction

Pending Publication Date: 2021-04-20
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, cracks appear between the matrix structure and the hard phase interface under mechanical and thermal fatigue conditions due to contact and friction with the valve
This is because, since the hardness deviation between the matrix structure and the hard phase is large, the local stress generated under the fatigue environment is concentrated on the interface, but the size of the hard phase is coarse on the order of hundreds of μm, so it cannot be effectively Distribute stress

Method used

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  • Copper alloy for laser cladding valve sheet
  • Copper alloy for laser cladding valve sheet
  • Copper alloy for laser cladding valve sheet

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Embodiment Construction

[0019] Hereinafter, the present disclosure will be described in detail. However, the present disclosure is not limited or restricted by the exemplary embodiments, and the objects and effects of the present disclosure will be naturally understood or become apparent from the following description, and the objects and effects of the present disclosure are not limited only by the following description. Also, in the description of the present disclosure, when it is determined that the detailed description of known technologies related to the present disclosure will unnecessarily obscure the gist of the present disclosure, the detailed description thereof will be omitted.

[0020] For the process of forming the matrix structure and the hard phase, the following description can be referred to. The quinary liquid phase single-phase Cu-Ni-Si-Fe-Mo is separated into a Cu-rich liquid phase (including a small amount of Si and N, hereafter referred to as the liquid phase L 1 ) and Fe-Mo-r...

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Abstract

A composition of a copper alloy for a laser cladding valve sheet is disclosed. The copper alloy includes a matrix structure and a hard phase, wherein the copper alloy includes 12 to 24 wt % of Ni, 2 to 4 wt % of Si, 8 to 30 wt % of Fe, more than 5 wt % and less than 10 wt % of Mo, 2 to 10 wt % of Al, and the balance Cu. The interfacial delamination may be suppressed in a fatigue environment by micronizing the hard phase and the distribution thereof, thereby improving fatigue resistance and wear resistance.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2019-0129370 filed with the Korean Intellectual Property Office on October 17, 2019, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to a copper alloy for laser cladding a valve plate, and more particularly, to the composition of the copper alloy. Background technique [0004] Since the engine block made only of aluminum (Al) material is difficult to withstand the combustion explosion, thermal and mechanical shock transmitted from the engine valve, the valve plate made of Fe-based powder sintered material has been fabricated by pressing into the engine block. is used, and recently, in order to improve heat resistance and wear resistance, a method of directly cladding a Cu-based valve plate on an engine block by a laser cladding preparation method has been used. [0005] Sinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/00C23C24/10
CPCC22C9/06F02B77/02F01L3/04F01L2820/01C22C9/00Y02P10/25B23K20/008B23K26/34B23K26/352C22C30/02
Inventor 姜敏宇权纯佑李忠谚洪承贤金荣男
Owner HYUNDAI MOTOR CO LTD
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