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Abrasion-resistant valve seat

A valve seat and main body technology, which is applied in the direction of lift valves, engine components, machines/engines, etc., can solve problems such as not being widely used, ceramic material molding, and cutting processing difficulties, so as to achieve good product technical stability and improve service life , the effect of saving resources

Inactive Publication Date: 2010-11-10
江苏仪征威龙活塞环有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ceramic materials are difficult to form and cut, so they have not been widely used yet.

Method used

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Experimental program
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Effect test

Embodiment Construction

[0014] As shown in the figure, on the valve seat main body 1 obtained by casting the blank, grinding the end face, rough turning the outer circle, and rough boring the inner circle, the inner circle of the sealing cone surface matched with the valve is evenly coated with a layer of cermet Powder, using laser alloying method, forms ceramic particle reinforced composite coating 2 on the sealing cone surface of valve seat main body 1, its thickness is 0.5 ~ 1.0mm, and then the semi-finished product is finished turning the outer circle, fine boring inner circle, grinding Outer circle, outer corner chamfering, final inspection, and oiling to form the final piston ring.

[0015] The Rockwell hardness of the ceramic particle reinforced composite coating 2 of the present invention is 40-58HRC after testing, and the difference in weaving hardness of the composite coating of the same valve seat is not more than 3HRC units.

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Abstract

The invention discloses an abrasion-resistant valve seat, and relates to the technical field of valve seat production. The abrasion-resistant valve seat comprises a valve seat main body made of a metal material, and a sealed conical surface of the valve seat main body is provided with a ceramic granule reinforced composite coating. The abrasion-resistant valve seat can realize high-performance surface modification on a low-grade material, and the composite coating is in firm metallurgical connection with an alloy cast iron base material. Meanwhile, the low-grade alloy cast iron material realizes high-performance surface modification; and the abrasion-resistant valve seat achieves optimal combination of low cost of a part and high performance of a working surface, saves resources, and has the advantages of prolonging of the integral service life of the valve seat and good technical stability of products.

Description

technical field [0001] The invention relates to the technical field of valve seat production. Background technique [0002] The research and production of valve seats at home and abroad have been committed to two directions: ① design and improve the material of the valve seat and adopt appropriate heat treatment to obtain the best mechanical properties of the valve seat body; ② develop various surface modifications of the valve seat Technology, to further carry out innovative research on coating materials and processes, and to reduce wear as the guide, develop or apply new coating materials and coating processes to manufacture dense, heat-resistant, wear-resistant, and oxidation-resistant valve seat coatings, In order to achieve the purpose of reducing the sinkage of the valve (seat). The latter has become the main research direction of valve seat technology progress at home and abroad in recent years. [0003] At present, valve seat materials at home and abroad can be sum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L3/04
Inventor 马明星朱有慧张伟明孙康和张红军刘文今钟敏霖
Owner 江苏仪征威龙活塞环有限公司
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