HIGH SPEED STEEL CLADDING BY PTA - INFLUENCE OF PARAMETERS

被引：0

作者：

Rohan, Pavel ^{[1
]}

Kramar, Tomas ^{[1
]}

Kovanda, Karel ^{[1
]}

Urban, Jan ^{[1
]}

机构：

[1] Czech Tech Univ, Fac Mech Engn, Prague, Czech Republic

来源：

METAL 2016: 25TH ANNIVERSARY INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS | 2016年

关键词：

Pulsed PTA; PTA surfacing; high speed steel; microhardness; tribology; WEAR PROPERTIES; MICROSTRUCTURE;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

PTA surfacing is widely used technology of increasing lifespan and wear resistant characteristics of machine components. There is a wide range of alloys which can be used as filler material; however, plasma cladding of High Speed Steel (HSS) is not yet frequently used. HSS's are the materials for fabrication of tools in machining, forming, forging and in other applications where high wear resistance is needed. The deposit tested in this study was cladded with three different frequencies of plasma current. Two-layer deposits were studied metallographically and tribologically. It was found that hardness of deposits is higher than 750HV, and structure contains finely distributed carbides of vanadium, chromium, molybdenum and tungsten. Tribological testing was performed on dry sand/rubber wheel apparatus and it was found that wear resistance depends on frequency of plasma current.

引用

页码：946 / 950

页数：5

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