Development of new type of wear and crack resistant hardfacing electrode^①

来源期刊：中国有色金属学报(英文版)2004年第4期

论文作者：王新洪 宋思利 邹增大 曲仕尧

文章页码：660 - 664

Key words：hardfacing electrode; TiC; wear resistance; crack resistance

Abstract: By using H08A bare electrode and the coating fluxes of ferrotitanium, rutile, graphite, calcium carbonate and calcium fluoride, a new type of wear and crack resistant hardfacing electrode was developed. The microstructure and wear properties of deposited layer were studied by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractometry(XRD) and wear test. The results indicate that TiC particles are produced by direct metallurgical reaction between ferrotitanium or rutile and graphite during welding process. TiC particles with sizes in the range of 3 5μm are dispersed in the matrix of lath martensite and retained austenite. The deposited layer of the new type of hardfacing electrode possesses better wear and crack resistance than that of D618 and D667 hardfacing electrodes.