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首页> 外文期刊>Transactions of Nonferrous Metals Society of China >Development of new type of wear and crack resistant hardfacing electrode
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Development of new type of wear and crack resistant hardfacing electrode

机译：新型耐磨抗裂堆焊焊条的研制

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摘要

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 microstruc-ture 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 - 5 μm 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.
机译：通过使用H08A裸电极和钛铁，金红石，石墨，碳酸钙和氟化钙的涂层助焊剂，开发了一种新型的耐磨抗裂堆焊电极。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射仪（XRD）和磨损试验研究了沉积层的组织和磨损性能。结果表明，在焊接过程中，钛铁或金红石与石墨之间通过直接冶金反应生成了TiC颗粒。尺寸在3-5μm范围内的TiC颗粒分散在板条马氏体和残余奥氏体的基体中。与D618和D667堆焊电极相比，新型堆焊电极的沉积层具有更好的耐磨性和抗裂性。

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