THE STUDY OF INOCULATING HING SPEED STEEL GUIDES

In a wire rod mill,the rolling mill guides are a key spare parts, Some property as excellent wear resistance, fracture resistance, dead burning resistance and hot shock resistance are required. Ordinary rolling mill guides made by the high Nickel Chromium cast alloy and the high Chromium cast iron don't meet above requirements. They have short service life and fast replacing cycles.The working rate of rolling mill is decreased.The working strength of the worker is increased. High speed steel(HSS) has high hardness,good red hardness and excellent wear resistance.The eutectic carbides in cast HSS are distributed into network.The cast HSS has high brittlencess.By means of adjusting HSS compositions and inoculating HSS with RE-Mg-Ti,the shape and distribution of eutectic carbides can be improved,impact toughness of HSS can be obviously increased.During using in a wire rod mill,inoculating HSS rolling mill guides don't stick steel and fracture,their wear resistance is more excellent than ordinary rolling mill guides.