A Study of Ceramic-lined Compound Copper Pipe Prepared by SHS Process

摘要

Self-propagating high-temperature syn-thesis(SHS) is a new kind of material synthesis technique, has characteristics with respect to low energy consumption, short synthetizing time, high production quantity, high product purity and no environmental pollution. SHS combines with centrifugal casting, ceramic-lined compound copper pipe(CLCCP) can be produced, the inner surface of copper pipe can produce ceramic coatings having good wear and corrosion resistance. In order to increase the densification degree, combining strength and toughness of ceramic layer, the effects of additives such as SiO_2, CrO_3, Na_2B_4O_7 and ZrO_2 are researched, adding SiO_2 and CrO_3 in thermite, the densification degree of ceramic layer increases, adding Na_2B_4O_7 in thermite can increase combining strength, adding ZrO_2 in thermite can increase the toughness of ceramic layer. CLCCP is used in tubular billet crystallizer, having excellent service effects and decreasing the production cost of tubular billet.