Research On The Technology Of Opposited-Lining-Ceramics By Means Of Redundant Heat Of Molten Steel

The Technology of Opposited-Lining-Ceramics by Means of Redundant Heat was adopted to enhance the antifriction of inside wall of the pump.After future experiments, we will make out a economic,machining easily,and antifrictional pump to solve the technical puzzle.Nano-powder of Al₂O₃,SiO₂,CaO and some ceramic powder were adopted as the metal-ceramic mixture powder.In order to assure having good integration between the base of pump and the compound ceramic layer,we adopted Fe powders as one of the raw material.The results showed that:When using molten aluminium to mould the samples,because of the low temperature, the experiment was unsuccessful.The molten iron and molten iron can mould the compound ceramic powder onto the moulding boards.The moulded samples made by the core sand superior to the moulded samples made by iron board were the best.The moulding result of the samples made by the high temperature pastern with 21.74wt%was superior to the samples made by the high temperature pastern with 25wt%.The average attrited loss of the samples C23,C33 and C43 were 0.20,0.25,0.28, which were inferior to the 45# steel.Watching the samples,the surface was very compact and even,which showed that the ceramic layer was distributed equably.The average attrited loss of the samples B23 made by the iron board was 0.075,the main reason was the particle of Al₂O₃ was surrounded by basic metal.They formed a whole,so antifriction of basic metal was enhanced.The photos of SEM showed that the ceramic layer reached 600μm,this increased the antifriction longevity of the basic metal.X-ray experiment indicated that there were Al_0.5Fe₃Si_0.5,Al_0.3Fe₃Si_0.7come into being after moulded.