Different ceramic wear-resistant elbow forming methods according to working conditions
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Depending on the working conditions, the production process is also different, and the direct pasting method, bolt mounting method or one-piece molding method can be used. Production process: Ceramic lined composite steel pipe is * * It is a new composite material with international advanced level that was successfully developed and industrialized in the high-tech "863" plan. The tube is composed of three layers: ceramic, transition layer and steel from the inside to the outside. The ceramic layer is a dense steel jade porcelain formed at a high temperature above 2000°C, forming a strong metallurgical bond with the steel pipe through the transition layer. It is manufactured using self-propagating high-temperature synthesis and centrifugal methods. That is to put the steel pipe in the tube mold of the centrifuge, and add a mixture of iron red and aluminum powder into the steel pipe. This mixture is called thermite in chemistry. When the centrifuge tube mold rotates to a certain speed, the thermite is ignited by a spark, and the thermite immediately burns by itself. The combustion wave spreads rapidly, and a violent chemical reaction occurs during the spread.
The wear-resistant ceramic elbow uses our company's special temperature-resistant strong glue to paste special corundum wear-resistant ceramic sheets inside the steel pipe elbow, which solves the problem of serious wear of the conveying elbow part in thermal power, metallurgy, steel, cement and other industries. At the same time, a comprehensive solution of steel pipe elbows and wear-resistant ceramic sheets is used to facilitate quick replacement and construction. Depending on the working conditions, the production process is also different, and the direct pasting method, bolt mounting method or one-piece molding method can be used. Among them, the pipe one-piece molding method (RHS) uses selected alumina particles to bake lined pipes using various molding methods, and then uses special fillers to pour the one-piece pipe inside the steel pipe. The pipes formed by this method are different from the ceramic composite pipes formed by the self-burning technology. The ceramic crystals lined with them are exactly the same as the chip ceramics. Its advantage is that the inner wall of the pipeline is smooth and has very good wear resistance, which is suitable for slag conveying and ash removal systems that have high requirements on pipeline materials. The bolt clamping method is a ceramic assembly method that uses adhesive pasting, ceramic sheets to press and insert each other, and bolt clamping to fix the ceramics. Due to the triple fixation method, the ceramics and the equipment have become one, and the ceramics will not fall off even when operating at high temperatures above 1000°C.