| Wear-resisting lining board is an important part of port material transportation.The wear-resisting property of the wear-resisting lining often determines the service life and maintenance cycle of the material transportation device.At present,the wear-resistant lining of online use mainly consists of rolling cast alloy steel lining and surfacing high chromium cast iron lining.In addition,there are some companies that use microcrystalline lining boards,composite lining boards and polyurethane lining boards and other types of products.The quality of the lining board is uneven,the price is different,and the life span is very different for different working conditions.Wear-resisting lining as the market diversification development present situation,adopts the traditional method,only by wearing plate thickness and the price of two indicators for purchasing mode limitations highlighted in recent years,thus study the friction and wear behavior of wear resistant lining board,is beneficial to guide the selection of wear resistant lining board under actual working condition,improve the production efficiency,reduce production costs.Wear resistant lining board switching device in this paper,the port for the collection,and according to its type(welding plate,casting rolling plate,fused porcelain plate and microcrystalline lining board,etc.)the accelerated life test comparison.By composition analysis,microstructure observation,thickness and hardness measurement,acceleration of abrasive wear and erosion wear test,the impact resistance test,studied,and tribology capability of liner according to compare the data from laboratory tests and field test data,the analysis of wear resistant lining board in the life prediction.As a result,the standard deviation of the liner thickness is±0.5 mm,and the thickness of the surfacing layer is not less than 50%.The compositional content of the cast wear-resistant liners C,Si,Cr,and Mn is 0.4%-0.8%,1.5%-2.0%,1.0%-4.5%,1.5%-2.5%.The compositional content of C,Si,Cr,and Mn in the overlaying-type lining plate is4.5%-5.5%and 0.5%-respectively.1.5%,23.0%-30.0%,1.5%-2.5%;The brittleness of the ceramic liner and the microcrystalline liner;The abrasive wear performance of the ceramic and ceramic liner Good,wear-resisting linings have better abrasive wear properties,poor abrasive wear properties for cast and rolling,erosion wear,and erosion wear areas for cast,rolled,and surfacing linings are all 80 In the range of mm~2/h-130 mm~2/h,the difference is not significant.The microcrystalline linings have poor abrasive wear and erosion wear properties in the dry friction environment,but under the conditions of low frictional heating,The abrasive wear performance is excellent;the laboratory test accelerates the field test by 180±12,and the service life of the liner is predicted based on the accelerating rate of the liner,and the liner grading body is established at the same time. |
