The current experience of applying the composites in practicing the industrial equipment maintenance
Journal Title: Metallurgical and Mining Industry - Year 2018, Vol 10, Issue 2
Abstract
Challenging problem. Over the last years the composite materials on adhesive bases with the added nanopowder and the modifying agents required become more common in practicing the industrial equipment maintenance [1- 3]. However during maintenance of the metallurgical production machines such applying is typically occasional and is not a constituent part of current and general maintenances procedure. In Pryazovia State Technical Engineering University they gained a big experience of nonstandard maintenance situations solution, which arise during operation of the metallurgical equipment, which the enterprises’ maintenance services can use successfully and this is the reason why the material provided below, is presented as well-timed and currently central [4-6]. Purpose statement First and foremost, it should be said that the composite materials significantly are inferior in strength to the steel articles, the weld surfaces or the welded seams. Judging from these points of view there is no worthy alternative to the welding engineering. But in the following description it will be shown that there are cases when applying of traditional maintenance technologies either cause big material expenditures or can be used provided that they stop the device for a long time to replace the component which is out of service, with a new one [7-8]. At the same time when we use the composite materials we not only have an opportunity to conduct the maintenance in the shortest time possible, but to give new lease of life to the remanufactured components as well. Nevertheless many examples of the composite material utilization in metallurgical maintenances have no connection to operation in the conditions of the heightened temperatures, so the following examples of maintenance are devoted to analysis of their maintained equipment successful utilization. Information The first example is a case of putting into operation the continuous casting machine, in which in the process of operation there were water leakages through compressions, set at the crystallizer jigging frame and seal hermetically the quenching water supply to crystallizer. In the process of operation the slot in the frame, where the rubber seal is being put, corrodes and cannot fully hold the compression in the set position. This is where the water leakage comes from and so there is a need to restore the leak-tightness of the water supply system to the crystallizer. The conventional way out is to disassemble the mill shoe with the worn-out riffles, the welding deposition and the stock removal with fitting riffle for the compression installation. Upon that the stopping of the machine, taking into account disassembling, restoration and assembling, is a pretty long process, provided that there is a prepared technology and equipment for restoration. By virtue of the composite materials this maintenance problem can be solved in 2 days. The key point of restoration, as we can see from the figure 1, is in setting tape tool from the stainless steel in the supply hatchway and its fixturing to the mill shoe by welding tacked spots. Then the cavity, formed between the welded sheet and residues of the conduit for compression they fill with the composite material, process the rubber seal with the releasing agent and put it into the former riffle for the tall beacon, which restricts its depression on a level lower than the required one.
Authors and Affiliations
A. A Ishchenko, D. A. Rassokhin, D. L Kakareka
Keywords
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