The Technical Investigation And Application On Enhancing The Service Life Of Sintering Grate Bar

Sinter is very important crude materials for smelting of blast furnace. Its quality is the key to the output and quality of smelting and energy consumption. The sinter producing is a dynamic process with complicated mechanism and various parameters, which is one of the key craft in the steel metallurgy production link. The sintering machine is the equipment of producing sinter, which key shatter part is the bars.In the sinter craft of the steel metallurgy, the sintering machine's function is good or bad, how about the ability adapted the work condition continuously changing, all of that is the key to control the sinter quality. The sinter trolley directly contacts with the reaction process sintering the raw material, which work condition is much scurviness. But the bars is key shatter part of the sinter trolley , which service life and the shape influence the sintering very greatly. Therefore, there is a great significance for increasing the sinter quality and reducing the energy consumption by improving the service life of the bars. So it's a technique problem to investigating continuance for a long time in the metallurgy manufacture how obtain the new material form to improve or raise the quality of applying bars.Passing to the full analysis of sintering machine bar's working condition,failure forms and the real object quality , according to studying and applying of the present condition at home and abroad, contrasting the material and the capability of the using bars, then, we confirm the best compages of the bar's material by the production testing, make the sample that applied to testing the guideline, make a few that applied to producing verification, record the monitoring data of production, and adjust the composition timely by the probation, finally, we get the new material bars which can be produced in batch and applied. In the studying,experimenting and manufacturing of the new material bars , we develop a new foundry craft just for guaranteeing production quality wealthy and reducing the foundry blemish possibly , and which is introduced simply in this paper。The manufacture and application of the bars which is adopted compound enhanced ferrite and refractory steel, not only distinctly improvs the service life of the bars, decreas the maintain expenses, and confirms the normal working of the sintering machine, reduces the number of shutdown time to maintaining, raise the valid utilization of the sintering machine. In addition, that effectively reduces the maintain online, lowers the worker's labor, improves the work environment, and bring us great social and economic benefit.