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Controlling the Quality and Life of Briquetting Machine MMA Surfaced Working Elements in the Process of Steel Briquette Manufacturing

Aleksander Lisiecki, Andrzej Majowski, Thomas Gorzelik, Jarosław Jarek, Piotr Gorzela, Agnieszka Kurc-Lisiecka

The article presents the results of a study dedicated to the selection of covered electrodes applied for the surfacing of briquetting machine working elements used in the production of briquettes made of fine-grained steel scrap. The analysis of operating conditions and wear mechanisms affecting surfaces of working elements enabled the preliminary selection of four types of covered electrodes used for the surfacing of wear-resistant surfaces. The tests involved structural and chemical composition analyses, microhardness measurements and the analysis of operational properties, particularly of metal-metal abrasive wear in relation to electrode weld deposits. The selection of electrodes, whose weld deposit provides the highest resistance to metal-metal abrasive wear were followed by operational tests of briquetting machine surfaced elements in real production conditions. The tests have revealed that the surfacing of the surfaces of briquetting machine work elements by means of EC 4119 covered electrodes extends the service life of these elements four times if compared with the life of original working elements made of tool steel intended for cold operation.

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