engleski

Analysis of possible tribological losses during stemming of tobacco

Primary stage of Burley type tobacco in thresher machines includes separation of fine parts of tobacco leaves from the ribs, the so called “stemming”. Thereby cutting edges of knives are exposed to wear by abrasive particles. Analysis has been performed of the influence of two kinds of protective layers on thresher knives on quality of stemming, depending upon tobacco leaves blend. It has been established that operation with worn knives is most negatively reflected on the most quality tobacco fractions – those having the greatest market value. It has been proved that application of sprayed layer instead of installation of plates made of hard metal, followed by partial exchange of worn knives can tribological losses even up to 6 %.

tribological losses ; efficiency ; stemming of tobacco ; knives

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