Ubudlelwano Phakathi Kwe-Mesh nama-Microns

Abasebenzi basembonini yempushana bavame ukusebenzisa igama elithi “usayizi wemeshi” ukuchaza usayizi wezinhlayiyana. Ngakho-ke, uyini usayizi wemeshi futhi uhlobene kanjani nama-microns?

Usayizi wemeshi ubhekisela enanini lezimbobo kusisefo, okuyinani lezimbobo kuyintshi yesikwele. Ukuphakama kosayizi wemeshi, kuncane usayizi wembobo. Ngokuvamile, usayizi we-mesh ophindwe ngosayizi wembobo (ngama-microns) ≈ 15000. Isibonelo, isisefo se-400-mesh sinobukhulu bembobo obungama-microns angu-38, kanti isisefo se-500-mesh sinobukhulu bembobo obungaba ngu-30 microns. Ngenxa yodaba lwendawo evulekile, okubangelwa ukujiya kocingo olusetshenziswa uma kweluka inetha, amazwe ahlukene anezindinganiso ezihlukene. Njengamanje kunamazinga amathathu: i-American, British, kanye neJapanese, amazinga aseBrithani nawaseMelika afanayo kanye nezinga laseJapane lihlukile. Izinga laseMelika livame ukusetshenziswa, futhi ifomula enikezwe ngenhla ingasetshenziswa ukubala.

Kungabonakala ukuthi ubukhulu be-mesh bunquma ubukhulu bembobo yesihlungo, futhi ubukhulu bembobo yesihlungo bunquma ubukhulu bezinhlayiyana ze-Dmax ze-powder ezidlula ngesihlungo. Ngakho-ke, akufanelekile ukusebenzisa usayizi wemeshi ukuze unqume usayizi wezinhlayiyana zempushana. Indlela efanele iwukusebenzisa usayizi wezinhlayiyana (D10, ububanzi obumaphakathi D50, D90) ukumela usayizi wezinhlayiyana nokusebenzisa amagama ajwayelekile ukuze kugwenywe noma yikuphi ukungezwani. Kubalulekile futhi ukulinganisa njalo imishini namathuluzi usebenzisa izimpushana ezijwayelekile.

Amazinga kazwelonke ahlobene nempushana:

• I-GBT 29526-2013 Terminology yePowder Technology
• Izimpawu Zezithombe ze-GBT 29527-2013 Zezisetshenziswa Zokucubungula Impushana