Mashin ɗin ball suna da matuƙar muhimmanci a cikin masana'antar hakar ma'adanai da sarrafa ma'adanai, ana amfani da su don nika abubuwa zuwa ƙananan gari. Gudun juya, ko RPM (juyawa a kowanne minti), yana da mahimmanci wanda ke shafar inganci da tasirin aikin nika. Wannan makala tana bincika yadda za a tantance RPM mafi kyau don mashin ɗin ball mai diamita 45 inci.
Kafin a ƙididdige RPM mafi kyau, yana da mahimmanci a fahimci tsarin aiki na milin bulo:
– Kwando: Jikin silinda na mil.
– Kwallaye: Kayan aikin nika da ke nika da daka abu.
– Mota: tana ba da ƙarfin juyawar mashin.
– Ana shigar da kayan aikin cikin mill.
– Kwallaye suna tasiri da kuma nika kayan.
– Saurin juyawa yana shafar ingancin niƙa.
Dama abubuwa da dama suna bukatar a yi la'akari da su lokacin tantance RPM na mill na kwallon:
Ana iya lissafin saurin muhimmanci na mill din ball ta amfani da wannan tsarin:
\[ \text{Saurin Muhimmi (C)} = \frac{76.6}{\sqrt{D}} \]
Inda:
Don mill mai diamita na inci 45:
\[ C = \frac{76.6}{\sqrt{3.75}} \approx 39.5 \, \text{RPM} \]
Yawanci, a ina abin koyo na ƙwanƙwaso ya kasance a 65% zuwa 75% na saurin gaggawa don tabbatar da ingantaccen niƙa da guje wa lalacewa mai yawa. Saboda haka, don mil na inci 45:
– Mafi ƙanƙanta: \( 0.65 \times 39.5 \approx 25.7 \, \text{RPM} \)
– Mafi girma: \( 0.75 \times 39.5 \approx 29.6 \, \text{RPM} \)
Lokacin da aka kafa RPM don milin ƙwallo, yi la'akari da waɗannan abubuwan a aikace:
Tsananta RPM mafi kyau don mashin gasa yana buƙatar fahimtar gudun mahimmanci da daidaita don la'akari da abin da ya dace. Don mashin mai diamita 45 inci, ana ba da shawarar aiki tsakanin 25.7 RPM da 29.6 RPM don daidaita inganci da gajiya. Koyaushe a yi la'akari da takamaiman abu da sakamakon da ake so lokacin saita RPM don tabbatar da ingantaccen aiki.
