Ubukhwebezeli: Inkomba Ebalulekile Yokusebenza Kawoyela Wokugcoba

Ubukhazikhazi buyisikhombisi esikhulu sokusebenza kwamafutha okugcoba. Izinto ezahlukene zokupholisa zinezidingo ezahlukene zobukhazikhazi. Ngokwesibonelo, i-R12 ihlangana namafutha okugcoba, okuzonciphisa ubukhazikhazi bukawoyela. Ngakho-ke, kufanele kukhethwe amafutha okugcoba anobukhazikhazi obuphezulu.

Ubukhazikhazi obungaphezulu kakhulu noma obungaphansi kakhulu abufanele izinjini zokupholisa. Ubukhazikhazi obuphezulu kakhulu buzokwandisa amandla okungqubuzana nokukhiqizwa kokushisa, bukhulise i-torque yokuqala, futhi buhlise ukusebenza komshini. Uma ubukhazikhazi bungaphansi kakhulu, ifilimu kawoyela edingekayo ayikwazi ukwakheka, okuzokwenza ukuguga kwamalageri nezinye izingxenye kusheshe. Ngakho-ke, ubukhazikhazi kufanele bube ngobuningi.

Ubunzima (viscosity) bukawoyela wokugcoba buguquguquka kakhulu ngokushisa. Ngokwesibonelo, lapho izinga lokushisa likhuphuka lisuka ku-50°C liye ku-100°C, ubunzima bukawoyela wamaminerali buye phansi kube kungu-1/3 kuya ku-1/6 yenani lawo langempela. Ngalesi sizathu, kufanele kusetshenziswe uwoyela wokugcoba onokuguquguquka okuncane kobunzima ngokushisa.