Ndeipi density yemafuta egiya?
Chii chinotarisa kuwanda kwemafuta egiya?
Kuwanda kwechero mvura yepakati haigone kuverengerwa seyesvomhu yeavhareji yezvikamu zvinosanganisirwa mukuumbwa kwayo. Semuenzaniso, kana ukasanganisa 1 litre yemvura ine density ye1 g/cm3 uye 1 litre yedoro ine density ye0,78 g/cm3, pakubuda hatizowana 2 malita emvura ane density ye 0,89 g/cm.3. Pachave nemvura shoma, sezvo mamorekuru emvura nedoro ane chimiro chakasiyana uye achitora vhoriyamu yakasiyana munzvimbo. Kugovera kwavo yunifomu kuchaderedza vhoriyamu yekupedzisira.
Anenge musimboti mumwechete unoshanda kana uchiongorora kuwanda kwemafuta egiya. Iyo chaiyo giravhiti yeimwe neimwe lubricant chikamu inogadzirisa yayo pachayo kune yekupedzisira density kukosha.
Kuwanda kwemafuta egiya kunoumbwa nemapoka maviri ezvikamu.
- base mafuta. Sechigadziko, chigadziko cheminerari ikozvino chinowanzoshandiswa, zvishoma kazhinji - semi-synthetic uye synthetic. Iyo chaiyo gravity yemamineral base inotangira pa0,82 kusvika 0,89 g/cm3. Synthetics inenge 2-3% yakareruka. Izvi zvinokonzerwa nekuti panguva ye distillation yemamineral base, maparafini anorema uye macheni marefu ema hydrocarbons anonyanya kubviswa (hydrocracking) kana kushandurwa (hard hydrocracking). Polyalphaolefins uye anonzi maoiri egasi zvakare akati rerukei.
- Additives. Munyaya yezvinowedzera, zvose zvinoenderana nezvikamu zvakashandiswa zvinoshandiswa. Semuenzaniso, thickening agents anorema kudarika chigadziko, izvo zvinowedzera kuwanda kwese. Zvimwe zvinowedzera zvinogona kuwedzera density uye kuidzikisa. Naizvozvo, hazvibviri kutonga zvisina kujeka manufacturability epakeji yekuwedzera chete nekuwanda.
Iyo inorema iyo mineral base, iyo shoma yakakwana iyo yakagadzirira-kushandisa-oiri inowanzo fungwa.
Chii chinokanganisa kuwanda kwemafuta egiya?
Mafuta egiya, sechigadzirwa chakapedzwa, ane density ye800 kusvika 950 kg/m3. High density nenzira isina kunanga inoratidza zvinotevera hunhu:
- kuwedzera viscosity;
- yakakwirira ye antiwear uye yakanyanyisa kudzvinyirira additives;
- zvishoma zvakakwana base.
Zvinwiwa zvekutumira otomatiki hazviwanzo kusvika kune density ye900 kg/m3. Paavhareji, density yeATF fluid iri pamwero we860 kg / m3. Mafuta ekufambisa kwemagetsi, kunyanya marori, anosvika 950 kg/m3. Kazhinji maoiri ehurefu hwakadaro ane viscous uye anokodzera chete kushanda kwezhizha.
Kuwanda kwemafuta egiya kunowedzera kuwedzera panguva yekushanda. Izvi zvinokonzerwa nekuzara kwemafuta ane okisijeni, zvigadzirwa zvekupfeka uye kubuda kwezvikamu zvakareruka. Pakupera kwehupenyu hwavo hwesevhisi, mamwe mafuta egiya anosungirirwa kusvika 950-980 kg/m.3.
Mukuita, parameter yakadai semafuta density haina kukosha kune akajairika mota. Pasina chidzidzo chemurabhoritari, zvakaoma kutaura chero chinhu chakanangana nemhando yayo kana zvimiro. Zvinokwanisika chete nekufungidzira kwakakosha kuongorora kuumbwa kwezvinowedzera, chero rudzi rwechigadziko rwunozivikanwa.
