Yintoni ukuzinza kwe-chear ye-oyile?

Yintoni ukuzinza kwe-chear ye-oyile?

Ukulinganisa isalathisi somgangatho weoli kunye neeparitha ezininzi, namhlanje siza kuthetha / ukuzinza kwe-chear, imele ioli yeyiphi imiba yendalo? Imeko yosuku icacise ngocoselelo kuwe.

Yintoni isikwa? Phambi malunga [nozinzo lokucheba], siya kuba ngabokuqala ukwazisa ingqikelelo/ukucheba kwaye ukucheba ligama loyilo lwezakhiwo. Ngaphakathi kokufikeleleka ngokulula kokuthe ngqo kubhekiselele: kwisibini esinobukhulu obufanayo, sikhomba kumandla asecaleni achaseneyo (okt., i-perpendicular kwindima yomkhosi), imathiriyeli yecandelo lomnqamlezo ecaleni kolwalathiso lwamandla angaphandle esiphoso esizalanayo. kunye ne-deformation phenomenon.

Xa uthi krwaqu nje ezinye abstract, kodwa nceda ugxininise: deformation shear force reaction of oil kwioyile, ibhekisela kwiimolekyuli zeoyile phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu, ngenxa yoxinzelelo kunye noxinzelelo lwe-chear yeemolekyuli zeoyile zophukile kunye ne-deformation. echaphazela i-viscosity yeoli ngokwayo.

Shear uzinzo, phambi kokuqonda iikhonsepthi ezimbini, makhe ngokusemthethweni ukucheba uzinzo inkcazo: ukuzinza shear ngummeli oyile yokuthambisa phantsi ukucheba mechanical, ubume RCC unako ukugcina viscosity ezinzile.

Uzinzo oluhle lokucheba, ioyile yokuthambisa inokugcina uzinzile kwi-viscosity yeshear yomatshini, umjikelo wokusebenzisa, ifuthe le-oyile yokuthambisa i-injini izinzile ngakumbi. Uzinzo lwe-Shear, ukuthambisa i-viscosity yeoli yehla ngenxa yokucheba. Intuitively, ioyile iyancipha.

Isiphelo: ukuzinza kwe-shear kulungile okanye kubi, kuya kuchaphazela ukusebenza kweoli phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu, kunye nobomi obusebenzayo benkonzo yeoli ye-injini.

Indlela yokuphucula ukuzinza kwe-shear ukwenzela ukuphucula ukuzinza kwe-shear yeoli, izazinzulu ziya kongezwa kwi-oyile ye-viscosity index improver, olu luhlobo lwe-polymer enobushushu.

Kumaqondo obushushu aphezulu, ukolula kwetsheyina lemolekyuli, ukonyuka kwe-oyile yesiseko, isiphumo sokuthintela ulwelo lweoyile, oko kukuthi, ukonyuka kwe-viscosity, i-lubricant viscosity yehle ukuya kuthi ga kwinqanaba elithile.

Ngokubanzi, ngenxa yefomula ye-oyile ephindaphindwayo rhoqo, simahla ukwaba i-oyile edityanisiweyo ineenzuzo ezingaphezulu kuzinzo lokucheba.