Nres kua
Kev faib tawm tam sim no ntawm cov dej nres feem ntau ua raws li US automotive kev ruaj ntseg kev cai lij choj, ua ntej nrog "DOT," suav nrog DOT3, DOT4, DOT5, thiab DOT5.1. Tuam Tshoj kuj tseem muaj cov qauv kev sib raug zoo hauv lub tebchaws nrog cov lus ua ntej "HZY," qhov twg HZY3 sib raug rau DOT3, HZY4 rau DOT4, HZY5 txog DOT5, thiab HZY6 rau DOT5.1.
DOT3/DOT4/DOT5.1 yog tag nrho cov cawv-raws li cov kua dej nres raws li glycol ethers lossis borate esters, thaum DOT5 yog silicone-raws li cov kua dej nres. DOT3 / DOT4 / DOT5.1 tuaj yeem sib xyaw ua ke, tab sis DOT5 tsis tuaj yeem sib xyaw nrog lwm yam peb hom. Yog tias siv DOT5 cov kua dej nres, koj yuav tsum xub paub meej tias tag nrho cov khoom ntawm tag nrho cov braking system yog sib xws nrog DOT5, thiab ntxuav tag nrho cov braking system cov kua kab ua ntej hloov mus rau DOT5.
Cawv-raws li cov kua nres yog sib xws nrog dej thiab acetone, tab sis lawv qhov kub thiab txias yuav txo qis tom qab kev sib raug zoo, uas cuam tshuam rau lawv cov kev ua tau zoo nyob rau hauv qhov kub thiab txias. Vim nws cov khoom siv tshuaj lom neeg, cov dej nres yuav txuas ntxiv nqus dej los ntawm ib puag ncig thaum siv txhua hnub, yog li cov dej hauv cov dej nres tau raug kuaj tsis tu ncua thaum lub sijhawm tu tsheb. Thaum tshaj qhov pib, cov kua nres yuav tsum tau hloov. Tsis tas li ntawd, ethylene glycol muaj cov nyhuv corrosive ntawm cov xim, yog li yuav tsum tau ceev faj kom tsis txhob cuam tshuam cov kua dej los ntawm kev sib cuag cov xim pleev xim thaum hloov cov kua dej. Tam sim no, DOT4 tau hloov pauv ntau DOT3 raws li tus qauv nres dej rau cov maus taus dav dav, thaum DOT5.1 yog siv los ua cov dej nres rau siab - maus taus kev ua tau zoo vim nws cov yam ntxwv ua tau zoo.
Silicone-raws li cov dej nres tsis nqus dej noo los ntawm ib puag ncig lossis ua rau cov xim tsis zoo, tab sis nws nthuav tawm kev ua haujlwm sai dua thiab lub sijhawm hloov pauv luv dua piv rau cov cawv-raws li cov neeg sib tw. Vim nws lub cev muaj zog, nws cuam tshuam rau kev ua haujlwm ntawm ABS twj tso kua mis ntawm qhov kub thiab txias. Ua raws li kev siv dav dav ntawm ABS systems, DOT5 tau maj mam dhau mus. Tam sim no nws tsuas yog siv rau hauv kev sib tw tshwj xeeb.
Cov tsheb feem ntau siv DOT3/DOT4/DOT5.1 cawv-raws li cov kua nres. Nws raug nquahu kom siv DOT5.1 dej nres thaum twg los tau raws li qhov tsim nyog. Kev ua raws li cov txheej txheem hloov cov kua dej yuav tsum tau ua kom ntseeg tau, suav nrog kev tshem tawm cov cua kom tiav, kom lub zog nruj ntawm cov fasteners, thiab tiv thaiv kev txaws / poob.
