Qhov ntom ntawm cov tshuaj tiv thaiv kab mob nyob ntawm qhov kub thiab txias. Puas muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv?

Cov txheej txheem:

Qhov ntom ntawm cov tshuaj tiv thaiv kab mob nyob ntawm qhov kub thiab txias. Puas muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv?
Qhov ntom ntawm cov tshuaj tiv thaiv kab mob nyob ntawm qhov kub thiab txias. Puas muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv?

Video: Qhov ntom ntawm cov tshuaj tiv thaiv kab mob nyob ntawm qhov kub thiab txias. Puas muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv?

Video: Qhov ntom ntawm cov tshuaj tiv thaiv kab mob nyob ntawm qhov kub thiab txias. Puas muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
Anonim

Thaum lub sijhawm ua haujlwm ntawm ntau yam kev txhawb nqa lub neej, lub cav, cov khoom siv thaum lub caij txias, qhov xwm txheej tshwm sim thaum qhov kub thiab txias tsis zoo cuam tshuam rau lub cev ntawm cov kua dej uas nyob hauv lawv. Piv txwv li, cov no yog cov coolants uas pab tiv thaiv overheating ntawm mechanisms lawv tus kheej los yog ntau yam coolants.

antifreeze density rooj
antifreeze density rooj

Yog li ntawd, thiaj li hu ua cov kua dej tiv thaiv kab mob. Antifreeze yog cov khoom ua kua uas khaws tag nrho nws cov khoom txawm tias qhov kub thiab txias sib txawv. Antifreezes yog siv nyob rau hauv kev tsim kho, nyob rau hauv zus tau tej cov tsheb, nyob rau hauv cua sov thiab cua tshuab ntawm cov tsev ntiav los yog industrial vaj tse.

Cov xov xwm kub thiab lawv hom

Yuav luag txhua cov tshuaj tiv thaiv kab mob muaj dej thiab cov tshuaj ntxiv tshwj xeeb. Lub hauv paus ntawm ib qho coolant tuaj yeem yog:

  • Propylene glycol - yog tias koj muab piv nrog lwm hom tshuaj tiv thaiv kab mob, ces cov tshuaj notsis ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv, tsis yog tsuas yog los ntawm kev sib cuag ncaj qha, tab sis txawm los ntawm kev nqus ntawm nws cov vapors. Lub ntsiab kom zoo dua ntawm no hom antifreeze yog nws txoj kev nyab xeeb. Tias yog vim li cas nws thiaj li nquag siv nyob rau hauv ob lub voj voog cua sov, txij li txawm tias cov khoom nkag mus rau hauv cov dej kub, tsis muaj dab tsi phem yuav tshwm sim. Tsis tas li ntawd, propylene glycol yog siv los ua tus neeg sawv cev hauv kev lag luam confectionery, nrog rau kev ua zaub mov ntxiv. Propylene glycol feem ntau yog xim ntsuab. Vim muaj cov xim sib txawv ntawm cov tshuaj tiv thaiv kab mob ntawm kev muag khoom, kev tsis meej pem tshwm sim raws li seb cov tshuaj tiv thaiv kab mob sib txawv tuaj yeem sib xyaw lossis tsis tau. Nws tag nrho yog nyob ntawm lub hom phiaj thiab kev ua haujlwm. Zoo li lwm cov tshuaj tiv thaiv kab mob, qhov khov ntawm propylene glycol yog nyob ib ncig ntawm -35 C.
  • Ethylene glycol yog hom tshuaj tua kab mob nrov heev, feem ntau yog vim nws cov nqi lag luam qis, thiab ntxiv rau, nws muaj ob hom: nrog rau qhov txias txias ntawm -30 ° C thiab -65 ° C. Nws qhov teeb meem tseem ceeb yog qhov txaus ntshai rau tib neeg kev noj qab haus huv. Yog li ntawd, hom tshuaj tiv thaiv kab mob no muaj xim liab kom nyob rau hauv qhov xwm txheej ntawm cov pa xau, nws yuav pom tau thiab qhov tshwm sim ntawm cov xau tuaj yeem raug tshem tawm sai sai.
  • Triethylene glycol yog qhov tsawg tshaj plaws siv tshuaj tiv thaiv kab mob, feem ntau hauv cov tshuab uas kub siab. Triethylene glycol yog suav hais tias yog ib qho tshwj xeeb antifreeze.
hom tshuaj tiv thaiv
hom tshuaj tiv thaiv

Yog li ntawd, xaiv lub hom tshuaj tiv thaiv uas koj xav tau, nws yog qhov zoo dua los daws qhov teeb meem no txawm tias ua ntej koj pib tsim tsev.

Cov khoom tiv thaiv kab mob thiab lawv cov yam ntxwv

Antifreezes txawv:

  • Density.
  • Ntsuab point.
  • Viscosity.
  • Acid-base balance (pH).
  • xim.
  • Heat peev.

Txhua tus neeg hom tshuaj tiv thaiv kab mob muaj nws tus yam ntxwv tshwj xeeb. Antifreezes nyob rau hauv lawv muaj pes tsawg leeg muaj ntau yam additives uas yog tsim nyog los txhim kho lawv zoo.

Cov khoom siv tshuaj tiv thaiv kab mob uas tseem ceeb thaum lawv ua haujlwm

Lawv yog:

  • Kev ua haujlwm ntev. Yog tsis hloov lub coolant, antifreeze systems tuaj yeem ua haujlwm zoo rau lub sijhawm ntev. Qhov no kuj ua tiav qhov kev pab cuam lub neej ntawm tag nrho cov cua sov los yog qhov cua qhov system tag nrho.
  • Antifreezes tiv taus corrosion. Nws yog vim muaj cov additives tshwj xeeb nyob rau hauv cov muaj pes tsawg leeg ntawm antifreezes uas xeb tsis tsim nyob rau hauv lub cua sov systems. Qhov no yuav pab ua kom cov cua sov hauv chav, thiab tib lub sij hawm txo cov nqi hluav taws xob.
  • Resistant rau cavitation. Nyob rau hauv cov dej zoo tib yam, yog tias lub siab nyob rau hauv lub kaw lus txo, npuas yuav inevitably tshwm sim. Nyob rau hauv cov ntaub ntawv ntawm antifreeze, qhov no yog tsis pom. Yog li, lawv kuj txuag tshuab los ntawm hydraulic shocks thiab vibrations.
yog nws muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv
yog nws muaj peev xwm sib tov antifreeze ntawm cov xim sib txawv

Hauv kev tsim cov tshuaj tiv thaiv kab mob ntxiv yog xav tau. Kev tsis siv cov khoom siv no hauv propylene glycol lossis ethylene glycol yuav tsis tsim nyog los ntawm kev pom kev lag luam.saib.

Nuances thaum muas tshuaj tiv thaiv

Txhua yam tshuaj tiv thaiv kab mob uas muag hauv khw muag khoom muaj tus nqi sib txawv, nyob ntawm hom, chaw tsim khoom, thiab cov khoom sib txawv ntawm cov khoom nws tus kheej. Cov neeg tsis paub qab hau feem ntau yuav cov tshuaj tiv thaiv tsheb rau lawv cov cua sov (cov roj hloov pauv, tshuaj tiv thaiv kab mob, thiab lwm yam). Qhov no yog categorically tsis tsim nyog, vim hais tias lawv muaj cov tshuaj phem rau tib neeg thiab tsiaj txhu. Tsis tas li ntawd, lawv yog cov nplaim taws heev.

Cov kev daws teeb meem zoo tshaj plaws hauv kev xaiv cov khoom siv hluav taws xob rau cov cua sov yog ethylene glycol. Ntawd yog, hom tshuaj tiv thaiv kab mob uas ua raws li nws.

density ntawm antifreeze nyob ntawm qhov kub thiab txias
density ntawm antifreeze nyob ntawm qhov kub thiab txias

Tips & Tricks

Ib qho ntawm cov lus nug uas cov neeg yuav khoom nug hauv khw yog "Kuv puas tuaj yeem muab cov xim sib txawv ntawm cov tshuaj tiv thaiv kab mob?" Qee zaum qhov no tau txais, tab sis tsuas yog tom qab kuaj xyuas cov khoom hnyav rau kev sib raug zoo. Feem ntau, kev sib xyaw xim sib txawv ntawm cov tshuaj tiv thaiv kab mob ua rau txo qis hauv kev ua haujlwm ntawm cov khoom ua kom txias thiab tsim cov xeb tso rau ntawm cov yeeb nkab phab ntsa.

Nws yog qhov zoo tshaj rau dilute antifreeze nrog dej distilled. Nws tsis muaj ntsev ntawm cov tshuaj xws li calcium thiab magnesium, yog li nws feem ntau softer dua li qhov yuav tsum tau muaj. Cov dej zoo tib yam, thaum siv tshuaj tua kab mob, feem ntau yuav ua rau nag lossis daus. Qhov tso cai hardness ntawm cov dej siv los dilute lub antifreeze yog 5 mg-equiv.

Thaum ua haujlwm nrog cov tshuab cua sov, nws yog ib qho tsim nyog los saib xyuas qhov ntsuas qhov ntom ntomantifreeze. Lub rooj, raws li txoj cai, tau muab tso rau sab nraum qab ntawm lub tank; nws tuaj yeem siv los txiav txim siab qhov kev ua tau zoo ntawm lub tshuab ua kom txias.

Antifreeze density meter
Antifreeze density meter

Ethylene glycol-based antifreeze yog thermally conductive tsawg dua dej (los ntawm 15-20%).

Tsis muaj kev ntshai ntawm kev txo qis kev ua haujlwm ntawm cov cua sov, tshuaj tiv thaiv kab mob tuaj yeem siv tau 5 xyoos. Tom qab ntawd koj yuav tsum tso cov qub qub thiab sau rau hauv ib qho huv, tshiab coolant.

Dab tsi yog qhov ntom ntawm cov tshuaj tiv thaiv kab mob ntsuas hauv?

Qhov ntom yog qhia hauv grams ib cubic cm. Tshawb xyuas qhov chaw khov thiab qhov nyiaj ntawm ethylene glycol yuav pab kom qhov ntom ntom ntawm cov tshuaj tiv thaiv kab mob. Lub rooj ntom ntom muaj ntau qhov ntsuas thiab yooj yim siv.

txhawm rau txheeb xyuas qhov ntom ntawm cov tshuaj tiv thaiv kab mob, koj tuaj yeem siv hydrometer. Qhov no yog ib qho khoom siv rau kev ntsuas qhov ntom ntawm cov tshuaj tiv thaiv kab mob. Nws muaj ob qhov ntsuas - rau ntsuas qhov ntom ntom thiab khov taw tes.

Tshuaj xyuas qhov ntom ntawm cov tshuaj tiv thaiv kab mob nrog lub refractometer

Koj tuaj yeem kuaj xyuas qhov ntom ntawm cov tshuaj tiv thaiv kab mob thiab lub refractometer. Kev tshuaj xyuas yog ceev, tsuas yog ib qho dej txias txaus xwb.

Kev ntsuas ntsuas yog raws li hauv qab no:

  • Pip antifreeze mus rau qhov ntsuas lub prism nrog lub pipette.
  • Ntxig nrog qhov muag.
  • Nyeem nyeem los ntawm qhov ntsuas raws kab ntsuas.

Koj kuj siv tau txoj kev pej xeem - muab me ntsis tshuaj rau hauv lub raj mis yas, cork thiab muab tso rau hauv lub freezer ntawm lub tub yees. Do tom qab ib teev. Yog hais tias cov tshuaj tsis crystallize, ces qhov no antifreeze yuav siv tau thaum twg-24 ° C (qhov nruab nrab lub freezer kub).

antifreeze ntom
antifreeze ntom

Qhov ntom ntawm cov tshuaj tiv thaiv kab mob sib txawv txawv nyob ntawm qhov kub thiab txias, thiab thaum siv qhov kub ntawm -65 ° C, nws tseem pib decompose. Raws li qhov tshwm sim, kev ua haujlwm ntawm cov cua sov yuav raug cuam tshuam, thiab lub coolant nws tus kheej yuav ua tsis tiav.

Pom zoo: