slide_image_contaminants

Valashi

Valashi

TANTHAUZO

Malo opyapyala, olimba, onyezimira, osasungunuka ndi mafuta, omwe amapangidwa makamaka ndi zotsalira za organic, ndipo amadziŵika bwino kwambiri chifukwa cha kuchuluka kwa mtundu.Simachotsedwa mosavuta popukuta ndi zopukuta zoyera, zowuma, zofewa, zopanda lint ndipo zimagonjetsedwa ndi zosungunulira zodzaza.Mtundu wake ukhoza kukhala wosiyana, koma nthawi zambiri umawoneka mu imvi, bulauni kapena amber hues.Chitsime: ASTM D7843-18

Varnish - 1

KODI VARNISH AMAPHUNZITSIDWA BWANJI

Nthawi zambiri, mafuta amawonongeka chifukwa cha kupsinjika kwamankhwala, kutentha, makina omwe amafulumizitsa momwe ma oxidation amafuta amagwirira ntchito ndipo mapangidwe a varnish amayamba ndi okosijeni.

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Gawo 1: Oxidation

- Chemical:Zinthu zambiri zamafuta zimachitika m'zaka zamafuta.Kuchuluka kwa okosijeni wamafuta kumabweretsa zinthu zambiri zowola, kuphatikiza ma insoluble particulates ndi ma acid.Kutentha ndi kupezeka kwazinthu zachitsulo (Iron, Copper) kumathandizira ntchitoyi.Kuphatikiza apo, mafuta ochulukirapo amatha kutengeka kwambiri ndi Oxidation.

- Kutentha:Pamene thovu la mpweya lilowetsedwa mu mafuta, kulephera kwakukulu kwa mafuta kungabwere chifukwa cha zomwe zimadziwika kuti PID (Pressure-induced Dieseling) Kapena PTG (Pressure-induced Thermal Degradation).Kutentha komwe kumakhalako kumapitilira 538 ℃ pomwe thovu la mpweya limagwa ndi kupsinjika kwakukulu, zomwe zimabweretsanso kuwonongeka kwamafuta.

-Makanika:"Kumeta" kumachitika pamene mamolekyu amafuta amang'ambika pamene akuyenda pakati pa malo osuntha.

Gawo 2: Polymerization

Polymerization imachitika pamene zinthu zotulutsa okosijeni & zochita zowonjezera zimaphatikizana ndikupanga mamolekyulu autali okhala ndi mamolekyu apamwamba kwambiri.Mamolekyu awa ndi polarized.Mlingo wa maselo polymerization zimadalira kutentha ndi ndende ya ndi mankhwala makutidwe ndi okosijeni.

Gawo 3: Kusungunuka

Imawonetsa kuthekera kosungunula mamolekyu mkati mwa yankho lomwe limakhudzidwa mwachindunji ndi kutentha.Pamene zinthu zopangidwa ndi okosijeni zimapangidwira mosalekeza, madzimadzi amakhala pafupi ndi malo odzaza.

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Njira yomwe imayambitsa kuyika kwa tinthu tating'onoting'ono imasinthidwa.Nthawi zambiri, varnish ikapangidwa, imatha kulowetsedwanso mumadzimadzi ndikusweka ngati kusungunuka kwa mafuta kumawonjezeka.

Gawo 4: Mvula

Madzimadzimadzi sangathe kusungunula mamolekyu atsopano opangidwa ndi ma polima akafika pamalo ozizira kapena madzimadzi amadutsa m'madera ozizira (Kusungunuka kumachepa kutentha kutsika).Popeza kuti zinthu zina za okosijeni sizingagwire ntchito, zimatuluka ndikupanga tinthu tofewa (sludge/varnish).

Gawo 5: Agglomeration

The insoluble zofewa particles n'zosavuta agglomerate mzake ndi kupanga zikuluzikulu polarized particles ndi apamwamba maselo kulemera.

Gawo 6: Varnish yopangidwa

Zitsulo zambiri polar kuposa polarized particles kotero kuti mosavuta kudziunjikira pamwamba zitsulo (ozizira madera, bwino chilolezo, otsika otaya) kumene wosanjikiza yomata(Varnish) aumbike ndi kukopa particles zambiri kutsatira izo.Umu ndi momwe varnish idapangidwira

Mafuta a Varnish

Kumanga ndi kulanda mavavu

Kutenthedwa mayendedwe

Kuchepetsa mphamvu zosinthira kutentha

Kuwonjezeka kwa kuvala kwa zinthu zofunika kwambiri ndi ma valve

Kufupikitsa moyo wa Makina, mafuta, zosefera ndi zosindikizira

NJIRA YOPEZERA VARNISH

Chifukwa cha kukwera mtengo kwa kupezeka kwa varnish, muyenera kuyang'anira momwe varnish ingathere mu makina anu opaka mafuta.The ambiri anatengera njira ndiMembrane Patch Colorimetry(MPC ASTM7843).Njira yoyeserayi imatulutsa zoyipitsidwa zosasungunuka kuchokera ku zitsanzo zamafuta a turbine omwe akugwira ntchito pachigamba (chokhala ndi nembanemba ya 0.45µm) ndipo mtundu wa chigamba cha nembanemba umawunikidwa ndi spectrophotometer.Zotsatira zimanenedwa ngati mtengo wa ΔE.

MPC-mayeso-1200x609

ZOTHANDIZA ZA KUCHOTSA VARNISH

Chitsanzo Varnish yosungunuka Insoluble Varnish Madzi
WVDJ
WVD-II  
WJD    
WJL

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