Nekushambadzwa nekuitwa kwemitemo yezvemamiriro ekunze iri kuramba ichiomesera, zvinodiwa pakuvaka pendi yemotokari zviri kuramba zvichikwira.Painting haifanire kungovimbisa kuita kwakanaka kwe-anti-corrosion, kuita kwepamusoro kwekushongedza, uye kuita kwepamusoro kwekuvaka, asi zvakare kutora zvinhu uye maitiro nekuita kwakanaka uye kuderedza volatile organic compounds (VOC) emissions.Mvura-yakavakirwa pendi zvishoma nezvishoma inova iyo huru yecoatingsnekuda kwezvakatipoteredza zvine hushamwari zvikamu.
Mvura-yakavakirwa pendi haingogone kuvandudza kushanda kwekugadzirisa, asiwo ine simba rekuvhara simba, iyo inogona kuderedza nhamba yezvikamu zvekupfapfaidza uye huwandu hwepende inoshandiswa, uye inogona kuderedza nguva yekupfira uye kupfira mari.
Kusiyana pakati pemvura-based and oil-based paints
1. Diluting agents akasiyana
Iyo diluting agent yependi-based pendi imvura, iyo inofanirwa kuwedzerwa kune zvakasiyana-siyana kubva pa0 kusvika ku100% zvichienderana nezvinodiwa, uye diluting agent yependi-based pendi ndeye organic solvent.
2. Kuita kwakasiyana kwezvakatipoteredza
Mvura, iyo diluting agent yependi ine mvura, haina benzene, toluene, xylene, formaldehyde, yemahara TDI inochetura heavy metals nezvimwe zvinokuvadza zvinokonzeresa carcinogenic, uye naizvozvo haina njodzi kuhutano hwevanhu.
Mvura yebhanana, xylene uye mamwe makemikari anowanzo shandiswa seye diluting agent yemafuta-based peints, iyo ine yakawanda yebenzene uye mamwe macarcinogens anokuvadza.
3. Mabasa akasiyana
Mvura-based pendihaisi kusvibisa nharaunda chete, asiwo ine firimu rependi rakapfuma, rinonyatsojeka mushure mekuita pamusoro pechinhu uye rine kushanduka kwakanakisisa uye kuramba kumvura, abrasion, kuchembera uye yellowing.
Unyanzvi hunoita hwemvura-based pendi spraying
Kupisa kwemvura mupendi yakavakirwa pamvura kunonyanya kudzorwa nekugadzirisa tembiricha uye hunyoro hwekamuri yekupfapfaidza, nemafuta ekuputira kazhinji ari 20% -30%, ukuwo masimbi ekuputira ependi inonyungudutsa akakwira kusvika 60% -70%, saka kutsetseka kwependi yemvura iri nani.Zvisinei, inoda kupisa uye kuomeswa-kupenya, kana zvisina kudaro zviri nyore kuva nezvinetso zvehutano zvakadai sekurembera uye mabhuru.
1. Unyanzvi hwokugadzira michina
Kutanga, kuora kwemvura kwakakura kudarika kwezvinonyungudutsa, saka nzira yekuchenesa mvura inotenderera yekamuri yekupfira inoda kugadzirwa nesimbi isina tsvina;chechipiri, kuyerera kwemhepo yekamuri yekupfapfaidza kunofanirwa kuve kwakanaka, uye kumhanya kwemhepo kunofanirwa kudzorwa pakati pe0.2 ~ 0.6m/s.
Kana kuti vhoriyamu yekuyerera kwemhepo inosvika 28,000m3 / h, iyo inogona kusangana mune yakajairika yekubikira pendi imba.Uye imba yekuomesera nekuda kwekuwanda kwehunyoro mumhepo ichaitawo kukoromoka kumidziyo, saka madziro emukamuri yekuomesera anodawo kugadzirwa nezvinhu zvinorwisa-corrosion.
2. Automatic spray coating system
Iyo yakanyanya tembiricha yekamuri yekupfapfaidza yekupfapfaidza pendi yemvura ndeye 20 ~ 26 ℃, uye hunyoro hwehukama huri 60 ~ 75%.Tembiricha inotenderwa ndeye 20 ~ 32 ℃, uye inotenderwa hunyoro hunyoro ndeye 50 ~ 80%.
Naizvozvo, panofanira kunge paine tembiricha yakakodzera uye humidity inoronga michina muimba yekupfapfaidza.Tembiricha uye hunyoro hunogona kudzorwa mukamuri yekupfapfaidza yemukati auto pendi munguva yechando, asi tembiricha kana hunyoro haugone kudzorwa muchirimo, nekuti kutonhora kwakawanda muzhizha.
Munzvimbo dzinopisa uye dzine hunyoro hwepamusoro, unofanira kuisa central air conditioner muimba yekupfapfaidza usati washandisa mvura-basedcoatings, uye mhepo inotonhora inofanira kuendeswa muzhizha kuitira kuti ive nechokwadi chekuvakwa kwependi inobva mumvura.
3. Mimwe michina
(1) Mvura-based pendi spray pfuti
Kazhinji, mvura-based pendi yekupfapfaidza pfuti ine yakakwira vhoriyamu uye yakaderera pressure tekinoroji (HVLP) inoshandiswa.Chimwe chezvinhu zveHVLP ndeyepamusoro-soro yemhepo, iyo inowanzoita 430 L / min, saka kukurumidza kuoma kwependi yemvura inogona kuwedzerwa.
Pfuti dzeHVLP dzine mhepo yakakwira asi yakaderera atomization (15μm), kana ikashandiswa mumamiriro ekunze akaoma, inooma nekukasira uye ichiita kuti pendi ine mvura ibude zvisina kunaka.Naizvozvo, chete yepakati-kumanikidza uye yepakati-vhoriyamu pfuti ine yakakwira atomization (1μpm) ichapa zvirinani zvakazara maitiro.
Kutaura zvazviri, kukurumidza kuoma kwependi yemvura hakurevi chinhu kune varidzi vemotokari, uye chavanogona kuona kuenzana, kupenya uye ruvara rwepende.Nokudaro, pakupfapfaidza pendi yemvura, haufaniri kungotsvaga kukurumidza, asi unofanirwa kubhadhara zvakanyanya kuhuwandu hwekushanda kwependi yemvura, kuitira kuti ugutse muridzi wemotokari.
(2) Mvura-yakavakirwa pendi inoridza pfuti
Vamwe vanopfapfaidza vanonzwa mukuita kuti pendi yemvura inononoka kuoma kana ichienzaniswa nependi ine solvent, kunyanya muzhizha.Izvi zvinodaro nekuti pendi inonyungudika inoputika nekukurumidza uye nekuoma nyore muzhizha, nepo mvura-yakavakirwacoatingshaanyanyi kunzwa tembiricha.Ivhareji yenguva yekuomeswa kwependi yemvura (5-8 min) ishoma pane yependi inonyungudika.
Pfuti yepfuti yakakosha zvechokwadi, chiri chishandiso chekuomesa pendi ine mvura nemaoko mushure mekunge yapfapfaidzwa.Mazhinji emvura-yakavakirwa pendi inoridza pfuti pamusika nhasi inowedzera huwandu hwemhepo kuburikidza ne venturi mhedzisiro.
(3) Yakadzvanywa mhepo yekusefa michina
Unfiltered compressed air ine mafuta, mvura, guruva nezvimwe zvinosvibisa, izvo zvinokuvadza zvakanyanya kumvura-based pendi spraying operations uye zvinogona kukonzera zvakasiyana-siyana zvehutano hurema mumafirimu ependi, pamwe nekushanduka kunokwanisika mukumanikidzwa kwemhepo uye vhoriyamu.Rework nekuda kwekumanikidzwa kwehutano hwemhepo matambudziko kwete chete kuwedzera vashandi uye mari yemidziyo, asi zvakare inotadzisa mamwe mashandiro.
Kuchengetedza kwekuvaka kwependi yemvura
1. Little organic solvent inobvumira pendi-based pendi kuti isaita ne substrate, uye iyo diluting agent mvura inowedzera flash yakaoma nguva.Kupfapfaidza mvura kunoita kuti mvura idonhe zviri nyore pamakona akanyanya, saka haufanirwe kupfapfaidza gobvu kekutanga!
2. Chiyero chependi yemvura ndeye 10: 1, uye chete 10g yemvura-based diluting agent inowedzerwa ku 100g yependi yemvura inogona kuvimbisa kuvhara kwependi yakasimba yemvura!
3. Oiri inofanira kubviswa nemafuta-based degreaser isati yapfapfaidza pendi, uye mvura-based degreaser inofanira kushandiswa kupukuta uye kupfapfaidza, izvo zvakakosha, nekuti zvinogona kuderedza zvakanyanya mikana yezvinetso!
4. Mushonga unokosha uye jira rakakosha reguruva rinofanira kushandiswa pakusefa mvura-basedcoatings.
Nguva yekutumira: Jul-22-2022