Preheating Temperature Control MuFluidized Bed Dipping process
Background Sumo
Mukuita kwekunyungudutsa pamubhedha , simba rekupisa remuchina webasa rinoshandiswa kunyungudutsa upfu hwethermoplastic uye kuwana ukobvu uye mhando yejira rinodiwa. Nokudaro, kuziva tembiricha yakakodzera yekupisa yemuchina webasa kwakakosha. Tembiricha yekupisa inofanira kunge yakakwira zvishoma pane tembiricha yekunyunguduka kweupfu hwethermoplastic. Kana yakanyanya kukwira, zvikanganiso zvekuyerera kwemvura zvinogona kuitika nekuda kwekunyunguduka kwakanyanya kana kuputika kwepolymer resin, zvichikonzera mabubbles, yero kana kupisa. Kusiyana neizvi, kana yakaderera zvakanyanya, kunyunguduka kusina kukwana kunotungamira kupurasitiki yakatetepa ine kuvharika kwepamusoro kana kusakwana kwemvura iyo inokundikana kuzadzisa zvinangwa zvekunyungudutsa.
Kazhinji, tembiricha yekupisa kweiyo workpiece inopesvedzerwa nezvinhu zvakaita sechinhu chayo, saizi, chimiro, thermoplastic poda kuita, ukobvu hwehuputi hunodiwa, nguva yekudziya, uye nguva yekunyudza. Nekudaro, mukushanda kunoshanda, maworkpiece anosiyana zvakanyanya maererano nehukuru, saizi uye chimiro, zvichiita kuti zviome kuona tembiricha yekupisa kwehuwandu.
Kuti tiongorore tembiricha yakakodzera yekudziisa zvinhu zvebasa panguva yekunyudza upfu hwemubhedha hwakasanganiswa nemvura , tinoshandisa sisitimu yedu yekunyudza upfu hwemubhedha yakazvigadzira uye yakagadzirwa nega. Nekubatanidza izvi neruzivo rwedu mukugadzira zvigadzirwa zvakasiyana-siyana zvakaita semafenzi ekuparadzanisa traffic, mambure ekudzivirira ekuvaka mubindu nemaguta, masherufu efiriji, masherufu ekutenga, mambure ekugadzira macage, maspring, nemapombi esimbi tichishandisa upfu hwakasiyana hwethermoplastic, kuyedza uku kunopa hwaro hwedzidziso uye nzira yekugadzirisa maitiro ekunyudza.
Nzira dzekuedza
1.Sample Kugadzirira
Mienzaniso yacho inonyanya kuumbwa nesimbi yakaita shamhu, iinewo imwe yemhangura nealuminium, ine madhayamita 0.8, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0, 14.0, 16.0, 18.0. , 20.0
2.Thermoplastic Powder
LDPE thermoplastic poda yainyanya kushandiswa mukuyedza, nepo PVC, PA, nehumwe hupfu hwakaiswawo kuongororwa.
3.Process
Kufanorapwa → preheat → kunyikwa muupfu → post-kupisa ( kurapa) → kutonhora
4.Coating Quality
Matembiricha ekutanga ekupisa akasiyana akashandiswa kunyudza masampuli ataurwa mune akasiyana thermoplastic poda; mushure mekudzika-tembiricha yekurapa uye kuyera maitiro, iyo yekubikira mhando yakaongororwa uye yakanyorwa muTafura 1, Tafura 2, uye Tafura 3.
Ongororo yeZvinhu Zvinokurudzira
Zvichienderana nemhedzisiro yekuyedza uye pamwe neiyo data yakapihwa muTebhurari 1, Tafura 2, uye Tafura 3, curve yakarongerwa kumiririra yakakwana preheating tembiricha kukosha kwemuenzaniso wega wega, sezvakaratidzwa mumufananidzo.
Kukanganisa kweThermoplastic Powder
Iyo yekudziya curve yeworkpiece inosiyana kune akasiyana poda resins, sezvakaratidzwa mumufananidzo uri pamusoro. Nekuda kwehupamhi pakati penzvimbo yekunyorovera (80 - 90 ℃) uye nzvimbo yekunyungudika (105 - 130 ℃) ye polyethylene. (PE), pamwe chete nekutsemuka tembiricha ye300 ℃, yakakwirira preheating tembiricha inodiwa kune workpiece. Chete kana kuchipisa patembiricha inodarika 360 ℃ kwenguva yakareba ndipo panoitika yellowing pajasi.
Polyvinyl chloride (PVC) inoshaya nzvimbo yekunyungudika yakasarudzika asi inotanga kupfava pa130 ℃ uye inogona kuyerera pa180 ℃. Inotanga kuora pamusoro pe200 ℃, ichiburitsa hydrogen chloride, chiutsi, uye ichiburitsa hwema hwemhino. Kuwedzera kudiki kwetembiricha kana nguva yakareba yekuratidzira zvishoma nezvishoma zvinokonzeresa kutsvuka uye kusviba kwejasi. As PVC's tembiricha yekunyungudika iri padhuze nekuora kwayo tembiricha, kudzora kwakasimba pamusoro peiyo workpiece's preheating tembiricha inodiwa.
Polyamide (PA) machira (kazhinji naironi 1010, naironi 11, naironi12) ane nzvimbo yekunyunguduka kubva pa180 kusvika 230 ℃ uye tembiricha yekuora inodarika 300 ℃; zvisinei, siyana pakati kunyunguduka uye kuora tembiricha anoramba akamanikana. Nylon dipping kazhinji inoda kutonhora nekukurumidza, uye kudzora tembiricha yekupisa kunoratidza kunetsa.
Kufurira Kubva Kukobvu Kwebasa
Muchidzidzo, iyo preheating tembiricha yeworkpiece inofanira kunge yakakwira zvishoma pane tembiricha yekunyungudika kwehupfu kuitira kuti upfu hupore uye kuisa panzvimbo yesimbi. Nekudaro, mibairo yekuyedza inoratidza misiyano yakakura mukupisa kwekutanga tembiricha yezvishandiso zvine madhayamita akasiyana uye ukobvu. Izvi zvinokonzerwa nehukuru hwekupisa huwandu hwezvakakora zvekushanda, izvo zvinotadzisa kunyatsopisa kupisa mushure mekupisa uye zvinotungamira kune kushoma kushanduka kwetembiricha panguva yekufambisa kubva muchoto kuenda kune poda tank. Nekuda kweizvozvo, tembiricha yakakwira yekupisa haigone kuiswa kune dzakakora workpieces; pachinzvimbo, dzinofanira kudziyirwa patembiricha yakaderera kwenguva refu. Sezvineiwo, zvidimbu zvidiki zvekushanda zvine hushoma hwekupisa uye zvinobvisa kupisa nekukurumidza, zvichidikanwa kushandiswa kwe "thermal shock effect" kuburikidza nepamusoro petembiricha yekupisa yekunyungudika yehupfu. Ultra-yakaonda workpieces ine kushoma kupisa kugona uye kunyangwe neakakwira tembiricha zvinova zvinonetsa kuwana yakakwana yekunamatira adhesion.
Kune maworkpiece akagadzirwa kubva mumidziyo ine madhayamita akasiyana kana ukobvu, kutarisisa kwakadzama kunofanirwa kupihwa kana uchitarisa tembiricha yekupisa - kuve nechokwadi chekuti tembiricha yakaderera inovimbisa kuvharika kwekuvhara kwakazara munzvimbo dzakatetepa uchidzivirira kutsvuka pazvikamu zvakakora nekusarudza muganho wakakodzera wepamusoro.
Kupesvedzera Kwechishandiso Chinyorwa
Mazhinji ebvunzo maworkpiece ataurwa pamusoro anogadzirwa neakaderera kabhoni simbi. Kune mhando dzakasiyana dzesimbi, ingave iri kabhoni simbi kana alloy simbi, iyo preheating tembiricha ine mashoma maitiro. Preheating tembiricha yemhangura yakafanana neyesimbi asi yakakwirira zvishoma. Aluminium ine fast heat conduction uye dissipation, saka preheating tembiricha inofanira kunge yakakwira.
Kufurira kweChimiro Chekushanda
Ongororo dzakaitwawo pazvishandiso zvine maumbirwo akasiyana, zvichiratidza kuti mativi akasimba anoratidza kunonoka kupisa kwekupisa uye kunyungudika kwemazinga, ukuwo akavharwa maburi senge tubular components anoratidzawo kudzikisira kupisa. Sezvineiwo, mesh uye zvikamu zvakatetepa zvinosangana nekurasikirwa nekupisa kwakanyanya. Chiyero chekuchengetedza kupisa uye kuparara kunonyanya kutsanangurwa nehuwandu-kusvika-pamusoro penzvimbo yebasa rekushanda. Naizvozvo, zvinodikanwa kugadzirisa tembiricha yepreheating zvichibva pane yakakodzera coefficient inoenderana neiyo workpiece chimiro. Imwe tsvakurudzo inodiwa munzvimbo iyi.
mhedziso
- Kupisa kwekupisa kweiyo workpiece ndiyo inonyanya kukosha pakusarudza kunaka kwekuputira panguva yekunyungudutswa kwemubhedha.
- Iyo preheating tembiricha yeworkpiece inonyanya kutsanangurwa nedhayamita kana ukobvu, uye inogona kutariswa nekutaura kune Figure 1 yekutungamira.
- Yakasiyana poda resin ine mapoinzi ekunyungudika akasiyana uye mapoinzi ekuora, ayo anofanirwa kutariswa zvizere pakusarudza nzira yekunyurura.
- Izvo zvinhu uye chimiro cheworkpiece chinokanganisawo tembiricha inodiwa preheating, iyo inogona kubhadharwa uchishandisa kugadzirisa chinhu.
