Plastiki ea ABSe nka boemo ba bohlokoa indastering ea lisebelisoa tsa elektroniki, indasteri ea mechini, lipalangoang, thepa ea kaho, tlhahiso ea lintho tsa ho bapala le liindasteri tse ling ka lebaka la matla a eona a holimo a mochini le ts'ebetso e ntle e felletseng, haholoholo bakeng sa meaho e meholoanyane ea mabokose le likarolo tsa khatello ea maikutlo. , likarolo tse khabisitsoeng tse hlokang electroplating ha li arohane le polasetiki ena.
1. Ho omisa polasetiki ea ABS
Plastiki ea ABS e na le hygroscopicity e phahameng le kutlo e phahameng ea mongobo. Ho omisa ho lekaneng le ho futhumatsa pele ho sebetsa ho ke ke ha felisa feela li-bubble tse kang li-firework le likhoele tsa silevera holim'a sebaka sa mosebetsi se bakoang ke mouoane oa metsi, empa hape se thusa li-plastiki ho theha, ho fokotsa letheba le moiré holim'a sebaka sa mosebetsi. Mongobo oa lisebelisoa tse tala tsa ABS o lokela ho laoloa ka tlase ho 0.13%.
Maemo a ho omisa pele a etsoa ka ente: Mariha, mocheso o lokela ho ba ka tlase ho 75-80 ℃, 'me o tšoarelle lihora tse 2-3; lehlabula, mocheso o lokela ho ba ka tlase ho 80-90 ℃ mme o tšoarelle lihora tse 4-8. Haeba workpiece e hloka ho shebahala e benya kapa mosebetsi ka boeona o rarahane, nako ea ho omisa e lokela ho ba telele, ho fihla lihora tse 8 ho isa ho tse 16.
Ka lebaka la boteng ba mongobo oa trace, moholi o holim'a metsi ke bothata boo hangata bo hlokomolohuoang. Ho molemo ho fetola hopper ea mochine hore e be se omisitsoeng ka moea o chesang ho thibela ABS e omisitsoeng ho monya mongobo hape ka har'a hopper. Matlafatsa tlhokomelo ea mongobo ho thibela mocheso o feteletseng oa thepa ha tlhahiso e sitisoa ka phoso.
2. Mocheso oa ente
Kamano e teng lipakeng tsa mocheso le viscosity ea ho qhibiliha ea polasetiki ea ABS e fapane le ea lipolasetiki tse ling tsa amorphous. Ha mocheso o ntse o eketseha nakong ea ts'ebetso ea ho qhibiliha, ho qhibiliha ha e le hantle ho fokotseha haholo, empa hang ha ho fihla mocheso oa polasetiki (mocheso oa mocheso o loketseng ho sebetsa, joalo ka 220 ~ 250 ℃), haeba mocheso o ntse o eketseha ka bofofu, ho hanyetsa mocheso. e ke ke ea e-ba holimo haholo. Ho senyeha ha mocheso oa ABS ho eketsa viscosity ea ho qhibiliha, ho etsaho bopa ka enteho thata le ho feta, 'me thepa ea mechine ea likarolo e boetse e fokotseha.
Ka hona, mocheso oa ente ea ABS o phahame ho feta oa lipolasetiki tse kang polystyrene, empa o ke ke oa ba le mocheso o fokolang oa ho phahama joaloka oa morao-rao. Bakeng sa mechine e meng ea ho etsa ente e nang le taolo e mpe ea mocheso, ha tlhahiso ea likarolo tsa ABS e fihla palo e itseng, hangata ho fumanoa hore likaroloana tsa coking tse mosehla kapa tse sootho li kenngoa likarolong, 'me ho thata ho li tlosa.
Lebaka ke hore polasetiki ea ABS e na le likarolo tsa butadiene. Ha karoloana ea polasetiki e khomarela ka thata holim'a libaka tse ling tsa "screw groove" tseo ho seng bonolo ho li hlatsoa ka mocheso o phahameng, 'me li kenngoa mocheso o phahameng oa nako e telele, li tla baka ho senyeha le carbonization. Kaha ts'ebetso e phahameng ea mocheso e ka baka mathata bakeng sa ABS, hoa hlokahala ho fokotsa mocheso oa sebōpi sa karolo ka 'ngoe ea barrel. Ehlile, mefuta e fapaneng le libopeho tsa ABS li na le mocheso o fapaneng oa sebōpi. Joalo ka mochini oa plunger, mocheso oa sebōpi o bolokiloe ho 180 ~ 230 ℃; le mochini oa screw, mocheso oa sebōpi o bolokiloe ho 160 ~ 220 ℃.
Ho bohlokoa haholo ho bolela hore, ka lebaka la mocheso o phahameng oa ts'ebetso ea ABS, e ela hloko liphetoho tse fapaneng tsa ts'ebetso. Ka hona, taolo ea mocheso ea karolo e ka pele ea moqomo le karolo ea nozzle e bohlokoa haholo. Boitlhakiso bo pakile hore liphetoho leha e le life tse nyenyane likarolong tsena tse peli li tla bonahala likarolong. Ha mocheso o fetoha haholo, o tla tlisa likoli tse kang seam se cheselletsang, botlolo bo fokolang, flash, mold sticking, discoloration joalo-joalo.
3. Khatello ea ente
Viscosity ea likarolo tse qhibilihisitsoeng tsa ABS e phahame ho feta ea polystyrene kapa modified polystyrene, kahoo khatello e phahameng ea ente e sebelisoa nakong ea ente. Ehlile, ha se likarolo tsohle tsa ABS tse hlokang khatello e phahameng, 'me likhatello tse tlase tsa ente li ka sebelisoa bakeng sa likarolo tse nyane, tse bonolo le tse teteaneng.
Nakong ea ts'ebetso ea ente, khatello ea sekoti nakong eo heke e koetsoeng hangata e lekanyetsa boleng ba bokaholimo ba karolo le tekanyo ea bofokoli ba silevera ea filamentous. Haeba khatello e le nyenyane haholo, polasetiki e fokotseha haholo, 'me ho na le monyetla o moholo oa hore o se ke oa kopana le holim'a sekoti,' me bokaholimo ba mosebetsi oa matsoho bo na le atomized. Haeba khatello e le khōlō haholo, ho ferekana pakeng tsa polasetiki le holim'a sekoti ho matla, ho leng bonolo ho baka ho khomarela.
4. Lebelo la ente
Bakeng sa lisebelisoa tsa ABS, ho molemo ho enta ka lebelo le bohareng. Ha lebelo la ente le potlakile haholo, polasetiki e bonolo ho chesoa kapa ho senyeha le ho khase, e leng se tla lebisa ho mefokolo e kang li-weld seams, khanya e mpe le bofubelu ba polasetiki haufi le heke. Leha ho le joalo, ha ho etsoa likarolo tse tšesaane le tse rarahaneng, ho ntse ho hlokahala ho netefatsa lebelo le lekaneng la ente, ho seng joalo ho tla ba thata ho tlatsa.
5. Mocheso oa hlobo
Mocheso oa ho bopa oa ABS o batla o phahame, hammoho le mocheso oa hlobo. Ka kakaretso, mocheso oa hlobo o fetoloa ho 75-85 ° C. Ha ho etsoa likarolo tse nang le sebaka se seholo se lekanyelitsoeng, mocheso o tsitsitseng oa hlobo o hlokeha ho ba 70 ho isa ho 80 ° C, 'me mocheso oa hlobo o tsamaeang o hlokeha ho ba 50 ho isa ho 60 °C. Ha u kenya likarolo tse kholo, tse rarahaneng, tse tšesaane tse nang le marako, ho futhumatsa ho khethehileng ha hlobo ho lokela ho nkoa. E le ho khutsufatsa potoloho ea tlhahiso le ho boloka botsitso bo lekanyelitsoeng ba mocheso oa hlobo, ka mor'a hore likarolo li ntšoe, ho hlapa metsi a batang, ho hlapa metsi a chesang kapa mekhoa e meng ea ho beha mochine ho ka sebelisoa ho lefella nako ea pele ea ho lokisa serame. lesoba.
Nako ea poso: Apr-13-2022
