Iplastiki ye-ABSikwindawo ebalulekileyo kushishino lombane, ishishini loomatshini, ezothutho, izixhobo zokwakha, ukwenziwa kwezinto zokudlala kunye namanye amashishini ngenxa yamandla alo omatshini aphezulu kunye nokusebenza kakuhle okubanzi, ngakumbi kwizakhiwo zebhokisi ezinkulu kancinci kunye namacandelo oxinzelelo. , iindawo zokuhombisa ezidinga i-electroplating azinakwahlulwa kule plastiki.
1. Ukomiswa kweplastiki ye-ABS
Iplastiki ye-ABS ine-hygroscopicity ephezulu kunye novakalelo oluphezulu lokufuma. Ukomisa okwaneleyo kunye nokushisa kwangaphambili ngaphambi kokucubungula akukwazi kuphela ukuphelisa amaqamza afana ne-firework-like kunye nemicu yesilivere ebusweni bomsebenzi obangelwa ngumphunga wamanzi, kodwa unokunceda iiplastiki ukuba zenze, ukunciphisa i-stain kunye ne-moiré phezu kwendawo yokusebenza. Isiqulatho sokufuma semathiriyeli ekrwada ye-ABS kufuneka ilawulwe ngaphantsi kwe-0.13%.
Iimeko zokomisa ngaphambi kokubunjwa kwesitofu: Ebusika, ubushushu kufuneka bube ngaphantsi kwe-75-80 ℃, kwaye buhlale iiyure ezingama-2-3; ehlotyeni, iqondo lobushushu kufuneka libe ngaphantsi kwama-80-90 ℃ kwaye lihlale iiyure ezi-4-8. Ukuba i-workpiece kufuneka ibonakale i-glossy okanye i-workpiece ngokwayo inzima, ixesha lokumisa kufuneka libe lide, lifikelele kwiiyure ezisi-8 ukuya kwezi-16.
Ngenxa yobukho bomkhondo wokufuma, inkungu phezu komhlaba yingxaki ehlala ingahoywa. Kungcono ukuguqula i-hopper yomatshini kwi-hopper air dryer eshushu ukukhusela i-ABS eyomileyo ukuba iphinde ifunxe umswakama kwi-hopper. Yomeleza ujongo lokufuma ukuze uthintele ukufudumeza okugqithisileyo kwemathiriyeli xa imveliso iphazamisekile ngempazamo.
2. Iqondo lokushisa lokutofa
Ubudlelwane phakathi kobushushu kunye nokunyibilika kwe-viscosity ye-ABS yeplastiki yahlukile kwezinye iiplastiki ze-amorphous. Xa iqondo lobushushu linyuka ngexesha lenkqubo yokunyibilika, ukunyibilika kuncipha kancinci kakhulu, kodwa xa sele kufikelele kwiqondo lobushushu leplastikhi (uluhlu lweqondo lobushushu olulungele ukusetyenzwa, olunje ngama-220 ~ 250 ℃), ukuba ubushushu buyaqhubeka bukhula ngokungaboni, ukumelana nobushushu. ayiyi kuba phezulu kakhulu. Ukuthotywa kwe-thermal ye-ABS kwandisa i-viscosity yokunyibilika, ukwenzaisitofu sokubumbakunzima ngakumbi, kunye neempawu zoomatshini zamacandelo nazo ziyancipha.
Ke ngoko, iqondo lobushushu benaliti ye-ABS liphezulu kunolo lweplastiki efana ne-polystyrene, kodwa ayinakuba noluhlu lokunyuka kwamaqondo obushushu njengale yokugqibela. Kwabanye oomatshini bokubumba benaliti abanolawulo olubi lobushushu, xa ukuveliswa kweenxalenye ze-ABS kufikelela kwinani elithile, kudla ngokufunyaniswa ukuba amasuntswana e-coking atyheli okanye amdaka afakwe kwiindawo, kwaye kunzima ukuyisusa.
Isizathu kukuba iplastiki ye-ABS iqulethe izinto ze-butadiene. Xa i-particle yeplastiki ibambelela ngokuqinileyo kwezinye iindawo kwi-screw groove ekungekho lula ukuhlanjwa kwiqondo lokushisa eliphezulu, kwaye ixhomekeke kwiqondo lokushisa elide elide, liya kubangela ukuthotywa kunye ne-carbonization. Ekubeni ukusebenza kweqondo lokushisa eliphezulu kunokubangela iingxaki kwi-ABS, kuyimfuneko ukunciphisa ubushushu bomlilo wecandelo ngalinye lombhobho. Ewe kunjalo, iintlobo ezahlukeneyo kunye nokwakheka kwe-ABS zineqondo lobushushu elisebenzayo elisebenzayo. Njengomatshini weplunger, ubushushu beziko bugcinwa kwi-180 ~ 230 ℃; kunye nomatshini wokujija, ubushushu beziko bugcinwa kwi-160 ~ 220 ℃.
Kubaluleke kakhulu ukukhankanya ukuba, ngenxa yokushisa okuphezulu kwe-ABS, inomdla kutshintsho kwizinto ezahlukeneyo zenkqubo. Ngoko ke, ukulawulwa kweqondo lokushisa kwesiphelo sangaphambili sombhobho kunye nenxalenye ye-nozzle kubaluleke kakhulu. Ukuziqhelanisa kubonakalise ukuba naluphi na utshintsho oluncinci kula macandelo mabini luya kubonakaliswa kumacandelo. Okukhona utshintsho olukhulu lobushushu, luya kuzisa iziphene ezifana ne-weld seam, iglosi engalunganga, iflash, ukuncamathela kokungunda, ukujika kombala njalo njalo.
3. Uxinzelelo lwesitofu
I-viscosity yeendawo ezinyibilikisiweyo ze-ABS ziphezulu kune-polystyrene okanye i-polystyrene elungisiweyo, ngoko ke uxinzelelo oluphezulu lwenaliti lusetyenziswa ngexesha lokutofa. Ewe, ayingawo onke amalungu e-ABS afuna uxinzelelo oluphezulu, kwaye uxinzelelo lwenaliti esezantsi lunokusetyenziswa kwiindawo ezincinci, ezilula, kunye nezityebileyo.
Ngethuba lenkqubo yokutofa, uxinzelelo kwi-cavity ngeli xesha xa isango livaliwe lihlala limisela umgangatho wendawo yenxalenye kunye neqondo le-filamentous defects yesilivere. Ukuba uxinzelelo luncinci kakhulu, iplastiki iyancipha kakhulu, kwaye kukho ithuba elikhulu lokungadibanisi nomphezulu we-cavity, kwaye umphezulu we-workpiece i-atomized. Ukuba uxinzelelo lukhulu kakhulu, ukungqubuzana phakathi kweplastiki kunye nobuso bombhobho bunamandla, okulula ukubangela ukunamathela.
4. Isantya sokutofa
Kwizinto ze-ABS, kungcono ukujova ngesantya esiphakathi. Xa isantya sokutofa sikhawuleza kakhulu, iplastiki kulula ukutshiswa okanye ukubola kunye negesi, okuya kukhokelela kwiziphene ezifana ne-weld seams, igloss engalunganga kunye nobomvu beplastiki kufuphi nesango. Nangona kunjalo, xa uvelisa iindawo ezinqabileyo ezinodonga kunye nezintsonkothileyo, kusafuneka ukuba kuqinisekiswe isantya esiphezulu ngokwaneleyo, ngaphandle koko kuya kuba nzima ukuzalisa.
5. Ubushushu bomngundo
Ubushushu bokubumba be-ABS buphezulu, kunye nobushushu bokubumba. Ngokubanzi, iqondo lobushushu lokungunda lihlengahlengiswa ukuya kuma-75-85 °C. Xa uvelisa iindawo ezinommandla omkhulu oqikelelweyo, ubushushu obumiselweyo bokungunda bufuneka ukuba bube yi-70 ukuya kuma-80 °C, kwaye ubushushu bokungunda obushukumayo bufuneka bube yi-50 ukuya kuma-60 °C. Xa ujova iindawo ezinkulu, eziyinkimbinkimbi, ezincinci, ukufudumeza okukhethekileyo kwesikhunta kufuneka kuthathelwe ingqalelo. Ukuze unciphise umjikelo wemveliso kunye nokugcina uzinzo olunxulumene nobushushu bomngundo, emva kokuba iinxalenye zikhutshiwe, ibhafu yamanzi abandayo, isitya sokuhlambela samanzi ashushu okanye ezinye iindlela zokuseta oomatshini zingasetyenziselwa ukuhlawulela ixesha lokuqala lokumisa abandayo. umgodi.
Ixesha lokuposa: Apr-13-2022
