Oku kulandelayo yimigaqo ebalulekileyo ekufuneka uyikhumbule malunga ne-extrusion.Kufuneka bancede ukonga imali, bavelise iimveliso ezikumgangatho ophezulu, kwaye basebenzise izixhobo ngokufanelekileyo.
4. Isondlo sisebenza njengesipholisi.I-Extrusion kukudluliselwa kwamandla ukusuka kwi-motor-kwaye ngamanye amaxesha izifudumezi-kwiplastiki epholileyo, ngaloo ndlela iguqulelwe ukusuka kwinto eqinileyo ukuya kwinyibilika.Ifidi yokungena ipholile kunombhobho kunye nemiphezulu yesijivu kwindawo yokutya.Umphezulu webhere kwindawo yokutya, nangona kunjalo, phantse usoloko ungaphezulu koluhlu lokunyibilika kweplastiki.Ipholile ngokudibana namasuntswana angenayo, kodwa igcinwa ishushu ngokuqhutywa kobushushu ngasemva ukusuka kumphambili oshushu ongaphambili, kunye nokufudumeza kombhobho olawulwayo.Naxa isiphelo sangaphambili sigcinwa sishushu yi-viscous friction kwaye akukho galelo lobushushu lomphanda lifunekayo, izifudumezi zangasemva zinokufuna ukuba zivulwe.Eyona nto ibalulekileyo ngaphandle kwe-grooved -feed barrel, esetyenziswa phantse ngokukodwa kwi-HDPE.
Umphezulu wengcambu ye-screw nawo upholiswe yi-feed kwaye ifakwe kwi-barrel eludongeni ngamasuntswana okutya kweplastiki (kunye nomoya ophakathi kwabo).Ukuba isikrufu siyema ngesiquphe, ifidi nayo iyayeka, kwaye umphezulu we-screw uba shushu ngakumbi kwindawo yokutya njengoko ubushushu bubuyela umva ukusuka kumphambili oshushu ngaphambili.Oku kunokubangela ukuba amasuntswana ancamathele kwingcambu, okanye ibhuloho.
5. Ncamathela emgqomeni kwaye utyibilike kwisikrufu, kwindawo yokutya.Ubuninzi bezinto eziqinileyo ezihambisa kwi-feedzone ye-barrel egudileyo, i-extruder-screw extruder, amaqhekeza kufuneka anamathele kwi-barrel kwaye atyibilike kwi-screw.Ukuba amasuntswana anamathele kwingcambu ye-screw akukho nto yokuyikhupha;umthamo wejelo kunye ne-infeed yezinto eziqinileyo ziyancipha.Ukuncamathela kwingcambu kukwayinto engathandekiyo kuba iplastiki inokupheka apho kwaye ivelise iijeli kunye namasuntswana angcolisekileyo afanayo, okanye uncamathele kwaye uphuke uphumle ngokuqhubekayo kunye notshintsho oluhambelanayo kwireyithi yokuphuma.
Uninzi lweeplastiki ngokwemvelo zityibilika kwingcambu ngenxa yokuba zifika zipholile kwaye ingcambu ayitshisi kakhulu ngokukhuhlana njengodonga lombhobho.Ezinye iimathiriyeli zithande ukuncamathela kunezinye: iPVC eyenziwe ngeplastiki ephezulu, i-amorphous PET, kunye neepolymers zepololefin ezithile ezineempawu zokuncamathelisa ezidla ngokunqweneleka ekusetyenzisweni kwazo ekugqibeleni.
Ngokubhekiselele kumgqomo, iplastiki kufuneka ibambelele apho ukuze ikhuhlwe kwaye ityhalelwe phambili ngeenqwelomoya ezisijiva.Kufuneka kubekho i-coefficient ephezulu yokungqubuzana phakathi kwamasuntswana kunye ne-barrel, ethe yona iphenjelelwa ngamandla ngubushushu bombhobho wangasemva.Ukuba amasuntswana ebengancamathelanga ebeya kuqengqeleka nje angaqhubeki phambili—yiyo loo nto ukutya okumtyibilizi kungalunganga.
Ukukhuhlana komphezulu ayisiyiyo kuphela into echaphazela i-infeed.Amasuntswana amaninzi akaze achukumise umgqomo okanye i-screw root, ngoko ke kufuneka kubekho ukungqubana kunye noomatshini kunye ne-adhesive interlocking ngaphakathi kobunzima bepellet.
Imiphanda ekhutshiweyo yimeko ekhethekileyo.I-grooves ikwi-feedzone, ehlala yodwa nge-thermal ukusuka kuyo yonke i-barrel kwaye ipholise kakhulu amanzi.Iinqwelomoya zityhala iipellets ezantsi kwigrooves kwaye ngaloo ndlela ziphuhlise uxinzelelo oluphezulu kumgama omfutshane ngokumangalisayo.Oku kunyuswa kokuluma kuvumela i-screw rpm esezantsi kwimveliso efanayo, kungoko ubushushu obuncinci bokukhuhlana benziwa kwisiphelo sangaphambili, kunika iqondo lobushushu elisezantsi lokunyibilika.Oku kusenokuthetha imveliso ekhawulezayo kwimigca yefilim evuthelweyo epholileyo.Iigrooves ziyifanele kakhulu iHDPE, eyona nto imtyibilizi kuzo zonke iiplastiki eziqhelekileyo ngaphandle kwefluoroplastics.
6. Izinto eziphathekayo yeyona ndleko inkulu.Kwezinye iimeko iindleko zezinto eziphathekayo zifikelela kuma-80 ekhulwini eendleko zokwenziwa kwezinto—ngaphezu kwazo zonke ezinye izinto ezidityanisiweyo—ngaphandle kweemveliso ezimbalwa ezifana neekhethetha zonyango apho ukuqinisekiswa komgangatho nokupakishwa kubaluleke ngokungaqhelekanga.Lo mgaqo ngokwendalo ukhokelela kwizigqibo ezibini ezingaphezulu: Abaprosesa kufuneka baphinde basebenzise ukucheba nokulahlwa okuninzi kangangoko kunokwenzeka ngeendlela ezithatha indawo yemathiriyeli enyulu, kwaye bagcine ukunyamezelana kobungqingqwa obusondele kakhulu njengayo nayiphi na into enkulu kunobunzima benjongo ichithwa kwaye nantoni na engaphantsi komngcipheko wokungaphumeleli kwemveliso.
Ixesha lokuposa: May-17-2017