Oku kulandelayo yimigaqo ebalulekileyo ekufuneka uyikhumbule malunga ne-extrusion.Kufuneka bancede ukonga imali, bavelise iimveliso ezikumgangatho ophezulu, kwaye basebenzise izixhobo ngokufanelekileyo.
7. Iindleko zamandla azibalulekanga kangako.
Ngaphandle komtsalane odumileyo kunye neengxaki zokwenyani kwinqanaba leplanti kunye nokunyuka kweendleko zamandla, amandla afunekayo ukuqhuba i-extruder isengumlinganiselo omncinci kakhulu weendleko zokuvelisa zizonke.Oku kuya kuhlala kunjalo kuba ixabiso lezinto eziphathekayo liphezulu kakhulu, i-extruder yinkqubo esebenzayo, kwaye ukuba amandla angaphezulu angenisiwe iplastiki iya kutshisa ngokukhawuleza ukuba iqhube kakuhle.
8. Uxinzelelo kwi-screw tip lubalulekile.
Olu xinzelelo lubonisa ukuxhathisa kwayo yonke into esezantsi kwesikrufu: izikrini kunye nosulelo, ipleyiti yebreaker, iadaptha, iityhubhu zokudlulisa, imixube engatshintshiyo (ukuba isetyenzisiwe), kunye nokufa ngokwayo.Ayixhomekanga kuphela kwijometri yala macandelo, kodwa nakwiqondo lokushisa kwinkqubo, echaphazela i-resin viscosity kunye nesantya sokuphuma.Ayixhomekekanga kuyilo lwesijija, ngaphandle kokuba ichaphazela ubushushu, i-viscosity, kunye ne-throughput.
Uxinzelelo lokulinganisa lubalulekile ngenxa yezizathu zokhuseleko-ukuba luphezulu kakhulu, intloko kunye nokufa kunokuvuthela kwaye kwenzakalise okanye konakalise abantu okanye oomatshini abakufutshane.
Uxinzelelo lulungile ukuxuba, ngokukodwa kwindawo yokugqibela (yemitha) kwiinkqubo ze-screw single.Nangona kunjalo, uxinzelelo oluphezulu lukwathetha ukuba amandla amaninzi athatyathwa ngemoto-ngaloo ndlela iqondo lokushisa liphezulu lokunyibilika-elinokuthi lilawule umda woxinzelelo.Kwizikrufu ezingamawele, ukudityaniswa kwezikrufu ezibini ngumxube osebenza ngakumbi, ngoko ke uxinzelelo alufuneki kule njongo.
Ekwenzeni izinto hollow, ezifana umbhobho kunye spider die esebenzisa iingalo ukubamba umbindi core endaweni, uxinzelelo oluphezulu kufuneka iveliswe kwifa ukunceda imijelo ekwahlulwayo weld kunye kwakhona.Kungenjalo, imveliso inokuba buthathaka ecaleni kwezi weldlines kwaye inokusilela kwinkonzo.
9. Isiphumo = ukufuduka kwendiza yokugqibela, +/ - ukuhamba koxinzelelo kunye nokuvuza.
Ukufuduswa kwenqwelomoya yokugqibela kubizwa ngokuba kukuhamba kokutsalwa, kwaye kuxhomekeke kuphela kwijiyometri yesikrufu, isantya sokujiya, kunye noxinzelelo lokunyibilika.Iguqulwa yinkqubo yoxinzelelo, eneneni iqulethe impembelelo yokumelana (ebonakaliswe ngoxinzelelo lwentloko) ukunciphisa imveliso, kunye nesiphumo saso nasiphi na i-overbite kwisondlo sokwandisa imveliso.Ukuvuza kwiinqwelomoya kusenokubakho kulo naliphi na icala.
Kukwaluncedo ukubala imveliso nge-rpm nganye, njengoko oku kubonisa nakuphi na ukuwohloka komthamo wokumpompa wesikrufu ngexesha.Oku kukusebenza kakuhle kwaye kwenza ukuba uqikelelo lwesakhono semveliso yemoto enikiweyo kunye nokuqhuba.
10. Izinga le-shear lidlala indima ephambili kwi-viscosity.
Zonke iiplastiki eziqhelekileyo ziyi-chear-thinning, oku kuthetha ukuba i-viscosity iyancipha njengoko iplastiki ihamba ngokukhawuleza kwaye ikhawuleza.Ezinye iiplastiki zibonisa esi siphumo ngokumangalisayo.Ezinye ii-PVCs, umzekelo, zihamba amaxesha ali-10 okanye ngaphezulu ngokukhawuleza ngokuphinda-phinda kabini kokutyhala.I-LLDPE, ngokuchaseneyo, ayichebi -ibhityile kakhulu, kwaye ukuphinda-phinda kabini kwamandla okutyhala kwandisa ukuhamba kwayo ngamaxesha amathathu ukuya kwamane kuphela.Isiphumo esincitshisiweyo se-chear-thinning sithetha i-viscosity ephezulu kwiimeko ze-extrusion, oku kuthetha ukuba kufuneka amandla amaninzi emoto.Oku kucacisa ukuba kutheni i-LLDPE ibaleka shushu kune-LDPE.
Ukuhamba kubonakaliswa ngokwezinga lokucheba, elijikeleze i-100 sec -1 kwi-screw channels, phakathi kwe-100 kunye ne-1000 sec-1 kuninzi lwemilebe yokufa, kwaye ngaphezulu kwe-1000 sec -1 kucoceko olusuka eludongeni kunye nokunye. izithuba ezincinci zokufa.Isalathisi sokunyibilika ngumlinganiselo oqhelekileyo we-viscosity kodwa uguqulwe (oko kukuthi, ukuhamba / ukutyhala endaweni yokutyhala / ukuhamba).Ngelishwa, ilinganiselwa kwiireyithi zokucheba ze-10 sec -1 okanye ngaphantsi kwaye isenokungabi ngumlinganiselo wokwenyani kwi-extruder apho inyibiliko ihamba ngokukhawuleza okukhulu.
11. I-motor iyayichasa i-barrel, i-barrel iyayichasa i-motor.
Ndaqala ngemigaqo ye-10 ephambili ye-extrusion, kodwa le nto yayibaluleke kakhulu kangangokuba kwafuneka ndiyifake, nayo.UMthetho weShumi elinanye kungenxa yokuba ulawulo lomphanda lungasoloko lusebenza ngendlela efunwa ngayo okanye njengoko kulindelekile, ngakumbi kwindawo yokulinganisa iimitha.Ukuba umgqomo ushushu, umaleko wezinto eziseludongeni lomgqomo uba yi-viscous encinci kwaye i-motor idinga amandla amancinci ukujika kulo mgqomo ugcotyiweyo.I-Motor current (amps) ihla.Ngokwahlukileyo, ukuba umgqomo upholisiwe, ukunyibilika kudonga lomgqomo kuba yi-viscous ngakumbi, i-motor kufuneka isebenze ngakumbi, i-amps inyuke, kwaye enye yobushushu isuswe ngomgqomo ibekwe ekunene kwakhona yi-motor.Ngokwesiqhelo, abalawuli bomgqomo banefuthe ekunyibilikeni okunqwenelwayo, kodwa akukho ndawo ingakanani na njengexabiso lokutshintsha indawo.Kungcono ukulinganisa iqondo lobushushu lokunyibilika ukuze uqonde ukuba kwenzeka ntoni na.
Ixesha lokuposa: May-27-2017