Iindaba zeshishini

Ukusabalalisa ukuxuba ukusabalalisa amacandelo nge-melted; i-dispersive mixing breaks i-agglomerates okanye inciphisa ubungakanani besigaba esisasaziweyo. Uqwalaselo lwe-twin-screw luhlala lufuna zombini, kodwa ibhalansi kufuneka ilandele isiphene kunye nokwakheka kunokukhethwa kwi-chear ephezulu. Okokuqala uchonge ingxaki, emva koko uthelekise umgangatho wokuxuba ngaphakathi kwimida ye-thermal kunye neyomatshini yomgca.

Khetha i-conical twin screw extruder okanye i-parallel twin screw extruder ngokwenziwa kwePVC, ifestile yemveliso efunekayo kunye nolungelelwaniso lomatshini, hayi ileyibhile yejometri yodwa. Thelekisa imisebenzi yenkqubo elinganayo, emva koko ujonge imveliso eyamkelekileyo, umgangatho wemveliso, ukusetyenziswa kwamandla kunye nokuhambelana koomatshini. Kumgca osele ukho, thatha isigqibo sokuba ufuna iinxalenye ezitshintshiweyo okanye ulwakhiwo lomatshini olwahlukileyo phambi kokuba ucele ikowuteshini.

I-Extruder screw pitch yi-axial space phakathi kweenqwelomoya ezikufutshane; ukukhokela kukuqhubela phambili kwe-axial ye-helix enye ngokujika okupheleleyo. Ziyalingana kwicandelo eliqhelekileyo lokuqala elinye, kodwa hayi kwisikrufu ngasinye. Khetha utshintsho olukhokelayo ngempembelelo yalo ekutyaleni, ekunyibilikeni nasekuhanjisweni koxinzelelo, kunokuba ucinge ukuba isithuba esibanzi siqinisekisa iziphumo ezilungileyo.

Ubunzulu besiteshi se-Extruder buchaza isithuba phakathi kwengcambu ye-screw kunye nereferensi echaziweyo yangaphandle. Ijelo elinzulu libonelela ngesithuba esongezelelekileyo, kodwa aliziniki ngokuzenzekelayo iziphumo ezilunge ngakumbi ngokuchasene nokumelana nokufa. Khetha iprofayile ngokutyisa, ukunyibilika kunye nemisebenzi yokumpompa, kunye nemilinganiselo yokwenyani, imathiriyeli kunye nomphanda ohambelanayo ochaziweyo.

Isikruru esinye se-extruder L/D ratio bubude obuchaziweyo bokusebenza obahlulwe ngedayamitha yesikrufu segama. Yikhethe ngendawo efunekayo yokondla, ukunyibilika, ukuxuba, ukukhupha umoya kunye nophuhliso loxinzelelo, hayi ngokucinga ukuba isikrufu eside sikhupha iziphumo ezingaphezulu. Qinisekisa ubungakanani bedatha kunye nokuhambelana komatshini phambi kokuthelekisa iikowuteshini.

I-Extrusion screw compression ratio ichaza ukuncitshiswa komthamo wetshaneli ukusuka ekutyeni ukuya kwimitha; kwizikrufu eziqhelekileyo ezinelothe efanayo kuyo yomibini imimandla, iqhele ukubonakaliswa njengobunzulu bejelo lesondlo esahlulwe ngobunzulu bejelo lokulinganisa. Yikhethe ngobunzulu bokwenyani, ubude benguqu, isitokhwe kunye noyilo lomphanda, hayi kwigama lepolymer kuphela. Umlinganiselo ophezulu awuzenzeli isikrufu esingcono.