1. Core Mechanical Wear thiab Clearances
Mechanical hnav yog qhov kev sib tw loj tshaj plaws uas siv cov cuab yeej siv, vim nws ncaj qha hloov cov khoom siv qhov tseem ceeb tshem tawm qhov ntev.
Ib txwm hnav thiab nce kev tshem tawm: Thaum lub sijhawm ua haujlwm, hnav ntawm cov ntsia hlau thiab lub thoob yog qhov kev zam. Qhov hnav no ua rau kom muaj kev tshem tawm ntawm ob qho tib si, tshwj xeeb tshaj yog nyob rau hauv homogenization seem. Qhov no exacerbates cov ntaub ntawv rov qab thiab to, ua rau hloov pauv hauv extrusion siab thiab txo cov zis.
Pub Section Casing Wear (Cog hauv paus ntawm cov ntaub ntawv): Rov ua dua lub tog raj kheej hloov yam tsis muaj kev saib xyuas ntawm cov khoom seem casing ua rau muaj kev tsis sib haum xeeb ntawm lub tsho hnav thiab lub tog raj kheej tshiab, tsim kom muaj "kauj ruam" uas cuam tshuam cov khoom nkag thiab kev ua haujlwm tsawg.
Hnav ntawm Diverter Phaj: Hnav ntawm lub taub hau tuag thiab diverter phaj nyob rau hauv pem hauv ntej ntawm lub tog raj kheej tsub kom cov dej xau thaum lub sij hawm cov khoom ntws, uas kuj ua rau txo qis hauv cov zis.
Main ncej hnav: Hnav ntawm lub ntsiab ncej cuam tshuam rau kev ruaj ntseg ntawm tus tsav thiab kev sib hloov, uas nyob rau hauv lem cuam tshuam cov zis.
2. Cov qauv thiab tsim ntawm cov ntsia hlau thiab chim
Tus tsim ntawm lub hau ntswj thiab lub thoob ncaj qha txiav txim siab lub theoretical sab sauv txwv ntawm extruder lub peev xwm ntau lawm.
Screw Geometric Parameters: Ib qho extruder lub peev xwm ntau lawm yog kwv yees li proportional rau lub square ntawm lub taub hau ntsia hlau. Qhov ntev - mus rau - txoj kab uas hla (L/D) cuam tshuam cov khoom sib xyaw thiab plasticization, thiab qhov tsim nyog ntsia hlau zawj qhov tob kuj tseem ceeb heev.
Screw Designs tshiab: Kev siv cov tshiab, siab - cov qauv siv ntsia hlau ua haujlwm yog ib txoj hauv kev zoo los ua kom muaj peev xwm ntawm cov khoom qub.
Ntxaib-Cov Ntsia Hlau Ntsia Hlau: Rau ntxaib- ntsia hlau extruders, kev sib xyaw ua ke, kev teeb tsa, thiab hnav ntawm cov ntsiab lus ntsia hlau yog qhov nyuaj dua li hauv ib qho - ntsia hlau extruders, cuam tshuam rau kev xa tawm thiab cov khoom tawm.
3. Cov Txheej Txheem Pabcuam thiab Cov Txheej Txheem Ua Haujlwm
Feeding System: Feeder malfunctions, blockages, los yog mismatches nrog lub ntsiab lub tshuab kev sib hloov ceev yog feem ntau ua rau cov zis fluctuations.
Downstream Equipment Resistance: Kev tawm tsam los ntawm cov khoom siv qis qis xws li lub taub hau tuag thiab cov lim dej ncaj qha cuam tshuam rau cov khoom siv extrusion. Cov kab mob ua kom tsis muaj zog thiab txo cov zis. Lub inlet siab teeb tsa ntawm lub iav twj tso kua mis kuj tseem ceeb heev.
Kev Tswj Kev Kub Kub: Yog tias qhov ntsuas kub qis dhau, cov khoom siv yuav tsis ua kom tag nrho plastified thiab yuav muaj cov dej ntws tsis zoo, ua rau muaj teeb meem extrusion; Yog hais tias qhov kub thiab txias heev, cov khoom yuav decompose, uas zoo sib xws rau cov zis thiab stability.
Cooling System: Tsis txaus cua txias ntawm qhov chaw nres nkoj pub tuaj yeem ua rau ntxov melting thiab lo ntawm cov khoom, cuam tshuam cov khoom noj. Kev tsim kom txias txias tuaj yeem txhim kho cov khoom siv qub.
Internal Screw Cooling: Cov cua txias sab hauv pab txhim kho kev sib xyaw, tab sis kuj yuav txo qis cov zis me ntsis, yuav tsum tau them nyiaj los ntawm kev sib hloov ceev.
Lub cev muaj zog thiab Tsav Tsheb: Lub cev muaj zog yog qhov tseem ceeb, tab sis kev ruaj ntseg thiab kev tswj hwm ntawm cov tsav tsheb tseem ceeb dua.
4. Cov xwm txheej ua haujlwm thiab cov khoom siv
Cov Khoom Siv Khoom: Cov khoom sib txawv (xws li PP, PE, thiab PVC) muaj cov yam ntxwv ua haujlwm sib txawv, uas cuam tshuam ncaj qha rau lub extruder qhov tseeb tso tawm. Txawm tias muaj tib lub formulation, hloov mus rau lwm cov khoom raw khoom yuav ua rau cov txheej txheem variations.
Khoom Siv Purity: impurities los yog tsis yog - cov khoom txawv teb chaws meltable nyob rau hauv cov khoom tuaj yeem txhaws qhov tuag los yog jam tus ntsia hlau, ua rau poob qis hauv cov zis lossis txawm tias kaw.