I. Cov teebmeem loj ntawm kev puas tsuaj rau kev vibrations
Thaum cov khoom siv xws li extruders, nqa -tawm chav nyob, thiab lub tank txias tau ntsib teeb meem xws li looseness, misalignment, los yog hloov pauv hauv dej siab, kev vibrations tuaj yeem tshwm sim. Cov kev vibrations no muaj cov teebmeem hauv qab no rau qhov zoo ntawm PE kav:
Nto Waviness
Periodic undulations daim ntawv ntawm cov phab ntsa sab nrauv ntawm cov yeeb nkab, cuam tshuam rau nws cov tsos thiab qhov tseeb qhov tseeb; Hauv qhov xwm txheej hnyav, qhov no ua rau tsis yog -kev sib haum xeeb.
Tsis sib npaug phab ntsa Thickness
Kev vibration destabilizes yaj ntws thiab ua rau tsis sib xws, ua rau muaj zog phab ntsa thickness sib txawv raws cov yeeb nkab qhov ncig thiab ntev. Cov cheeb tsam uas muaj cov phab ntsa nyias nyias muaj peev xwm txo tau siab heev -cov kabmob muaj peev xwm thiab muaj feem cuam tshuam thaum siv.
Ntau dhau Roundness Deviation (Ovality)
Cov yeeb nkab hla -section ua oval- zoo li tus, uas tsis tsuas yog cuam tshuam rau kev thauj mus los thiab kev cia khoom tom ntej tab sis kuj ua rau kev sib khi tsis zoo ntawm cov yeeb nkab sib txuas, ua rau muaj kev pheej hmoo ntawm kev xau.
Internal Structural Defects (Vibration Marks)
Annular cov cim tuaj yeem tsim rau ntawm phab ntsa sab hauv ntawm cov yeeb nkab. Cov no ua raws li cov ntsiab lus kev ntxhov siab, txo cov yeeb nkab ntev - lub sij hawm tsis kam mus rau static hydraulic siab thiab cuam tshuam.
Cov cuab yeej siv nrawm nrawm
Kev co ntev ntev ua rau kev hnav ntawm cov khoom tseem ceeb xws li cov ntsia hlau, lub thoob, thiab cov bearings, uas nyob rau hauv lem ntxiv degrades cov khoom zoo, tsim ib tug vicious voj voog.
II. Cov txiaj ntsig zoo ntawm cov txheej txheem-Induced Vibration
Nyob rau hauv ib co advanced extrusion technologies, tswj kev vibrations ntawm tej zaus thiab amplitudes yog txhob txwm siv rau lub yaj (xws li, mem tes extrusion). Txoj hauv kev no tuaj yeem txhim kho microstructure thiab mechanical zog ntawm PE kav, nrog rau cov txiaj ntsig tseem ceeb hauv qab no:
Nce lub zog hoop thiab tawg siab ntawm cov kav dej
Txhim kho molecular orientation, txhim khu kev tiv thaiv kom qeeb tawg kev loj hlob
Refining crystallization thiab txhim kho qhov kub thiab txias (nce Vicat softening kub)
Txo extrusion o o thiab txhim kho qhov ntev stability
Hauv kev tsim khoom niaj hnub, kev co feem ntau ua rau muaj kev pheej hmoo zoo, ua rau muaj qhov tsis xws luag hauv PE kav dej xws li rippling, tsis sib luag phab ntsa thickness, thiab ovality. Cov teeb meem no yuav tsum tau txo los ntawm kev kho cov cuab yeej siv thiab kev ua kom zoo dua qub.