Lub sijhawm dhau los, peb tau tham txog qhov hnav tsis kam thiab tawv ntawm cov khoom siv hauv PET preform pwm xaiv. Tom ntej no, peb yuav tham txog lwm yam.
High -kub tsis kam ntawm cov ntaub ntawv kuj yog ib qho kev sib tw zais. Thaum PET preform pwm ua haujlwm tas li, qhov kub ntawm qhov kab noj hniav / tub ntxhais tuaj yeem ncav cuag 180-230℃. Feem ntau, lub hardness ntawm cov ntaub ntawv maj mam txo nyob rau hauv zoo xws li kev khiav hauj lwm tej yam kev mob, ua rau lawv ntau nquag hnav thiab txawm me ntsis deformation. Yog li, cov khoom siv yuav tsum muaj peev xwm nyob ruaj khov ntawm qhov kub thiab txias, uas feem ntau hu ua "tempering resistance." Rau qhov chaw nyob rau hauv qhov kub khiav, xws li kub nozzles, ib puag ncig yog txawm hnyav, yuav tsum tau siab - kub resistant alloys xws li Be-bronze. Cov neeg uas ua rau PET preforms paub tias cov khoom no yog rhiab heev rau cov cua sov, yog li cov pwm kuj yuav tsum muaj zoo thermal qaug zog tiv thaiv kom tsis txhob muaj cov kab nrib pleb tshwm sim tom qab lub sij hawm raug kub thiab txias.
Ob qho lwm yam uas feem ntau hais ua ke yog kev tiv thaiv corrosion thiab thermal conductivity. Vim muaj ntau lub raj mis rau cov dej haus, cov khoom pwm yuav tsum huv si thiab tiv taus xeb thiab kab mob loj hlob. Yog li ntawd, stainless hlau zoo li S136 thiab AISI 422 muaj nyob rau hauv cov zaub mov- qib pwm; Txawm tias kim dua, lawv muaj kev thaj yeeb ntawm lub siab. Kev siv hluav taws xob ncaj qha cuam tshuam rau kev ua kom txias, thiab txhua tus xav tau lub voj voog luv luv. Yog li, muab lwm cov kev xav tau ua tau raws li, qhov zoo thermal conductivity yog qhov ntxiv.
Hauv lub raj mis PET preform pwm ua, cov neeg ua haujlwm paub txog feem ntau "xaiv cov ntaub ntawv raws li qhov chaw." Core molding thaj chaw feem ntau siv daim iav- tiav stainless hlau, polished kom ci siab; qhov tseeb threaded qhov chaw ntawm lub raj mis caj dab feem ntau siv tshwj xeeb nitrided steel, nrog ib tug nto yog li ntawd nyuaj nws xav tias ntxhib rau kov; loj pwm phaj yog ua los ntawm pre-hardened steel rau stability thiab tiv thaiv deformation. Qhov kev sib xyaw ua ke no ua kom muaj kev ua tau zoo ntawm cov khoom tseem ceeb thaum tswj cov nqi tag nrho.
Cov ntaub ntawv siv tshuab tau tsim kho sai heev. Cov ntaub ntawv tshiab xws li hmoov metallurgy, siab - steel ceev, thiab cermets tau pib tshwm nyob rau hauv qee qhov siab - pwm yuav tsum tau ua, thiab tej zaum yuav ua rau muaj kev hloov pauv ntau dua yav tom ntej. Thaum kawg, tsis muaj ib qho kev daws teeb meem rau kev xaiv cov khoom; tsuas muaj cov lus teb uas zoo tshaj plaws raws li qhov xav tau tiag tiag thiab ua tiav qhov sib npaug tshaj plaws.
Yog tias koj xav paub ntau ntxiv txog PET preform pwm, thov nyem qhov txuas:https://www.y-petblowing.com/info/how-to-xaiv-th e-cov ntaub ntawv-rau-tus- tsiaj{10}}preform-103252706.html