Yuav tsim cov rooj kawg siv los tshuab cov kab ntsug polyamide raws li qhov loj thiab me tsha tsha li cas?

Qhov thickness sib xws yog qhov tseemceeb rau cov kab ntsug thermal break polyamide, vim tias qhov sib txawv tuaj yeem lag lub zog thermal insulation thiab ua rau muaj teeb meem nyob rau hauv aluminum window frames. Yog tias koj yog tus neeg tuag cov kab ntsug thermal break uas muaj kev paub txog kev kho tshuaj tshaj li xyoo 2006, peb paub tias lub rooj kawg siv muaj feem ntau hauv kev tshuab tau qhov sib xws. Los ntawm peb kev pab txhua yam, uas muaj cov khoom siv, chaw tshuab thiab kev pab txuj ci, peb pab rau koj nrhiav pom cov lus nug tseemceeb hauv kev tsim rooj kawg thiab tuag cov kab ntsug thermal break zoo.

Cov Ntsiab Lus Kawm Loj ntawm Cov Die Extrusion rau Lub Zog Thaiv Nyob Zoo

Kev Sau Kev Pib Txoj Hlwm Siv

Tus txoj hlua nyob hauv lub die extrusion tsim tiam siab rau kev faus cov pa thiab muaj zog thaiv. Rau kev txhim kho zog thaiv zoo ib yam, lub txoj hlua yuav tsum muaj daim npoo sib xis sib ntxheg. Qhov kev sau no tiv thaiv kev cuam tshwv ntawm qhov chaw uas pa tuaj yeem dhau los, thiab tiv tauj kom meej meej rau txhua qhov chaw ntawm lub die. Peb lub teem sau qhov ntev thiab dav ntawm lub txoj hlua raws li viscosity ntawm polyamide—piv txwv li, rau polyamide muaj roj fiberglass (yuav pom tshuaj nyob rau thermal break strips), lub txoj hlua yuav tsum me meem dav dua kom tiv thaiv kev khaum ntawm fiber. Qhov kev sau meej meej no pab kom pa raug tshuab tshuab, ua rau lub taub hneev muaj zog thaiv zoo ib yam.

Kev Tswj Xyuas Tus Nhiag Sib Txuas Me Me

Polyamide melt yog tshuaj nrog tus nqi hluv, thiab tus nqi hluv tsis zoo yuav ua rau keeb kwm tsis zoo, yuav ua rau ntoo tsis zoo. Lub tshuab extrusion die yuav tsum muaj lub tshuab nqi hluv nrog ntau qhov chaw. Peb feem ntau xaiv die rau 3-4 qhov chaw nqi hluv, txhua qhov muaj tshuab nqi hluv thiab tshuab cooling, thiab tshuab nqi hluv yog ±1°C. Piv txwv li, qhov chaw inlet die (nyob deb dua single screw extruder) yog 235-240°C rau keeb kwm, qhov chaw outlet die yog me me (225-230°C) rau keeb kwm. Qhov no yuav pab rau keeb kwm thiab ntoo.

Die Lip Adjustment siv kev nqi hluv

Qhov chaw ntim ntawm qhov kho tshuab yog qhov thaum kawg ntawm qhov kho tshuab uas tsim cov kab ntim kheat, yog li qhov nceej nqe thiab kev tuaj yeem tswj tau yog tseem ceeb. Qhov kho tshuab ntawm peb siv qhov ntim nrog micrometer tuaj yeem tswj tau, muaj qhov nceej nqe tswj tau ntawm 0.01mm. Nyob hauv kev tsim kho, cov neeg tswj tshuab tuaj yeem txhim kho qhov ntim ntawm qhov kho tshuab raw qhov thickness detection nyob ze - yog tias qhov kab ntim kheat qhov yees av ntawm ib sab yog me me, lawv tuaj yeem slightly nce qhov ntim ntawm qhov kho tshuab. Tom qab ntawd, qhov ntim ntawm qhov kho tshuab tau raug npaj nrog roughness ntawm Ra 0.8μm lossis qaum, los sov kom meej friction ntawm melt thiab qhov ntim ntawm qhov kho tshuab thiab tiv thaiv kev flow tsis zoo los ntawm kev resistance ntawm qhov ntim.

Sib phim qhov kho tshuab nrog raw materials thiab tshuab

Tshawb nrhiav rau Twin Screw Granulated Polyamide

Polyamide granules uas muaj qhij nyob zoo (tsim los los ntawm peb cov extruders ob rov tav) yuav xav tau cov dies sib thooj uas tuaj yeem pab tso peb lub zog. Cov extruders ob rov tav faus cov duab nrog sib npaus rau hauv polyamide, tsim ib qhov kev ua zauv uas pab txhim kho lub zog ntawm cov granules. Lub chaw flow ntawm lub die yuav tsum smooth kom phem kom saub qhov kev ua zauv—cov tog ceev nyob hauv lub chaw flow yuav rau cov duab nrog broke, lag luam lub zog thiab tsim cuab yeej kev hlo li cas. Pe cov dies tau tsim nrog cov tog muab rov (radius ≥5mm) kom paub meej tias lub duab nrog ntawm cov granules tsis hlawv, thaum lub chaw flow sib xws pab tswj kom cov duab nrog muab sau ua siab ntau, txhim kho kev sib xws.

Kev sib raug zoo nrog Single Screw Extruders

Yog tias tsuas yog lub chaw sov roj ntaus thiab tsis muaj ob qhov chaw sov roj ntaus thiaj tuaj yeem tsim cov roj kheb polyamide (cov chaw sov roj ntaus ob yog rau kev ntuav me me xwb), vim li ntawd lub chaw sov roj ntaus yuav tsum sib phim nrog lub chaw sov roj ntaus ib leeg. Lub chaw sov roj ntaus ib leeg muab kev nyab xeeb tab sis tso cai rau kev tshuab ntsuas me me, yog li ntawd lub qhov kho tseem ceeb hauv lub chaw sov roj ntaus raug tsim los ntawm 30-45°—qhib sab no txo qhov tawg tshuab thaum nws ntag hauv lub chaw sov roj ntaus, kom tau raws li kev muab tso tseg tso tseg. Peb cov kev pab ntau yam pab nrog kev xaiv lub chaw sov roj ntaus nrog peb lub chaw sov roj ntaus ib leeg: peb yuav ua kev sim thawj lawm ntawm kev sib phim ntawm lub chaw sov roj ntaus, kho lub parameter ntawm lub chaw sov roj ntaus (xws li lub tsev nres tseg) kom sib phim nrog lub chaw sov roj ntaus, kom tso ntawm kev tshwm sim ntawm kev sib txawv uas tsis sib phim.

Kev Pab Ntau Yooj Yim Rau Kev Sau Lub Chaw Sov Roj Ntaus

Kev Tsim Lub Chaw Sov Roj Ntaus Txwv

Yog tias ib qhov chaw pab neeg siv khoom, peb tsis yog tshuaj muag cov dies ntim taw tes xwb—peb tsim cov dies zoo li ntawv uas txiav txim los ntawm kev sau tseg ntawm cov neeg siv khoom nyob rau hauv thermal break strip. Peb lub teem (nyob rau hauv kev sib pab los ntawm peb lub chaw tsim kho) soj ntsuam cov cuab yeej zoo li ntev (10-30mm tseem ceeb), dav (1.5-3mm) thiab daim duab kab plhaub, tom qab ntawd design cov dies nrog cov kauj ruam tshuab thiab die lips. Piv txwv li, rau cov thermal break strip T-shaped, peb ntxiv ib qhov kauj ruam tshuab ob hauv die kom paub meej tias cov melt poob hauv qhov chaw T-shaped raws li, txhawm rau tsws kom muaj cov ntsiab lus ntawm cov “T” branches.

Ntaub ntawv qhia kev siv thiab saib xyuas rau Die

Kev pab uas peb muab tsis yog sib pauv nrog kev xa rooj. Peb xa cov neeg tsov lej mus rau lub chaw nyob ntawm neeg siv khoom los pab pawg rooj tso pov hav thiab lag luam—kev txiav txim siab yooj yim ntawm rooj thiab tus kheej tus kheej (coaxiality error ≤0.1mm) yog qhov tseem ceeb heev rau kev tsim kho tshaj plaws. Peb kuj muab kev sim lag luam rooj: kev saib xyuas thiab saib xyuas rooj (siv polyamide cleaning agents) kom tshem tsov tej tshuaj tsha, thiab kev saib xyuas rooj lip (siv dial indicators) kom hloov qhov chaw uas tuaj yeem hloov thaum siv ntev. Cov txoj kev no pab kom rooj zoo ib txhis, tsim tshaj plaws tshaj plaws ib txhis.

Kev sim phem xwm nrog kev ua haujlwm ntawm rooj

Thaum muaj kev ntsuam xyuas tias cov die extrusion tuaj zo, peb muaj feem pheem ncaj ncaj ntsuam xyuas thickness. Peb muab kev pab tiv thaiv thickness rau cov neeg siv khoom nrog cov ntawv tiv thaiv thickness uas sib cuag nrog die extrusion—yog tias cov ntawv tiv thaiv pom meej tias muaj kev txawb thiab thickness, nws yuav xa cov lus nug rau kev ntsuam xyuas die lip nyob hauv lub sijhawm. Ntawm no, peb tseem ua kev ntsuam xyuas offline (siv cov ntawv tiv thaiv micrometers los ntsuam xyuas 10 chaw nyob hauv txhua strip) los ntsuam xyuas kev ua haujlwm die, nyob hauv kev ntsuam xyuas tias cov strip tau txhua qhov chaw. Qhov kev ntsuam xyuas tuaj zo no, los ntawm kev tsim die mus ntxiv rau kev ntsuam xyuas, pab cov neeg siv khoom ntxiv rau kev ntsuam xyuas tias tsis muaj kev txawb thiab khoom tuaj zo.

Kev tsim kho qhov chaw tso kom muaj lub taub hau sib npaug rau cov roj polyamide thermal break strip yuav tsum tau suab ntxiv kev txhim kho qhov chaw tso, kev lag luam ntawm raw material thiab kev sib raug zoo ntawm kev lag luam. Txhawm rau ib tug neeg tsim kho thermal break strip uas muaj 17 xyoo nyob ntev thiab muaj kev pab txhua yam, peb sau suab ntxiv kev lag luam twin screw granulation, single screw extruders thiab customized extrusion dies los pab khwv tus neeg siv khwv tau txhua yam kev daws teeb meem. Nrog rau peb pab, cov neeg siv khwv tuaj yeem sau kev paub txog kev tsim kho die thiab tsim kho cov thermal break strip zoo tshaj plaws uas muaj lub taub hau sib npaug.