Kev ua kom cov PVC profiles nkhaus (xws li cov qhov rooj thiab cov qhov rai, cov khoom dai kom zoo nkauj, thiab lwm yam) thaum lub sijhawm tsim khoom, khaws cia, teeb tsa, lossis siv feem ntau yog cuam tshuam nrog kev nthuav dav thiab kev sib zog ntawm thermal, kev tiv thaiv kev nkag, cov zog sab nraud, thiab qhov kub thiab txias thiab av noo hloov pauv. Cov kev ntsuas yuav tsum tau ua thoob plaws hauv tag nrho cov txheej txheem - txij li kev tswj hwm kev tsim khoom, kev khaws cia thiab kev thauj mus los, kev teeb tsa thiab kev tsim kho, mus rau kev saib xyuas niaj hnub - uas tuaj yeem faib ua plaub theem tseem ceeb hauv qab no:
Theem Tsim Khoom: Kev Txhim Kho Cov Txheej Txheem kom Txhim Kho Qhov Profile's Intrinsic Resistance rau Warping
Qhov zoo ntawmCov ntaub ntawv PVCtsim lub hauv paus rau kev tiv thaiv kev warp. Kev hloov kho ntau lawm yuav tsum txhim kho kev ruaj khov ntawm cov qauv los ntawm:
1. Kev txhim kho cov khoom siv raw kom zoo dua qub kom ua rau muaj kev ruaj khov thiab kev tiv taus kev nkag mus
- Rau cov ntaub ntawv tseem ceeb, tswj kom meej qhov sib piv ntawm PVC resin, stabilizers, thiab plasticisers. Tib lub sijhawm suav nrog cov khoom sau thiab cov khoom hloov pauv kom txaus kom ntseeg tau tias qhov profile's flexural modulus ntawm chav tsev kub yog ≥2500MPa.
- Tsis txhob siv cov khoom siv rov ua dua ntau dhau, vim tias qhov tsis huv thiab cov khoom tsis huv ntau ntxiv ua rau cov khoom siv kho tshuab tsis sib xws, ua rau cov ntu ua rau khoov hauv zos.
2. Txhim kho cov txheej txheem extrusion thiab txias kom txo qis kev ntxhov siab sab hauv
- Thaum lub sijhawm extrusion, tswj qhov ceev ntawm lub hau ntswj thiab qhov kub ntawm extrusion kom tiv thaiv kev yaj tsis sib xws los ntawm qhov kub ntau dhau lossis kev nias extrusion ntau dhau los ntawm qhov kub tsis txaus, uas tsim kev ntxhov siab sab hauv ua rau khoov.
- Thaum lub sijhawm txias thiab teeb tsa, siv 'gradient cooling' kom ntseeg tau tias qhov kub sib txawv ntawm sab hauv thiab sab nraud ntawm daim profile tseem nyob ≤5°C. Qhov no tiv thaiv kev txias tsis sib xws ua rau qhov sib txawv ntawm qhov sib txawv, uas yuav ua rau khoov mus rau sab phab ntsa nyias dua. Lub pwm teeb tsa yuav tsum phim qhov seem ntawm daim profile kom tiv thaiv kev hloov pauv thaum lub sijhawm extrusion.
Kev Khaws Cia thiab Kev Thauj Mus Los: Tiv Thaiv Kev Nyuaj Siab Sab Nraud thiab Kev Hloov Pauv Kub / Av noo Ib puag ncig Tam Sim Ntawd
Cov ntaub ntawv PVCyog tias khaws cia lossis thauj tsis raug ntawm lub Hoobkas xa mus thiab teeb tsa, lawv yuav yooj yim khoov ua ntej lub sijhawm vim muaj kev ntxhov siab lossis tej yam ib puag ncig. Cov kev xav tseem ceeb suav nrog:
1. Kev teeb tsa raws li tus qauv: Tsis txhob 'nyob rau hauv qhov chaw siab heev, qhov chaw tsis ncaj, lossis raug tshav ntuj ncaj qha'
- Cov chaw muab khoom sib dhos ua ke yuav tsum tiaj tiaj thiab qhuav; tsis txhob cia khoom rau sab nraum zoov. Yog tias xav tau cia khoom rau sab nraum zoov ib ntus, npog nrog daim ntaub thaiv hnub thiab cov ntaub tarpaulins uas tiv nag kom tiv thaiv cua sov sab hauv.
- Cov profiles yuav tsum tau muab tso rau kab rov tav ua tej txheej; txwv tsis pub muab tso ntsug lossis cov txheej tuab dhau.
- Cais cov profiles uas muaj qhov ntev thiab qhov sib txawv; tsis txhob siv cov profiles uas muaj qhov nqaim ua kev txhawb nqa rau cov uas dav dua.
2. Kev Tiv Thaiv Kev Thauj Mus Los: Txo Kev Co thiab Kev Cuam Tshuam
- Siv cov khib tshwj xeeb los yog cov ntaub qhwv uas muaj npuas los qhwv cov profile kom ruaj khov thaum thauj khoom. Tsis txhob muab lwm yam khoom hnyav sib tshooj hauv lub tsheb uas yuav ua rau cov profile nruj. Xyuas kom muaj cua nkag thaum thauj mus deb; tswj qhov kub ntawm chav tsev kom qis dua 40°C thaum lub caij ntuj sov.
- Siv 'ob-kawg lifting' thaum lub sijhawm thauj khoom/tso tawm. Cov profiles uas ntev tshaj 6m yuav tsum tau siv lub forklift nrog cov khoom siv tshwj xeeb los nqa kom ntseeg tau tias muaj kev faib zog sib npaug.
Kev Teeb Tsa thiab Kev Tsim Kho: Kev Kho Kom Zoo Kom Tshem Tawm Kev Nyuaj Siab ntawm Kev Teeb Tsa
Kev teeb tsa yog qhov tseem ceeb rau kev tiv thaivPVC profile(tshwj xeeb tshaj yog qhov rais/qhov rooj profile) khoov. Tsis txhob ua kom lub cev puas tsuaj los ntawm kev ntxhov siab mus sij hawm ntev uas tshwm sim los ntawm kev teeb tsa tsis sib xws:
1. Kev Tshuaj Xyuas Ua Ntej Kev Teeb Tsa: Xaiv cov profile tsim nyog thiab tso cai rau kev hloov pauv ib puag ncig
- Tshawb xyuas txhua qhov profile ua ntej kev teeb tsa: Xyuas kom meej tias qhov ncaj siv cov kab ncaj nrog qhov sib txawv uas tso cai ≤2mm / m. Tsis lees txais thiab txwv tsis pub siv cov profiles uas dhau qhov kev kam rau siab. Tshawb xyuas cov chaw puas muaj khawb lossis qhov tsis zoo.
- Tom qab xa mus rau qhov chaw teeb tsa, cia cov profiles 'acclimatise rau 24 teev' ua ntej teeb tsa. Qhov no tso cai rau kev hloov pauv rau qhov kub thiab txias thiab av noo, tiv thaiv kev hloov pauv ntawm qhov loj me vim yog thermal nthuav dav / contraction lossis nqus dej noo los ntawm kev hloov pauv sai sai los ntawm txias / qhuav mus rau kub / av noo, uas tuaj yeem ua rau muaj kev ntxhov siab tom qab teeb tsa.
2. Kev Teeb Tsa Txheem: Xyuas kom meej tias 'kev kho kom ruaj ntseg thiab kev faib khoom sib npaug'
- Thaum txhim kho qhov rooj thiab qhov rai profiles, cim cov kab cim rau qhov chaw. Qhov sib nrug ntawm qhov chaw kho yuav tsum ua raws li cov lus qhia. Cov khoom kho yuav tsum sib phim nrog cov tav txhawb nqa ntawm profile, qhov twg phab ntsa tuab dua thiab lub peev xwm thauj khoom tau txhim kho. Kev kho ntawm cov ntu phab ntsa nyias yog txwv tsis pub.
- Rau cov profile ntev, nruab cov kev txhawb nqa nruab nrab ntawm qhov sib nrug ≤1.5m kom tiv thaiv kev sagging vim yog qhov ntev, qhov hnyav ntawm tus kheej lossis cov zog sab nraud.
- Tsis txhob 'yuam kev teeb tsa': Yog tias muaj qhov sib txawv ntau ntawm cov profile thiab phab ntsa / lwm yam khoom, sau nrog polyurethane ua npuas ncauj sealant. Tsis pub ntaus nrog rauj lossis yuam cov profiles.
Kev Siv thiab Kev Txij Nkawm Txhua Hnub: Txo Kev Puas Tsuaj Sab Nraud thiab Kev Poob Qis ntawm Ib puag ncig
Tom qab kev teeb tsa, kev tuav tsis raug thaum siv niaj hnub lossis kev laus ntawm ib puag ncig yuav ua rauCov ntaub ntawv PVCkom ntswj. Nco ntsoov cov hauv qab no:
1. Tsis txhob muaj kev ntxhov siab lossis kev cuam tshuam ntev ntev
- Thaum siv cov qhov rooj thiab qhov rai, tsis txhob khoov rau lawv ntev lossis dai cov khoom hnyav rau ntawm cov profiles. Tiv thaiv cov khoom hnyav uas yuav ua rau muaj kev hloov pauv. Qhib thiab kaw cov qhov rooj/qhov rai maj mam, tsis txhob cuam tshuam rau ntawm cov npoo ntawm tus ncej.
- Cov ntaub ntawv PVC sab nraum zoov yuav tsum tau kuaj xyuas tas li rau cov khib nyiab uas tau sib sau ua ke, uas yuav tsum tau muab tshem tawm sai sai.
2. Kev saib xyuas tsis tu ncua kom ncua kev laus
- Ntxuav cov ntaub ntawv PVC sab nraum zoov txhua 1-2 xyoos, kom qhuav tag tom qab ntawd. Yog tias qhov chaw ploj lossis tawg, siv cov txheej tiv thaiv PVC tshwj xeeb.
- Thaum lub caij ntuj no txias, cov PVC profile yuav tawg yooj yim dua; tsis txhob muab cov khoom sib tsoo hnyav. Thaum lub caij ntuj sov kub, tsis txhob muab dej txias ntxuav cov profile ncaj qha.
Lub hauv paus ntsiab lus tseem ceeb rau kev tiv thaiv PVC profile bending muaj ob qho: txhim kho cov khoom siv tiv thaiv kev khoov, thiab txo cov teebmeem tsis zoo los ntawm cov zog sab nraud thiab cov yam ntxwv ib puag ncig thoob plaws hauv kev khaws cia, kev teeb tsa, thiab kev siv. Qhov no yuav tsum tau ua haujlwm sib koom tes thoob plaws ntau theem: tswj cov txheej txheem tsim khoom thiab cov khoom siv raw ntawm qhov kawg ntawm kev tsim khoom; tiv thaiv kev sib tsoo thiab kev hloov pauv kub / av noo thaum lub sijhawm khaws cia thiab kev thauj mus los; xyuas kom meej tias kev kho kom raug thiab kev faib tawm kev ntxhov siab sib npaug thaum lub sijhawm teeb tsa; thiab txo kev puas tsuaj thiab kev laus thaum siv txhua hnub. Tsuas yog los ntawm txoj hauv kev ntau yam no thiaj li PVC profile bending tuaj yeem zam tau ntau tshaj plaws, yog li ntawd ntev nws lub neej kev pabcuam.
Yog xav tau cov PVC profiles uas ruaj khov dua, thov hu rauinfo@gkbmgroup.com.
Lub sijhawm tshaj tawm: Cuaj hlis-25-2025
