PVC hose siv suspension polyvinyl chloride ua cov khoom siv tseem ceeb, ntxiv ib qho kev faib ua feem ntawm plasticizers, stabilizers, lubricants thiab lwm yam khoom siv. Tom qab sib tov sib npaug, nws yog granulated thiab ces ua rau hauv cov khoom siv extruder.
PVC hoses tuaj yeem muaj cov yam ntxwv sib txawv vim muaj cov qauv raw khoom sib txawv. Vim qhov sib ntxiv ntawm plasticizer, PVC hose no yog mos heev thiab tuaj yeem khoov ntawm qhov siab, uas txawv ntawm PVC cov kav dej nyuaj.
PVC hoses tsuas yog hloov cov kav dej roj hmab los thauj cov kua ntau yam, thiab tseem tuaj yeem siv los ua cov cables thiab insulating sheathing kav rau cov xov hlau.
Cov txheej txheem ntawm PVC hose ntau lawm kab: proportional ntsuas-sib tov stirring-sib tov thiab granulation-extruder-pwm-shaping txias-traction-winding-kev soj ntsuam- ntim thiab cia.
Formula: Cov khoom siv tseem ceeb yog txoj kev ncua kev kawm PVC SG2, SG3 thiab SG4. Raws li qhov sib txawv, cov kav dej pob tshab, cov kav dej insulated, cov kav dej acid thiab alkali resistant, cov kav dej kub, cov kav dej txias, thiab lwm yam tuaj yeem tsim tau.
Kev xaiv cov khoom siv PVC hose kuj txawv ntawm qhov dav dav PVC tawv yeeb nkab extrusion. Lub extruder feem ntau siv ib lub hau ntswj. Cov qauv ntsia hlau yog qhov sib npaug thiab qhov tob tsis sib npaug. Qhov sib piv ntev-rau-ntev yog nyob rau hauv qhov ntau ntawm 18-25, thiab qhov sib piv yog nruab nrab ntawm 2.5-3.5. nruab nrab. Kev xaiv cov khoom siv granulation nyob rau hauv cov txheej txheem dhau los yuav tsis raug qhia ntawm no. Yog tias leej twg xav tau cov cuab yeej no, thov hu rau peb.
Cov pwm cais lub khob hliav qab yog 60 degrees, qhov sib piv yog 5-10, qhov ntev ntawm qhov ncaj ntawm mandrel yog li ntawm 15 npaug ntawm phab ntsa thickness, lub puab txoj kab uas hla ntawm qhov tuag thiab sab nraud txoj kab uas hla ntawm mandrel yuav tsum yog. 15% loj dua li ntawm txoj kab uas hla sab nraud thiab sab hauv ntawm cov yeeb nkab.
Muaj qee cov ntsiab lus uas yuav tsum tau them sai sai rau thaum sib tov thiab kneading thaum granulation. Kuv yuav tsis qhia lawv ntawm no. Cia peb tham txog qhov kub thiab txias thaum lub sij hawm extrusion molding. Cov khoom noj yog 80-110 degree, seem plasticizing yog 120-145 degree, thiab seem homogenizing 150-170 degree, molding pwm kub 170-190 degree .
