Kauv steel kav yog siv los ua cov kav dej thiab cov kav dej. Yog tias cov yeeb nkab steel siv rau cov dej ntws, feem ntau nws yuav raug kho los tiv thaiv corrosion ntawm sab hauv lossis sab nrauv. Cov kev kho los tiv thaiv corrosion xws li 3pe anti-corrosion, epoxy coal tar anti-corrosion, thiab epoxy hmoov anti-corrosion. Tos, vim tias cov txheej txheem epoxy hmoov dipping yog teeb meem los ntawm cov teeb meem adhesion, epoxy hmoov dipping txheej txheem yeej tsis tau nce. Tam sim no, nrog txoj kev vam meej ntawm cov tshuaj phosphating tshwj xeeb rau epoxy hmoov dipping, qhov teeb meem adhesion ntawm epoxy hmoov dipping txheej txheem tau kov yeej thawj zaug, thiab cov txheej txheem ntawm epoxy hmoov dipping tau pib tshwm.

Kev txheeb xyuas qhov ua rau tsis sib xws los tiv thaiv corrosion txheej thickness ntawm kauv hlau kav, qhov tsis sib xws ntawm 3PE kauv steel yeeb nkab txheej yog feem ntau cuam tshuam rau qhov tsis sib xws ntawm cov ntsiab lus ntsuas ntawm txhua sab faib rau hauv cov kev taw qhia ncig. Kev lag luam tus qauv SY/T0413-2002 tsis muaj kev cai rau thickness uniformity. Nws teev cov thickness tus nqi ntawm lub txheej tab sis yuav tsum tau hais tias lub thickness ntawm cov txheej txheem yuav tsum tsis txhob yuav qis dua lub thickness tus nqi ntawm ib tug taw tes, es tsis yog tus nqi nruab nrab ntawm ntau yam kev xeem cov ntsiab lus.

Yog hais tias lub thickness ntawm txheej yog tsis sib npaug thaum lub sij hawm txheej txheej txheem ntawm kauv steel kav, txheej txheej yuav inevitably yuav nkim. Qhov no yog vim hais tias thaum lub thickness ntawm txheej ntawm lub thinnest ib feem mus txog qhov specification, lub thickness ntawm lub thickness yuav ntau dua li cov txheej specification thickness. Tsis tas li ntawd, txheej txheej tsis sib xws tuaj yeem yooj yim ua rau cov txheej tuab ntawm qhov thinnest ntawm cov yeeb nkab steel tsis ua raws li cov lus qhia tshwj xeeb. Cov laj thawj tseem ceeb rau qhov tsis sib xws thaum lub sijhawm tsim khoom yog cov khoom siv tsis sib xws thiab khoov ntawm cov yeeb nkab steel. Ib txoj hauv kev zoo los tswj cov txheej txheem tsis sib xws ntawm 3PE cov kav dej los tiv thaiv corrosion yog los kho ntau qhov extrusion tuag kom ua rau cov txheej txheem tiv thaiv corrosion nyob rau ntau qhov chaw sib xws li ua tau thiab tiv thaiv cov kav hlau tsis tsim nyog los ntawm kev co hauv online.

Wrinkles nyob rau saum npoo ntawm txheej: Extrusion thiab winding ntawm cov khoom siv polyethylene mus rau cov yeeb nkab steel yuav tsum tau siv cov menyuam silicone. Kev hloov kho tsis raug thaum lub sijhawm txheej txheem no yuav ua rau muaj wrinkles ntawm cov txheej txheej. Tsis tas li ntawd, qhov tawg ntawm cov yeeb yaj kiab yaj thaum cov khoom siv polyethylene tawm ntawm qhov kev tawm mus tuag thaum lub sij hawm extrusion txheej txheem kuj yuav tsim qhov tsis zoo xws li wrinkles. Cov txheej txheem tswj kev sib raug zoo rau qhov ua rau ntawm wrinkles muaj xws li kho lub hardness thiab siab ntawm cov roj hmab cov menyuam thiab lub siab cov menyuam. Los ntawm qhov kev xav no, tsim nyog nce tus nqi extrusion ntawm polyethylene los tswj cov zaj duab xis melting rupture.