1. Nyob rau hauv cov xwm txheej tsis cuam tshuam rau vuam ntawm lub nozzle, qhov tshwj xeeb ntev ntawm cov hmoov epoxy thaum kawg ntawm cov txheej txheej polyethylene yuav tsum tau nce kom tsim nyog los tiv thaiv 3PE los tiv thaiv corrosion warping los ntawm lub sij hawm ntev stacking.cev steelthiab qhov hnyav hlau corrosion ntawm cov yeeb nkab kawg.

2. Thaum cov kav dej tiv thaiv kab mob tau muab tso rau hauv qhov chaw qhib rau lub sijhawm ntev, lawv yuav tsum tau npog ntawm cov yeeb nkab kawg kom tiv thaiv cov dej nag los ntawm corroding thiab ua rau corrosion loj heev ntawm cov yeeb nkab kawg.

3. Yog tias lub sijhawm siv lub raj xa dej ntev ntev, cov xim weldable anti-xeb tuaj yeem pleev xim rau ntawm cov hlau liab qab ntawm cov yeeb nkab kawg kom tiv thaiv 3PE txheej tiv thaiv corrosion los ntawm warping vim corrosion thaum lub sij hawm cia.

4. nruj me ntsis tswj kev sib tsoo zoo ntawm vuam seam tseg ntawm cov yeeb nkab kawg.Qhov sab nraud ntawm polyethylene zawj ntawm qhov vuam yog tib yam li lwm qhov ntawm cov yeeb nkab lub cev.Khaws cov epoxy hmoov ntev dua 20 hli los tiv thaiv hauv qab ntawm epoxy hmoov ntawm qhov vuam los ntawm kev corroded ua ntej thiab ua rau 3PE anti-corrosion txheej ntawm warp.

Kev ceev faj yuav tsum tau them rau kev sib tsoo ntawm cov yeeb nkab kawg welds:

1) Txij thaum pib ntawm vuam seam sib tsoo mus rau polyethylene chamfer, yuav tsum muaj ib qho tiaj tus ntawm cov txheej polyethylene ntawm 10-20mm uas tsis muaj qhov siab tshaj weld thiab tib yam li cov yeeb nkab lub cev los xyuas kom meej extrusion thiab bonding ntawm polyethylene. zawj ntawm cov yeeb nkab kawg zoo.

2) Lub zog ntawm cov vuam seam tom qab kev sib tsoo yuav tsum tau yaug li sai tau nrog cov yeeb nkab lub cev, thiab yuav tsum tsis muaj qhov cuab yeej cuab tam los tiv thaiv cov epoxy hmoov los ntawm polished thaum sib tsoo lub chamfer ntawm polyethylene txheej.

3) Lub chamfer ntawm undressed sab saum toj ntawm lub weld thiab qhov kev hloov pauv ntawm qhov chaw kho yuav tsum yog tib yam li lub chamfer ntawm polyethylene txheej (≤30°) kom lub zog squeezing ntawm cov menyuam nyem tuaj yeem sib npaug ntawm cov txheej txheem polyethylene Txhawm rau tiv thaiv cov txheej txheem polyethylene los ntawm curling vim tsis zoo adhesion ntawm cov txheej tiv thaiv corrosive ntawm qhov zawj.

5. Cov epoxy hmoov txheej ntawm cov ntu tshwj xeeb tuaj yeem ncua lub ntug warping tshwm sim los ntawm corrosion tsuas yog thaum tiv thaiv tiav.Cov yeeb nkab hauv tsev kawg polyethylene bevel ua yog ua los ntawm steel hlau log sib tsoo, uas yuav ua rau cov epoxy hmoov txheej puas.Lub bevel yuav tsum tau machined hloov, thiab hauv qab txheej ntawm riam-ntug yuav tsum tau txwv los ntawm ib tug ntaus ntawv los tswj lub txiav qhov tob ntawm lub cuab tam, thiaj li tsis mus ua puas epoxy hmoov txheej.