Qhov teeb meem ntawm cov dej xau hauv cov kav dej tsis tshua muaj vim qhov zoo ntawm cov kav dej lawv tus kheej, thiab feem ntau yog cov teeb meem vuam. Nov yog cov ntsiab lus ntawm qee yam uas cuam tshuam rau qhov zoo ntawm cov kav dej welding.
1. Cov cua kub thiab lub sijhawm
Qhov ntsuas kub yuav tsum tswj tau ntawm 260-270 degree . Thaum qhov kub thiab txias qis dhau lawm, cov cua kub fusion ntawm PPR yeeb nkab tsis nyob rau hauv qhov chaw, thiab cov yeeb nkab thiab fittings tsis tuaj yeem welded zoo. Thaum qhov kub thiab txias dhau lawm, nws yog ib qho yooj yim ua rau txhaws los yog cuam tshuam rau qhov ntws ntawm qhov sib koom ntawm cov yeeb nkab. Thiab PPR yuav dhau los ua nyias thiab mos thiab nyob twj ywm rau ntawm qhov tuag, thiab carbonization yuav tshwm sim nyob rau hauv lub sij hawm ntev kub, uas yuav cuam tshuam rau kev pab cuam lub neej ntawm cov tuag.
2. Vuam qhov tob
Qhov sib sib zog nqus qhov tob yog cuam tshuam rau sab nraud ntawm PPR yeeb nkab. Rau ib lub yeeb nkab nrog ib txoj kab uas hla ntawm 20 hli, qhov tsawg kawg nkaus vuam qhov tob yog 14 hli, thiab rau cov yeeb nkab nrog ib txoj kab uas hla ntawm 25 hli, qhov tsawg kawg nkaus vuam qhov tob yog 15 hli. Thaum qhov vuam qhov tob tob dhau lawm, qhov chaw vuam tsis txaus, thiab cov yeeb nkab dej tsis ruaj khov. Thaum lub vuam qhov tob tob dhau lawm, qhov ntau dhau yuav raug nyem rau hauv cov yeeb nkab fittings, txo lub puab txoj kab uas hla ntawm cov yeeb nkab dej ntawm qhov nyem, ua rau txo cov dej ntws ntawm cov yeeb nkab dej, thiab tseem ua rau vuam. thaiv.
3. Seb qhov chaw nres nkoj ntawm cov kav dej puas tawg
Vim tias qhov kub tsis tshua muaj siab ntawm PPR, tshwj xeeb tshaj yog nyob rau lub caij ntuj no, qhov chaw tsim kho ib puag ncig feem ntau nyuaj. Yog tias tsis muaj kev saib xyuas rau kev tiv thaiv, PPR yeeb nkab yuav tsis raug puas tsuaj. Ua ntej vuam cov kav dej, nws yog ib qho tsim nyog rau cov kav dej los xyuas seb cov kav dej puas puas lawm, thiab tsis txhob siv cov kav dej nrog cov chaw nres nkoj tawg los txuas nrog cov fittings, ua rau cov dej ntws tawm. Tsis tas li ntawd, xyuam xim rau kev tu cov welded ib feem ntawm cov yeeb nkab, thiaj li tsis ua rau lub vuam tsis muaj zog.
Feem ntau, cov kav dej welding yuav tsum tau them sai sai rau:
1. Xaiv cov kav dej zoo uas yooj yim dua rau vuam.
2. Xaiv cov khoom siv vuam nrog kev tswj qhov kub thiab txias kom ntseeg tau tias qhov ntsuas kub tau tswj tau ntawm 260-270 degree .
3. Ua kom lub vuam tuag lub taub hau huv si, uas yuav tsum tau ntxuav thiab hloov tsis tu ncua.
4. Ua kom lub vuam qhov tob thiab tsis txhob muaj qhov tob tob lossis tob dhau.
5. Master lub sijhawm vuam, tsis txhob ntev thiab luv heev.
6. Ua ntej vuam, ua tib zoo xyuas seb cov yeeb nkab dej puas puas lawm, thiab ntxuav cov khoom yuav tsum tau welded.
