Kev npaj ua ntej vuam

Kev npaj ua ntej vuam yog qhov tseem ceeb raws li cov txheej txheem vuam, uas ncaj qha cuam tshuam rau vuam zoo thiab cov nyhuv ntawm cov khoom tiav.

1. Electrode ziab

Lub hom phiaj ntawm ziab cov electrode ua ntej welding yog tshem tawm cov dej noo hauv cov electrode ntub thiab txo cov hydrogen hauv lub pas dej molten thiab weld los tiv thaiv qhov pores thiab txias tawg.Cov txheej txheem ziab ntawm electrodes nrog cov txheej txheej sib txawv yog txawv, thiab cov txheej txheem ziab yog ua raws li cov txheej txheem teev tseg hauv phau ntawv qhia ntawm electrode.Nws raug pom zoo kom qhuav raws li cov lus qhia pob ntawm Tianqiao vuam electrodes.

2. Kev ntxuav ua ntej vuam

Nws yog hais txog kev tshem tawm cov roj, xeb, xim thiab dej ntawm qhov chaw ntawm qhov sib koom ua ke thiab nws qhov chaw nyob ib puag ncig (li ntawm 50mm) ua ntej vuam.Thaum vuam nrog alkaline electrodes, kev tu kom huv yog nruj thiab meej, txwv tsis pub cov pores thiab ncua kev tawg yog yooj yim tsim.Acid electrodes tsis rhiab heev rau xeb.Yog hais tias xeb kuj yog lub teeb thiab qhov zoo ntawm qhov vuam tsis siab, nws yuav tsis raug tshem tawm.

3. Preheating

Nws hais txog cov txheej txheem ntsuas kom ua kom sov tag nrho lossis ib feem ntawm qhov vuam ua ntej vuam.Nws lub hom phiaj tseem ceeb yog txo qis qhov txias ntawm qhov sib koom ua ke tom qab vuam, tsis txhob tsim cov qauv tawv tawv, thiab txo qhov kev ntxhov siab thiab deformation.Nws yog ib txoj hauv kev zoo los tiv thaiv cov kab nrib pleb.Qhov xav tau rau preheating thiab qib ntawm preheating kub nyob ntawm seb cov khoom ntawm lub hauv paus hlau, cov electrode siv thiab kev txwv ntawm kev sib koom ua ke.

Rau cov qauv dav dav ntawm cov hlau tsis tshua muaj cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj siab muaj zog nrog cov qib qis zog, feem ntau tsis tas yuav tsum preheating.Txawm li cas los xij, rau cov qauv uas muaj kev nruj nruj lossis tsis zoo weldability uas ua rau tawg, yuav tsum tau preheating ua ntej vuam.Cov khoom siv vuam nrog cov thermal conductivity siab, xws li tooj liab, txhuas thiab lawv cov alloys, qee zaum yuav tsum tau preheating, uas tuaj yeem txo qhov vuam tam sim no thiab nce qhov tob tob, thiab tseem pab txhawb kev sib xyaw ntawm cov vuam hlau thiab lub hauv paus hlau.

Nws yuav tsum tau muab sau tseg tias preheat welding tsis yog tsuas yog lub zog noj, tsis tshua muaj productivity, tab sis kuj ua hauj lwm tsis zoo.Vuam yuav tsum tau ua yam tsis muaj preheating lossis qis kub preheating thaum twg los tau.Kev siv cov electrodes uas tsis tshua muaj hydrogen tuaj yeem txo qhov kub ntawm qhov preheating, vim tias nws cov khoom tawg zoo, tab sis cov ntsiab lus ntawm cov electrode yuav tsum tsawg heev.Ntev npaum li nws tau tso cai, cov electrode tuaj yeem xaiv raws li lub hauv paus ntsiab lus ntawm kev sib xyaw ua ke qis, uas yog, lub zog ntawm cov hlau tso tawm qis dua li ntawm cov hlau hauv paus, thiab cov plasticity thiab toughness ntawm cov electrode yog zoo dua li ntawd. ntawm lub hauv paus hlau rau vuam, kom lub preheating kub yuav txo tau los yog tsis preheating yuav siv tau.

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