Cov ntsiab lus ntawm lub luj tshib

1. Cov electrode yuav tsum tau muab cia kom qhuav thaum siv. Hom titanium calcium yuav tsum tau qhuav ntawm 150 degree rau 1 teev, thiab hom hydrogen tsawg yuav tsum tau qhuav ntawm 200-250 degree rau 1 teev (tsis txhob rov ua kom qhuav ntau zaus, txwv tsis pub cov txheej yuav yooj yim tawg thiab tev tawm) txhawm rau tiv thaiv cov electrode Cov txheej nplaum nplaum rau cov roj thiab lwm yam av, kom tsis txhob ua kom cov pa roj carbon ntau ntawm cov vuam thiab cuam tshuam rau qhov zoo ntawm cov vuam. Thaum lub luj tshib yog welded, nws yog dua rhuab rau precipitate carbides, uas txo cov corrosion kuj thiab mechanical zog. Tom qab vuam, lub hardenability yog loj, thiab cov kab nrib pleb yog nquag tshwm sim. Yog tias tib hom electrode siv rau vuam, nws yuav tsum tau preheated saum 300 degree thiab maj mam txias ntawm li 700 degree tom qab vuam. Yog tias qhov vuam tsis tuaj yeem raug kho tom qab vuam, yuav tsum siv chrome-nickel stainless hlau electrode.

2. Txhawm rau txhim kho corrosion kuj thiab weldability ntawm stainless hlau luj tshib, tsim nyog tus nqi ntawm cov khoom ruaj khov xws li Ti, Nb, Mo, thiab lwm yam yog tsim nyog ntxiv, thiab weldability zoo dua. Thaum siv tib hom chromium stainless hlau electrode, nws yuav tsum tau preheated saum 200 degree Thiab tempering kho ntawm txog 800 degree tom qab vuam. Yog tias qhov vuam tsis tuaj yeem kho cua sov, yuav tsum siv chrome-nickel stainless hlau electrode.