Txhawm rau txhim kho corrosion kuj ntawm chip pob valve los ntawm kev kho cua sov
Cov txheej txheem los txhim kho corrosion kuj ntawm lub pob valve yog txhawm rau txhim kho qhov tsim nyog ntawm cov khoom ruaj khov Ti, Nb, Mo, thiab lwm yam, txhawm rau txhim kho corrosion kuj thiab weldability. Lub weldability yog zoo dua li ntawm chromium stainless hlau flange. Thaum lub pob pob valve siv tib hom chromium stainless hlau flange electrode (G302, G307), nws yuav tsum tau preheated saum 200 degree thiab tempered ntawm txog 800 degree tom qab vuam.
To improve corrosion resistance of chip ball valve by welding
Yog tias kev kho cua sov tsis tuaj yeem ua tau, stainless hlau flange yeeb nkab vuam rods (A107, A207) yuav tsum tau siv. Lub vuam pas nrig ntawm lub pob valve yuav tsum tau ceev kom qhuav thaum siv. Cov calcium-titanium hom yuav tsum tau qhuav ntawm 150 degree rau 1 teev, thiab qis- hom hydrogen yuav tsum tau qhuav ntawm 200-250 degree rau 1 teev. , Txhawm rau tiv thaiv cov txheej txheem electrode los ntawm lo rau cov roj thiab lwm yam av, thiaj li tsis ua kom cov pa roj carbon ntau ntawm cov vuam thiab cuam tshuam rau qhov zoo ntawm cov vuam.
