Cov yeeb nkab boiler yog ib hom yeeb nkab seamless. Txoj kev tsim khoom zoo ib yam li cov yeeb nkab seamless, tab sis muaj cov kev cai nruj heev rau hom hlau siv los tsim cov yeeb nkab steel. Raws li kev siv kub, muab faib ua ob hom: cov yeeb nkab boiler dav dav thiab cov yeeb nkab boiler siab.

Cov khoom siv kho tshuab ntawm lub raj boiler yog ib qho tseem ceeb uas yuav tsum tau ua kom cov hlau ua haujlwm tau zoo. Nws nyob ntawm cov tshuaj lom neeg ntawm cov hlau thiab lub tshuab kho cua sov. Hauv cov qauv yeeb nkab hlau, raws li kev siv sib txawv, cov khoom tensile (tensile strength, yield strength lossis yield point, elongation) thiab hardness, toughness indicators, thiab cov neeg siv xav tau kev ua haujlwm kub thiab siab.

① Lub raj boiler kub feem ntau yog qis dua 350 ℃, cov yeeb nkab hauv tsev feem ntau yog ua los ntawm No. 10, no. 20 carbon steel kub dov yeeb nkab lossis cov yeeb nkab kos txias.

Lub raj xa dej

Lub raj xa dej

(2) Cov raj xa dej kub siab feem ntau siv rau hauv qhov kub thiab txias. Nyob rau hauv qhov kub thiab txias ntawm cov pa roj flue thiab cov dej ua pa, oxidation thiab corrosion yuav tshwm sim. Cov yeeb nkab hlau yuav tsum muaj lub zog ruaj khov, oxidation corrosion tsis kam thiab microstructure stability zoo.