Boiler raj yog ib hom seamless raj. Txoj kev tsim khoom yog tib yam li seamless yeeb nkab, tab sis muaj cov kev cai nruj ntawm cov hlau siv los tsim cov yeeb nkab steel. Raws li kev siv ntawm qhov kub thiab txias tau muab faib ua ob hom dav dav boiler raj thiab siab-siab boiler raj.

Cov cuab yeej cuab tam ntawm boiler raj yog qhov ntsuas tseem ceeb los xyuas kom meej qhov kev pabcuam kawg ntawm cov hlau. Nws nyob ntawm cov tshuaj muaj pes tsawg leeg ntawm cov hlau thiab kev kho cua sov. Nyob rau hauv cov txheej txheem steel yeeb nkab, raws li kev siv sib txawv, tau teev tseg cov khoom tensile (lub zog tensile, lub zog tawm los yog qhov taw tes tawm, elongation) thiab hardness, toughness indicators, as well as user requirements of high and low temperature performance.

① Qhov dav dav boiler raj kub yog qis dua 350 ℃, cov yeeb nkab hauv tsev yog tsim los ntawm No. 10, tsis yog. 20 carbon steel kub dov yeeb nkab los yog txias drawn yeeb nkab.

Boiler raj

Boiler raj

(2) High-pressure boiler raj feem ntau siv nyob rau hauv qhov kub thiab txias thiab kub siab tej yam kev mob. Nyob rau hauv qhov kev txiav txim ntawm kub flue roj thiab dej vapor, oxidation thiab corrosion yuav tshwm sim. Cov yeeb nkab steel yuav tsum muaj lub zog ruaj khov, siab oxidation corrosion kuj thiab zoo microstructure stability.