Nruab nrab thiab tsis tshua muaj siab steel yeeb nkab ua nyob rau hauv Suav teb
(1) Gb3087-82 seamless steel raj rau qis thiab nruab nrab siab boilers. Tensile test yuav tsum ua raws li GB / t228-87, hydrostatic test nrog GB / t241-90, flattening test nrog GB / t246-97, flaring test nrog GB / t242-97 thiab txias bending test nrog gb244-97.
(2) Gb5310-95 seamless steel raj rau kev kub siab boilers. Tensile test, hydraulic test thiab flattening test yog tib yam li cov teev hauv gb3087-82; Impact test raws li gb229-94, flaring test raws li GB / t242-97 thiab grain loj xeem raws li Yb / t5148-93; Kev tshuaj xyuas microstructure yuav tsum ua raws li gb13298-91, decarburized txheej tshuaj xyuas yuav tsum ua raws li gb224-87, thiab kev tshuaj xyuas ultrasonic yuav tsum ua raws li GB / t5777-96.
(3) Kev tshuaj xyuas lub cev thiab kev ntsuas ntawm cov raj xa dej boiler yuav tsum tau ua raws li cov qauv tsim nyog tau teev tseg hauv daim ntawv cog lus (1) Lub teb chaws tseem ceeb ntawm cov raj boiler yog Nyiv thiab lub teb chaws Yelemees. Cov lus qhia tshwj xeeb ntawm cov khoom siv feem ntau yog 15914.2mm; 2734.0 hli; 219.110.0 hli; 41975mm; 406.460mm, thiab lwm yam. Yam tsawg kawg nkaus specification yog 31.84.5mm, thiab qhov ntev yog feem ntau 5 ~ 8m.
(2) Nyob rau hauv cov ntaub ntawv thov ntshuam, ST45 seamless boiler raj xa los ntawm Mannesmann steel yeeb nkab cog hauv lub teb chaws Yelemees tau pom tias muaj qhov tsis xws luag sab hauv tshaj cov kev cai ntawm cov nroj tsuag thiab cov qauv ntawm German hlau thiab hlau Association.
(3) Alloy steel kav xa los ntawm lub teb chaws Yelemees feem ntau yog 34CrMo4 thiab 12CrMoV. Cov yeeb nkab steel no muaj qhov ua tau zoo ntawm qhov kub thiab txias thiab feem ntau yog siv los ua cov yeeb nkab steel rau qhov kub kub boiler.
(4) Muaj ntau ntau cov yeeb nkab hlau xa tawm los ntawm Nyiv, nrog cov lus qhia ntawm 426.012mm 5 ~ 8m; 152.48.0 hli 12m; 89.110.0mm6m; 101.610.0mm12m; 114.38.0 hli 6m; 127.08.0mm9m, thiab lwm yam. Ua raws li cov qauv kev lag luam Japanese jisg3458, thiab qib steel yog stpa25. Cov yeeb nkab steel no feem ntau siv los txhawb cov yeeb nkab superalloy. Siab siab seamless steel yeeb nkab yog ib hom seamless yeeb nkab. Txoj kev tsim khoom yog tib yam li cov yeeb nkab seamless, tab sis muaj cov kev cai nruj rau cov qib steel siv hauv kev tsim cov yeeb nkab steel. Raws li qhov kev pabcuam kub, nws tau muab faib ua cov raj boiler dav dav thiab siab-siab boiler raj.
① Qhov kev pabcuam kub ntawm high-pressure seamless steel yeeb nkab yog qis dua 450 ℃, thiab cov yeeb nkab hauv tsev yog tsim los ntawm No. 10 thiab No. 20 carbon steel kub dov yeeb nkab lossis cov yeeb nkab txias.
② Kev kub siab seamless steel yeeb nkab yog feem ntau nyob rau hauv qhov kub thiab txias txias. Cov yeeb nkab yuav raug oxidized thiab corroded nyob rau hauv qhov kev txiav txim ntawm kub flue roj thiab chav. Cov yeeb nkab steel yuav tsum muaj lub zog ntev, siab tiv thaiv oxidation thiab corrosion kev ua tau zoo thiab kev ruaj ntseg zoo.
