20 G:wb 5310-95 kev lees paub cov qauv hlau (qeb txawv teb chaws: Lub teb chaws Yelemees ST45.8, Nyiv STB42, Tebchaws Meskas SA106B), yog cov feem ntau siv boiler steel yeeb nkab, tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab thiab 20 phaj yog qhov zoo ib yam. Cov hlau muaj qee lub zog ntawm chav tsev kub thiab nruab nrab kub, cov ntsiab lus carbon tsawg, zoo plasticity thiab toughness, nws kub thiab txias sib sau thiab vuam kev ua tau zoo. Nws yog tsuas yog siv nyob rau hauv kev tsim cov kev kub siab thiab siab dua tsis muaj boiler fittings, tsis tshua muaj kub seem superheater, reheater, economizer thiab dej phab ntsa, thiab lwm yam. xws li me me txoj kab uas hla yeeb nkab phab ntsa kub ≤500 ℃ cua sov nto yeeb nkab, thiab dej phab ntsa yeeb nkab, economizer raj, loj txoj kab uas hla cov yeeb nkab phab ntsa kub ≤450 ℃ chav pipeline, sau lub thawv (economizer, dej phab ntsa, tsis kub superheater thiab reheater coupling box), nruab nrab kub ≤450 ℃ pipeline accessories. Vim tias carbon steel yuav tsim graphitization nyob rau hauv lub sij hawm ntev ua hauj lwm siab tshaj 450 ℃, yog li lub sij hawm ntev kev pab cuam siab tshaj plaws kub ntawm cov cua sov saum npoo yeeb nkab yog qhov zoo tshaj plaws txwv rau qis dua 450 ℃. Cov hlau nyob rau hauv qhov kub thiab txias, nws lub zog muaj peev xwm ua tau raws li qhov yuav tsum tau ua ntawm superheater thiab chav kav dej, thiab muaj kev tiv thaiv oxidation zoo, plasticity, toughness, vuam zog thiab lwm yam txias thiab kub ua haujlwm zoo heev, dav siv. Qhov chaw ntawm cov hlau siv nyob rau hauv Iranian rauv (xa mus rau ib lub teeb) yog cov dej inlet yeeb nkab (28 tons), cov dej inlet yeeb nkab (20 tons), lub chav sib txuas yeeb nkab (26 tons), economizer thawv (8. tons), thiab cov dej txo qis (5 tons), thiab cov seem yog siv los ua cov hlau tiaj tus thiab cov khoom siv derrick (kwv yees li 86 tons).

Sa-210c (25MnG): Hlau tooj nyob rau hauvASME SA-210txheem. Nws yog ib txoj kab me me ntawm carbon manganese steel rau boilers thiab superheaters, thiab kub lub zog hlau nrog pearl puab. Xyoo 1995, nws tau hloov mus rau GB5310 thiab muaj npe 25MnG. Nws cov tshuaj muaj pes tsawg leeg yog qhov yooj yim, tshwj tsis yog rau cov ntsiab lus carbon thiab manganese ntau dua, qhov seem yog zoo ib yam li 20G, yog li lub zog tawm los yog li 20% siab dua 20G, thiab cov yas thiab cov tawv tawv zoo ib yam li 20G. Cov txheej txheem ntau lawm ntawm cov hlau yog qhov yooj yim thiab nws qhov kev ua haujlwm txias thiab kub ua haujlwm tau zoo. Siv nws los ntawm 20G, tuaj yeem txo qhov tuab ntawm phab ntsa, txo cov khoom siv, tab sis kuj tuaj yeem txhim kho cov cua sov hloov ntawm lub boiler. Nws siv qhov chaw thiab siv qhov kub thiab txias yog qhov zoo ib yam li 20G, feem ntau yog siv rau kev ua haujlwm kub hauv qab 500 ℃ dej phab ntsa, economizer, kub kub superheater thiab lwm yam khoom.
Sa-106c: Nws yog tus lej hlau hauvASME SA-106txheem. Nws yog carbon-manganese steel raj rau high-temperature loj-inch boilers thiab superheaters. Nws cov tshuaj muaj pes tsawg leeg yog qhov yooj yim, zoo ib yam li 20G carbon steel, tab sis cov ntsiab lus ntawm carbon thiab manganese yog siab dua, yog li nws lub zog tawm los yog li 12% siab dua 20G, thiab cov yas, toughness tsis phem. Cov txheej txheem ntau lawm ntawm cov hlau yog yooj yim thiab nws txias thiab kub ua hauj lwm kev ua tau zoo. Siv nws los ntawm 20G manufacturing collector (economizer, dej txias phab ntsa, tsis tshua muaj kub superheater thiab reheater coupling lub thawv), phab ntsa thickness yuav txo tau li ntawm 10%, uas tsis tau tsuas yog txuag cov nqi khoom, tab sis kuj txo cov vuam workload, thiab txhim kho qhov sib txawv ntawm kev ntxhov siab thaum lub thawv sib txuas pib.
15 Mo3 (15 MOG): Nws yog cov yeeb nkab steel hauv DIN17175 tus qauv. Nws yog ib txoj kab me me carbon molybdenum steel raj rau boiler thiab superheater, thiab pearlescent hom kub lub zog hlau. Xyoo 1995, nws tau hloov mus rau GB5310 thiab hu ua 15MoG. Nws cov tshuaj muaj pes tsawg leeg yog qhov yooj yim, tab sis nws muaj molybdenum, yog li nws muaj lub zog thermal zoo dua li carbon steel thaum tswj cov txheej txheem kev ua tau zoo ib yam li carbon steel. Vim nws qhov kev ua tau zoo, tus nqi pheej yig, tau siv dav hauv ntiaj teb. Txawm li cas los xij, cov hlau muaj kev nyiam rau graphitization tom qab kev ua haujlwm ntev ntawm qhov kub siab, yog li nws qhov kev khiav hauj lwm kub yuav tsum tau tswj qis dua 510 ℃, thiab cov nqi ntawm Al ntxiv hauv smelting yuav tsum txwv kom tswj thiab ncua cov txheej txheem graphitization. Lub raj steel no tsuas yog siv rau qhov kub thiab txias superheater thiab tsis kub reheater. Phab ntsa kub yog qis dua 510 ℃. Nws cov tshuaj muaj pes tsawg leeg C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Lub zog ib txwm muaj σs≥270-285, σb≥450-600 MPa; Yas delta 22 lossis siab dua.