1. Lub boiler raj yog dab tsi?
Boiler rajxa mus rau cov ntaub ntawv hlau uas qhib rau ntawm ob qho kawg, muaj qhov khoob khoob, thiab ntev dua li lawv nyob ib puag ncig. Raws li txoj kev tsim khoom, nws tuaj yeem muab faib ua seamless steel yeeb nkab thiab welded steel yeeb nkab. Phab ntsa thickness implies ntau qhov ntau thiab tsawg, los ntawm me me txoj kab uas hla capillary raj mus rau txoj kab uas hla loj ntawm ob peb meters hauv txoj kab uas hla. Cov kav hlau hlau tuaj yeem siv rau hauv cov kav dej, cov khoom siv thermal, kev lag luam machinery, roj av geological tshawb nrhiav, ntim, tshuaj lom neeg kev lag luam thiab cov hom phiaj tshwj xeeb.
2. Kev faib tawm
Boiler raj tau muab faib ua cov raj dej dav dav thiab cov raj kub siab boiler raws li lawv qhov kev ua haujlwm kub, thiab tuaj yeem muab faib ua ntau yam steel raj raws li lawv cov kev xav tau sib txawv.
3. Cov txheej txheem ntau lawm ntawm boiler raj
Boiler raj yog ib hom seamless raj. Txoj kev tsim khoom yog tib yam li seamless steel kav. Raws li kev siv qhov kub thiab txias, nws tuaj yeem muab faib ua cov raj dej dav dav thiab cov raj kub siab boiler.
① Qhov kub ntawm cov raj boiler feem ntau qis dua 350 degree. Cov kav dej hauv tsev feem ntau siv No. 10 thiab No. 20 carbon steel kub dov kav lossis cov kav dej txias.
② High-pressure boiler raj feem ntau raug rau qhov kub thiab txias siab thaum siv. Cov kav dej yuav oxidize thiab corrode nyob rau hauv qhov kev txiav txim ntawm high-temperature flue gas thiab dej vapor. Cov yeeb nkab steel yuav tsum muaj lub zog ntev, siab oxidation tsis kam, corrosion kuj thiab zoo structural stability.
4. Lub hom phiaj ntawm boiler raj
① General boiler raj yog tsuas yog siv los ua cov phab ntsa dej, cov raj dej kub, cov raj dej kub, cov raj kub kub, cov raj kub kub rau cov kav dej kub, cov raj loj thiab cov pa luam yeeb thiab cov raj cib.
② High-pressure boiler raj yog tsuas yog siv los tsim cov raj superheater, reheater raj, cua qhia cov raj, cov kav dej loj, thiab lwm yam.
5. Siv tus lej hlau
(1) Cov qib zoo carbon steel qauv yog 20G, 20MnG, thiab 25MnG.
(2) Alloy structural steel qib 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, thiab lwm yam.
