Keeb kwm: Vim li cas Boilers xav tau tus qauv Dedicated
Boiler tubes ua haujlwm ntawm kev kub siab, kub kub, thiab kev sib cuag nrog cov pa thiab combustion gas. Lawv yuav tsum tiv thaiv creep, oxidation, thiab thermal qaug zog rau lub neej tsim ntawm 100,000 teev lossis ntau dua, thiab lub raj tsis ua haujlwm tuaj yeem kaw lub tshuab hluav taws xob lossis ua rau raug mob. Vim tias qhov kev nyab xeeb no- lub luag haujlwm tseem ceeb, txhua lub tebchaws muaj kev lag luam muaj tus qauv tshwj xeeb rau boiler raj. Nyob rau hauv Suav teb, GB 5310 tswj seamless steel raj rau siab -siab boilers, npog cov chemistry, kho cua sov, mechanical zog, thiab kev ntsuam xyuas ntawm tag nrho cov qib ntawm carbon steel mus chromium-molybdenum thiab chromium-molybdenum-vanadium steels.
Cov Qib Siab thiab Lawv Cov Haujlwm Pabcuam
| Qib | Hom | Hom Kev Pabcuam |
|---|---|---|
| 20G | Cov pa roj carbon steel | Economizer, phab ntsa dej, qis-kub superheater |
| 15 CrMoG | 1Cr-0.5Mo | Superheater thiab reheater ntawm nruab nrab kub |
| 12Cr1MoVG | Cr-Mo-V | High -kub superheater thiab cov kav dej loj |
| 12Cr2MoG | 2.25Cr-1Mo | Thick - phab ntsa headers thiab chav piping |
Lub ntsiab lus G qhia tias qib yog npaj rau boiler thiab kev pabcuam siab, qhov txawv ntawm cov qauv ntawm cov qauv zoo sib xws.
Chemical Composition Highlights
Qib 20G yog carbon steel nrog txog 0.17 txog 0.24 feem pua carbon thiab 0.35 txog 0.65 feem pua manganese. Qib 15CrMoG ntxiv 0.80 rau 1.10 feem pua chromium thiab 0.40 txog 0.55 feem pua molybdenum rau creep zog siab tshaj 450 degrees Celsius. Qib 12Cr1MoVG ntxiv vanadium rau grain refinement thiab siab dua creep kuj, thiab yog ib qho ntawm cov khoom siv dav siv hauv Suav hluav taws xob boilers rau chav kub txog li 540 degrees Celsius. Txhua qib tau txhais cov kev txwv ntawm phosphorus thiab sulfur, thiab qhov kev xa khoom tau teev tseg raws li qhov qub, normalized-thiab-tempered, los yog quenched-thiab-tempered nyob ntawm qib thiab phab ntsa thickness.
Mechanical thiab Test Requirements
GB 5310 yuav tsum muaj kev sim tensile, kev ntsuam xyuas flattening, flaring los yog dabtsi yog khoov kuaj qhov twg muaj feem xyuam, thiab kev ntsuam xyuas hydrostatic los yog nondestructive. Rau qib siab - qhov kub thiab txias, tus qauv txhais cov chav - qhov kub thiab txias tensile minima thiab hardness ranges, thiab tus neeg yuav khoom tuaj yeem thov siab - cov ntaub ntawv kub yield. Qhov zoo ntawm qhov chaw yog tswj tau vim tias lub raj tsis zoo ua rau muaj kev ntxhov siab hauv cov phab ntsa nyias. Txhua lub raj tau cim nrog qib, tus lej xov tooj cua sov, thiab cov chaw tsim khoom, thiab daim ntawv pov thawj zoo nrog rau kev xa khoom.
Daim ntawv thov Scenario
GB 5310 cov raj yog siv rau hauv cov khoom siv hluav taws xob hluav taws xob boilers, cov boilers muaj, pov tseg- rau- cov nroj tsuag hluav taws xob, thiab cov cua sov ua ke thiab lub zog hluav taws xob . 20G ua haujlwm qis- qhov kub thiab txias, thaum 15CrMoG thiab 12Cr1MoVG nqa lub superheater thiab reheater lub luag haujlwm. Cov qib qub yog siv hauv cov hlab ntsha siab, cov khoom siv hluav taws xob, thiab cov kav dej hauv qhov chaw uas tus qauv tsim tau txais cov ntaub ntawv cov ntaub ntawv.
Cov lus nug nquag
Cov qauv siv tau yog nyob ntawm cov khoom thiab kev pabcuam: API 5L rau kab yeeb nkab, ASTM A53 thiab A106 rau carbon steel yeeb nkab, ASTM A312 thiab A213 rau stainless hlau, thiab ASME B16 series rau qhov ntev thiab fittings; qhov kev txiav txim yuav tsum npe tus qauv thiab nws tsab.
Qhov ntau thiab tsawg los ntawm qhov me me mus rau txoj kab uas hla loj ntawm cov khoom lag luam, nrog cov phab ntsa tuab qhia nyob rau hauv cov sij hawm los ntawm SCH10 txog XXS lossis hauv millimeters; qhov kev txiav txim hais txog cov kab sab nraud, phab ntsa thickness thiab ntev.
Cov qib carbon steel xws li API 5L B txog X70 thiab ASTM A106 B, alloy steels, thiab stainless qib xws li 304/304L, 316/316L thiab duplex muaj, txhua tus xa nrog cov ntawv pov thawj chemistry thiab cov khoom siv tshuab.
Txhua qhov ntau yog kuaj rau cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov ntev thiab siab ncaj ncees, nrog rau kev sim hydrostatic thiab tsis yog -kev kuaj xyuas kev puas tsuaj raws li tus qauv, thiab daim ntawv pov thawj ua pov thawj cov txiaj ntsig.
Dub pleev xim rau, varnished, oiled, galvanized los yog coated nto yog muaj, nrog dawb, beveled los yog threaded xaus; yas caps thiab steel kawg tiv thaiv cov yeeb nkab thaum thauj.
Khaws cov skids tawm hauv av nrog qhov kawg tiv thaiv, kom nws qhuav thiab deb ntawm cov hlau tsis sib xws, thiab nqa cov pob khoom nrog cov hlua khi ntawm cov ntsiab lus nqa nqa kom tsis txhob muaj kev puas tsuaj.
