DIN 17175 ST35.8 seamless boiler raj yog carbon steel siab -kub resistant yeeb nkab teev los ntawm German tus qauv DIN 17175. Nws yog siv nyob rau hauv siab - siab boilers (kev khiav hauj lwm siab feem ntau siab tshaj 9.8 MPa, thiab kev khiav hauj lwm kub ntawm 450℃thiab 650℃cua sov tube), reheaters, thiab petrochemical industrial cev.
Tshuaj muaj pes tsawg leeg:
Cov pa roj carbon (C): Txog li 0.17%
Silicon (Si): Txog li 0.35%
Manganese (Mn): Txog li 0.80%
Phosphorus (P)thiabSulfur (S): Txwv rau 0.035% txhua rau kev txhim kho purity
Mechanical Properties:
Tensile zogUa haujlwm siab: 360-480 MPa
Yield zog: Yam tsawg kawg 235 MPa
Elongation: Tsawg kawg 25%
Kev tshuaj xyuas zoo rau DIN 17175 ST35.8 boiler raj feem ntau suav nrog cov hauv qab no:
Chemical Composition Analysis: Xyuas kom meej tias cov ntsiab lus ntawm cov ntsiab lus xws li carbon, manganese, thiab silicon hauv cov khoom ua tau raws li cov qauv, uas yog lub hauv paus rau kev ua kom nws siab -kub tsis kam thiab cov khoom siv kho tshuab.
Mechanical Property Testing: suav nrog cov tsis muaj zog tensile, lub zog tawm los, thiab elongation, uas yuav tsum ua tau raws li cov ntsuas ntsuas kom tiv taus siab -siab thiab siab - qhov kub thiab txias.
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT): Cov txheej txheem xws li kev kuaj ultrasonic lossis radiographic yog siv los kuaj xyuas qhov tsis xws luag xws li cov kab nrib pleb lossis qhov hws hauv lub raj, kom ntseeg tau nws txoj kev ncaj ncees.
Hydrostatic Pressure Test: Ua ib qho kev ntsuas siab ntawm lub raj kom paub tseeb tias nws lub sealing thiab siab -cov kabmob muaj peev xwm nyob rau hauv siab, tiv thaiv kom tsis txhob muaj dej.
Dimensional thiab Visual Inspection: Txheeb xyuas qhov tseeb ntawm lub raj, nrog rau txoj kab uas hla sab nraud, phab ntsa tuab, qhov ncaj, nrog rau qhov tsis xws luag xws li khawb lossis dents.
DIN17175 ST35.8 Boiler Tube Hoobkas
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dub painting los yog kua roj vanish los yog roj txheej
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