DIN17175 ST45.8 yogcarbon-manganese (C-Mn) steel khoom tsim tshwj xeeb rau kev siv hauv siab - siab boiler daim ntawv thov. Nov yog cov ncauj lus kom ntxaws txog nws cov khoom siv thiab kev siv:
Khoom siv
Thawj Alloying ElementsCarbon (C) thiab Manganese (Mn).
Cov yam ntxwv tseem ceeb:
Zoo siab - qhov kub thiab txias tsis kam.
Zoo heev thermal conductivity.
Tsim nyog toughness thiab ductility ntawm siab kub.
Standard thiab Specifications
Txuj: DIN 17175 (German Industrial Standard for seamless steel tubes nyob rau hauv siab siab).
Qib: ST45.8, qhia txog lub zog tensile tshwj xeeb thiab tsim nyog rau siab - qhov kev pabcuam kub.
Daim ntawv thov
Siab -Boilers siab: Siv nyob rau hauv superheaters, reheaters, economizers, thiab lwm yam tshav kub exchanger Cheebtsam uas qhov kev khiav hauj lwm kub yog txawv los ntawm450℃rau 650 degreethiab siab tshaj9.8MPa ua.
Kev lag luam Petrochemical: Ua haujlwm nyob rau hauv cov kav dej thiab cov khoom siv uas yuav tsum tau ua haujlwm rau kev kub siab thiab kub.
Kev ua haujlwm nta
Siab -Qhov kub thiab txias: Khaws cov khoom siv kho tshuab nyob rau hauv qhov ntev raug rau qhov kub thiab txias.
Corrosion Resistance: Tsim nyog rau ib puag ncig uas scaling thiab oxidation yuav tshwm sim.
Weldability: Tau yooj yim welded siv cov txheej txheem txheej txheem, ua rau nws zoo tagnrho rau fabricating complex boiler systems.
DIN17175 ST45.8 kub kub yeeb nkab Hoobkas
Cov txheej txheem tsim khoom ntawm ST45.8 seamless steel kav feem ntau suav nrog cov kauj ruam hauv qab no:
(1) Kev npaj Billet: Xaiv cov ntawv hlau uas ua tau raws li cov qauv thiab ua kom sov rau lawv ua ntej mus rau txheej txheem dov.
(2) Piercing: Txheej steel billet mus rau hauv lub hollow raj dawb paug siv ib tug tho zeb.
(3) Rolling: Ntxiv cov txheej txheem lub raj dawb paug rau hauv cov yeeb nkab steel seamless ntawm qhov xav tau loj siv cov txheej txheem kub dov lossis txias dov.
(4) Kev kho cua sov: Tshem tawm cov kev ntxhov siab sab hauv thiab txhim kho cov khoom siv ntawm cov yeeb nkab steel los ntawm cov txheej txheem normalizing lossis annealing.
(5) Kev Ua tiav: Ncaj, txiav, thiab ua qhov kev kho saum npoo ntawm cov yeeb nkab steel kom ntseeg tau tias nws qhov tseeb qhov tseeb thiab qhov zoo ntawm qhov zoo.
