16 hmo 3yog cov qauv European (EN 10028 / EN 10216-2) chrome-molybdenum (Cr-}Mo) alloy steel siv rau siab-kub siv xws li cov hlab ntsha siab, boilers, thiab kav dej, muab lub zog zoo, weldability, thiab tsis kam mus rau creep thiab hydrogen nres nyob rau hauv lub zog siab, nquag pom muaj zog. Nws yog lub npe hu rau nws cov cua kub tsis kam, durability, thiab toughness, ua rau nws zoo tagnrho rau hnyav, high-pressure ib puag ncig.
Tshuaj muaj pes tsawg leeg
| Qib | C | Si | Mn | P | S | Cr | Mo | Ni | Nb | Ti | V | Al | N | Cu |
| 16 hmo 3 | 0.12/0.20 | 0.35 | 0.40/0.90 | 0.025 | 0.010 | 0.030 | 0.25/0.35 | 0.30 | – | – | – | – | 0.012 | 0.30 |
Mechanical Properties
| Qib | Thickness | Kub (degree C) | |||||||||
| 50 degree | 100 degree | 150 degree | 200 degree | 250 degree | 300 degree | 350 degree | 400 degree | 450 degree | 500 degree | ||
| (mm) | MPa | MPa | MPa | MPa | MPa | MPa | MPa | MPa | MPa | MPa | |
| 16 hmo 3 | Tsawg dua los yog sib npaug li 16 | 273 | 264 | 250 | 233 | 213 | 194 | 175 | 159 | 147 | 141 |
| >16 Tsawg dua lossis sib npaug li 40 | 268 | 259 | 245 | 228 | 209 | 190 | 172 | 156 | 145 | 139 | |
| >40 Tsawg dua los yog sib npaug rau 60 | 258 | 250 | 236 | 220 | 202 | 183 | 165 | 150 | 139 | 134 | |
| >60 Tsawg dua los yog sib npaug rau 100 | 238 | 230 | 218 | 203 | 186 | 169 | 153 | 139 | 129 | 123 | |
| >100 Tsawg dua los yog sib npaug rau 150 | 218 | 211 | 200 | 186 | 171 | 155 | 140 | 127 | 118 | 113 | |
| >150 Tsawg dua los yog sib npaug rau 250 | |||||||||||
Cov ntawv thov tseem ceeb
Kev kub siab lub nkoj thiab boiler manufacturing:Haum rau fabricating boiler nruas, headers, heat exchangers, thiab siab hlab ntsha uas ua hauj lwm tsis tu ncua ntawm nruab nrab thiab siab kub (txog 530 degree).
Kev lag luam tseem ceeb:Dav siv nyob rau hauv thermal fais fab nroj tsuag, tshuaj nroj tsuag, thiab petrochemical industries raws li ib tug tseem ceeb cov ntaub ntawv rau cov khoom thauj los yog ua hauj lwm siab -kub kub, dej kub, los yog corrosive media.
High -kub thiab siab - cov kav dej siab:Siv rau hauv kev tsim cov kav dej thiab fittings, ua kom muaj kev nyab xeeb ntawm kev sib kis hauv cov chaw ua haujlwm hnyav.
Daim ntawv thov nruj me ntsis
Kev tswj qhov kub thiab txias:Kev khiav hauj lwm kub yuav tsum nyob rau hauv -20℃mus rau 530 degree. Tshaj qhov siab tshaj qhov txwv yuav txo cov neeg kho tshuab lub zog thiab nkag siab tsis kam, thaum qhov kub thiab txias qis dua tuaj yeem ua rau tawg tawg.
Vuam txoj kev xav tau:Preheating (feem ntau yog 80-}150 degree) thiab tom qab vuam thaum tshav kub kub kho (PWHT) yog qhov yuav tsum tau ua kom tshem tawm cov kev ntxhov siab, tiv thaiv cov kab mob khaub thuas, thiab xyuas kom muaj kev sib koom tes sib koom ua ke.
Ua raws li tus qauv tsim:Tsuas yog siv tau rau cov khoom siv nrog qhov ntsuas siab tshwj xeeb; cov ntaub ntawv thickness yuav tsum sib phim ua hauj lwm siab thiab kub kom tsis txhob overloading.
Tsis yog -kev kuaj kev puas tsuaj:Ua ntej daim ntawv thov, kuaj ultrasonic, kuaj hluav taws xob thiab lwm yam tsis yog -kev kuaj kev puas tsuaj yuav tsum tau ua ntawm cov khoom thiab nws cov welds txhawm rau txheeb xyuas qhov tsis xws luag.
Kev tiv thaiv- kev ntsuas corrosion:Nyob rau hauv ib puag ncig corrosive, tsim nyog los tiv thaiv - txoj kev corrosion (xws li txheej los yog hauv ob sab phlu) yuav tsum tau txais kev pom zoo los tiv thaiv cov khoom degradation thiab txuas ntxiv lub neej kev pab cuam.
Kev khiav dej num
Raw khoom npaj:
Xaiv cov khoom tsim nyog 16Mo3 steel billets lossis daim hlau, thiab ua ntej- tshuaj xyuas kom tshem tawm qhov tsis xws luag xws li cov kab nrib pleb, nplai thiab impurities, ua kom cov khoom siv tau raws li cov qauv kev qhia.
Cua sov thiab ua haujlwm kub:
Tshav kub cov ntaub ntawv raw khoom sib npaug mus rau qhov ntsuas kub (feem ntau 1050-1150 degree) thiab ua kom sov rau ib lub sijhawm. Ua cov txheej txheem kub txheej txheem xws li forging, dov lossis dabtsi yog khoov, tom qab ntawd txias lub workpiece nyob rau hauv ib txoj kev tswj kom tsis txhob muaj qhov txawv txav.
Kev kho cua sov:
Ua kom normalization (cua sov rau 890-950 degree, tuav thiab cua txias) kom kho cov qauv nplej. Tempering (600-650 degree, tuav thiab txias) yog xaiv tau los txo cov kev ntxhov siab sab hauv thiab txhim kho toughness, txuam cov kev pabcuam.
Machining thiab vuam:
Siv cov cuab yeej txheem rau kev tig, milling lossis drilling nrog kom txias / lubrication. Weld nrog preheating (80{2}}150 degree) los tiv thaiv qhov txias txias, ua raws li kev kho cua sov tom qab vuam kom ntseeg tau tias kev sib koom ua ke.
Kev tshuaj xyuas zaum kawg thiab tu:
Tshem cov nplai / roj los ntawm kev tua blasting lossis pickling. Ua tsis yog- kuaj kev puas tsuaj (ultrasonic, radiographic) txhawm rau txheeb xyuas qhov tsis xws luag, ua kom cov khoom tiav tiav.
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
Lub hom phiaj ntawm molybdenum hauv 16Mo3 steel yog dab tsi?
Molybdenum nyob rau hauv 16Mo3 txhim kho siab -kub lub zog, nkag siab, thiab hardenability. Nws kuj tseem txhim kho cov hlau tsis kam rau kev ntxhov siab corrosion tawg hauv qhov chaw hnyav.
Puas yog 16Mo3 steel xav tau preheating ua ntej vuam?
Yog lawm, preheating yog tsim nyog rau 16Mo3 vuam. Preheating rau 100-150℃txo qhov kub thiab txias, tiv thaiv cov kab nrib pleb hauv cheeb tsam weld, thiab ua kom cov khoom sib koom ua ke.
Post-weld kub kho kub rau 16Mo3 steel yog dab tsi?
Cov lus pom zoo tshaj tawm -weld kub kho kub rau 16Mo3 yog 600-650 degree, tuav rau lub sijhawm tsim nyog. Qhov no relieves welding kev nyuaj siab, txhim kho weld joint toughness, thiab tiv thaiv intergranular corrosion.
Puas yog 16Mo3 steel yog qis- alloy steel?
Yog lawm, 16Mo3 yog ib qho qis- hlau alloy. Nws muaj me me ntawm cov ntsiab lus alloying (molybdenum, manganese) ntawm cov pa roj carbon steel, uas txhim kho nws cov khoom yam tsis muaj nqi ntau lawm.
Dab tsi yog qhov microstructure ntawm 16Mo3 steel tom qab kev kho cua sov?
Tom qab normalization los yog normalizing -tempering, 16Mo3 muaj ib tug nplua -grained ferrite thiab pearlite microstructure. Qhov microstructure no muab qhov sib npaug zoo ntawm lub zog, toughness, thiab ductility.
16Mo3 steel puas tuaj yeem txias - tsim?
16Mo3 tuaj yeem txias - tsim nyob rau hauv qee yam mob. Rau cov phaj tuab lossis cov duab nyuaj, yuav tsum tau preheating kom tsis txhob tawg. Kev ua kom txias yuav tsum tau ua raws li kev ntxhov siab kho cua sov yog tias xav tau.
Yuav ua li cas kuaj cov khoom siv ntawm 16Mo3 steel?
Cov cuab yeej siv tshuab raug kuaj los ntawm kev ntsuas tensile, kev ntsuam xyuas cuam tshuam, kev sim hardness, thiab kev ntsuam xyuas creep. Cov kev ntsuam xyuas no txheeb xyuas lub zog tensile, toughness, hardness, thiab siab -kub creep resistance raws li EN 10028-2.
Dab tsi yog qhov txawv ntawm 16Mo3 thiab 20Mo5 steel?
20Mo5 muaj molybdenum siab dua (0.45-0.60%) thiab cov ntsiab lus carbon ntau dua 16Mo3, muab qhov zoo dua siab -kub lub zog thiab creep resistance. 20Mo5 yog rau siab dua- cov khoom siv kub, thaum 16Mo3 yog rau cov ntawv thov kub.
Dab tsi yog daim ntawv thov ntawm 16Mo3 steel hauv kev lag luam petrochemical?
Nyob rau hauv petrochemicals, 16Mo3 yog siv rau reactors, tshav kub exchangers, thiab pipelines. Nws tiv taus qhov kub thiab txias thaum lub sij hawm roj refining thiab chemical processing, kom cov cuab yeej muaj kev ruaj ntseg.
16Mo3 steel puas tuaj yeem siv los tsim cov raj boiler?
Yog lawm, 16Mo3 yog dav siv rau boiler raj. Nws siab -kub tsis kam, siab- bearing peev, thiab zoo weldability ua rau nws haum rau superheaters, reheaters, thiab dej phab ntsa hauv boilers.