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1. Lub cev muaj zog ntawm austenitic stainless hlau
High resistivity - nyob rau hauv lub premise ntawm tib lub tam sim no, ntau cua sov yog generated nyob rau hauv ib chav tsev ntawm lub sij hawm
Loj coefficient ntawm linear expansion - Nyob rau hauv tib qhov kub thiab txias input, lub deformation yog loj thiab cov kev ntxhov siab yuav raug generated.
Tsis zoo thermal conductivity - qeeb cua sov dissipation.
2. Feem ntau qhov tsis zoo hauv cov txheej txheem vuam ntawm austenitic stainless hlau
1) Stomata: Hydrogen pores tshwm sim los ntawm ya raws lossis tsis txaus dryness tshwm sim ntau zaus
2) Cov kab nrib pleb: kub tawg thiab arc qhov tawg tshwm sim los ntawm P thiab S sib cais tshwm sim ntau zaus (ua tib zoo saib arc sau tau zam)
3) Intergranular corrosion: nyob rau hauv qhov kub thiab txias cheeb tsam ntawm 450-850 ° C rau ib lub sij hawm ntev, lub grain ciam precipitates chromium carbides los tsim chromium-tsis zoo grain ciam teb.
Stomata
Kev tawg
Intergranular corrosion kuj
3 Stainless hlau nrog tes electrode dav dav vuam yam tseem ceeb
Txuag qhov xwm txheej
Yuav tsum tau muab khaws cia rau hauv lub tsev khaws khoom kom qhuav, nws raug pom zoo tias qhov kub hauv tsev yog siab dua 5 ° C, qhov txheeb ze av noo yog ≤ 60%, thiab khaws cia tsawg dua 3 xyoos.
Thaum khaws cia, nws yuav tsum yog 300mm saum av thiab ntau tshaj 300mm saum phab ntsa.
Tsis txhob muab pov rau ntawm lub siab thaum nqa, txwv tsis pub nws yooj yim ua rau daim tawv nqaij poob.
Kev npaj ua ntej vuam
1) Lub vuam pas nrig yuav tsum tau qhuav rau 300 ° 350 ° C rau 1 teev, thiab qhov kub tuaj yeem nce mus rau 350 ° C lossis lub sijhawm ziab tuaj yeem txuas ntxiv kom tsim nyog thaum nws ntub heev, thiab cov txheej txheej txheej txheej thaum lub sijhawm ziab yuav tsum tsis txhob ntau tshaj 3 txheej;Nws yog qhov zoo tshaj plaws los siv nws nrog ziab los yog muab tso rau hauv ib lub thoob hluav taws xob rwb thaiv tsev tsis pub ntau tshaj 2 hnub kom txuag nws kom tsis txhob muaj qhov tsis tsim nyog kom qhuav los tiv thaiv qhov vuam pas nrig ntawm daim tawv nqaij los ntawm kev poob.
2) Cov roj thiab dej xeb ntawm qhov chaw vuam yuav tsum tau muab ntxuav kom huv
Vuam txheej txheem tswj
1) Kev xaiv tam sim no: Xa mus rau I = (25-40) * DD yog cov kab hluav taws xob electrode
2) Sim txo qhov arc vuam
3) Lub viav vias vuam yuav tsum tsis txhob dav dhau, feem ntau hauv 3 npaug ntawm txoj kab uas hla ntawm electrode
4) Lub vuam ceev yuav tsum tsis txhob qeeb dhau los tiv thaiv overheating thiab slagging;Txawm li cas los xij, nyob rau hauv cov ntaub ntawv ntawm kev tawg yooj yim, koj tuaj yeem xaiv me me tam sim no qeeb vuam
5) Vim yog cov yam ntxwv ntawm cov hlau tsis muaj steel hauv ntsug vuam, cov hlau molten yog yooj yim ntws, thiab qhov kev xaiv zoo tshaj plaws yog siv txoj kev sib tsoo vuam.
6) Thaum ntau txheej (channel) vuam, vuam slag yuav tsum tau muab ntxuav
7) Lub qhov arc yuav tsum tau ntim thaum lub arc kaw
Cov lus qhia ntxiv
1) Thaum siv AC fais fab mov, cov txaws yog qhov loj, cov tawv nqaij yog ib qho yooj yim rau redden, qhov tob tob tob, thiab nws yooj yim rau lo rau lub rooj tsavxwm, yog li nws pom zoo kom siv DC + vuam.
2) Thaum siv DC, cov xaim hauv av yog qhov zoo tshaj plaws txuas mus rau nruab nrab ntawm qhov chaw nres tsheb thiab kho kom tsis txhob muaj qhov sib txawv ntawm arc lossis arc tawg.
| Qeb | Hom tawv nqaij | Khoom | Kub | Sijhawm |
| stainless hlau | Titanium calcium hom | E307-16, E308-16, E308L-16, E309-16, E309H-16, E309L-16, E309LMo-16, E310-16, E310Mo-10, E310Nb-16, E316-16-16, 16, E317L-16, E318-16, E320-16, E347-16, E385-16, E410-16, E410NiMo-16, E2209-16, E2307-16, E2553-16, E241593, E2595-16 | 300-350 ℃ | 60 feeb |
| stainless hlau | Tsawg hydrogen hom | 308, 309, 310, 316, 347, 385, 507, 2209, 2553, 2593, 2594, 2595 | 300-350 ℃ | 60 feeb |
Post lub sij hawm: Oct-13-2022