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Tsev / Kev paub / Paub meej

Sep 11, 2025

Yuav ua li cas cov cuab yeej cuab tam ntawm Q235NH hloov nrog qhov kub?

1. Tsawg {- kub ntau (tsawg dua los yog sib npaug 0 degree, piv txwv li -40 Qib rau 0 degree)
Q235NH yog tsim nrog qis qis - kub tsis kam (rau cov kev cuam tshuam yog teev ntawm -40 Degree), tab sis nws cov khoom tseem hloov nrog cua txias:

 

Lub zog (tawm los / tensile lub zog): Nce me ntsis. Thaum cov tee kub thiab txias, piv rau cov yas ua kom tsis txhob muaj zog (piv txwv li ntawm 205 MPa) thiab ntau dua li ntawm 20℃rau ~ 250

Tougness (Cuam Tshuam Zog): Qhov kev hloov pauv rhiab tshaj plaws. Thaum Q235NH ua tau raws li qhov yuav tsum tau ua ntau dua lossis sib npaug ntawm 34) ntawm {}} 40 9 {- 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13}} 40 13} Yog tias raug rau cov ultra-tsawg (piv txwv li, -50℃lossis qis dua), nce kev pheej hmoo ntawm kev pheej hmoo ntawm kev cuam tshuam los sis kev co.

Plasticity (elongation): Txo qis. Txo qhov kub ntawm cov dej khov ntawm cov dav hlau siv lead ua ntej muaj ntau dua li lossis muaj kev sib luag rau (a))

2. Chav Chav Kub (10 Qib rau 30 degree)

Nov yog thaj chaw "zoo tshaj plaws" rau Q235NH, qhov twg nws cov khoom siv me me yog ruaj khov thiab xwm yeem nrog cov qauv specifications:

 

Lub zog: Tawm lub zog (muaj ntau dua lossis sib npaug nrog 235 MPa) thiab tensile muaj zog (rm {{pearing breter {{cov kabmob muaj peev xwm.

Kev muaj zog: Kev Cuam Tshuam Lub Zog (KV2) yog qhov zoo tshaj plaws tsawg kawg 34 @-60 j (eg, cua, tsheb vibration).

Lub qos: Elongation (ib qho ntau dua lossis sib npaug rau 22%) thiab txias khoov ua tau zoo (180℃khoov tau yam tsis muaj kab ke zoo li kev khoov thiab vuam.

3. Nruab nrab - qhov ntsuas kub (30℃mus rau 300 degree, piv txwv li, cua sov sov lossis ze} Qhov chaw cua sov)

Nyob rau hauv cov ntau no, Q235NH cov khoom pauv hloov maj mam muab, tsis muaj qhov ua tsis tau:

 

Lub zog: Maj mam txo qis. Raws li qhov kub nce, atomic motion accelerates nrawm nrawm thiab tensile lub zog thiab tensile lub zog thiab tensile lub zog thiab} tus lej rau ~ 190-210 mpa). Txawm li cas los xij, lub zog tseem txaus rau qis {{11} Log lub teeb ua (piv txwv li lub vaj trellises) uas tsis tau siv lub nra hnyav.

Kev muaj zog: Nce me ntsis. Cov khoom kub siab dua txhim kho cov hlau lub peev xwm los nqus lub zog thaum muaj 10-15% piv rau chav kub {}} tso rau qhov txaus ntshai ntawm binitt.

Lub qos: Txhim kho cov lus pom tseeb. Kev ntsuas kub kub yooj yim tswj cov Crystal lub dav hlau npleem, yog li elongation (a) yuav nce ntxiv rau ~ 24-26%, ua rau cov hlau yooj yim dua (piv txwv li, kub nyhav lossis shaping).

4. High-Temperature Range (>300 Degree, piv txwv li, piv txwv li, nyob ze muaj cua sov lossis siab - sov pa)

Tshaj li 300 degree, Q235NH cov cuab yeej kho tshuab ua rau muaj kev pom zoo tseem ceeb, thiab nws tsis pom zoo rau ntev- siv rau hauv cov no:

 

Lub zog: Poob ntau. Ntawm 400-500 degree, muaj zog los yuav plummet rau hauv qab no 150 mpa}

Kev muaj zog: Pib nce tab sis tom qab ntawd tsis lees. Hauv qab 400 degree, kev tawv tawv tseem nyob siab; Saum toj 400 degree, oxidation thiab grain coarsening pib kom tshwm sim, txo cov tawv tawv thiab ua rau cov steel nquag mus tawg nyob rau hauv kev thauj khoom hauv tsev.

Oxidation pheej hmoo: Kev kub siab ua kom nrawm Fe-}}}}} nws cov huab cua tsis kam ntev {}}}}} kev ua tau zoo.

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