1.4720 Stainless hlau yog dab tsi?

1.4720 stainless hlau, feem ntau hu ua X10CrAlSi18 los yog UNS S13800, yog ferritic cua sov-resistant stainless hlau nrog zoo heev - kub oxidation kuj vim nws siab chromium thiab txhuas cov ntsiab lus. Kev sib xyaw ua ke ntawm 17-19% chromium thiab 0.70-1.20% txhuas txhawb kev tsim kom muaj kev ruaj khov, ua raws li txhuas-chromium oxide nplai uas muab kev tiv thaiv zoo tshaj plaws tiv thaiv scaling thiab oxidation ntawm qhov kub siab txog li 950℃. Qhov no ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev thov kom muaj kev kub ntxhov siab uas yuav tsum tau ua haujlwm rau thermal cycling thiab corrosion, xws li cov khoom siv hluav taws xob, cov khoom siv kho cua sov, thiab cov tshuab cua sov.

 

Qhov cua sov no- qib ferritic resistant yog tus qauv raws li cov txheej txheem thoob ntiaj teb tseem ceeb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4720
ASTM / AISI (USA)	X10CrAlSi18, UNS S13800
Lub Npe	Chromium{0}} txhuas hlau

Nws muaj pes tsawg leeg muaj xws li siab chromium thiab txhuas kom zoo heev -kub oxidation kuj.

Lub ntsiab	C	Si	Mn	P	S	Cr	Al
Cov ntsiab lus (%)	Tsawg dua lossis sib npaug li 0.12	0.70 - 1.40	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua lossis sib npaug li 0.04	Tsawg dua los yog sib npaug li 0.03	17.0 - 19.0	0.70 - 1.20

Nws muaj qhov zoo siab - kub lub zog thiab oxidation zoo heev.

Khoom	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HB)
Tus nqi zoo (Room Temp)	Ntau tshaj lossis sib npaug li 280 MPa	480 - 680 MPa	Ntau dua lossis sib npaug li 20%	Tsawg dua los yog sib npaug li 210
Tus nqi zoo (800 degree)	~ 35 MPa	~ 50 MPa	~ 40%	-

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4720 / X10CrAlSi18

Zoo heev High -Temperature Oxidation Resistance:Cov ntsiab lus chromium siab (17-}19%) ua ke nrog txhuas (0.70-1.20%) txhawb kev tsim cov khoom ruaj khov, ua raws li txhuas-chromium oxide nplai uas muab kev tiv thaiv zoo tshaj plaws rau kev ntsuas thiab oxidation txog li 950℃(1740℃F).

Zoo Thermal Fatigue Resistance:Cov qauv ferritic muab kev ua haujlwm zoo rau thermal cycling, ua rau nws tsim nyog rau kev siv nrog rov ua cua sov thiab txias.

Resistance rau Sulfur thiab Carburizing Atmospheres:Ua tau zoo nyob rau hauv sulfur- muaj thiab carburizing cua nyob qhov twg austenitic stainless hlau yuav degrade.

Tus nqi qis:Tsis muaj npib tsib xee ua rau nws pheej yig dua li austenitic cua sov- qib resistant.

 

Cov ntawv thov tseem ceeb:

Rauv Cheebtsam:Radiant tubes, cua sov cov ntsiab lus, cov kab hluav taws xob, cov khoom siv hluav taws xob, thiab cov phiaj xwm txhawb nqa.

Cov khoom siv kho cua sov:Retorts, muffles, pob tawb, thiab cov tais rau kev kho cua sov.

Muaj cua sov:Recuperators, kub exchangers, thiab radiant tube sheaths.

Petrochemical:Cheebtsam hauv nruab nrab- cov khoom siv kub thiab cov hloov kho.

Automotive Exhaust:Catalytic converter txhawb nqa thiab tso tawm manifolds rau siab -kev siv kub.

Cov khoom siv hauv tsev:Burner Cheebtsam nyob rau hauv lub qhov cub gas, qhov cub rhaub, thiab qhov cub qhov cub.

 

1.4720 piv rau 1.4762 (446) thiab 1.4713 (X10CrAlSi13) li cas?
1.4720 muaj kev ua tau zoo ntawm 1.4713 thiab 1.4762. Nrog 17-19% chromium, nws muab kub muaj peev xwm tshaj 1.4713 (12-14% Cr, haum rau 900 degree) tab sis qis dua 1.4762 (23-27% Cr, haum rau 1100 degree). Cov ntsiab lus txhuas muab kev tiv thaiv oxidation ntxiv thoob plaws peb qib . 1.4720 feem ntau yog xaiv rau cov ntawv thov uas xav tau kev ua haujlwm kub siab dua 1.4713 tab sis qhov muaj peev xwm siab tshaj plaws ntawm 1.4762 tsis tas yuav tsum muaj. Nws muaj qhov sib npaug zoo ntawm tus nqi thiab kev ua haujlwm rau ntau daim ntawv thov cua sov txog li 950 degree.

 

Dab tsi yog qhov kev txiav txim siab vuam rau 1.4720?
Vuam 1.4720 yuav tsum tau saib xyuas vim nws cov qauv ferritic thiab cov ntsiab lus txhuas. Cov ntsiab lus tseem ceeb suav nrog:

Kev siv hluav taws xob qis qis yog qhov tseem ceeb los txo qis kev loj hlob ntawm cov qoob loo hauv tshav kub- cuam tshuam cheeb tsam

Preheating (200-300 degree) yog pom zoo rau cov seem tuab

Austenitic muab tub lim hlau (309L, 310L) raug pom zoo kom zoo dua vuam ductility

Tshaj tawm -weld annealing ntawm 750-800℃tej zaum yuav xav tau los kho cov ductility rau cov ntawv thov tseem ceeb

Cov ntsiab lus ntawm aluminium tuaj yeem cuam tshuam rau lub pas dej da dej thiab yuav xav tau cov txheej txheem tshwj xeeb

Kev tiv thaiv vuam yog feem ntau nyiam rau daim ntawv thov nyias nyias

Rau cov ntawv thov tseem ceeb, vuam yuav tsum tau ua nrog cov txheej txheem tsim nyog

 

Qhov ntsuas kub li cas yog 1.4720 haum rau?
1.4720 yog tsim rau kev pabcuam txuas ntxiv mus txog li 950℃(1740℃F) thiab kev pabcuam cuam tshuam txog 1000℃(1830℃F). Nws tuav tau zoo oxidation tsis kam nyob rau hauv no ntau yam, ua rau nws haum rau lub cub tawg Cheebtsam, cov khoom siv kho cua sov, thiab muaj cua sov tshuab. Rau cov ntawv thov uas yuav tsum tau muaj peev xwm kub siab dua (siab dua 950 degree), 1.4762 nrog cov ntsiab lus chromium siab dua yog pom zoo. Cov ntsiab lus txhuas muab kev tiv thaiv zoo tshaj plaws tiv thaiv kev ntsuas ntawm qhov kub siab, tab sis cov khoom siv tsis muaj zog nkag siab tshaj 850 degree.

 

Nrhiav rau kev ntseeg siab ntawm 1.4720 Stainless Hlau?
GNEE Steel cov khoom siv tus nqi- zoo 1.4720 (X10CrAlSi18) stainless hlau hauv phaj, ntawv, bar, thiab strip daim ntawv rau siab - kub kub- daim ntaub ntawv tiv taus. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav, kev tsim, thiab kev pabcuam vuam. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.