Cov tshuaj muaj pes tsawg leeg ntawm stainless hlau 1.4021 tseem hu ua martensitic stainless hlau
1.4021 stainless hlau yog German-ua stainless hlau, tseem hu ua martensitic stainless hlau.
1.4021 stainless hlau tshuaj muaj pes tsawg leeg:
C 0.16-0.25
Si Less dua los yog sib npaug rau 1.00
Mn Tsawg dua lossis sib npaug rau 1.00
Cr 12 00-14 00
P Tsawg dua lossis sib npaug rau 0.040,
S Tsawg dua lossis sib npaug rau 0.030
Khoom siv
kho
tshaj tawm
1.4021 stainless hlau khoom
Hardness Tsawg dua los yog sib npaug rau HB223
Cov chaw thov
kho
tshaj tawm
Cov yam ntxwv thiab Scope ntawm kev siv:
Nws muaj qee yam hnav tsis kam thiab corrosion tsis kam, siab hardness, thiab nws tus nqi yog qis tshaj ntawm stainless hlau pob. Nws yog qhov tsim nyog rau kev ua haujlwm ib puag ncig nrog cov kev xav tau ntawm cov hlau stainless.
Haum rau txhua yam ntawm precision machinery, bearings, cov khoom siv hluav taws xob, khoom siv, twj, meters, tsheb thauj mus los, khoom siv hauv tsev, thiab lwm yam.
Nws feem ntau yog siv los tsim cov khoom uas tiv taus huab cua, chav dej, dej thiab oxidizing acid corrosion.
Nws muaj qee yam hnav tsis kam thiab corrosion tsis kam, siab hardness, thiab nws tus nqi yog qis tshaj ntawm stainless hlau pob. Nws yog qhov tsim nyog rau kev ua haujlwm ib puag ncig nrog cov kev xav tau ntawm cov hlau stainless. Haum rau txhua yam ntawm precision machinery, bearings, cov khoom siv hluav taws xob, khoom siv, twj, meters, tsheb thauj mus los, khoom siv hauv tsev, thiab lwm yam. Nws yog feem ntau siv los tsim cov khoom uas tiv taus huab cua, chav, dej thiab oxidizing acid corrosion.
Stainless hlau feem ntau yog cov ntsiab lus dav dav rau stainless hlau thiab acid-resistant steel. Stainless hlau yog hais txog cov hlau uas tiv taus corrosion los ntawm cov xov xwm tsis muaj zog xws li cua, chav, thiab dej, thaum acid-resistant steel hais txog cov hlau uas tiv taus corrosion los ntawm chemically corrosive media xws li acids, alkali, thiab ntsev. Stainless hlau tau qhia thaum pib ntawm lub xyoo pua no thiab muaj keeb kwm ntawm ntau tshaj 90 xyoo. Lub invention ntawm stainless hlau yog ib qho kev ua tiav loj hauv keeb kwm ntawm lub ntiaj teb metallurgy. Txoj kev loj hlob ntawm stainless hlau tau tso ib qho tseem ceeb ntawm cov khoom siv thiab thev naus laus zis hauv kev txhim kho kev lag luam niaj hnub thiab kev kawm txuj ci thiab thev naus laus zis. Muaj ntau hom stainless hlau nrog cov khoom sib txawv. Nws tau maj mam tsim ntau pawg loj hauv txoj kev txhim kho. Raws li cov qauv tsim, nws tau muab faib ua plaub pawg: martensitic stainless hlau (xws li nag lossis daus hardened stainless hlau), ferritic stainless hlau, austenitic stainless hlau thiab austenite ntxiv rau ferrite duplex stainless hlau; Raws li cov tshuaj lom neeg muaj pes tsawg leeg lossis cais los ntawm qee cov yam ntxwv hauv cov hlau, nws tau muab faib ua chromium stainless hlau, chromium-nickel stainless hlau, chromium-nickel-molybdenum stainless hlau, low-carbon stainless hlau, high-molybdenum stainless hlau, siab. - purity stainless hlau, thiab lwm yam; Raws li cov yam ntxwv ntawm kev ua tau zoo thiab kev siv hlau, nws tau muab faib ua nitric acid-resistant stainless hlau, sulfuric acid-resistant stainless hlau, pitting corrosion-resistant stainless hlau, kev nyuaj siab corrosion-resistant stainless hlau, high-strength stainless hlau, thiab lwm yam. ; Raws li cov yam ntxwv ntawm kev ua haujlwm ntawm cov hlau, nws tau muab faib ua cov hlau tsis muaj qhov kub thiab txias, tsis muaj hlau tsis sib nqus, yooj yim txiav stainless hlau, superplastic stainless hlau thiab lwm yam. , tshuaj muaj pes tsawg leeg yam ntxwv ntawm steel, thiab ib tug ua ke ntawm ob. Feem ntau muab faib ua martensitic stainless hlau, ferritic stainless hlau, austenitic stainless hlau, duplex stainless hlau thiab nag lossis daus hardening stainless hlau, los yog muab faib ua ob pawg: chromium stainless hlau thiab nickel stainless hlau.
1.4021 stainless hlau taw qhia:
Nws muaj kev ua haujlwm zoo heev hauv lub xeev annealed, thiab cov khoom siv nti ntawm cov khoom siv annealed 420 tawg zoo yam tsis tau tsim cov sawdust. Cov khoom siv stainless hlau zoo tshaj plaws no tuaj yeem tiv taus ntau hauv pem teb hardness tom qab kev kho sov. Qib 1.4021 hlau (tseem hu ua ASTM420 thiab SS2303) yog ib qho over-tensile martensitic stainless hlau nrog cov khoom zoo corrosion. Cov hlau no tuaj yeem siv tau thiab tsim nyog rau kev tsim cov khoom tshwj xeeb nrog kev ua haujlwm zoo rau huab cua, dej vapor, dej tshiab, qee yam alkali hlau thiab lwm yam sib xyaw ua kom muaj zog.
Nws muaj txiaj ntsig zoo rau cov huab cua qhuav, dej tshiab, me me alkalis thiab acids, tab sis muaj kev tiv thaiv qis dua qhov sib npaug ntawm cov qib tsis pub dawb. Corrosion kuj yog qis dua qib austenitic thiab tseem qis dua 17% chromium ferritic alloys xws li Qib 430.
Tsis siv rau hauv marine lossis chloride ib puag ncig. Hlau yog magnetic nyob rau hauv nws quenched thiab tempered lub xeev. Martensitic stainless hlau tuaj yeem ua cov txheej txheem thermomechanically los muab cov khoom siv zoo heev - lub zog, ductility thiab machinability - thaum tswj kom muaj kev tiv thaiv corrosion txaus. 2H13 tsis resistant rau chlorine, ntsev thiab intergranular corrosion.
1.Introduction rau cov muaj pes tsawg leeg ntawm 4021 stainless hlau:
Khoom siv: 1.4021
Qauv: X20Cr13
Txheem: DIN 17400
● Cov yam ntxwv thiab kev siv:
X20Cr13 German martensitic stainless hlau, tab sis nws cov toughness thiab corrosion kuj yog me ntsis qis. X20Cr13 stainless hlau yog siv los tsim cov khoom uas muaj kev ntxhov siab ntau dua. X20Cr13 stainless hlau yog sib npaug rau 2Cr13 hauv kuv lub teb chaws thiab 420 hauv Tebchaws Meskas.
● Tshuaj muaj pes tsawg leeg:
Cov pa roj carbon C: {{0}}.18 ~ 0.22
Silicon Si: Tsawg dua lossis sib npaug rau 1.00
Manganese Mn: Tsawg dua lossis sib npaug rau 1.00
Phosphorus P: Tsawg dua lossis sib npaug rau 0.045
Sulfur S: Tsawg dua lossis sib npaug rau 0.030
Chromium Cr: 12 00 ~ 14 00
Molybdenum hmoov: -
Nickel :-
Vanadium V: -
1.4021 stainless hlau kev ua tau zoo qhia:
Kev kho cua sov + QT700
Peeling pas nrig feature
Tensile zog, R?m: 700 - 850 MPa
Yield point R?p0.2,?>500 MPa
Elongation, A: >13%
Kev cuam tshuam tsis kam, KV:> 25J
Properties ntawm txoj hlua khi
Tensile zog R?m: 700-1000 MPa
Yield point R?p0.2,?>500 MPa
Elongation, A: >8%
Kev cuam tshuam tsis kam, KV:> 25J
Kev kho cua sov + QT800
Tensile zog, R?m: 800-950 MPa
Yield point R?p0.2,?>600 MPa
Elongation, A: >12%
Kev cuam tshuam tsis kam, KV:> 20J
Thaum tshav kub kub, c?p?= 460 J * kg?-1?* K?-1
Modulus ntawm elasticity, E=215 GPa
Thermal conductivity λ= 30 W * m?-1?* K?-1
Resistivity, Ω: 0.60 mkOhm * m
Linear expansion coefficient: 10.5 * 10?-6?K?-1
1.Specific ranges of sulfur content in 4021 tuaj yeem muab kev txhim kho tshwj xeeb. Rau kev ua tau zoo, nws raug pom zoo thiab tso cai los tswj cov ntsiab lus sulfur ntawm 0.015% thiab 0.030%. Rau weldability, nws raug pom zoo thiab tso cai los tswj cov ntsiab lus sulfur ntawm 0.008% thiab 0.030%. Txhawm rau txhim kho polishability, nws raug nquahu kom tswj cov ntsiab lus sulfur mus rau qhov siab tshaj plaws ntawm 0.015%.
Cov ntsiab lus tsis tau teev nyob rau hauv lub rooj yuav tsis txhob txwm muab ntxiv rau cov hlau yam tsis tau txais kev tso cai los ntawm tus neeg yuav khoom, tshwj tsis yog tias qhov raug muab pov tseg.
1.4021 Qib no yog siv rau kev tsim cov bolts kub, turbine hniav, riam, kho kom zoo nkauj, cov cuab yeej phais, bushings, valve rooj, scrapers, hniav, ramparts, check li qub, springs, tshuab qhov chaw, siab casting pwm thiab pins. Raug rau lub teeb loads nyob rau hauv lub tsheb, petrochemical, industrial hydraulics thiab lub zog industries.
