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QN1803 Stainless Hlau: Kev Ua Haujlwm Zoo Tshaj Plaws rau 304
2025-06-12 IB
Txheej txheem cej luam: QN1803 (tseem hu ua 304D lossis qib 1.4376) yog ib qho tshiab tsim austenitic stainless hlau los ntawm Tsingshan / Qingtuo. Nws yog formulated nrog siab nitrogen, siab chromium thiab tooj liab, thiab txo cov ntsiab lus nickel kom xa siab zog thiab corrosion kuj ntawm tus nqi qistshaj li tus qauv 304. QN1803 tau piav qhia tias yog "kev hloov pauv tus nqi rau cov tsoos tsho 304 Stainless hlau, ”kev"superior corrosion kuj, siab zog, thiab zoo heev hnav tsis kam". Nws high-nitrogen, qis-nickel tsim txo qis alloy nqi yam tsis muaj kev cuam tshuam kev ua haujlwm. Cov alloy yog ib qho yooj yim rau txheej txheem thiab vuam, thiab ua tau raws li cov qauv thoob ntiaj teb thiab cov ntawv pov thawj zaub mov, ua rau nws tsim nyog rau kev xa tawm thoob ntiaj teb.
High-Nitrogen, Nickel-Txuag Alloy Composition
QN1803's chemistry yog tsim los rau kev ua haujlwm thiab kev ua haujlwm tau zoo. Nws muaj Cr 17.5-19.5%, Los ntawm 1.0-3.5%, thiab N 0.20-0.30%, nrog Tsis tsuas yog 2.0-3.5% (piv rau ~ 8% hauv 304). Los ntawm qhov sib piv, 304 steel yog ~ 18% Cr, 8% Ni, ~ 0.045% N, thiab tsuas yog ~ 0.1% Cu. Ntxiv nitrogen thiab chromium boost zog thiab pitting kuj, thaum ntxiv tooj liab imparts antibacterial zog thiab zoo formability. Cov ntsiab lus qis nickel (thiab nruab nrab manganese) txo qis cov nqi khoom. Hauv luv, QN1803's high-Ni-txuag mis yields stainless hlau nrog corrosion thiab mechanical yam ntxwv sib npaug los yog zoo dua 304 ntawm tus nqi qis alloy.
Mechanical Strength thiab Durability
QN1803 nthuav qhia superior mechanical zog piv rau 304. Cov txiaj ntsig zoo rau cov ntawv txias-dov (0.5 hli) yog: tensile zog ~ 747 MPa vs 670 MPa rau 304, thiab tawm lub zog ~ 432 MPa vs 290 MPa. Hardness yog sib npaug siab dua (HV 230 vs 165). Elongation tseem siab (≈52% vs 59% rau 304) txawm tias lub zog boos. Hauv cov ntsiab lus siv tau, QN1803 cov txiaj ntsig yog hais txog 1.3 × uas ntawm 304 thaum khaws ductility (elongation ≥45%). Qhov tshwm sim yog ib qho nyuaj, qaug zog- thiab hnav-resistant khoom. Nws kuj welds thiab cov ntaub ntawv zoo: tom qab vuam lub zog sib tw los yog tshaj 304, thiab txias-forming tsis degrade corrosion kuj.
Cov ntaub ntawv tseem ceeb Mechanical:
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Tensile zog: ~ 747 MPa (vs 670 MPa rau 304).
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Yield zog: ~ 432 MPa (vs 290 MPa).
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Elongation: 52% (vs 58.5%).
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Hardness: HV230 vs HV165.
Superior Corrosion Resistance
Lub alloy siab Cr thiab N tsim zoo heev corrosion kev ua tau zoo. QN1803's Pitting Resistance Equivalent Number (PREN) tshaj 19, sib piv lossis tshaj 304 qhov tsis kam (PREN≈18.5). Hauv kev ntsuas tus qauv, QN1803 txawm qhia zoo dua corrosion kuj tom qab txias forming (bending, stamping, thiab lwm yam) piv rau 304. Nws yog heev resistant rau dilute acids (HCl, H₂SO₄) thiab chloride-muaj ib puag ncig. Piv txwv li, nyob rau hauv nruab nrab ntsev-txhaj tshuaj (NSS) kuaj ib GB / T qauv, QN1803 tsis pom muaj xeb tom qab 1000 teev. Hauv tib qhov kev sim 304 feem ntau yuav pib corrode. Qhov zoo tshaj ntsev-txhaj tshuaj tiv thaiv kab mob no qhia txog QN1803 qhov kev ntseeg siab nyob rau sab nraum zoov lossis dej hiav txwv.
Cov ntaub ntawv Corrosion:
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Ntoo: > 19.0 (304 muaj ≈18.5).
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Ntsev-Spray Resistance: Tsis muaj xeb tom qab 1000 h NSS kuaj.
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Acid / Chloride: Pov thawj zoo sib xws thiab pitting tsis kam tshaj 304, txawm tias tom qab tsim
Khoom noj khoom haus-qib kev nyab xeeb thiab tshuaj tua kab mob
QN1803 yog tag nrho cov zaub mov tsis muaj kev nyab xeeb thiab txawm muab cov nyhuv antibacterial built-in. Lub siab purity thiab qis-hlau hnyav ua tau raws li EU, German LFGB thiab JIS cov qauv rau chav ua noj thiab khoom noj khoom haus. Copper alloying (~ 1-3.5%) muab cov tshuaj tua kab mob muaj zog: cov kev ntsuam xyuas pom tau tias> 99.9% sterilization tus nqi hauv 4 teev (JIS tus qauv). Ua ke nrog zoo heev corrosion kuj nyob rau hauv ib txwm zaub mov acids / ntsev, QN1803 yog zoo tagnrho rau chav ua noj countertops, cookware, dab dej thiab hauv pem teb ntws. Piv txwv li, QN1803 dhau qhov kev xeem tsiv teb tsaws chaw hauv tebchaws rau cov hlau hnyav thiab tshaj 304 hauv cov kua qaub tsis muaj zog. Hauv cov dej tso tsheb hlau luam thiab cov khoom siv tu cev, tooj liab kuj tseem pab cuam tshuam cov kab mob loj hlob, ua rau cov dej khaws cia zoo dua.
Daim duab: Stainless-steel cookware set. QN1803's siab corrosion kuj thiab tooj liab-alloy cov ntsiab lus raws li nruj cov zaub mov-qib thiab cov qauv tshuaj tua kab mob (JIS/EU/LFGB) rau chav ua noj thiab cov khoom siv huv.
Daim ntawv thov thiab siv Case
QN1803 kev sib xyaw ua ke ntawm lub zog, kev tiv thaiv corrosion thiab tus nqi-zoo ua rau nws muaj ntau yam thoob plaws ntau qhov kev lag luam. Nws twb tau siv rau:
Kev tsim kho & Architecture: Cov vov tsev, phab ntsa panels, kab hlau rhuav phab ntsa thiab cov hniav cladding tau txais txiaj ntsig los ntawm QN1803 lub zog siab thiab huab cua tsis kam. Lub zog muaj zog ntau dua (ntau dua qib steel me me) tso cai rau cov khoom siv sib dua.
Piping thiab Infrastructure: Cov kav dej thiab hluav taws tua hluav taws, cov kav dej, cov kav dej thiab cov kav dej phwj tuaj tau lub neej ntev dua vim cov hlau tsis muaj zog tiv thaiv xeb thiab acid corrosion. Hauv cov kav dej los yog desulfurization yees, QN1803 tiv taus cov sulfur-muaj corrosion zoo dua li 304.
Dej Cia & Ua liaj ua teb: Tank, reservoirs thiab marine ua liaj ua teb qauv siv QN1803 rau nws antibacterial tooj liab cov ntsiab lus thiab dej ntsev kav. Nws lub zog kuj txhawb nqa hnyav hauv cov khoom siv tsiaj txhu.
Chav ua noj thiab khoom siv: Countertops, dab dej, cookware, thiab zaub mov machinery nyiam QN1803 rau nws cov zaub mov qib kev nyab xeeb. Nws tiv taus cov acids tsis muaj zog thiab cov kua qaub hauv chav ua noj zoo dua li 304, thiab ua tau raws li cov qauv kev nyiam huv thoob ntiaj teb.
Consumer & Commercial Products: Cov qhov rooj kho vajtse, cov vaj huam sib luag of elevator, thiab cov pob khawm zoo nkauj lossis cov ntsia hlau siv QN1803 qhov nyuaj dua thiab hnav tsis kam. Piv rau 304 nyob rau hauv qhov rooj / qhov rooj daim ntawv thov, QN1803 tuav tiav thiab zoo li nyob rau hauv kev cuam tshuam thiab cua loads. Nws kuj welds thiab polishes zoo rau cov khoom siv thiab cov thawv thauj khoom.
Daim duab: Stainless hlau rooj vag kho vajtse. QN1803 muaj zog dua hardness thiab lub zog ntau dua 304 rau architectural hardware thiab coj mus muag fixtures, thaum muab superior corrosion kuj nyob rau hauv sab nraum zoov ib puag ncig.
Qhov zoo tshaj 304 Stainless Hlau
Piv rau cov pa 304, QN1803 xa kev txhim kho tseem ceeb hauv thaj chaw tseem ceeb:
Mechanical Properties: Raws li tau sau tseg, nws qhov tensile thiab cov txiaj ntsig tau zoo yog kwv yees li 15-30% siab dua 304's. Hardness thiab qaug zog lub neej kuj tseem txhim kho, tso cai rau cov seem thinner lossis cov khoom sib zog rau tib yam kev ua haujlwm.
Corrosion Performance: QN1803 ntais ntawv lossis tshaj 304 qhov kev tiv thaiv corrosion hauv txhua qhov kev xeem. Nws qhov siab dua PREN thiab sulfuric / chloride kuj txhais tau tias nws ua tau zoo tshaj 304 tshwj xeeb tshaj yog nyob rau hauv kev txhoj puab heev lossis tsim. Nws tiv taus pitting thiab crevice corrosion txawm nyob rau hauv chav ua noj thiab marine atmospheres, ua rau nws muaj kev xaiv zoo dua rau kev siv sab nraum zoov thiab zaub mov.
Nqi Efficiency: Ua tsaug rau cov npib tsib xee qis thiab siab dua nitrogen / tooj liab, QN1803 tuaj yeem raug nqi mus txog ~ 20% tsawg dua 304 ib tuj (nyob ntawm kev ua lag luam) thaum muab kev sib npaug lossis zoo dua. Cov kws tshuaj ntsuam xyuas tau sau tseg tias "dab tsi 304 tuaj yeem ua tau, 304D tuaj yeem ua tau, thiab tus nqi pheej yig dua". Cov nqi qis dua thiab cov khoom siv lub neej ntev dua txhais tau tias qis dua tag nrho cov tswv cuab.
Khoom noj khoom haus / Kev Nyab Xeeb Kev Nyab Xeeb: QN1803 tau ntawv pov thawj rau kev siv khoom noj. Nws cov tooj liab-txhim kho, siab-purity muaj pes tsawg leeg dhau qhov kev sim tshuaj tua kab mob thiab kev tsiv teb tsaws chaw (EU, JIS, LFGB), uas qee qib 304 tsis tuaj yeem. Qhov no ua rau nws tshwj xeeb tshaj yog txaus nyiam rau chav ua noj, huv si thiab dej siv uas yuav tsum tau muaj ntawv pov thawj kev nyab xeeb.
Hauv cov ntsiab lus, QN1803/304D stainless hlau muaj engineers thiab procurement specialists ib tug high-kev ua tau zoo, khoom noj khoom haus-kev nyab xeeb, thiab nqi-zoo khoom. Nws kev sib xyaw ua ke ntawm siab nitrogen alloying, siab Cr / Cu, nruab nrab Ni muab nws lub zog txhua yam thiab kev tiv thaiv corrosion uas tau ntsib lossis tshaj 304's, thaum txuag ntawm cov nqi npib tsib xee. Lub alloy qhov pov thawj kev ntseeg tau nyob rau hauv cov qauv kev ntsuam xyuas thoob ntiaj teb (NSS 1000h, JIS antibacterial, thiab lwm yam) thiab nws daim ntawv thov dav ua rau nws txoj kev xaiv rau cov khoom siv stainless hlau niaj hnub no.