ferritic stainless hlau
Muaj 15% mus rau 30% chromium. Nws cov corrosion kuj, toughness thiab weldability nce nrog nce ntawm chromium cov ntsiab lus, thiab nws cov chloride kev nyuaj siab corrosion kuj zoo dua li lwm hom stainless hlau. Cov koom nrog hauv pawg no suav nrog Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28, thiab lwm yam. Vim nws cov ntsiab lus chromium siab, ferritic stainless hlau muaj qhov zoo corrosion kuj thiab oxidation tsis kam, tab sis cov khoom siv tsis zoo thiab cov txheej txheem. Nws feem ntau yog siv hauv cov qauv acid-resistant nrog me ntsis kev ntxhov siab thiab ua cov hlau tiv thaiv oxidation. Cov hlau no tuaj yeem tiv thaiv corrosion los ntawm huab cua, nitric acid thiab ntsev dej daws, thiab muaj qhov kub thiab txias oxidation tsis kam thiab me me thermal expansion coefficient. Nws yog siv nyob rau hauv nitric acid thiab khoom noj khoom haus Hoobkas khoom, thiab kuj yuav siv tau los ua qhov chaw uas ua hauj lwm ntawm kub kub, xws li roj turbine qhov chaw. .
Austenitic stainless hlau
Nws muaj ntau dua 18% chromium, thiab tseem muaj txog 8% npib tsib xee thiab ib qho me me ntawm molybdenum, titanium, nitrogen thiab lwm yam khoom. Nws muaj kev ua haujlwm zoo thiab tuaj yeem tiv taus corrosion los ntawm ntau yam xov xwm. Feem ntau siv qib austenitic stainless hlau suav nrog 1Cr18Ni9, 0Cr19Ni9, thiab lwm yam. Wc ntawm 0Cr19Ni9 steel yog tsawg dua 0.08%, thiab cov hlau tooj yog cim "0". Cov hlau no muaj ntau cov Ni thiab Cr, uas ua rau cov hlau nyob hauv lub xeev austenitic ntawm chav tsev kub. Hom hlau no muaj zoo plasticity, toughness, weldability, corrosion kuj thiab tsis-magnetic los yog tsis muaj zog hlau nplaum. Nws muaj qhov zoo corrosion kuj nyob rau hauv ob qho tib si oxidizing thiab txo cov xov xwm. Nws yog siv los ua cov khoom siv acid-resistant, xws li cov khoom siv tiv thaiv corrosion-resistant. Linings, pipelines, nitric acid-resistant khoom qhov chaw, thiab tseem tuaj yeem siv los ua cov khoom tseem ceeb ntawm stainless hlau moos thiab cov hniav nyiaj hniav kub. Austenitic stainless hlau feem ntau txais kev kho cov tshuaj, uas yog, cov hlau yog rhuab mus rau 1050 ~ 1150 degree, thiab tom qab ntawd dej-txias los yog cua-txias kom tau ib theem austenite qauv.
Austenitic-ferritic duplex stainless hlau
Nws muaj qhov zoo ntawm ob qho tib si austenitic thiab ferritic stainless hlau thiab muaj superplasticity. Stainless hlau nrog kwv yees li ib nrab austenite thiab ferrite qauv txhua. Hauv cov ntsiab lus ntawm cov pa roj carbon tsawg, cov ntsiab lus chromium (Cr) yog nruab nrab ntawm 18% thiab 28%, thiab cov ntsiab lus nickel (Ni) yog nruab nrab ntawm 3% thiab 10%. Qee cov hlau kuj tseem muaj cov hlau alloying xws li Mo, Cu, Si, Nb, Ti, thiab N. Cov hlau no muaj cov yam ntxwv ntawm ob qho tib si austenitic thiab ferritic stainless hlau. Piv nrog rau ferrite, nws muaj ntau dua plasticity thiab toughness, tsis muaj chav tsev kub brittleness, ho txhim kho intergranular corrosion kuj thiab vuam kev ua tau zoo, thaum tuav cov ntsiab lus hlau. Cov khoom stainless hlau yog nkig ntawm 475 degree, muaj thermal conductivity, thiab muaj superplasticity thiab lwm yam ntxwv. Piv nrog austenitic stainless hlau, nws muaj lub zog siab thiab txhim kho kev ua haujlwm zoo rau intergranular corrosion thiab chloride stress corrosion. Duplex stainless hlau muaj zoo heev pitting corrosion kuj thiab kuj yog ib tug nickel-txuag stainless hlau.
nag lossis daus hardened stainless hlau
Lub matrix yog austenite los yog martensite qauv, thiab cov qib ntawm nag lossis daus hardening stainless hlau muaj xws li 04Cr13Ni8Mo2Al, thiab lwm yam. Nws yog stainless hlau uas yuav hardened (strengthened) los ntawm nag lossis daus hardening (tseem hu ua lub hnub nyoog hardening).
martensitic stainless hlau
Siab zog, tab sis tsis zoo plasticity thiab weldability. Feem ntau siv cov qib martensitic stainless hlau xws li 1Cr13, 3Cr13, thiab lwm yam. Vim lawv cov ntsiab lus carbon siab, lawv muaj lub zog siab, hardness thiab hnav tsis kam, tab sis me ntsis corrosion kuj. Lawv yog siv rau cov ntawv thov nrog cov kev xav tau siab dua ntawm cov khoom siv kho tshuab thiab kev tiv thaiv corrosion. Qee qhov chaw uas yuav tsum tau ua, xws li springs, turbine blades, hydraulic li qub, thiab lwm yam. Cov hlau no yog siv tom qab quenching thiab tempering. Annealing yuav tsum tau tom qab forging thiab stamping.
Stainless hlau phaj thiab strips rau cov khoom siv siab
Tshwj xeeb stainless hlau rau cov hlab ntsha siab muaj qhov xav tau meej rau nws cov kev faib tawm thiab cov lej, qhov loj me, cov duab thiab qhov tso cai sib txawv, cov kev xav tau, cov qauv kev sim, kev tshuaj ntsuam xyuas, ntim, cim thiab cov ntawv pov thawj zoo. Cov qib siv feem ntau suav nrog 06Cr19Ni10, 022Cr17Ni12Mo2, thiab lawv cov lej digital yog: S30408, S31603, thiab lwm yam. Feem ntau siv hauv cov khoom noj khoom haus, tshuaj machinery thiab lwm yam khoom siv huv.
