Stainless hlau ntawmCNC Machining qhov chawyog ib qho ntawm cov khoom siv hlau feem ntau hauv kev ntsuas kev ua haujlwm. Kev nkag siab txog kev paub stainless hlau yuav pab cov neeg ua haujlwm ntsuas kev xaiv zoo dua thiab siv.
Stainless hlau yog lub ntsiab lus ntawm stainless hlau thiab acid resistant steel. Cov hlau uas tiv taus qhov tsis muaj zog corrosion xws li huab cua, chav thiab dej los yog muaj cov khoom tsis muaj zog yog hu ua stainless hlau; Cov hlau uas tiv taus tshuaj corrosion nruab nrab (acid, alkali, ntsev thiab lwm yam tshuaj etching) yog hu ua acid resistant steel.
Stainless hlau yog hais txog cov hlau uas tsis muaj zog corrosion tawm xws li cua, chav thiab dej thiab tshuaj etching xov xwm xws li acid, alkali thiab ntsev, tseem hu ua stainless acid resistant steel. Hauv kev siv cov tswv yim, steel resistant rau tsis muaj zog corrosion nruab nrab feem ntau hu ua stainless hlau, thaum hlau resistant rau tshuaj nruab nrab hu ua acid resistant steel. Vim qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm ob, tus qub tsis tas yuav tiv taus cov tshuaj nruab nrab corrosion, thaum tom kawg yog feem ntau stainless. Kev tiv thaiv corrosion ntawm stainless hlau nyob ntawm cov hlau alloy muaj nyob hauv cov hlau.
Kev faib ua feem
Feem ntau, nws muab faib ua:
Feem ntau, raws li cov qauv metallographic, cov hlau tsis zoo tib yam tau muab faib ua peb hom: austenitic stainless hlau, ferritic stainless hlau thiab martensitic stainless hlau. Raws li peb qhov yooj yim metallographic qauv, dual-theem steel, nag lossis daus hardening stainless hlau thiab siab alloy steel nrog cov ntsiab lus hlau tsawg dua 50% tau muab los rau cov kev xav tau tshwj xeeb thiab lub hom phiaj.
1. Austenitic stainless hlau.
Lub matrix feem ntau yog austenitic qauv (CY theem) nrog lub ntsej muag nruab nrab cubic siv lead ua qauv, uas yog nonmagnetic, thiab feem ntau ntxiv dag zog (thiab tej zaum yuav ua rau tej yam hlau nplaum) los ntawm kev ua hauj lwm txias. Lub koom haum American Hlau thiab Hlau yog qhia los ntawm 200 thiab 300 series tooj, xws li 304.
2. Ferritic stainless hlau.
Lub matrix feem ntau yog cov qauv ferrite (theem a) nrog lub cev nruab nrab ntawm lub cubic siv lead ua qauv, uas yog sib nqus, thiab feem ntau tsis tuaj yeem hardened los ntawm kev kho cua sov, tab sis tuaj yeem ua kom muaj zog me ntsis los ntawm kev ua haujlwm txias. Lub koom haum American Hlau thiab Hlau yog cim 430 thiab 446.
3. Martensitic stainless hlau.
Lub matrix yog martensitic qauv (lub cev nruab nrab cubic los yog cubic), sib nqus, thiab nws cov khoom siv kho tshuab tuaj yeem hloov kho los ntawm kev kho cua sov. Lub koom haum American Iron thiab Steel yog qhia los ntawm cov lej 410, 420, thiab 440. Martensite muaj cov qauv austenitic ntawm qhov kub thiab txias. Thaum nws txias rau chav tsev kub ntawm tus nqi tsim nyog, cov qauv austenitic tuaj yeem hloov mus rau hauv martensite (ie, hardened).
4. Austenitic ferritic (duplex) stainless hlau.
Lub matrix muaj ob qho tib si austenite thiab ferrite ob-theem qauv, thiab cov ntsiab lus ntawm tsawg theem matrix feem ntau yog ntau tshaj 15%, uas yog sib nqus thiab tuaj yeem ntxiv dag zog los ntawm kev ua haujlwm txias. 329 yog ib hom duplex stainless hlau. Piv nrog rau austenitic stainless hlau, dual-theem steel muaj zog dua, thiab nws tsis kam mus rau intergranular corrosion, chloride kev nyuaj siab corrosion thiab pitting corrosion tau zoo heev.
5. nag lossis daus hardening stainless hlau.
Stainless hlau uas nws cov matrix yog austenitic los yog martensitic thiab tuaj yeem hardened los ntawm nag lossis daus hardening kho. Lub koom haum American Iron thiab Steel yog cim nrog 600 series tooj, xws li 630, piv txwv li 17-4PH.
Feem ntau hais lus, tshwj tsis yog rau alloy, austenitic stainless hlau muaj kev tiv thaiv corrosion zoo heev. Ferritic stainless hlau tuaj yeem siv rau hauv ib puag ncig uas tsis tshua muaj corrosion. Nyob rau hauv ib puag ncig nrog me ntsis corrosion, martensitic stainless hlau thiab nag lossis daus hardening stainless hlau yuav siv tau yog hais tias cov khoom yuav tsum muaj siab zog los yog hardness.
Cov yam ntxwv thiab lub hom phiaj
Nto technology
Thickness sib txawv
1. Vim hais tias nyob rau hauv cov txheej txheem dov ntawm steel cog machinery, lub yob yog me ntsis deformed vim cua sov, uas ua rau ib tug deviation nyob rau hauv lub thickness ntawm dov phaj. Feem ntau, nruab nrab thickness yog nyias ntawm ob sab. Thaum ntsuas lub thickness ntawm lub phaj, lub hauv paus ntawm lub phaj taub hau yuav tsum ntsuas raws li lub teb chaws txoj cai.
2. Kev kam rau siab feem ntau muab faib ua siab ntev thiab me me raws li kev lag luam thiab cov neeg siv khoom xav tau:
Piv txwv li
Feem ntau siv stainless hlau qib thiab cov khoom ntawm cov twj paj nruag
1. 304 stainless hlau. Nws yog ib qho ntawm feem ntau siv austenitic stainless hlau nrog ntau qhov kev siv. Nws yog tsim rau kev tsim cov duab sib sib zog nqus tsim qhov chaw, cov kav dej sib txuas, cov hlab ntsha, cov khoom siv, ntau yam ntsuas lub cev, thiab lwm yam, nrog rau cov khoom siv tsis sib nqus thiab kub thiab cov khoom siv.
2. 304L stainless hlau. Lub ultra-low carbon austenitic stainless hlau tsim los daws qhov hnyav intergranular corrosion nyiam ntawm 304 stainless hlau tshwm sim los ntawm Cr23C6 nag lossis daus nyob rau hauv qee qhov xwm txheej, nws cov sensitized intergranular corrosion kuj zoo dua li 304 stainless hlau. Tsuas yog lub zog qis, lwm yam khoom zoo ib yam li 321 stainless hlau. Nws yog tsuas yog siv rau cov khoom siv tiv thaiv corrosion thiab qhov chaw uas xav tau vuam tab sis tsis tuaj yeem kho tau, thiab tuaj yeem siv los tsim ntau lub cev ntsuas.
3. 304H stainless hlau. Rau cov ceg sab hauv ntawm 304 stainless hlau, cov pa roj carbon ntau feem yog 0.04% - 0.10%, thiab qhov kub siab ua haujlwm zoo dua rau 304 stainless hlau.
4. 316 stainless hlau. Qhov sib ntxiv ntawm molybdenum ntawm lub hauv paus ntawm 10Cr18Ni12 steel ua rau cov hlau muaj kev tiv thaiv zoo los txo qhov nruab nrab thiab pitting corrosion. Hauv dej hiav txwv thiab lwm yam xov xwm, qhov kev tiv thaiv corrosion yog superior rau 304 stainless hlau, feem ntau yog siv rau pitting corrosion resistant cov ntaub ntawv.
5. 316L stainless hlau. Ultra low carbon steel, nrog zoo tsis kam mus rau sensitized intergranular corrosion, yog tsim rau manufacturing tuab seem me me vuam qhov chaw thiab cov khoom, xws li cov ntaub ntawv los tiv thaiv corrosion nyob rau hauv petrochemical khoom.
6. 316H stainless hlau. Rau cov ceg sab hauv ntawm 316 stainless hlau, cov pa roj carbon ntau feem yog 0.04% - 0.10%, thiab qhov kub siab ua haujlwm zoo dua li ntawm 316 stainless hlau.
7. 317 stainless hlau. Kev tiv thaiv rau pitting corrosion thiab creep yog superior rau 316L stainless hlau. Nws yog siv los tsim cov khoom siv petrochemical thiab organic acid resistant.
8.321 stainless hlau. Titanium stabilized austenitic stainless hlau tuaj yeem hloov tau los ntawm ultra-low carbon austenitic stainless hlau vim nws cov kev txhim kho intergranular corrosion kuj thiab zoo kub kub txhua yam khoom. Tsuas yog rau lub sijhawm tshwj xeeb xws li kub siab lossis hydrogen corrosion kuj, feem ntau tsis pom zoo siv.
9.347 stainless hlau. Niobium stabilized austenitic stainless hlau. Qhov sib ntxiv ntawm niobium txhim kho cov intergranular corrosion kuj. Nws corrosion kuj nyob rau hauv acid, alkali, ntsev thiab lwm yam corrosive media yog tib yam li 321 stainless hlau. Nrog kev ua haujlwm zoo vuam, nws tuaj yeem siv los ua ob qho tib si corrosion resistant khoom thiab kub resistant steel. Nws yog tsuas yog siv nyob rau hauv thermal hwj chim thiab petrochemical teb, xws li ua cov hlab ntsha, kav dej, tshav kub exchangers, shafts, furnace tubes nyob rau hauv industrial furnaces, thiab cube thermometers.
10. 904L stainless hlau. Super tiav austenitic stainless hlau yog super austenitic stainless hlau tsim los ntawm OUTOKUMPU Lub Tuam Txhab ntawm Finland. Nws cov nickel pawg feem ntau yog 24% - 26%, thiab cov pa roj carbon ntau yog tsawg dua 0.02%. Nws muaj kev tiv thaiv corrosion zoo heev. Nws muaj kev tiv thaiv zoo corrosion nyob rau hauv cov tsis oxidizing acids xws li sulfuric acid, acetic acid, formic acid thiab phosphoric acid, nrog rau zoo tsis kam mus crevice corrosion thiab kev nyuaj siab corrosion. Nws muaj feem xyuam rau ntau qhov ntau ntawm sulfuric acid hauv qab 70 ℃, thiab muaj kev tiv thaiv zoo rau acetic acid ntawm txhua qhov concentration thiab kub nyob rau hauv lub siab ib txwm muaj thiab sib xyaw acid ntawm formic acid thiab acetic acid. Tus qauv qub ASMESB-625 tau muab faib ua npib tsib xee puag alloy, thiab tus qauv tshiab tau faib nws li stainless hlau. Nyob rau hauv Suav teb, tsuas muaj ib hom zoo sib xws ntawm 015Cr19Ni26Mo5Cu2 steel. Ob peb European cov tuam txhab lag luam siv 904L stainless hlau ua cov khoom tseem ceeb. Piv txwv li, lub ntsuas raj ntawm E + H loj flowmeter siv 904L stainless hlau, thiab rooj plaub ntawm Rolex watches kuj siv 904L stainless hlau.
11. 440C stainless hlau. Lub hardness ntawm martensitic stainless hlau, hardenable stainless hlau thiab stainless hlau yog siab tshaj, thiab hardness yog HRC57. Nws yog tsuas yog siv los ua nozzles, bearings, valve cores, valve rooj, tes tsho, valve stems, thiab lwm yam.
12. 17-4PH stainless hlau. Martensitic nag lossis daus hardening stainless hlau, nrog hardness ntawm HRC44, muaj lub zog siab, hardness thiab corrosion kuj, thiab tsis tuaj yeem siv ntawm qhov kub siab tshaj 300 ℃. Nws muaj zoo corrosion kuj rau cua thiab diluted acid los yog ntsev. Nws cov corrosion kuj yog tib yam li 304 stainless hlau thiab 430 stainless hlau. Nws yog siv los tsimCNC Machining qhov chaw, turbine hniav, valve cores, valve rooj, tes tsho, valve stems, thiab lwm yam.
Hauv kev lag luam kev lag luam, ua ke nrog cov khoom siv thoob ntiaj teb thiab cov teeb meem ntawm tus nqi, qhov kev xaiv ib txwm siv ntawm austenitic stainless hlau yog 304-304L-316-316L-317-321-347-904L stainless hlau, ntawm 317 tsis siv, 321 tsis yog. pom zoo, 347 yog siv rau kub kub corrosion kuj, 904L yog lub neej ntawd cov khoom siv rau qee yam ntawm cov neeg tsim khoom, thiab 904L tsis nquag xaiv hauv kev tsim.
Hauv kev tsim thiab xaiv cov twj paj nruag, feem ntau muaj qee lub sijhawm uas cov khoom siv ntsuas qhov sib txawv ntawm cov khoom siv yeeb nkab, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias ua haujlwm, tshwj xeeb yuav tsum tau them nyiaj rau seb qhov ntsuas cov khoom xaiv tau raws li qhov ntsuas kub thiab qhov tsim ntawm lub siab. txheej txheem cov khoom siv lossis cov kav dej. Piv txwv li, cov yeeb nkab yog kub chromium molybdenum hlau, thaum ntsuas yog stainless hlau. Hauv qhov no, cov teeb meem yuav tshwm sim, thiab koj yuav tsum sab laj nrog qhov ntsuas kub thiab ntsuas ntawm cov khoom siv.
Nyob rau hauv tus txheej txheem ntawm kev ntsuas tsim thiab hom xaiv, peb feem ntau ntsib stainless hlau ntawm txawv tshuab, series thiab hom. Thaum xaiv hom, peb yuav tsum xav txog cov teeb meem los ntawm ntau qhov kev pom xws li cov txheej txheem tshwj xeeb tshaj tawm, qhov kub thiab txias, qhov siab, qhov siab, qhov siab, corrosion thiab nqi.
Post lub sij hawm: Oct-17-2022