304 stainless hlau qib: 0Cr18Ni9 (0Cr19Ni9) 06Cr19Ni9 S30408
Cov tshuaj muaj pes tsawg leeg: C: ≤0.08, Si: ≤1.0 Mn: ≤2.0, Cr: 18.0～20.0, Ni: 8.0～10.5, S: ≤0.03, P: ≤0.035 N≤0.1.
304L yog ntau corrosion resistant thiab 304L muaj tsawg carbon.
304 yog dav siv, nrog zoo corrosion kuj, tshav kub tsis kam, kub tsis tshua muaj zog thiab txhua yam khoom; Kev ua haujlwm kub zoo xws li stamping thiab dabtsi yog khoov, thiab tsis muaj kev kho cua sov ua kom muaj zog (tsis yog hlau nplaum, kev pabcuam kub -196 ° C ~ 800 ° C).
304L muaj kev tiv thaiv zoo rau cov qoob loo ciam teb tom qab vuam lossis kev ntxhov siab; Nws tuaj yeem tswj tau zoo corrosion tsis muaj kev kho cua sov, thiab kev pabcuam kub yog -196 ° C-800 ° C.

Qhov xwm txheej yooj yim:

Raws li txoj kev tsim khoom, nws tuaj yeem muab faib ua ob hom: kub dov thiab txias dov, thiab tuaj yeem muab faib ua 5 hom raws li cov yam ntxwv ntawm cov hlau: hom austenitic, austenite-ferritic hom, ferritic hom, martensitic hom, thiab nag lossis daus hardening hom. Nws yuav tsum muaj peev xwm tiv taus corrosion ntawm ntau yam acids xws li oxalic acid, sulfuric acid-ferric sulfate, nitric acid, nitric acid-hydrofluoric acid, sulfuric acid-copper sulfate, phosphoric acid, formic acid, acetic acid, thiab lwm yam Nws yog dav siv nyob rau hauv chemical kev lag luam, khoom noj khoom haus, tshuaj, papermaking, chav ua noj, petroleum, thiab lwm yam. cov tais diav, tais diav, tsheb, ntau yam khoom siv hauv tsev.
Stainless hlau phaj muaj ib tug du nto, siab plasticity, toughness thiab mechanical zog, thiab yog resistant rau corrosion los ntawm acids, alkaline gases, kev daws teeb meem thiab lwm yam xov xwm. Nws yog cov hlau alloy uas tsis yooj yim rau xeb, tab sis nws tsis yog xeb-dawb kiag li.
Stainless hlau phaj Raws li txoj kev tsim khoom, nws tuaj yeem muab faib ua ob hom: kub dov thiab txias dov, nrog rau nyias txias phaj nrog lub thickness ntawm 0.02-4 hli thiab nruab nrab thiab tuab phaj nrog lub thickness ntawm 4.5-100 hli.
Txhawm rau kom ntseeg tau tias cov khoom siv hluav taws xob xws li lub zog tawm los, lub zog tensile, elongation thiab hardness ntawm ntau yam stainless hlau daim hlau ua tau raws li qhov yuav tsum tau ua, cov hlau phaj yuav tsum tau kho cua sov xws li annealing, kev kho mob, thiab kev laus kho ua ntej xa khoom. 05.10 88.57.29.38 cov cim tshwj xeeb
Kev tiv thaiv corrosion ntawm stainless hlau tsuas yog nyob ntawm nws cov alloy muaj pes tsawg leeg (chromium, nickel, titanium, silicon, aluminium, thiab lwm yam) thiab cov qauv sab hauv, thiab lub luag haujlwm tseem ceeb yog chromium. Chromium muaj cov tshuaj lom neeg ruaj khov thiab tuaj yeem tsim cov yeeb yaj kiab passivation ntawm cov hlau nto kom cais cov hlau los ntawm lub ntiaj teb sab nraud, tiv thaiv cov phaj hlau los ntawm oxidation, thiab ua kom cov hlau tsis kam tiv thaiv corrosion. Tom qab cov zaj duab xis passivation raug rhuav tshem, qhov corrosion kuj txo.

National standard xwm:

Tensile zog (Mpa) 520
Yield zog (Mpa) 205-210
Elongation (%) 40%
Hardness HB187 HRB90 HV200
Qhov ceev ntawm 304 stainless hlau yog 7.93 g / cm3. Austenitic stainless hlau feem ntau siv cov nqi no. 304 chromium cov ntsiab lus (%) 17.00-19.00, nickel cov ntsiab lus (%) 8.00-10.00, 304 yog sib npaug rau kuv lub teb chaws 0Cr19Ni9 (0Cr18Ni9) stainless hlau
304 stainless hlau yog cov khoom siv stainless hlau ntau yam, thiab nws cov kev ua haujlwm tiv thaiv xeb muaj zog dua li ntawm 200 series stainless hlau cov ntaub ntawv. Kub kub kuj tseem zoo dua.
304 stainless hlau muaj zoo heev stainless corrosion kuj thiab zoo kuj rau intergranular corrosion.
Rau oxidizing acids, nws tau xaus rau hauv kev sim uas 304 stainless hlau muaj zog corrosion kuj nyob rau hauv nitric acid hauv qab kub kub nrog ib tug concentration ntawm ≤65%. Nws kuj muaj qhov zoo corrosion kuj rau alkaline daws thiab feem ntau cov organic thiab inorganic acids.

general yam ntxwv:

304 stainless hlau phaj muaj qhov zoo nkauj zoo nkauj thiab muaj ntau yam siv tau
Zoo corrosion kuj, zoo corrosion kuj dua li qub hlau
Lub zog siab, yog li qhov ua tau ntawm kev siv phaj nyias yog qhov zoo
Resistant mus rau kub oxidation thiab siab zog, yog li resistant rau hluav taws
Kev ua haujlwm kub li qub, uas yog, kev ua cov yas yooj yim
Kev saib xyuas yooj yim thiab yooj yim vim tsis muaj kev kho deg yuav tsum tau ua
huv, siab tiav
Kev ua haujlwm vuam zoo

Kev kos duab
1, Qhuav txhuam txhuam
Cov khoom siv tshaj plaws ntawm kev ua lag luam yog cov xaim ntev thiab cov xaim luv. Tom qab ua cov txheej txheem zoo li no, 304 stainless hlau phaj qhia tau hais tias muaj kev zoo nkauj zoo nkauj, uas tuaj yeem ua tau raws li qhov xav tau ntawm cov khoom siv kho kom zoo nkauj. Feem ntau hais lus, 304 series stainless hlau tuaj yeem tsim cov nyhuv zoo tom qab ib qho txhuam. Vim yog tus nqi qis, kev ua haujlwm yooj yim, tus nqi qis thiab kev siv dav ntawm cov khoom siv ua haujlwm no, nws tau dhau los ua cov khoom tsim nyog rau cov chaw ua haujlwm. Yog li ntawd, feem ntau cov chaw machining tuaj yeem muab cov hlau ntev thiab luv-xaim frosted daim hlau, ntawm 304 steel nyiaj rau ntau tshaj 80%.
2, roj zeb kos duab
Lub 304 tsev neeg stainless hlau qhia tau hais tias muaj kev zoo nkauj zoo nkauj tom qab cov roj sib tsoo, thiab tau siv dav hauv cov vaj huam sib luag zoo nkauj xws li elevators thiab cov khoom siv hauv tsev. Txias-dov 304 series stainless hlau feem ntau tuaj yeem ua tiav cov txiaj ntsig zoo tom qab ib qho frosting dhau. Tseem muaj qee qhov chaw ua haujlwm ntawm kev ua lag luam uas tuaj yeem muab cov roj frosting rau kub-kuav los tiag stainless hlau, thiab nws cov nyhuv yog piv rau cov roj txias-kuav los tiag sib tsoo. Kev kos duab oily kuj tuaj yeem muab faib ua cov filament ntev thiab luv filament. Filament feem ntau yog siv rau kev kho kom zoo nkauj of elevator, thiab muaj ob hom kev ntxhib los mos rau ntau yam khoom siv hauv tsev me thiab cov khoom siv hauv tsev.
Qhov sib txawv ntawm 316
Qhov ob feem ntau siv stainless hlau 304 thiab 316 (los yog sib haum rau German / European tus qauv 1.4308, 1.4408), qhov sib txawv tseem ceeb ntawm cov tshuaj muaj pes tsawg leeg ntawm 316 thiab 304 yog 316 muaj Mo, thiab nws feem ntau lees paub tias 316 muaj kev tiv thaiv corrosion zoo dua. Nws yog corrosion resistant ntau tshaj 304 nyob rau hauv kub kub ib puag ncig. Yog li ntawd, nyob rau hauv qhov kub thiab txias ib puag ncig, engineers feem ntau xaiv qhov chaw ua los ntawm 316 cov ntaub ntawv. Tab sis lub npe hu ua tsis muaj dab tsi kiag li, nyob rau hauv cov concentrated sulfuric acid ib puag ncig, tsis txhob siv 316 txawm tias kub npaum li cas! Txwv tsis pub, qhov teeb meem no yuav dhau los ua qhov loj. Tus neeg twg uas kawm txog kev siv tshuab tau kawm cov xov, thiab nco ntsoov tias txhawm rau tiv thaiv cov xov los ntawm kev ntes ntawm qhov kub thiab txias, yuav tsum tau siv cov roj pleev xim tsaus nti: molybdenum disulfide (MoS2), uas 2 lub ntsiab lus tau kos Cov lus xaus tsis yog: [1] Mo yog qhov tseeb ntawm cov khoom kub kub resistant (koj puas paub dab tsi crucible yog siv los yaj kub? Molybden). [2]: Molybdenum yooj yim reacts nrog high-valent sulfur ions los ua sulfide. Yog li tsis muaj ib hom stainless hlau uas yog super invincible thiab corrosion-resistant. Nyob rau hauv qhov kev ntsuam xyuas zaum kawg, stainless hlau yog ib daim hlau uas muaj impurities ntau dua (tab sis cov impurities no muaj corrosion-resistant ntau dua hlau ^^), thiab hlau tuaj yeem hnov ​​​​mob nrog lwm yam tshuaj.

Surface Quality Inspection:

Qhov zoo ntawm 304 stainless hlau yog txiav txim siab los ntawm cov txheej txheem pickling tom qab kev kho cua sov. Yog hais tias daim tawv nqaij oxide nto tsim los ntawm cov txheej txheem kev kho cua sov yav dhau los yog tuab los yog cov qauv tsis sib xws, pickling tsis tuaj yeem txhim kho qhov ua tiav thiab sib xws. Yog li ntawd, kev saib xyuas tag nrho yuav tsum tau them rau cov cua sov ntawm kev kho cua sov los yog kev tu saum npoo ua ntej kev kho cua sov.
Yog hais tias qhov saum npoo oxide thickness ntawm stainless hlau phaj tsis zoo ib yam, qhov roughness ntawm lub hauv paus hlau nyob rau hauv qhov chaw tuab thiab nyias qhov chaw kuj txawv. Sib txawv, yog li qhov saum npoo ntawm cov hlau phaj tsis sib xws. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum ua tib zoo tsim cov nplai oxide thaum kho cua sov thiab cua sov. Yuav kom ua tau raws li qhov yuav tsum tau ua, yuav tsum tau saib xyuas cov teeb meem hauv qab no:
Yog tias cov roj txuas rau saum npoo ntawm lub workpiece thaum lub phaj stainless hlau yog rhuab, lub thickness thiab muaj pes tsawg leeg ntawm oxide nplai ntawm cov roj txuas yuav txawv ntawm cov thickness thiab muaj pes tsawg leeg ntawm oxide nplai ntawm lwm qhov chaw, thiab carburization yuav tshwm sim. Carburized ib feem ntawm lub hauv paus hlau nyob rau hauv daim tawv nqaij oxide yuav raug mob hnyav los ntawm acid. Cov roj tso tawm los ntawm cov roj burner hnyav thaum lub sij hawm pib combustion kuj yuav muaj kev cuam tshuam loj heev yog tias lawv txuas nrog lub workpiece. Nws kuj tseem tuaj yeem ua rau muaj kev cuam tshuam thaum tus neeg teb xov tooj cov ntiv tes txuas nrog lub workpiece. Yog li ntawd, tus neeg teb xov tooj yuav tsum tsis txhob kov cov hlau stainless ncaj qha nrog nws txhais tes, thiab tsis txhob cia lub workpiece yuav stained nrog cov roj tshiab. Cov hnab looj tes huv yuav tsum hnav.
Yog hais tias muaj cov roj lubricating txuas rau saum npoo ntawm qhov chaw ua haujlwm thaum lub sijhawm ua haujlwm txias, nws yuav tsum tau degreased nyob rau hauv trichlorethylene degreasing tus neeg saib xyuas thiab caustic soda tov, ces ntxuav nrog dej sov, thiab ces kho cua sov.
Yog hais tias muaj impurities nyob rau saum npoo ntawm stainless hlau phaj, tshwj xeeb tshaj yog thaum cov organic teeb meem los yog tshauv txuas nrog rau lub workpiece, cua sov yuav yeej muaj feem xyuam rau lub teev.
Qhov sib txawv ntawm cov huab cua nyob rau hauv stainless hlau phaj rauv Qhov cua nyob rau hauv lub cub tawg yog txawv nyob rau hauv txhua qhov chaw, thiab cov tsim ntawm oxide daim tawv nqaij kuj yuav hloov, uas kuj yog vim li cas rau lub unevenness tom qab pickling. Yog li ntawd, thaum cua sov, huab cua nyob rau hauv txhua feem ntawm lub cub tawg yuav tsum yog tib yam. Rau qhov kawg no, kev ncig ntawm huab cua kuj yuav tsum tau xav txog.

Tsis tas li ntawd, yog cov cib, asbestos, thiab lwm yam uas ua rau lub platform siv los ua kom sov lub workpiece muaj dej, cov dej yuav evaporate thaum rhuab, thiab cov huab cua ntawm qhov ncaj qha nyob rau hauv kev sib cuag nrog dej vapor yuav txawv ntawm lwm qhov chaw. txawv xwb. Yog li ntawd, cov khoom uas nyob rau hauv kev sib cuag ncaj qha nrog lub rhuab workpiece yuav tsum tau tag nrho qhuav ua ntej siv. Txawm li cas los xij, yog tias nws tau muab tso rau hauv chav tsev kub tom qab ziab, noo noo yuav tseem condense rau saum npoo ntawm lub workpiece nyob rau hauv high humidity. Yog li, nws yog qhov zoo tshaj kom qhuav nws ua ntej siv.
Yog hais tias ib feem ntawm stainless hlau phaj yuav tsum tau kho muaj residual scale ua ntej kev kho cua sov, yuav muaj qhov sib txawv nyob rau hauv lub thickness thiab muaj pes tsawg leeg ntawm cov nplai ntawm ib feem nrog residual scale thiab ib feem uas tsis muaj nplai tom qab cua sov, ua rau tsis sib xws deg tom qab pickling, yog li peb yuav tsum tsis tsuas yog yuav tsum tau them sai sai mus rau qhov kawg thaum tshav kub kub kev kho mob, tab sis peb yuav tsum tau them tag nrho cov xim rau nruab nrab kub kev kho mob thiab pickling.
Muaj qhov sib txawv ntawm cov nplai oxide uas ua rau ntawm cov hlau tsis muaj steel hlau uas yog nyob rau hauv kev sib cuag ncaj qha nrog cov roj los yog roj nplaim hluav taws thiab qhov chaw uas tsis sib cuag. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum khaws cov khoom kho kom tsis txhob cuam tshuam ncaj qha rau lub qhov ncauj qhov ncauj thaum cua sov.
Cov nyhuv ntawm qhov sib txawv ntawm qhov kawg ntawm stainless hlau phaj
Yog tias qhov chaw ua tiav qhov sib txawv, txawm tias nws yog cua sov tib lub sijhawm, oxide nplai ntawm qhov ntxhib thiab zoo ntawm qhov chaw yuav txawv. Piv txwv li, nyob rau hauv qhov chaw uas lub zos tsis xws luag raug ntxuav thiab qhov chaw uas nws tsis tau ntxuav, qhov teeb meem ntawm kev tsim oxide daim tawv nqaij yog txawv, yog li ntawd lub nto ntawm lub workpiece tom qab pickling yog tsis sib xws.

Tag nrho cov tshav kub hloov pauv coefficient ntawm cov hlau nyob ntawm lwm yam ntxiv nrog rau cov thermal conductivity ntawm cov hlau. Feem ntau, lub tshav kub dissipation coefficient ntawm zaj duab xis, nplai thiab qhov chaw ntawm cov hlau. Stainless hlau ua kom lub ntsej muag huv si, yog li nws hloov cov cua sov zoo dua li lwm cov hlau uas muaj thermal conductivity ntau dua. Liaocheng Suntory Stainless Steel muab 8. Cov txheej txheem rau stainless hlau daim hlau High-strength stainless hlau daim hlau nrog zoo heev corrosion kuj, dabtsi yog khoov kev ua tau zoo, toughness ntawm welded qhov chaw, thiab stamping kev ua tau zoo ntawm welded qhov chaw thiab lawv txoj kev tsim. Tshwj xeeb, C: 0.02% lossis tsawg dua, N: 0.02% lossis tsawg dua, Cr: 11% lossis ntau dua thiab tsawg dua 17%, cov ntsiab lus tsim nyog ntawm Si, Mn, P, S, Al, Ni, thiab txaus siab 12≤Cr Mo 1.5Si≤ 17. Stainless hlau phaj nrog 1≤Ni 35 (5.MN Cr) 0. Cu) 3.3Mo≥16.0, 0.006≤CN≤0.030 yog rhuab mus rau 850 ~ 1250 ° C, thiab tom qab ntawd nqa tawm ntawm 1 ° C / s Kev kho cua sov kom txias tshaj qhov txias txias. Nyob rau hauv txoj kev no, nws tuaj yeem dhau los ua lub siab muaj zog stainless hlau phaj nrog cov qauv uas muaj ntau tshaj 12% martensite los ntawm ntim, siab zog siab tshaj 730MPa, corrosion kuj thiab dabtsi yog khoov kev ua tau zoo, thiab zoo heev toughness nyob rau hauv lub vuam kub-tsim cheeb tsam. Reusing Mo, B, thiab lwm yam tuaj yeem txhim kho qhov kev ua tau zoo ntawm qhov welded. Cov nplaim ntawm cov pa oxygen thiab roj tsis tuaj yeem txiav stainless hlau phaj vim tias stainless hlau tsis yooj yim rau oxidized. 5CM tuab stainless hlau phaj yuav tsum tau ua tiav nrog cov cuab yeej tshwj xeeb txiav, xws li: (1) Laser Tej Tshuab nrog loj wattage (laser txiav tshuab) (2) Roj siab pom tshuab (3) Sib tsoo disc (4) Tib neeg tes pom (5) Hlau txiav tshuab (hlau txiav tshuab). (6) Kev kub siab dej dav hlau txiav (kev tshaj lij dej dav hlau txiav: Shanghai Xinwei) (7) Plasma arc txiav