304 simbi isina tsvina giredhi: 0Cr18Ni9 (0Cr19Ni9) 06Cr19Ni9 S30408
Kemikari yakagadzirwa: 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 inonyanya kushingirira uye 304L ine kabhoni shoma.
304 inoshandiswa zvakanyanya, ine yakanaka corrosion resistance, kupisa kupisa, kuderera kwekushisa kwesimba uye michina yemagetsi; yakanaka inopisa kushanda senge kutsika uye kukotama, uye hapana kupisa kurapwa kuomesa chiitiko (kwete-magnetic, tembiricha yebasa -196 ° C ~ 800 ° C).
304L ine yakanakisa kuramba kune zviyo muganho corrosion mushure mekudzikisira kana kushushikana kunetseka; inogona zvakare kuchengetedza kunaka kwekusagadzikana pasina kupisa kupisa, uye tembiricha yebasa iri -196°C-800°C.

basic situation:

Zvinoenderana neyakagadzirwa nzira, inogona kukamurwa kuita mhando mbiri: inopisa kukungurutswa uye kutonhora kukunguruka, uye inogona kukamurwa kuita 5 mhando zvichienderana nemaitiro emhando yesimbi mhando: austenitic mhando, austenite-ferritic mhando, ferritic mhando, martensitic mhando, uye kunaya kwemvura kuomesa mhando. Zvinodiwa kuti ugone kumira nekuora kweasidhi dzakasiyana-siyana dzakadai se oxalic acid, sulfuric acid-ferric sulfate, nitric acid, nitric acid-hydrofluoric acid, sulfuric acid-copper sulfate, phosphoric acid, formic acid, acetic acid, etc. Inoshandiswa zvakanyanya mumakemikari indasitiri, chikafu, mishonga, petromic simba, nezvimwewo. kuvaka, midziyo yekicheni, tableware, motokari, zvikamu zvakasiyana-siyana zvemidziyo yemumba.
Iyo ndiro yesimbi isina tsvina ine nzvimbo yakatsetseka, yakakwira plastiki, kuoma uye kusimba kwemagetsi, uye inoshingirira mukuora nemaasidhi, alkaline magasi, mhinduro uye mamwe midhiya. Isimbi ine alloy isiri nyore kuita ngura, asi haina kana ngura zvachose.
Stainless simbi ndiro Maererano nenzira yekugadzira, inogona kupatsanurwa mumhando mbiri: inopisa kukunguruka uye kutonhora kukunguruka, kusanganisira yakaonda inotonhora ndiro ine ukobvu hwe 0.02-4 mm uye yepakati uye gobvu ndiro ine ukobvu hwe4.5-100 mm.
Kuti ive nechokwadi chekuti michina yemagetsi senge kusimba kwegoho, kusimba kwesimba, kurebesa uye kuoma kweakasiyana-siyana mahwendefa esimbi anosangana nezvinodiwa, mahwendefa esimbi anofanirwa kurapwa kupisa senge annealing, kurapwa kwemhinduro, uye kurapwa kwekuchembera kusati kwasununguka. 05.10 88.57.29.38 zviratidzo zvakakosha
Kupokana kwekuora kwesimbi isina tsvina kunonyanya kuenderana nekuumbwa kwayo kwealloy (chromium, nickel, titanium, silicon, aluminium, nezvimwewo) uye chimiro chemukati, uye basa guru chromium. Chromium ine kugadzikana kwemakemikari epamusoro uye inogona kugadzira firimu rekufambisa pamusoro pesimbi kuti iparadzanise simbi kubva kunze kwenyika, kudzivirira ndiro yesimbi kubva muoxidation, uye kuwedzera kusimba kwekuora kwesimbi ndiro. Mushure mekunge iyo passivation firimu yaparadzwa, iyo corrosion resistance inoderera.

National standard nature:

Kusimba kwesimba (Mpa) 520
Goho simba (Mpa) 205-210
Elongation (%) 40%
Kuoma HB187 HRB90 HV200
Kuwanda kwe304 simbi isina tsvina ndeye 7.93 g/cm3. Austenitic Stainless simbi inowanzo shandisa kukosha uku. 304 chromium content (%) 17.00-19.00, nickel content (%) 8.00-10.00, 304 yakaenzana nenyika yangu 0Cr19Ni9 (0Cr18Ni9) simbi isina tsvina
304 Stainless simbi isimbi isina simbi, uye mashandiro ayo ekudzivirira ngura akasimba kupfuura ayo emazana maviri akatevedzana masimbi asina tsvina. High tembiricha kuramba iri nani.
304 simbi isina tsvina ine yakanakisa stainless corrosion kuramba uye kuramba kuri nani kune intergranular corrosion.
Kune oxidizing acids, inopedzwa mukuedza kuti 304 simbi isina tsvina ine yakasimba corrosion resistance mu nitric acid iri pasi pekushisa kwekushisa ne ≤65%. Iyo zvakare ine yakanaka corrosion kuramba kune alkaline mhinduro uye yakawanda organic uye inorganic acids.

general maitiro:

304 Stainless simbi ndiro ine yakanaka pamusoro uye akasiyana-siyana ekushandisa
Good corrosion resistance, zvirinani kusaita ngura pane zvakajairika simbi
Simba rakakwirira, saka mukana wekushandisa ndiro yakatetepa yakakura
Kudzivirira kune yakanyanya tembiricha oxidation uye simba rakawanda, nekudaro kurwisa moto
Normal tembiricha processing, kureva, nyore epurasitiki kugadzirisa
Kugadzirisa kuri nyore uye kuri nyore nekuti hapana kurapwa kwepamusoro kunodiwa
kwakachena, kupedzisa kwepamusoro
Good welding performance

Kudhirowa kuita
1，Dry grinding brushed
Iyo inonyanya kuzivikanwa pamusika iwaya refu uye waya pfupi. Mushure mekugadzirisa nzvimbo yakadaro, 304 simbi isina tsvina ndiro inoratidza yakanaka yekushongedza mhedzisiro, iyo inogona kusangana nezvinodiwa zveyakajairwa yekushongedza zvinhu. Kazhinji kutaura, 304 yakatevedzana simbi isina tsvina inogona kuumba yakanaka mhedzisiro mushure mekukwesha kumwe. Nekuda kwemutengo wakaderera, kushanda kuri nyore, mutengo wakaderera wekugadzirisa uye kushandiswa kwakakura kwemhando iyi yemidziyo yekugadzirisa, yave mudziyo unodiwa wekugadzirisa nzvimbo. Naizvozvo, mazhinji machining nzvimbo anogona kupa refu-waya uye pfupi-waya frosted mahwendefa, iyo 304 simbi nhoroondo anopfuura 80%.
2, kudhirowa kwemafuta
Iyo 304 mhuri yesimbi isina tsvina inoratidza yakakwana yekushongedza mhedzisiro mushure mekukuya kwemafuta, uye inoshandiswa zvakanyanya mumapanera ekushongedza akadai semaelevator uye midziyo yemumba. Cold-akakungurutswa 304 akatevedzana Stainless simbi inogona kazhinji kuwana mibairo yakanaka mushure meimwe frosting pass. Kuchine dzimwe nzvimbo dzekugadzira pamusika dzinogona kupa chando chemafuta kune inopisa-yakakungurutswa simbi isina tsvina, uye mhedzisiro yayo inofananidzwa neinotonhora-yakakungurutswa yemafuta ekukuya. Kudhirowa kwemafuta kunogona zvakare kukamurwa kuita filament refu uye pfupi filament. Filament inowanzo shandiswa pakushongedza elevator, uye kune marudzi maviri ezvimiro zvemidziyo midiki yemumba nemidziyo yemukicheni.
Kusiyana kubva ku316
Iwo maviri anonyanya kushandiswa simbi isina tsvina 304 uye 316 (kana zvinoenderana neGerman / European mwero 1.4308, 1.4408), mutsauko mukuru mukuumbwa kwekemikari pakati pe316 ne304 ndewekuti 316 ine Mo, uye inowanzo zivikanwa kuti 316 ine zvirinani kuomarara. Iyo inodzivirira kupisa kupfuura 304 munzvimbo yakakwirira yekupisa. Naizvozvo, munzvimbo dzekupisa kwakanyanya, mainjiniya anowanzo sarudza zvikamu zvakagadzirwa ne316 zvinhu. Asi iyo inonzi "hapana chinhu" ndeye mhedziso, munzvimbo yakanyanyisa sulfuric acid, usashandise 316 pasinei nokuti kutonhora kwakakwirira sei! Zvikasadaro, nyaya iyi inogona kuva hombe. Chero ani anodzidza mechanics akadzidza tambo, uye yeuka kuti kuitira kudzivirira tambo kuti dzisabatwa pakupisa kwakanyanya, yakasviba yakasviba lubricant inoda kuiswa: molybdenum disulfide (MoS2), kubva iyo 2 mapoinzi anotorwa Mhedziso haisi: [1] Mo ichokwadi inodzivirira tembiricha inodzivirira (unoziva here kuti crucible inoshandiswa kunyungudusa goridhe). [2]: Molybdenum inopindirana zviri nyore neayoni akakwirira-valent sarufa kuita sulfide. Saka hapana kana imwe mhando yesimbi isina simbi isingakundike uye isingadziviriri kukungura. Mukuongorora kwekupedzisira, simbi isina tsvina ichidimbu chesimbi ine tsvina yakawanda (asi izvi zvinosvibisa zvinonyanya kusagadzikana kupfuura simbi ^ ^), uye simbi inogona kuita nezvimwe zvinhu.

Surface Quality Inspection:

Hunhu hwepamusoro hwe304 simbi isina tsvina inonyanya kutsanangurwa neiyo pickling process mushure mekupisa kupisa. Kana iyo yepamusoro oxide ganda rakaumbwa neyakapfuura kupisa kupisa maitiro akakora kana chimiro chisina kuenzana, pickling haigone kuvandudza kupera kwepamusoro uye kufanana. Nokudaro, kunyatsoteerera kunofanira kubhadharwa kune kupisa kwekupisa kwekupisa kana kuchenesa kwepamusoro kusati kwaitwa kupisa.
Kana iyo yepamusoro oxide ukobvu hwesimbi isina simbi isina yunifomu, kushata kwepamusoro kwesimbi yepasi pasi penzvimbo yakakora uye nzvimbo yakatetepa zvakare yakasiyana. Yakasiyana, saka pamusoro pesimbi yesimbi haina kuenzana. Naizvozvo, zvinodikanwa kuita zvakafanana kuumba zviyero zveoxide panguva yekupisa nekupisa. Kuzadzisa ichi chinodiwa, kutarisisa kunofanirwa kubhadharwa kune zvinotevera nyaya:
Kana oiri yakanamirwa pamusoro peiyo workpiece kana simbi isina tsvina inopisa, ukobvu uye kuumbwa kweiyo oxide chiyero pamafuta-yakanamatira chikamu ichave yakasiyana nehupamhi uye kuumbwa kweiyo oxide scale kune dzimwe nzvimbo, uye carburization ichaitika. Iyo carburized chikamu chesimbi yepasi pasi peganda re oxide icharwiswa zvakanyanya neasidhi. Madonhwe emafuta akapfapfaidzwa neanorema mafuta anopisa panguva yekupisa kwekutanga achavewo nekukanganisa kukuru kana akabatanidzwa kune workpiece. Inogona zvakare kuve nemhedzisiro kana zvigunwe zvemushandisi zvakabatanidzwa kune workpiece. Nokudaro, mufambisi haafaniri kubata zvakananga zvikamu zvesimbi zvisina tsvina nemaoko ake, uye usabvumira kuti workpiece yakasvibiswa nemafuta matsva. Magirovhosi akachena anofanira kupfekwa.
Kana paine mafuta ekuzora anonamirwa pamusoro peiyo workpiece panguva yekutonhora kugadziridzwa, inofanira kunge yakanyatso degreased mu trichlorethylene degreasing agent uye caustic soda solution, wobva wacheneswa nemvura inodziya, wobva wabatwa nekupisa.
Kana pane kusvibiswa pamusoro peplate yesimbi isina tsvina, kunyanya kana organic matter kana madota akasungirirwa kune workpiece, kupisa kuchakanganisa chiyero.
Misiyano mumhepo muchoto chesimbi isina tsvina Mhepo iri muchoto yakasiyana mune imwe neimwe chikamu, uye kuumbwa kweganda reoxide kuchachinjawo, icho chiriwo chikonzero chekusaenzana mushure mekunhonga. Nokudaro, pakupisa, mhepo iri muchikamu chimwe nechimwe chevira inofanira kunge yakafanana. Kuti izvi zviitike, kutenderera kwemhepo kunofanirawo kutariswa.

Mukuwedzera, kana zvidhinha, asbestos, nezvimwewo zvinoumba chikuva chinoshandiswa kupisa workpiece chine mvura, mvura inoputika kana ichipisa, uye mhepo yechikamu chakananga kusangana nemhute yemvura ichave yakasiyana kubva kune dzimwe nzvimbo. zvakasiyana chete. Naizvozvo, zvinhu zvinosangana zvakananga neyakapisa workpiece inofanira kuomeswa zvizere isati yashandiswa. Nekudaro, kana ikaiswa pakamuri tembiricha mushure mekuoma, hunyoro hucharamba huchidzika pamusoro peiyo workpiece pasi pemamiriro ehunyoro. Saka, zviri nani kuiomesa isati yashandiswa.
Kana chikamu chendiro yesimbi isina tsvina inofanira kurapwa iine chiyero chakasara chisati chapisa kupisa, pachava nemisiyano mukukora uye kuumbwa kwechiyero pakati pechikamu nechiyero chakasara uye chikamu chisina chiyero mushure mekupisa, zvichikonzera kusaenzana kwepamusoro mushure mekutora , saka hatifaniri kungoteerera kune yekupedzisira kupisa kwekupisa, asi tinofanirawo kunyatsoteerera kune yepakati kupisa kurapwa uye pickling.
Pane mutsauko muchiyero che oxide chinogadzirwa pamusoro pesimbi isina tsvina iyo yakanangana negasi kana mafuta emurazvo uye nzvimbo isingabatanidzike. Nokudaro, zvakakosha kuchengetedza chidimbu chekurapa kubva pakubata zvakananga nemuromo wemoto panguva yekupisa.
Mhedzisiro yekusiyana kwepamusoro kupera kwesimbi isina tsvina ndiro
Kana kupera kwepamusoro kwakasiyana, kunyange kana kuchipisa panguva imwe chete, zviyero zveoxyde pamativi akaoma uye akanaka epamusoro achave akasiyana. Semuenzaniso, munzvimbo iyo nzvimbo yakasvibiswa yakacheneswa uye nzvimbo iyo isina kucheneswa, mamiriro ekugadzira oxide ganda akasiyana, saka pamusoro peiyo workpiece mushure mekunhonga haina kuenzana.

Kupisa kwese kuchinjisa coefficient yesimbi kunoenderana nezvimwe zvinhu kunze kwekupisa kwekupisa kwesimbi. Muzviitiko zvakawanda, kupisa kunopisa coefficient yefirimu, chiyero uye chimiro chepamusoro chesimbi. Simbi isina simbi inochengeta nzvimbo yakachena, saka inofambisa kupisa zviri nani pane mamwe simbi ane yepamusoro yekupisa conductivity. Liaocheng Suntory Stainless Steel inopa 8. Mitemo yeunyanzvi yesimbi isina tsvina Mahwendefa e-stainless simbi ane simba rakanakisisa rekudzivirira, kuita kwekukotama, kuoma kwezvikamu zvakashongedzwa, uye kutsika kwemaitiro ezvikamu zvakashongedzwa uye nzira dzavo dzekugadzira. Kunyanya, C: 0.02% kana pasi, N: 0.02% kana pasi, Cr: 11% kana kupfuura uye pasi pe17%, zvakakodzera zvinyorwa zveSi, Mn, P, S, Al, Ni, uye zvinogutsa 12≤Cr Mo 1.5Si≤ 17. Isimbi yesimbi isina tsvina ine 30≤NM 30(NM) Cu)≤4, Cr 0.5(Ni Cu) 3.3Mo≥16.0, 0.006≤CN≤0.030 inopisa kusvika 850～1250°C, yozoitwa pa1°C/s Kurapa kwekupisa kwekutonhodza pamusoro pekutonhora. Neiyi nzira, inogona kuve yakasimba-yakasimba simbi ndiro ine chimiro chine inodarika 12% martensite nehuwandu, simba rakakwirira pamusoro pe730MPa, kushora uye kuita kwekukotama, uye kusimba kwakanyanya munzvimbo inokanganisa kupisa-kupisa. Kushandisazve Mo, B, nezvimwe zvinogona kuvandudza zvakanyanya kuita kwekutsika kwechikamu chakasungwa. Murazvo weokisijeni uye gasi haugone kucheka ndiro yesimbi isina simbi nekuti simbi isina tsvina haisi nyore kuve oxidized. 5CM gobvu ndiro yesimbi isina tsvina inofanira kugadziriswa nemidziyo yakakosha yekucheka, yakadai se: (1) Laser Cutting machine ine wattage yakakura (laser cutting machine) (2) Oil pressure saw machine (3) Grinding disc (4) Human hand saw (5) Wire Cutting machine (waya yekucheka muchina). (6) High-pressure yemvura jet kucheka (nyanzvi yekucheka jet yemvura: Shanghai Xinwei) (7) Plasma arc kucheka