304 Stainless Simbi

304 Stainless simbi igiredhi resimbi isina tsvina inogadzirwa zvinoenderana neAmerican ASTM standard. Pakati pezvinhu zvese zvesimbi isina tsvina, 304 simbi isina simbi ndiyo inenge yakajairika giredhi. Kuwanda kwe304 simbi isina tsvina ndeye 7.93 g/cm³. Iro zita rehunyanzvi re304 simbi isina tsvina inonziwo 18/8 simbi isina tsvina, nekuti ine zvinopfuura 18% chromium uye inopfuura 8% nickel. 304 Stainless simbi inoshingirira pakupisa kwepamusoro (kusvika 800 ℃), uye ine hunhu hwekuita kwakanaka kwekugadzirisa uye kuomarara kwepamusoro. Inoshandiswa zvakanyanya muindasitiri, fenicha yekushongedza indasitiri uye chikafu uye indasitiri yekurapa. Muchiyero cheASTM A351, CF8 ndiyo yakaenzana ne304 simbi isina tsvina.

 

Chinese Name	304不锈钢/06Cr19Ni10 (GB/T 3280-2015)	Main Alloy Elements	Ndi, Mo
Shona Name	AISI 304 Stainless Steel, AISI 304 SS	Magnetic Performance	Magineti asina simba, mushure mekutonhora kushanda sekutambanudza kana kutsika, iyo magineti inosimba (inogona kukwezvwa nemagineti)
Mamwe Mazita	SUS 304 SS (JIS G4303) kana 18-8 SS	Hunhu	Corrosion resistance (isina kudzivirirwa zvachose kune corrosion), yakakwirira tembiricha kuramba, kunaka kuoma
Metallographic Structure	Austenite

 

Izvo zvinofanirwa kucherechedzwa kuti chikafu-giredhi 304 simbi isina tsvina ine yakasimba zviratidzi zvemukati pane zvakajairwa 304 simbi isina tsvina. Semuenzaniso: tsananguro yepasi rese ye304 simbi isina tsvina ndeye 18% -20% yechromium uye 8% -10% nickel, asi chikafu-giredhi 304 simbi isina tsvina i18% yechromium uye 8% nickel, inotenderwa. chinja-chinja mukati mehumwe danho, uye Dzimisa zviri mukati memhando dzakasiyana siyana dzesimbi. Mune mamwe mazwi, 304 simbi isina tsvina haisati iri chikafu giredhi 304 simbi isina tsvina.

Nzira dzakajairwa dzekunyora pamusika dzinosanganisira 06Cr19Ni10 uye SUS 304, iyo 06Cr19Ni10 inowanzoreva kugadzirwa kwenyika (GB/T 3280-2015), AISI 304 kazhinji inoreva ASTM kugadzirwa, uye SUS 304 inoreva kugadzirwa kwechiJapan.

304 chinangwa chakajairwa Stainless simbi iyo inoshandiswa zvakanyanya kugadzira michina uye zvikamu zvinoda musanganiswa wakanaka wezvivakwa (corrosion resistance uye formability). Kuti irambe ichidzivirirwa negora, inofanirwa kunge iine zvinopfuura 18% chromium uye inodarika 8% nickel.

IAmerican Iron and Steel Institute inoshandisa manhamba matatu kuratidza akasiyana siyana magiredhi esimbi isingagadzirike. mu:
1. Austenitic simbi isina tsvina inosarudzwa nenhamba mu200 uye 300 series. Semuenzaniso, mamwe emamwe akajairika austenitic simbi isina tsvina anosarudzwa ne201, 304, 316 uye 310.
2. Ferritic uye martensitic tsvina isina tsvina inomiririrwa ne400 series manhamba.
3. Ferritic simbi isina tsvina inomiririrwa ne430 uye 446. Martensitic tsvina isina tsvina inomiririrwa ne410, 420 uye 440C. ,
4. Duplex (austenitic-ferritic) simbi isina tsvina, kunaya kunoomesa simbi isina tsvina, uye alloys akakwirira ane isingasviki 50% iron inowanzosarudzwa nemazita evaridzi kana ekutengeserana.

Kune 304 simbi isina tsvina, iyo Ni element mukuumbwa kwayo yakakosha zvikuru, iyo inonyatso tarisa kushorwa kwe304 simbi isina tsvina uye kukosha kwayo. Zvinhu zvakanyanya kukosha mu304 ndiNi uye Cr, asi hazvigumiri pazvinhu zviviri izvi. Zvakananga zvinodiwa zvinotsanangurwa nezviyero zvechigadzirwa. Mutongo wakajairika muindasitiri ndewekuti chero bedzi iyo Ni yemukati yakakura kupfuura 8% uye iyo Cr yemukati yakakura kupfuura 18%, inogona kutorwa se304 simbi isina tsvina. Ichi ndicho chikonzero iyo indasitiri inodaidza rudzi urwu rwesimbi isina tsvina 18/8 simbi isina tsvina. Muchokwadi, iwo akakodzera zvigadzirwa zviyero zvine akajeka mirau ye304, uye aya zvigadzirwa zviyero zvine mimwe misiyano yemhando dzakasiyana dzesimbi isina tsvina. Pazasi pane zvakajairika zvigadzirwa zviyero uye bvunzo. Kuti uone kana chinhu chiri 304 simbi isina tsvina, inofanirwa kusangana nezvinodiwa zvechimwe nechimwe chinhu muyero yechigadzirwa. Chero bedzi munhu asingasviki zvinodiwa, haigoni kunzi 304 simbi isina tsvina.

 

Kemikari Inoumbwa ye304 Stainless Simbi Zvinoenderana neASTM A276
304 SS	C	Mn	P	S	Si	Cr	Ni
%	≤0.08	≤2.00	≤0.045	≤0.030	≤1.00	18.0–20.0	8.0-11.0
Kemikari Inoumbwa ye304 Stainless Simbi Zvinoenderana neASTM A240
304 SS	C	Mn	P	S	Si	Cr	Ni
%	≤0.07	≤2.00	≤0.045	≤0.030	≤0.75	17.5–19.5	8.0–10.5
Kemikari Inoumbwa ye304 Stainless Simbi Zvinoenderana neJIS G4303
SUS 304 SS	C	Mn	P	S	Si	Cr	Ni
%	≤0.08	≤2.00	≤0.045	≤0.030	≤1.00	18.0–20.0	8.0-10.5

 

Zvishandiso zve304 Stainless Steel

304 simbi isina tsvina ndiyo inonyanya kushandiswa chromium-nickel simbi isina tsvina. Sesimbi inoshandiswa nevakawanda, ine yakanaka corrosion resistance, heat resistance, yakaderera tembiricha simba uye mechanical properties; yakanaka inopisa kushanda senge kutsika uye kukotama, hapana kupisa kurapwa Kuomesa chiitiko (kushandisa tembiricha -196℃～800℃). Corrosion resistance mumhepo, kana iri mhepo yeindasitiri kana nzvimbo yakasvibiswa zvakanyanya, inoda kucheneswa nenguva kuti isaora. Inokodzera kugadzira chikafu, kuchengetedza uye kutakura. Iine yakanaka processability uye weldability. Plate heat exchanger, mabhero, zvigadzirwa zvemumba (Kirasi 1 uye 2 tableware, makabati, mapaipi emukati, maheater emvura, boilers, mabhavhu), zvikamu zvemotokari (windshield wiper, mufflers, zvigadzirwa zvakaumbwa), midziyo yekurapa, zvekuvakisa, makemikari, indasitiri yechikafu. , kurima, zvikamu zvengarava, nezvimwe. Iyo 304 simbi isina tsvina ine zvinyorwa zvakanyatsodzorwa zvinogona kunziwo chikafu giredhi 304 isina tsvina. simbi.

Zvizhinji zvezvinodiwa zvekushandisa ndezvekuchengetedza kutaridzika kwekutanga kwechivako kwenguva yakareba. Pakusarudza rudzi rwesimbi isina tsvina yekusarudza, zvinonyanya kutariswa ndezvipimo zvinodikanwa zvekunaka, kuora kwemhepo yenzvimbo, uye hurongwa hwekuchenesa huchashandiswa. Nekudaro, mamwe maapplication ari kuramba achitsvaga chete kurongeka kwechimiro kana kusamira kwemvura. Semuenzaniso, matenga uye madziro emadziro ezvivakwa zveindasitiri. Muzvikumbiro izvi, mutengo wekuvaka wemuridzi ungave wakakosha kupfuura aesthetics, uye pamusoro haina kuchena zvakanyanya. 304 simbi isina tsvina inoshanda zvine musoro munzvimbo dzakaoma dzemukati. Nekudaro, kuchengetedza kutaridzika kwayo kunze mumaruwa nemumaguta, kucheneswa nguva nenguva kunodiwa. Munzvimbo dzakasvibiswa zvikuru dzeindasitiri nedzemumhenderekedzo yegungwa, nzvimbo yacho inogona kuva yakasviba zvikuru kana kuita ngura.

Nekudaro, kune inoyevedza mhedzisiro munzvimbo yekunze, nickel-ine simbi isina tsvina inodiwa. Nokudaro, 304 simbi isina tsvina inoshandiswa zvakanyanya mumadziro emaketeni, madziro emadziro, matenga uye zvimwe zvinangwa zvekuvaka, asi mumhepo inoparadza zvakanyanya mumaindasitiri kana mugungwa, 316 simbi isina tsvina inosarudzwa. Stainless simbi inotsvedza magonhi, vanhu vakanyatsoona zvakanakira kushandisa Stainless simbi mune zvimiro zvekushandisa. 304 uye 316 simbi isina tsvina inosanganisirwa mune akati wandei dhizaini dhizaini. Nekuda kwekuti "duplex" simbi isina simbi 2205 inosanganisa kunaka kwemuchadenga kusagadzikana nekusimba kwepamusoro uye kusimba kwesimba, simbi iyi inosanganisirwawo muEuropean nhungamiro. Product Shapes Stainless simbi inogadzirwa muhuwandu hwakazara hwemasimbi maumbirwo uye saizi, uye akawanda akakosha maumbirwo aripo zvakare. Zvigadzirwa zvinonyanya kushandiswa zvinogadzirwa kubva pashizha uye tambo, asiwo zvakakosha zvigadzirwa zvinogadzirwa kubva pakati uye zvinorema mahwendefa, semuenzaniso, mukugadzirwa kweanopisa-akakunguruswa simbi yekugadzira uye extruded simbi yekugadzira. Kune zvakare akatenderera, ovha, sikweya, rectangular uye hexagonal welded kana musono pombi uye mamwe mafomu, kusanganisira profiles, mabara, waya uye castings.

 

Zvenyama Zvivakwa zve304 Stainless Simbi		Machanical Properties ye304 Stainless Simbi
Density (20 ℃, g/cm³)	7.93	Tensile Strentgh σb (MPa)	≥515-1035
Melting Temperature (℃)	1398 - 1454	Yield Strentgh σ0.2 (MPa)	≥205
Chaiyo Heat Capacity (0~100℃, KJ·kg-1K-1)	0.5	Elongation δ5 (%)	≥40
Thermal Conductivity (W·m-1·K-1)	(100℃)16.3, (500℃)21.5	chiyero chekuderedza munzvimbo ψ (%)	40 - 60
Coefficient of Linear Expansion (10-6·K-1)	(0-100℃)17.2, (0-500℃)18.4	Kuoma	≤201HBW;≤92HRB;≤210HV
Resistivity (20 ℃, 10-6Ω · m2/m)	0.73
Longitudinal Elastic Modulus (20 ℃, KN/mm2)	193

 

Zvikonzero zvekuora kwe304 simbi isina tsvina

Iyo ngura chiitiko che304 simbi isina tsvina inogona kuva nezvikonzero zvinotevera:

1. Chloride
Chloride ions iripo zvakanyanya, semunyu / ziya / mvura yegungwa / mhepo yegungwa / ivhu zvichingodaro. Pamberi pe chloride ions, simbi isina tsvina inoora nekukurumidza, kunyange kupfuura yakajairwa yakaderera kabhoni simbi. Nokudaro, pane zvinodiwa zvekushandiswa kwenzvimbo yesimbi isina tsvina, uye inoda kupukuta kakawanda kubvisa guruva uye kuichengeta yakachena uye yakaoma. Kune muenzaniso muUnited States: kambani inoshandisa chigadziko chemuoki kubata mushonga une chloride ions. Chigaba chacho chave chichishandiswa kwemakore anoda kusvika zana. Yakanga yakarongwa kutsiviwa muma1990. Nekuti muouki hausi wemazuva ano zvakakwana, mudziyo wesimbi usina tsvina wakashandiswa kwemazuva gumi nematanhatu mushure mekutsiviwa. Kudonha nekuda kwekuora.

2. Solution kurapwa
Alloy zvinhu hazvina kunyungudika mune matrix, zvichikonzera yakaderera alloy yemukati mune matrix chimiro uye kushomeka kwekushomeka.

3. Intergranular corrosion
Iyi titanium- uye niobium-isina zvinhu zvinowanzoita intergranular corrosion. Kuwedzerwa kwetitanium uye niobium, pamwe chete nekudzikamisa kurapwa, kunogona kuderedza intergranular corrosion. Simbi yakakwira-alloy inokwanisa kuramba kukoromoka mumhepo kana muchemidhiya inoparadza midhiya. Simbi isina tsvina ine nzvimbo yakanaka uye yakanaka inodzivirira ngura. Iyo haidi kurapwa pamusoro senge color plating, asi pachinzvimbo ichi inoshandisa inherent pamusoro zvimiro zvesimbi isina tsvina. Inoshandiswa mune dzakawanda A mhando yesimbi, inowanzonzi simbi isina tsvina. Mumiririri wekuita ndeyepamusoro alloy simbi yakadai se 13 chrome simbi uye 18-8 chrome nickel simbi. Kubva pakuona kwe metallographic, nokuti simbi isina tsvina ine chromium, firimu yekromium yakaonda kwazvo inoumbwa pamusoro, iyo inoparadzanisa okisijeni kubva musimbi uye inoita basa mukudzivisa kuora. Kuti uchengetedze humiro hwekuonda kwesimbi isina tsvina, simbi yacho inofanirwa kunge iine zvinopfuura 12% chromium. Kwenguva apo welding inodiwa. Iyo yakaderera kabhoni yemukati inoderedza kunaya kwecarbide munzvimbo yakakanganiswa nekupisa pedyo neweld, izvo zvinogona kutungamirira kune intergranular corrosion (weld erosion) yesimbi isina tsvina mune dzimwe nharaunda.