Duplex Stainless Steel (dSS) rudzi rwesimbi isina tsvina iyo ine zvikamu zvenguva yakareba zve ferrite neAustenite, ine chikamu chidiki kazhinji chichiita makumi matatu muzana. DSS kazhinji ine chrromium zvemukati pakati pegumi neshanu uye 28% uye nickel zvirimo pakati pe3% uye 10%. Vamwe Duplex Stainless Steels ine Alloying zvinhu zvakadai seMolybdenum (Mo), COPPER (CU), NIOBOUM (NB), Titanium (ti), uye nitrogen (Titrogen (NITLOGEN (NITLOGEN (NB)
Ichi chikamu chesimbi chinosanganisira hunhu hwezvose zviri zviviri Austenitic uye ferritic stainless mesera. Kuenzaniswa neFerritic Stainless STELS, DSS ine yakakwirira plasticity uye kuomarara, kushaya imba tembiricha yeBrittle, uye inoratidza yakavandudzwa kuyamwisa corrosance uye welDability. Panguva imwecheteyo, inochengetedza iyo 475 ° C Brittleness uye yakakwirira yekubatanidza inhatisiti yeiyo ferritic stainless mesera uye inoratidzira masheya makuru. Kuenzaniswa neAustenitic Stainless Steels, DSS ine simba rakanyanya uye zvakanyanya kupokana nekuzvidzora uye chloride kushamisika corrosion. Dss zvakare ane simba rakanyanya kudzikisira kupesana uye rinoonekwa seyakaitwa nicke-kuchengetedza simbi.
Chimiro uye mhando
Nekuda kwechimiro chayo chepakati cheAustenite uye ferrite, nechikamu chimwe nechimwe chiitiko chehafu yehari, dss inoratidza maitiro ezvese austenitic uye eryritic stainless simbi. Simba rechibereko yemakwenzi kubva ku400 MPA kusvika ku550 MPA, iyo yakapetwa kaviri yeakajaira austenitic stainless. DSS ine yakakwira, yakaderera brittle transition tembiricha, uye yakanyanya kuvandudzwa kuyamwisa corrostion kuramba uye neldingable kana ichienzanisa nemakungwa emhando dzesimba. Iyo zvakare inochengetedza imwe ferritic simbi zvivakwa, yakadai se77 Kuenzaniswa neAustenitic Stainless Netsimbe, DSS ine simba repamusoro, kunyanya rakaburitsa simba, uye rakavandudza kuramba simba, kusimbisa kuora, uye kukanganisa kuparara.
DSS can be classified into four types based on its chemical composition: Cr18, Cr23 (Mo-free), Cr22, and Cr25. Iyo cr25 mhando inogona kupatsanurwazve mu standard uye super duplex stainless simbi. Pakati peizvi, Cr22 uye cr25 mhando dzinowanzo kushandiswa. MuChina, ruzhinji rwemakwenzi emakadhi anotorwa muSweden muSweden, kusanganisira 3R3 type), saf2304 (SAF2
Mhando dzeDuplex Stainless Simbi
1. Low-Alloy mhando:Anomiririrwa neUND S.32304 (23cr-4Ni-0.1n), iyi simbi haina molybdenum uye ine kudzikisira kuenzanisa yakaenzana nhamba (pren) ye 24-25. Inogona kutsiva aisi 304 kana 316 mukushamwaridzana kupesana kudzivisa zvikumbiro.
2.Inomiririrwa neUND S31803 (22cr-5Ni-3mo-0.15n), ine preeni ye 32-33. Yayo Corrosion Rishance iri pakati peAisi 316L uye 6% mo + n Austenitic Stainless Steels.
3. Yakakwirira-Alloy mhando:Kazhinji ine 25% crwe pamwe ne molybdenum uye nitrogen, dzimwe nguva ndarira uye tungsten. Anomiririrwa neUNT S32550 (25cr-6mo-3MO-3MO-2- 2CU-0.29, ibwe iri riri nani kupokana kupfuura 22% crs dss.
4. Super Dupplex Stainless Simbi:Ine huwandu hwakanyanya hweMolybdenum uye nitrogen
Mamakisi eDuplex Stainless Simbi muChina
Iyo New Chinese Standard GB / T 20878-2007 "Stainless uye Kupisa-Kuramba Simbi mamakisi ekuti Pamusoro pezvo, inozivikanwa-inozivikanwa 2205 Duplex simbi inoenderana neiyo Chinese Giredhi 022cr23NI53N.
Hunhu hweDuplex Stainless Simbi
Nekuda kwechimiro chayo chepakati, nekudzora kwemakemikari kuumbwa uye kupisa kwekurapa maitiro, dss inosanganisa zvakanakira zvese zviri zviviri zveshuwa uye austenitic stainless. Iyo inogara nhaka yakanyanya kuomarara uye weldability yeAustenitic stainless mesera uye yakasimba simba uye chloride kusimbisa kukanganisa kwesimbi isina tsvina. Aya midziyo yepamusoro vakaita kuti DSS nekukurumidza kukudziridza sechinhu chinokonzeresa chimiro kubva kuma1980s, kuva akafanana neArtensitic, autenitic, uye fertanic isina nzizi. DSS ine maitiro anotevera:
1. Chloride kushamwaridzana kupokana kudzivisa:Molybdenum-ine DSS inoratidzira kupokana kwakanyanya kuChroride kushushikana kweCorrosion kuderera kushushikana. Nepo 18-8 Austenitic Stainless Steels inowanzo kunetseka nekushambadzira kwemamiriro ekunze
2. Pfuma Corrosion Kudzivisa:DSS ine yakanakisa kudzikisira kurwisa kupesana. Neiyo imwechete yekudzikisira yakaenzana (pre = cr%% + 3.3mo% + 16n%), DSS uye Austenitic Stainless Stecrial Inoshungurudza Posty Posscing Posscing Posscing Eppty. DSS's Pitting uye Crevice Corrosion Rishance, kunyanya mune yakakwira-chromium, nitrogen-ine marudzi, inopfuura iyo yaAidhi 316L.
3.DSS inoita zvakanaka mune dzimwe nharaunda dzinodzora, zvichiita kuti zviite kuti pombi, mavhavha, uye mimwe michina yemagetsi.
4. Mechanics Properties:DSS ine simba rakakwirira uye kupera simba simba, ine jege simba kaviri iro re18-8 Austenitic Stainless Steels. Mumhinduro-yakashongedzwa mamiriro, jekisiti yayo inosvika 25%, uye iyo yakaomarara kukosha AK (V-notch) inodarika 100 J.
5. Waldability:DSS ine yakanaka welderability ine yakaderera inopisa ichipaza maitiro. Kufunga kazhinji hakudiwe usati wasvika, uye post-weld kupisa kurapwa kusakosha, kubvumira kutevedza ne 18-8 austenitic simbi kana carbon steels.
6. Kupisa Kushanda:Low-chromium (18% cr) dss ine inopisa inoshanda tembiricha yekudziya uye yekudzikira kudziya pane 18-8 austenitic simbi, kubvumira kutokunya kwakananga kuita mahwendefa pasina. Yakakwira-chromium (25% CR) DSS iri zvishoma zvakanyanya kuomesa basa rinopisa asi rinogona kugadzirwa mumirazvo, mapaipi, uye waya.
7. Kutonhora kushanda:DSS inoratidzira basa rakakura kuomesa panguva inotonhora kushanda kupfuura 18-8 Austenitic Stainless Steels, inoda kukwirira kwekutanga kwekusvibisa panguva pombi uye ndiro.
8. Inodzora concivity uye kuwedzera:DSS ine yakakwira inobata Izvo zvakare zvakanakira kupisa kuchinjika kwechibhuruu tube, nekumusoro kupisa kuchinjika kusakwana pane austenitic stainless simbi.
9. Brittleness:DSS inogara ichiverengera nzira dzepamusoro-chromium ferritic stainless maneera uye haina kukodzera kushandiswa pakushandiswa pamusoro pe200 ° C. Iyo yakadzika iyo chromium yezvinyorwa muDSS, iyo isingasviki iyo ndeye brittle zvikamu zvakadai seSigma chikamu.
Wamil Steel's Production Zvigadzirwa
Simbi yeWesm Zvigadzirwa zvedu zvinonamatira kune major International zviyero uye are iso, CE, uye API Certified. Tinogona kuwana chechitatu-bato kutarisisa uye kwekupedzisira kuongorora, kuve nechokwadi cheMhando yepamusoro Mhando Dzakasangana.
Wilam Simbi's duplex Stainless Svel zvigadzirwa zvinozivikanwa kune yavo:
Yakakwira-mhando zvigadzirwa zvekushandisa:Isu tinoshandisa chete zvinhu zvakanakisa zvekushandisa zvekushandisa kuti uve nechokwadi chechigadzirwa chechigadzirwa.
Advanced maitiro ekugadzira:Yedu-ye-iyo-iyo-yehunyanzvi zvigadzirwa zvivakwa uye timu ine ruzivo zvinoita kuti tigadzire duplex simbi ine mimwe yemakemikari uye michero yemakemikari.
Inogadziriswa Mhinduro:Isu tinopa huwandu hwakawanda hwehukuru uye rondedzero yekusangana nezvinodiwa zvevatengi vedu.
Stringent mhando yekudzora:Yedu yakasimba mhando yekudzora maitiro anoona kuti zvese zvigadzirwa zvinosangana nemitemo yepamusoro yeakanakisa.
Svitsa Global:Network yekubira, Wilm Simbi Software Dupplox Duplex Stainless Simbi kune vatengi pasi rese, vachitsigira maindasitiri akasiyana-siyana vane zvinhu zvakavimbika uye zvakakwirira-zvekuita.
Sarudza Simbi yesimbi yako yeDuplex Spainless inoda uye ruzivo rwakaipa rusina kufungidzirwa uye basa rinotisiyanisa neindasitiri.
Kutumira Nguva: Jul-29-2020