Vanhu vanowanzofunga izvozvovharafuyesimbi isina tsvina uye isingaite ngura. Kana ikadaro, inogona kunge iri dambudziko nesimbi. Iyi ipfungwa yedivi rimwe chete pamusoro pekusanzwisisa kwesimbi isina tsvina, iyo inogonawo kuita ngura pasi pemamwe mamiriro.
Simbi isina simbi inokwanisa kurwisa kusvibiswa kwemhepo-ndiko kuti, kuramba ngura, uye zvakare inokwanisa kukanganisa mumidhiya ine acid, alkali, uye munyu.-ndiko kuti, corrosion resistance. Zvisinei, ukuru hwehukwanisi hwayo hunopesana nehutu hunoshandurwa nemakemikari ekugadzirwa kwesimbi yayo pachayo, mamiriro ekudzivirira, mamiriro ekushandiswa uye rudzi rwemashoko ezvakatipoteredza.
Stainless simbi inowanzo patsanurwa kuita:
Kazhinji, zvinoenderana nechimiro chemetallographic, yakajairwa Stainless simbi yakakamurwa kuita zvikamu zvitatu: austenitic Stainless simbi, ferritic Stainless simbi, uye martensitic Stainless simbi. Pahwaro hwezvitatu izvi zvakakosha metallographic zvimiro, kune chaiyo zvinodiwa uye zvinangwa, maviri-chikamu simbi, kunaya-kuomesa simbi isina tsvina uye yakakwirira-alloy simbi ine simbi inodzika isingasviki 50% inotorwa.
1. Austenitic simbi isina tsvina.
Iyo matrix inotongwa neaustenite chimiro (CY chikamu) chechiso-chepakati cubic crystal chimiro, isiri-magnetic, uye inonyanya kusimbiswa nekushanda kunotonhora (uye inogona kutungamira kune mamwe magineti zvimiro) simbi isina tsvina. IAmerican Iron and Steel Institute inosarudzwa nenhamba mu200 uye 300 dzakatevedzana, dzakadai se304.
2. Ferritic simbi isina tsvina.
Matrix ari inodzorwa nechimiro cheferrite ((chikamu) chemuviri-chepakati cubic crystal chimiro, iyo ine magineti uye kazhinji haigone kuomeswa nekurapwa kwekupisa, asi inogona kusimbiswa zvishoma nekushanda kutonhora.IAmerican Iron and Steel Institute yakanyorwa ne430. uye 446.
3. Martensitic simbi isina tsvina.
Iyo matrix chimiro chemartensitic (body-centered cubic kana cubic), magineti, uye maitiro ayo emagetsi anogona kugadziriswa nekupisa kurapwa. IAmerican Iron and Steel Institute inosarudzwa nenhamba 410, 420 uye 440. Martensite ine chimiro che austenite pakupisa kwepamusoro, uye kana yakanyoroveswa kusvika kune tembiricha yekamuri pamwero wakakodzera, chimiro che austenite chinogona kushandurwa kuita martensite (kureva, kuomeswa) .
4. Austenitic-ferritic (duplex) simbi isina tsvina.
Iyo matrix ine zvese austenite uye ferrite maviri-chikamu chimiro, uye zviri mukati meishoma-chikamu matrix zvinowanzopfuura 15%. Iyo magnetic uye inogona kusimbiswa nekushanda kunotonhora. 329 ndiyo yakajairika duplex simbi isina tsvina. Kana ichienzaniswa neaustenitic stainless simbi, dual-phase simbi ine simba rakawanda, uye kuramba kune intergranular corrosion uye chloride stress corrosion uye pitting corrosion inovandudzwa zvakanyanya.
5. Kunaya kunoomesa simbi isina tsvina.
Iyo matrix ndeye austenite kana martensitic chimiro uye inogona kuomeswa nekunaya kwemvura kuoma. IAmerican Iron and Steel Institute yakanyorwa ne600 akatevedzana nhamba, yakadai se630, inova 17-4PH.
Kazhinji kutaura, kuwedzera kune alloys, iyo corrosion resistance ye austenitic stainless simbi yakanaka. Munzvimbo isina kupisa, ferritic simbi isina tsvina inogona kushandiswa. Munzvimbo inoodza zvinyoro nyoro, kana zvinhu zvichidikanwa kuve nepamusoro Nekuda kwesimba kana kuomarara kwakanyanya, martensitic Stainless simbi uye kunaya kwemvura kuomesa simbi isina tsvina inogona kushandiswa.
Common Stainless simbi mamakisi uye zvivakwa
01 304 Stainless Simbi
Ndiyo imwe yeanonyanya kushandiswa uye anoshandiswa zvakanyanya austenitic simbi isina tsvina. Inokodzera kugadzirwa kwezvikamu zvakadzika-kudhirowa uye mapaipi easidhi, midziyo, zvikamu zvechimiro, midziyo yakasiyana-siyana yezviridzwa, nezvimwewo. Inogonawo kushandiswa kugadzira isiri-magnetic, yakaderera-tembiricha midziyo uye chikamu.
02 304L Stainless Simbi
Kuti ugadzirise dambudziko re-ultra-low carbon austenitic stainless simbi yakagadziridzwa nekuda kwekunaya kweCr23C6 ichikonzera yakakomba intergranular corrosion tendency ye304 Stainless simbi mune mamwe mamiriro, yayo sensitized state intergranular corrosion resistance iri nani pane iyo ye304 stainless simbi. Kunze kwesimba rakaderera zvishoma, zvimwe zvivakwa zvakafanana ne321 simbi isina tsvina. Inonyanya kushandiswa kune corrosion-resistant midziyo uye zvikamu zvisingagone kuiswa pasi pekugadziriswa kwemhinduro mushure mekudzikiswa, uye inogona kushandiswa kugadzira akasiyana ezviridzwa mitumbi.
03 304H Stainless Simbi
Bazi remukati re304 simbi isina tsvina ine carbon mass chikamu che 0.04% -0.10%, uye kushanda kwayo kwekushisa kwepamusoro kuri nani kudarika kwe304 simbi isina tsvina.
04 316 Stainless Simbi
Kuwedzera molybdenum pahwaro hwe10Cr18Ni12 simbi inoita kuti simbi ive nekudzivirira kwakanaka kudzikisa kwepakati uye gomba ngura. Mumvura yegungwa uye nemimwe midhiya yakasiyana-siyana, kupikisa kwecorrosion kuri nani pane 304 simbi isina tsvina, inonyanya kushandiswa kugadzira-pitting-resistant materials.
05 316L Stainless Simbi
Ultra-yakaderera kabhoni simbi ine kumira zvakanaka kune sensitized intergranular corrosion uye inokodzera kugadzirwa kwewelded parts nemidziyo ine gobvu chikamu dimensions, senge corrosion-resistant zvinhu mu petrochemical equipment.
06 316H Stainless Simbi
Bazi remukati re 316 simbi isina tsvina ine carbon mass chikamu che 0.04% -0.10%, uye kushanda kwayo kwekushisa kwepamusoro kuri nani pane iyo ye316 simbi isina tsvina.
07 317 Stainless Simbi
Iyo pitting corrosion resistance uye creep resistance iri nani pane 316L simbi isina tsvina, iyo inoshandiswa mukugadzira petrochemical uye organic acid corrosion resistant equipment.
08 321 Stainless Simbi
Titanium-yakadzikama austenitic simbi isina tsvina, ichiwedzera titanium kuvandudza intergranular corrosion resistance, uye ine yakanaka yepamusoro-tembiricha michina zvivakwa, inogona kutsiviwa neultra-low carbon austenitic stainless steel. Kunze kwezviitiko zvakakosha senge tembiricha yakanyanya kana hydrogen corrosion resistance, kazhinji haikurudzirwe kushandiswa.
09 347 Stainless Simbi
Niobium-yakadzikama austenitic simbi isina tsvina, ichiwedzera niobium kuvandudza intergranular corrosion resistance, kusaora kwegora muasidhi, alkali, munyu uye mamwe ma media ekuora kwakafanana ne321 simbi isina tsvina, yakanaka welding performance, inogona kushandiswa seyakaorera-inodzivirira zvinhu uye anti. -corrosion Kupisa simbi inonyanya kushandiswa mumagetsi ekupisa uye petrochemical minda, sekugadzira midziyo, mapaipi, kupisa exchangers, shafts, choto machubhu muchoto cheindasitiri, uye choto chubhu thermometers.
10 904L Stainless Simbi
Super yakakwana austenitic Stainless simbi imhando ye super austenitic Stainless simbi yakagadzirwa neOUTOKUMPU muFinland. , Iine yakanaka corrosion resistance mune isiri-oxidizing acids yakadai sesulfuric acid, acetic acid, formic acid uye phosphoric acid, uye inewo kumira kwakanaka kune crevice corrosion uye kusagadzikana kwekuora mwoyo. Iyo yakakodzera kune dzakasiyana siyana dze sulfuric acid pazasi 70°C, uye ine yakanaka corrosion resistance muacetic acid uye yakasanganiswa asidhi yeformic acid uye acetic acid pane chero kusungwa uye tembiricha pasi pekumanikidzwa kwakajairwa.
11 440C simbi isina tsvina
Martensitic Stainless simbi ine kuomarara kwepamusoro pakati pesimbi dzisina tsvina dzakaomarara nesimbi dzisina tsvina, nekuoma kweHRC57. Inonyanya kushandiswa kugadzira nozzles, mabearings,shavishavivharafu cores,shavishavivharafu zvigaro, maoko,vharafu madzinde, etc.
12 17-4PH simbi isina tsvina
Martensitic precipitation inoomesa simbi isina tsvina nekuoma kweHRC44 ine simba rakawanda, kuoma uye kusagadzikana kwecorrosion uye haigone kushandiswa patembiricha inopfuura 300.°C. Iine corrosion resistance kumhepo uye ine acid yakanyungudutswa kana munyu. Kupokana kwayo nekuora kwakafanana ne304 simbi isina tsvina uye 430 simbi isina tsvina. Inoshandiswa kugadzira mapuratifomu ekumahombekombe, turbine blades,shavishavivharafu (mavharuvhu cores, zvigaro zvevharuvhu, maoko, madzinde evharuvhu) wait.
In vharafu dhizaini uye sarudzo, akasiyana masisitimu, akateedzana, uye mamakisi esimbi isina tsvina anowanzo kusangana nawo. Paunenge uchisarudza, dambudziko rinofanirwa kutariswa kubva kune akati wandei maonero senge chaiwo maitiro epakati, tembiricha, kudzvanywa, kumanikidzwa zvikamu, ngura, uye mutengo.
Nguva yekutumira: Jul-20-2022
