Sei Stainless simbi ichiitawo ngura? Pakupedzisira ndazviona!

Sei Stainless simbi ichiitawo ngura?

Apo ngura dzakasvibirira (mavara) dzinooneka pamusoro pepombi dzesimbi dzisina tsvina, vanhu vanoshamiswa: “Simbi isina simbi haina ngura, uye kana ikaita ngura, haisi simbi isina tsvina, uye pangava nechinetso nesimbi.” Kutaura zvazviri, iyi ndiyo imwe-divi risinganzwisisike pamusoro pekushaya kunzwisisa kwesimbi isina tsvina. Simbi isina tsvina ichaitawo ngura pasi pemamwe mamiriro.

Simbi isina simbi inokwanisa kurwisa kusvibiswa kwemuchadenga-kureva, kuramba ngura, uye zvakare inokwanisa kukanganisa mumidhiya ine acids, alkalis, uye munyu-kureva, corrosion resistance. Nekudaro, saizi yeapo-anti-corrosion kugona kunosiyana nekemikari yesimbi yayo pachayo, mamiriro ekuwedzera pamwe chete, mamiriro ekushandiswa uye mhando yezvenhau zvakatipoteredza. Semuyenzaniso, 304 simbi pombi ine zvachose yakanakisa anti-corrosion kugona munzvimbo yakaoma uye yakachena, asi kana ikaendeswa kune imwe nzvimbo yegungwa, ichaita ngura munguva pfupi iri mumhute yegungwa ine munyu wakawanda; uye 316 simbi pombi inoratidza zvakanaka.

Nokudaro, haisi yemhando ipi zvayo yesimbi isina tsvina inogona kurwisa corrosion uye ngura mune chero mamiriro ezvinhu.chikamu chealuminium

Kune akawanda maitiro ekukuvadza kune firimu repamusoro, rinonyanya kuitika muhupenyu hwezuva nezuva ndeaya anotevera:
Simbi isina tsvina inotsamira pane yakaonda kwazvo, yakasimba, yakanaka uye yakagadzikana chromium-rich oxide film (inodzivirira firimu) yakaumbwa pamusoro payo kudzivirira kuenderera kuchipinda uye oxidation yemaatomu eokisijeni kuti uwane kugona kurwisa ngura. Kana firimu rikangoparara nekuda kwechimwe chikonzero, maatomu eokisijeni ari mumhepo kana mvura acharamba achipinda kana kuti maatomu esimbi ari musimbi acharamba achiparadzana, ogadzira iron oxide yakasununguka, uye pamusoro pesimbi inoramba ichikoromoka. Kune akawanda marudzi ekukuvadzwa kweiyi firimu repamusoro, rakajairika muhupenyu hwezuva nezuva ndeaya anotevera:
1. Pamusoro pesimbi isina tsvina, pane madhipoziti ehuruva kana heterogeneous metal particles ane zvimwe zvinhu zvesimbi. Mumhepo ine hunyoro, mvura yakapfupikiswa pakati pemadhipoziti nesimbi isina tsvina inobatanidza zviviri izvi kuita bhatiri diki, izvo zvinokonzeresa kuita kwe electrochemical. , iyo inodzivirira firimu yakakuvadzwa, inonzi electrochemical corrosion.stamping chikamu
2. Organic juices (yakadai semiriwo, noodle soup, sputum, nezvimwewo) inonamatira pamusoro pesimbi isina tsvina. Muhupo hwemvura uye okisijeni, organic acids inoumbwa, uye organic acids inoparadza simbi yepasi kwenguva yakareba.
3. Pamusoro pesimbi isina tsvina inonamatira kune zvinhu zvine acids, alkali uye munyu (zvakadai semvura yealkali uye mvura yeraimu inoputika kubva pamadziro ekushongedza), zvichiita kuti pave nekuora.
4. Mumhepo yakasvibiswa (yakadai semhepo ine sulfide yakawanda, carbon oxide, nitrogen oxide), kana ikasangana nemvura yakanyungudutswa, inoumba sulfuric acid, nitric acid, uye acetic acid liquid points, zvichiita kuti kemikari iparadze.
Kuti tive nechokwadi chesimbi inopenya zvachose pasina ngura, tinokurudzira:
Mamiriro ezvinhu ari pamusoro apa anogona kukonzera kukanganisa kwefirimu inodzivirira pamusoro pesimbi isina tsvina uye inokonzera ngura. Naizvozvo, kuve nechokwadi chekuti simbi yepasi inopenya zvachose uye haina ngura, tinokurudzira:
1. Pamusoro pekushongedza simbi isina tsvina inofanira kucheneswa uye kukweshwa kazhinji kubvisa zvakabatanidzwa uye kubvisa zvinhu zvekunze zvinokonzera kugadziriswa.
2. 316 simbi isina tsvina inofanira kushandiswa munzvimbo dzegungwa, iyo inogona kudzivisa kuora kwemvura yegungwa.
3. Mushonga wekemikari yemamwe mapaipi esimbi isina tsvina pamusika haugoni kusangana nemitemo yenyika inoenderana uye haigone kusangana ne304 zvinhu zvinodiwa. Naizvozvo, zvichakonzerawo ngura, izvo zvinoda kuti vashandisi vasarudze zvakanaka zvigadzirwa kubva kune vane mbiri vanogadzira.

Simbi isina tsvina zvakare ine magineti here?

Vanhu vanowanzo funga kuti magineti anokwezva simbi isina tsvina kuti aone zvayakanakira nezvayakaipira uye chokwadi chayo. Kana iyo isingakweveri isiri-magnetism, inoonekwa seyakanaka, uye ndeyechokwadi; kana iri magineti, inoonekwa seyekunyepedzera. Muchokwadi, iyi inzira ine divi rimwe chete, isingaite uye isiriyo yekuzivisa nzira.
Kune akawanda marudzi esimbi isina tsvina, ayo anogona kupatsanurwa mumapoka akati wandei zvichienderana nechimiro patembiricha yekamuri:
1. Austenitic type: yakadai se201, 202, 301, 304, 316, nezvimwewo;
2. Martensite kana ferrite mhando: dzakadai 430, 420, 410, nezvimwewo;

Iyo austenitic mhando isiri-magineti kana isina simba magineti, uye iyo martensite kana ferrite ine magineti.kutendeuka chikamu
Mazhinji esimbi isina tsvina anowanzo shandiswa pakushongedza chubhu mapepa ndeye austenitic 304 zvinhu, izvo kazhinji zvisiri-magineti kana zvisina simba remagineti, asi zvinogona zvakare kuratidzika semagineti nekuda kwekushanduka kwemakemikari kuumbwa kana akasiyana ekugadzirisa mamiriro anokonzerwa nekunyungudutswa, asi izvi hazvigone kutariswa. se a

Yekunyepera kana kuti yakaderera, chii chikonzero cheizvi?

Sezvataurwa pamusoro apa, austenite isiri-magnetic kana isina simba remagineti, nepo martensite kana ferrite iine magineti. Pamusana pekuparadzaniswa kwechikamu kana kusagadziriswa kwekupisa panguva yekunyunguduka, zvishoma zvemartensite kana ferrite mu austenitic 304 simbi isina tsvina ichakonzerwa. muviri tishu. Nenzira iyi, 304 simbi isina tsvina ichave isina simba remagineti.

Mukuwedzera, mushure mekushanda kunotonhora kwe304 simbi isina tsvina, chimiro chichashandurwawo kuva martensite. Iyo yakakura iyo inotonhora yekushanda deformation, iyo yakawanda martensite shanduko, uye yakakura iyo magineti maitiro esimbi. Kufanana nebhechi remitsetse yesimbi, Φ76 machubhu anogadzirwa pasina pachena magineti induction, uye Φ9.5 machubhu anogadzirwa. Iyo magineti induction inova pachena nekuda kweiyo deformation yakakura yekukotama nekukotama. Iyo deformation yesquare rectangular chubhu yakakura kupfuura iyo yeround chubhu, kunyanya chikamu chekona, iyo deformation yakanyanya uye simba remagineti rinonyanya kuoneka.

Kuti ubvise zvachose magineti e304 simbi inokonzerwa nezvikonzero zviri pamusoro, iyo yakagadzikana austenite chimiro inogona kudzoreredzwa nepamusoro-tembiricha mhinduro kurapwa, nekudaro kubvisa iyo magineti.

Kunyanya, iyo magnetism ye304 simbi isina tsvina inokonzerwa nezvikonzero zviri pamusoro yakasiyana zvachose nemagnetism yezvimwe zvinhu zvakadai se430 uye carbon steel, zvinoreva kuti magnetism ye304 simbi inogara ichiratidza simba remagineti.

Izvi zvinotiudza kuti kana Stainless simbi tambo isina simba remagineti kana zvachose isiri magineti, inofanirwa kutongwa se304 kana 316 zvinhu; kana yakafanana nekabhoni simbi, inoratidza magnetism yakasimba, nokuti inotongwa sekuti haisi 304 zvinhu.