Stainless simbi zvikamu

Tsanangudzo Pfupi

Simbi isina simbi iboka remaferrous alloys ane hushoma hunosvika 11% chromium, chimiro chinodzivirira simbi kuti isaite ngura uye zvakare inopa inodzivirira kupisa.Mhando dzakasiyana dzesimbi isina tsvina dzinosanganisira zvinhu kabhoni (kubva pa0.03% kusvika kuhukuru kupfuura 1.00%), nitrogen, aluminium, silicon, sarufa, titanium, nickel, mhangura, selenium, niobium, uye molybdenum.Marudzi chaiwo esimbi isina tsvina anowanzo kusarudzwa neAISI nhamba-matatu nhamba, semuenzaniso, 304 isina tsvina.

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Nhanganyaya yeStainless steel parts:

Simbi isina tsvina iboka remasimbi ane ferrous alloys ane hushoma hunosvika 11% chromium, chimiro chinodzivirira simbi kuti isaita ngura uye inopawo zvinhu zvinodzivirira kupisa.Marudzi akasiyana esimbi isina tsvina anosanganisira maelement carbon (kubva pa 0.03% kusvika pakukura kudarika 1.00%), nitrogen, aluminium, silicon, sulfur, titanium, nickel, mhangura, selenium, niobium, uye molybdenum.Marudzi chaiwo esimbi asina tsvina anowanzosarudzwa neAISI nhamba yezvikamu zvitatu, semuenzaniso, 304 isina tsvina.Iyo ISO 15510 yakajairwa inonyora maumbirwo emakemikari emasimbi asina tsvina ezvakatemerwa mune iripo ISO, ASTM, EN, JIS, uye GB (Chinese) zviyero mutafura inobatsira yekuchinjana.

Stainless simbi inopokana nekuita ngura inokonzerwa nekuvapo kwechromium mune alloy, iyo inoumba passive firimu inodzivirira zvinhu zviri pasi kubva pakurwiswa kwekuora, uye inogona kuzviporesa pamberi pe oxygen.Corrosion resistance inogona kuwedzerwa mberi nenzira dzinotevera. :

1. wedzera chromium content kusvika kudarika 11%.
2. wedzera nickel kusvika pa8%.
3. wedzera molybdenum (iyo inovandudzawo kuramba kugomba ngura).

Kuwedzerwa kwenitrogen kunonatsiridzawo kuramba kwegomba uye kunowedzera simba remagetsi. Saka, kune akawanda mamakisi esimbi isina tsvina ine chromium uye molybdenum zviri mukati kuti zvienderane nenharaunda iyo alloy inofanira kutsungirira.

Kupokana nekuora uye kusviba, kuchengetedza kwakaderera, uye kupenya kwakajairwa kunoita kuti simbi isina tsvina ive chinhu chakakodzera kune akawanda maapplication panodiwa kusimba kwesimbi uye kusadzivirirwa.Uyezve, simbi isina tsvina inogona kukungurutswa kuita mashiti, ndiro, mbariro, waya, uye tubing.Izvi zvinogona kushandiswa mukubika, kuchekwa, midziyo yekuvhiya, midziyo mikuru, mota, zvinhu zvekuvakisa muzvivakwa zvakakura, midziyo yemumaindasitiri (semuenzaniso, mumapepa, zvigayo zvemakemikari, kurapwa kwemvura), uye matangi ekuchengetedza uye matangi emakemikari uye zvigadzirwa zvekudya.Izvo zvinhu zvekudzivirira kwemarara, kureruka kwazvinogona kucheneswa-kucheneswa uye sterilized, uye kusavapo kwekuda kwekupfekedzwa kwepamusoro kwakakurudzira kushandiswa kwesimbi isina tsvina mumakicheni uye zvidyarwa zvekugadzira chikafu.

Austenitic Stainless steel ndiyo mhuri yakakura kwazvo yesimbi isina tsvina, inoita zvikamu zviviri kubva muzvitatu zvezvose zvakagadzirwa nesimbi isina tsvina (ona nhamba dzekugadzira pazasi).Vane austenitic microstructure, inova face-centered cubic crystal structure. Iyi microstructure inowanikwa nealloying simbi ine nickel yakakwana uye/kana manganese uye nitrogen kuchengetedza austenitic microstructure pakupisa kwese, kubva kunharaunda ye cryogenic kusvika painonyungudika. .Nekudaro, austenitic Stainless simbi haiomese nekupisa kurapwa sezvo iine yakafanana microstructure pakupisa kwese.

Mutsara wesimbi isina tsvina

Austenitic Stainless steels inogona zvakare kukamurwa kuita maviri madiki-mapoka, 200 akatevedzana uye mazana matatu akatevedzana:

200 dzakatevedzana ndeye chromium-manganese-nickel alloys iyo inowedzera kushandiswa kwemanganese uye nitrogen kuderedza kushandiswa kwenickel.Nekuda kwekuwedzera kwavo nitrogen, vane simba rinosvika 50% regoho repamusoro pane mazana matatu akateedzana mashizha esimbi.

Type 201 inoomesa kuburikidza nekushanda kunotonhora.
Rudzi rwe202 isimbi isina simbi isina chinangwa.Kudzikira nickel yemukati uye kuwedzera manganese kunokonzeresa kushomeka kwekudzivirira.
300 akatevedzana ari chromium-nickel alloys anowana austenitic microstructure yavo inenge yakasarudzika ne nickel alloying;mamwe magiredhi ane alloyed zvakanyanya anosanganisira imwe nitrogen kuderedza nickel zvinodiwa.300 series ndiro boka guru uye rinonyanya kushandiswa.
Type 304: Giredhi rinonyanyozivikanwa ndeye Type 304, inozivikanwawo se18/8 uye 18/10 pakuumbwa kwayo kwe18% chromium uye 8%/10% nickel, zvichiteerana.
Rudzi rwe 316: Yechipiri inowanzoita austenitic simbi isina tsvina ndeye Type 316. Kuwedzerwa kwe2% molybdenum kunopa kupikisa kukuru kune acids uye corrosion yemunharaunda inokonzerwa ne chloride ions.Yakaderera-kabhoni shanduro, senge 316L kana 304L, ine kabhoni yemukati pazasi 0.03% uye inoshandiswa kudzivirira matambudziko ekuora anokonzerwa newelding.

Kupisa kupisa kwesimbi dzisina tsvina

Martensitic Stainless simbi inogona kupiswa nekupisa kuti ipe zvirinani zvemichina.

Kurapa kwekupisa kunowanzobatanidza matanho matatu:
Austenitizing, umo simbi inopisa kusvika kune tembiricha muhuwandu hwe980-1,050 ° C (1,800-1,920 ° F), zvichienderana negiredhi.Iyo inoguma austenite ine face-centered cubic crystal chimiro.
Quenching.Iyo austenite inoshandurwa kuita martensite, yakaoma muviri-yakatarisana tetragonal crystal chimiro.Iyo quenched martensite yakaoma kwazvo uye yakanyanya brittle kune mazhinji maapplication.Imwe yakasara austenite inogona kusara.
Tempering.Martensite inopisa kusvika ku500 ° C (932 ° F), inobatwa patembiricha, yozotonhodzwa nemhepo.Kunyanya kupisa tembiricha inoderedza goho simba uye yekupedzisira kusimba simba asi inowedzera kurebesa uye kupikisa kuramba.