Simbi isina simbi inozivikanwa nekusimba kwayo, kusaita ngura, uye kukwezva. Nekudaro, haisi yese simbi inogona kutora yakakurumbira "stainless" prefix. Chimwe chinhu chakakosha chinotarisa kana simbi inokodzera kuve isina tsvina ndeye chromium yemukati.
Chromium inoita basa rakakosha mukushandura simbi yenguva dzose kuita simbi isina tsvina. Kuti uwane zita risingasviki, simbi inofanirwa kunge iine chikamu chidiki chekromium. Kakawanda, simbi isina tsvina inoda inokwana 10.5% chromium yemukati kuti inhibisa ngura kugadzira zvinobudirira. Ichi chikumbaridzo chinogadza hwaro hwesimbi isingaore, ichiita kuti ive yakakodzera kune dzakasiyana siyana.
Kuwedzerwa kwechromium kusimbi kunogadzira inodzivirira oxide layer pamusoro, inozivikanwa seyo passive layer. Iri danga rinoshanda senhovo kubva kune zvinoparadza zvinhu zvakaita semwando neokisijeni. Pasina ichi chipingamupinyi chinodzivirira, simbi inowanzoitika kuita ngura uye kuora. Nekubatanidza chromium, simbi isina simbi inowana kupikisa kwepamusoro pakusvibisa, kusvibisa, uye gomba, kuve nechokwadi chekugara kwenguva refu uye kuvimbika munzvimbo dzakasiyana.
Uyezve, kuvapo kwechromium kunowedzera simba uye kusimba kwesimbi. Iyi alloying element inovandudza simbi yemagetsi, ichiita kuti iwedzere kusimba uye kusimba kana ichienzaniswa neyakajairwa simbi mamakisi. Synergy pakati pechromium nezvimwe zvinhu zvealloying inonatsa iyo microstructure yesimbi isina tsvina, zvichikonzera kuwedzera kwekuita maitiro.
Mumaindasitiri kubva pakugadzira chikafu kusvika pakuvaka, Stainless simbi inosarudzika hunhu inoita kuti ive sarudzo inosarudzika yezvikumbiro zvakakosha. Kugona kumira nemamiriro ezvinhu akaomarara, kuchengetedza hutsanana, uye kuramba kubuda kwemakemikari kunosimbisa kukosha kwechromium mukugadzirwa kwesimbi isina tsvina. Ingave ichishandiswa mukucheka, zviridzwa zvekurapa, zvivakwa, kana zvinhu zvemuchadenga, simbi isina simbi inochinja-chinja inobva mukuumbwa kwayo kwakapfumisa chromium.
Mukupedzisa, kubatanidzwa kwehuwandu hwekromium ye10.5% inosiyanisa simbi isina tsvina kubva kune yayo yakajairika. Iyi alloying element inopa simba simbi ine corrosion kuramba, kusimba, uye simba, ichiisa parutivi sechinhu cheprimiyamu kune akasiyana maindasitiri uye epamba zvinangwa. Kusanganiswa kwesainzi uye simbi mukugadzirwa kwesimbi isina tsvina kunosimbisa basa rakakosha rechromium mukuumba huinjiniya hwazvino uye maitiro ekugadzira.
Nguva yekutumira: Mar-22-2024
