Rob Koltz naDave Meyer vanokurukura nezve ferritic (magnetic) uye austenitic (isina magineti) maitiro emasimbi asina simbi anokwenenzverwa.Vadivelu Comedy Getty Images
Mubvunzo: Ndiri kubatanidza tangi isiri-magnetic 316 Stainless simbi.Ndakatanga kusonerera matangi emvura newaya yeER316L ndikaona kuti magineti.Ndiri kuita chimwe chinhu chakaipa here?
A: Iwe unogona kunge usina chekunetseka nezvazvo.Zvakajairika kuti mawelds akagadzirwa neER316L akwezve magineti, uye mashiti akakungurutswa uye 316 mapepa kazhinji haakwezve magineti.
Iron alloys iripo muzvikamu zvakasiyana zvakasiyana zvichienderana nekupisa uye doping level, zvinoreva kuti maatomu ari musimbi akarongwa nenzira dzakasiyana.Zvikamu zviviri zvakajairika ndeye austenite uye ferrite.Austenite isiri-magnetic, nepo ferrite iine magineti.
Mune yakajairwa kabhoni simbi, austenite chikamu chinowanikwa chete pakudziya kwakanyanya, uye sezvo simbi inotonhora, austenite inoshanduka kuita ferrite.Naizvozvo, pakupisa kwekamuri, kabhoni simbi ine magineti.
Mamwe mamakisi esimbi isina tsvina, anosanganisira 304 uye 316, anonzi austenitic simbi isina tsvina nekuti chikamu chavo chikuru ndeye austenite pakupisa kwekamuri.Aya masimbi asina tsvina anoomesa kuita ferrite uye anotendeuka kuita austenite kana atonhodzwa.Austenitic Stainless simbi mahwendefa uye mashizha ari pasi pekudzora kutonhora uye kutenderedza mashandiro ayo anowanzo shandura yese ferrite kuita austenite.
Pakati pezana remakore rechi20, zvakaonekwa kuti kana welding austenitic stainless steels, kuvapo kweimwe ferrite mu weld metal kunodzivirira microcracks (kutsemuka) inogona kuitika kana simbi yekuzadza iri austenitic zvachose.Kudzivirira microcracks, simbi zhinji dzekuzadza austenitic simbi dzisina tsvina dzine pakati pe3% ne20% ferrite, saka dzinokwezva magineti.Muchokwadi, masensa anoshandiswa kuyera iyo ferrite yemukati mune Stainless simbi welds inogona zvakare kuyera mwero wekukwezva magineti.
316 inoshandiswa mune mamwe maapplication uko kwakakosha kudzikisa magineti eiyo weld, asi izvi hazviwanzo kudiwa mumatangi.Ndinovimba unogona kuenderera mberi nekutengesa pasina matambudziko.
WELDER, yaimbonzi Practical Welding Nhasi, inomiririra vanhu chaivo vanogadzira zvigadzirwa zvatinoshandisa uye kushanda nazvo mazuva ese.Magazini ino yave ichishandira nharaunda yekuNorth America kwemakore anopfuura 20.
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