Rob Koltz naDave Meyer vakurukura nezvehunhu hwesimbi dzisina simbi dzinosungirirwa dzinoita semagineti (ferritic) uye austenitic (non-magnetic). Getty Images
Mubvunzo: Ndiri kusona tangi resimbi isina magnetic 316. Ndakatanga kusona matangi emvura newaya yeER316L ndikaona kuti ma welds acho ane magnetic. Pane chandiri kuita chisina kunaka here?
A: Pamwe hauna chekunetseka nacho. Zvakajairika kuti ma weld akagadzirwa neER316L akwezve magnetism, uye ma rolled sheets nema 316 sheets kazhinji haakwezve magnetism.
Ma alloys esimbi aripo muzvikamu zvakasiyana-siyana zvichienderana nekupisa uye mwero we doping, zvinoreva kuti maatomu ari musimbi akarongwa nenzira dzakasiyana. Zvikamu zviviri zvakajairika ndeichi austenite ne ferrite. Austenite haina magineti, nepo ferrite iri magineti.
Musimbi yakajairwa yekabhoni, austenite inguva inongovapo chete kana tembiricha yakakwira, uye sezvo simbi inotonhora, austenite inoshanduka kuita ferrite. Saka, patembiricha yemumba, simbi yekabhoni ine magineti.
Mamwe marudzi esimbi isina ngura, anosanganisira 304 ne316, anonzi austenitic stainless steels nekuti chikamu chayo chikuru iaustenite patembiricha yemumba. Idzi simbi dzisina ngura dzinooma kuita ferrite uye dzinoshanduka kuita austenite kana dzatonhodzwa. Maplate esimbi isina ngura eAustenitic nemapepa anoitwa mabasa ekutonhodza nekutenderedza anodzorwa izvo zvinowanzo shandura ferrite yese kuita austenite.
Pakati pezana remakore rechi20, zvakaonekwa kuti kana tichibatanidza simbi dzisina kusimba dzeaustenitic, kuvapo kweimwe ferrite musimbi yeweld kunodzivirira ma microcracks (kutsemuka) anogona kuitika kana simbi yefiller yave austenitic zvachose. Kudzivirira ma microcracks, simbi zhinji dzefiller dzesimbi dzisina kusimba dzeaustenitic dzine pakati pe3% ne20% ferrite, saka dzinokwezva magineti. Kutaura zvazviri, masensa anoshandiswa kuyera huwandu hweferrite hwesimbi dzisina kusimba dzestainless steel anogonawo kuyera mwero wekukwezva kwemagnetic.
316 inoshandiswa mune mamwe maapplication apo zvakakosha kuderedza hunhu hwemagineti hweweld, asi izvi hazviwanzodiwa mumatangi. Ndinovimba kuti munogona kuramba muchibatanidza pasina matambudziko.
WELDER, yaimbonzi Practical Welding Today, inomiririra vanhu chaivo vanogadzira zvigadzirwa zvatinoshandisa uye zvatinoshanda nazvo zuva nezuva. Magazini iyi yave ichishandira nharaunda yevanosanganisa simbi muNorth America kwemakore anopfuura makumi maviri.
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