U-Rob Koltz no-Dave Meyer baxoxa ngezici ze-ferritic (magnetic) ne-austenitic (ezingezona kazibuthe) zezinsimbi ezingenasici ezishisekayo.Izithombe ze-Getty
Q: Ngishisela ithangi lensimbi engagqwali elingu-316 elingelona uzibuthe.Ngaqala ukushisela amathangi amanzi ngocingo lwe-ER316L ngathola ukuthi amashisela anozibuthe.Ingabe kukhona okungalungile engikwenzayo?
IMP: Cishe akukho okumele ukhathazeke ngakho.Kuvamile ukuthi amashidi enziwe nge-ER316L ahehe uzibuthe, futhi amashidi agoqiwe kanye namashidi angu-316 ngokuvamile awahehi uzibuthe.
Ama-alloys ensimbi akhona ngezigaba eziningana ezihlukene kuye ngokuthi izinga lokushisa kanye nezinga le-doping, okusho ukuthi ama-athomu ensimbi ahlelwe ngezindlela ezahlukene.Izigaba ezimbili ezivame kakhulu yi-austenite ne-ferrite.I-Austenite ayiyona i-magnetic, kuyilapho i-ferrite ikazibuthe.
Ku-carbon steel evamile, i-austenite iyisigaba esikhona kuphela emazingeni okushisa aphezulu, futhi njengoba insimbi iphola, i-austenite iphenduka ibe yi-ferrite.Ngakho-ke, ekamelweni lokushisa, i-carbon steel iyimagnetic.
Amanye amamaki ensimbi engagqwali, kuhlanganise no-304 no-316, abizwa ngokuthi ama-austenitic stainless steels ngoba isigaba sawo esiyinhloko siyi-austenite ekamelweni lokushisa.Lezi zinsimbi ezingenasici ziyaqina ukuze zibe yi-ferrite futhi ziphenduke zibe i-austenite uma zipholile.Amapuleti namashidi ensimbi engagqwali ye-Austenitic angaphansi kokupholisa nokugingqika okulawulwayo okuvame ukuguqula yonke i-ferrite ibe i-austenite.
Maphakathi nekhulu lama-20, kwatholakala ukuthi lapho kushiselwa izinsimbi ezingenasici ze-austenitic, ukuba khona kwe-ferrite ethile ensimbi ye-weld kuvimbela ama-microcracks (ukuqhekeka) okungenzeka lapho i-filler metal i-austenitic ngokuphelele.Ukuvimbela ama-microcracks, izinsimbi eziningi zokugcwalisa zezinsimbi ezingenasici ze-austenitic ziqukethe phakathi kuka-3% no-20% we-ferrite, ngakho-ke ziheha omazibuthe.Eqinisweni, izinzwa ezisetshenziselwa ukukala okuqukethwe kwe-ferrite kumashisela ensimbi engagqwali nazo zingakala izinga lokukhanga kazibuthe.
I-316 isetshenziswa kwezinye izinhlelo zokusebenza lapho kubalulekile ukunciphisa amandla kazibuthe we-weld, kodwa lokhu akuvamile ukuthi kudingeke emathangeni.Ngithemba ukuthi ungaqhubeka nokunamathisela ngaphandle kwezinkinga.
I-WELDER, ngaphambili ebibizwa nge-Practical Welding Today, imele abantu bangempela abenza imikhiqizo esiyisebenzisayo nesisebenza ngayo nsuku zonke.Lo magazini ubulokhu usebenzela umphakathi wokushisela eNyakatho Melika iminyaka engaphezu kwengu-20.
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