URob Koltz kunye noDave Meyer baxoxa nge-ferritic (magnetic) kunye neempawu ze-austenitic (ezingezomagnetic) zeentsimbi ezingenasici.Getty Imifanekiso
UMBUZO: Ndiwelda itanki yentsimbi engenazibuthe engama-316.Ndaqalisa ukuwelda iitanki zamanzi ngocingo lwe-ER316L ndafumanisa ukuba iiwelds zimagnetic.Ngaba kukho into engalunganga endiyenzayo?
A: Mhlawumbi awunaxhala.Kuqhelekile ukuba iiweld ezenziwe nge-ER316L zitsale umazibuthe, kwaye amaphepha aqengqelekayo kunye namaphepha angama-316 kaninzi awatsali umazibuthe.
Iialloys zentsimbi zikhona kwizigaba ezininzi ezahlukeneyo ngokuxhomekeke kwiqondo lobushushu kunye nenqanaba le-doping, nto leyo ethetha ukuba iiathom zentsimbi zicwangciswe ngeendlela ezahlukeneyo.Izigaba ezibini eziqhelekileyo ziyi-austenite kunye ne-ferrite.I-Austenite ayiyo-magnetic, ngelixa i-ferrite imagnetic.
Kwintsimbi eqhelekileyo yekhabhoni, i-austenite sisigaba esikhoyo kuphela kumaqondo obushushu aphezulu, kwaye njengoko intsimbi iphola, i-austenite ijika ibe yi-ferrite.Ngoko ke, kwiqondo lokushisa, i-carbon steel imagnetic.
Amanye amabakala ensimbi engenasici, kuquka i-304 kunye ne-316, abizwa ngokuba yi-austenitic stainless steels kuba isigaba sabo esiphambili si-austenite kwiqondo lokushisa.Ezi zintsimbi ezingenasici ziqina kwi-ferrite kwaye zijike kwi-austenite xa zipholile.Iipleyiti zensimbi ezingenasici ze-Austenitic kunye namaphepha ziphantsi kolawulo olulawulwayo lokupholisa kunye nokuqengqeleka okuguqula ngokubanzi yonke i-ferrite ibe yi-austenite.
Embindini wenkulungwane yama-20, kwafunyaniswa ukuba xa ukuwelda iintsimbi austenitic stainless, ubukho ezinye ferrite kwi weld metal kuthintela microcracks (ukuqhekeka) ezinokuthi zenzeke xa intsimbi filler austenitic ngokupheleleyo.Ukuthintela i-microcracks, iintsimbi ezininzi zokuzalisa iintsimbi ze-austenitic stainless ziqulathe phakathi kwe-3% kunye ne-20% ye-ferrite, ngoko ke zitsala imagnethi.Enyanisweni, abenzi boluvo abasetyenziselwa ukulinganisa umxholo we-ferrite we-welds yensimbi engenasici inokulinganisa inqanaba lomtsalane wamagnetic.
I-316 isetyenziswe kwezinye izicelo apho kubalulekile ukunciphisa iimpawu zemagneti ze-weld, kodwa oku kunqabile ukuba kufuneke kwiitanki.Ndiyathemba ukuba ungaqhubeka ne-soldering ngaphandle kweengxaki.
I-WELDER, eyayifudula ibizwa ngokuba yi-Practical Welding Today, imele abantu bokwenene abenza iimveliso esizisebenzisayo nesisebenza ngazo yonke imihla.Eli phephancwadi belisoloko linceda abantu abadibanisa iintsimbi kuMntla Merika ngaphezu kweminyaka engama-20.
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