Intsimbi engagqwaliyo ephindwe kabini inesakhiwo esincinci esinezigaba ezibini apho iqhekeza levolumu ye-ferrite kunye ne-austenite limalunga ne-50%. Ngenxa yesakhiwo sayo esincinci esinezigaba ezibini, ezi ntsimbi zidibanisa iipropati ezilungileyo zeentsimbi ezingagqwaliyo ze-ferritic kunye ne-austenitic. Ngokubanzi, isigaba se-ferrite (i-lattice ye-cubic ephakathi komzimba) sibonelela ngamandla aphezulu oomatshini, ukuqina okuhle kunye nokumelana okuhle nokugqwala, ngelixa isigaba se-austenite (i-lattice ye-cubic ephakathi kobuso) sibonelela ngokuguquguquka okuhle.
Ukudibana kwezi mpawu yingakho iintsimbi ezingenasici ezimbini zisetyenziswa kakhulu kumashishini e-petrochemical, pulp kunye nephepha, elwandle kunye namashishini okuvelisa umbane. Ziyakwazi ukumelana ne-corrosive media, zandise ixesha lenkonzo, kwaye zisebenze kwiimeko ezimandundu kakhulu zendalo.
Izixhobo ezinamandla aphezulu zikuvumela ukuba unciphise ubukhulu kunye nobunzima benxalenye. Umzekelo, intsimbi engagqwaliyo ene-super duplex inokubonelela ngamandla okuvelisa aphezulu ngokuphindwe kathathu ukuya kane kunye nokumelana okuphezulu kokugqwala kwemigodi kunentsimbi engagqwaliyo ene-316.
Iintsimbi eziqinileyo ezimbini zihlulwe zibe ziiklasi ezintathu ngokusekwe kumxholo we-gravimetric chromium (Cr) kunye nenani elilinganayo lokumelana nemingxuma (PREN):
Enye yezinto ezibalulekileyo zokuwelda i-DSS, i-SDSS, i-HDSS kunye neentsimbi ezikhethekileyo ze-alloy stainless steels kukulawula iiparameter zokuwelda.
Iimfuneko zenkqubo yokuwelda kushishino lwe-petrochemical zimisela ixabiso elincinci le-PREN elifunekayo kwiintsimbi zokuzalisa. Umzekelo, i-DSS ifuna i-PREN engama-35 kwaye i-SDSS ifuna i-PREN engama-40. Umfanekiso 1 ubonisa i-DSS kunye nentsimbi yokuzalisa ehambelanayo ne-GMAW kunye ne-GTAW. Ngokwesiqhelo, umxholo we-Cr wentsimbi yokuzalisa uya kufana nowesinyithi esisisiseko. Enye indlela ekufuneka uyiqwalasele xa usebenzisa i-GTAW kwiingcambu nakwiitshaneli ezishushu kukusebenzisa iintsimbi zokuzalisa ze-superalloy. Ukuba isinyithi sokuwelda asifani ngenxa yobuchule obungalunganga, isinyithi sokuzalisa esixutyiweyo kakhulu sinokubonelela nge-PREN efunekayo kunye namanye amaxabiso kwisampulu exutyiweyo.
Njengomzekelo wokubonisa oku, abanye abavelisi bacebisa ukusebenzisa i-SDSS filler wire (25% Cr) kwii-alloys ezisekelwe kwi-DSS (22% Cr), kunye ne-HDSS filler wire (27% Cr) kwii-alloys ezisekelwe kwi-SDSS (25% Cr). Kwii-alloys ezisekelwe kwi-HDSS, ungasebenzisa ne-HDSS filler wire. Le ntsimbi ye-austenitic-ferritic duplex stainless ine-ferrite emalunga ne-65%, i-chromium engama-27%, i-nickel engama-6.5%, i-molybdenum engama-5% kwaye ithathwa njengengaphantsi kwe-0.015% ye-carbon ephantsi.
Xa kuthelekiswa ne-SDSS, ukupakisha kwe-HDSS kunamandla aphezulu okuvelisa kunye nokumelana okungcono nokugqwala kwemingxuma kunye ne-crevice. Kukwanokumelana okuphezulu nokuqhekeka koxinzelelo olubangelwa yi-hydrogen kunye nokumelana okuphezulu kwiindawo ezine-asidi enamandla kune-SDSS. Amandla ayo aphezulu athetha amazinga aphantsi okugcinwa ngexesha lokuveliswa kwemibhobho, kuba uhlalutyo lwezinto ezilinganiselweyo alufuneki kwisinyithi esijijekileyo samandla afanayo, kwaye imigangatho yokwamkelwa inokuba yinto encinci.
Ngenxa yoluhlu olubanzi lwezixhobo ezisisiseko, iimfuno zoomatshini kunye neemeko zenkonzo, nceda ucinge ngokubonisana ne-DSS application kunye nengcali yesinyithi ngaphambi kokuba uqalise iprojekthi yakho elandelayo.
I-WELDER, eyayisakuba yi-Practical Welding Today, ibonisa abantu bokwenyani abenza iimveliso esizisebenzisayo nesisebenza nazo yonke imihla. Le magazini ikhonze uluntu oludibanisa iintsimbi eMntla Melika kangangeminyaka engaphezu kwama-20.
Ngoku ngokufikelela ngokupheleleyo kuhlelo lwedijithali lwe-FABRICATOR, ukufikelela lula kwizixhobo ezixabisekileyo zoshishino.
Uhlelo lwedijithali lweThe Tube & Pipe Journal ngoku lufikeleleka ngokupheleleyo, nto leyo enika ukufikelela lula kwizixhobo ezixabisekileyo zoshishino.
Yonwabela ukufikelela ngokupheleleyo kuhlelo lwedijithali lwe-STAMPING Journal, olubonelela ngenkqubela phambili yetekhnoloji yamva nje, iindlela ezilungileyo kunye neendaba zoshishino kwimarike yokunyathela isinyithi.
Ngoku ngokufikelela ngokupheleleyo kuhlelo lwedijithali lwe-The Fabricator en Español, ukufikelela lula kwizixhobo ezixabisekileyo zoshishino.