Ukukhiqiza Nokushisa Ukwelashwa kwe-Hastelloy B-2 Alloy.

1: Ukushisa Kuma-alloys e-Hastelloy B-2, kubaluleke kakhulu ukugcina indawo ihlanzekile futhi ingenakho ukungcola ngaphambi nangesikhathi sokushisisa.I-Hastelloy B-2 iba brittle uma ishiswa endaweni equkethe isulfure, phosphorus, lead, noma okunye ukungcola kwensimbi encibilika kancane, ikakhulukazi kusukela kumaka omaka, izinga lokushisa elibonisa upende, amafutha noketshezi, intuthu.I-flue gas kufanele ibe nesibabule esincane;isibonelo, okuqukethwe kwesibabule segesi yemvelo kanye negesi ye-petroleum e-liquefied akudluli ku-0.1%, okuqukethwe kwesibabule somoya wasemadolobheni akudluli ku-0.25g/m3, kanti uwoyela we-sulfure awudluli u-0.5%.Imfuneko yemvelo yegesi yesithando sokushisa iyindawo engathathi hlangothi noma indawo enciphisa ukukhanya, futhi ayikwazi ukuguquguquka phakathi kwe-oxidizing nokunciphisa.Ilangabi esithandweni somlilo alikwazi ukuthinta ngqo ingxubevange ye-Hastelloy B-2.Ngasikhathi sinye, izinto ezisetshenziswayo kufanele zishiswe ekushiseni okudingekile ngesivinini sokushisa esisheshayo, okungukuthi, izinga lokushisa lesithando sokushisa kufanele liphakanyiswe ekushiseni okudingekile kuqala, bese into leyo kufanele ifakwe esithandweni sokushisa. .

2: Ukusebenza okushisayo kwe-Hastelloy B-2 alloy kungashiswa kusetshenzwe ebangeni lika-900 ~ 1160℃, futhi kufanele sicinywe ngamanzi ngemva kokucubungula.Ukuze kuqinisekiswe ukumelana nokugqwala okungcono kakhulu, kufanele kukhishwe ngemuva kokusebenza okushisayo.

3: Ingxubevange ye-Hastelloy B-2 esebenza ngokubanda kufanele ithole ukwelashwa kwesixazululo.Njengoba inezinga eliphakeme kakhulu lokuqina lomsebenzi kunensimbi engagqwali ye-austenitic, imishini yokwakha kufanele icatshangelwe ngokucophelela.Uma inqubo yokwakheka ebandayo yenziwa, ukufakwa kwe-interstage annealing kuyadingeka.Lapho ukuguqulwa kokusebenza okubandayo kudlula i-15%, ukwelashwa kwesisombululo kuyadingeka ngaphambi kokusetshenziswa.

4: Ukwelashwa kokushisa Izinga lokushisa lokwelashwa kokushisa kwesixazululo kufanele lilawulwe phakathi kuka-1060 ~ 1080 ° C, bese lipholiswa ngamanzi futhi licinywe noma lapho ukushuba kwempahla kungaphezu kuka-1.5mm, kungapholiswa ngokushesha emoyeni ukuze kutholwe ukumelana nokugqwala okungcono kakhulu.Phakathi nanoma yikuphi ukusebenza kokushisa, kufanele kuthathwe izinyathelo zokuhlanza ubuso bezinto.Ukwelashwa kokushisa kwezinto ze-Hastelloy noma izingxenye zemishini kufanele kunake lezi zindaba ezilandelayo: Ukuze uvimbele ukuguqulwa kokwelashwa kokushisa kwezingxenye zemishini, izindandatho zokuqinisa insimbi engenasici kufanele zisetshenziswe;izinga lokushisa lesithando somlilo, ukushisa kanye nesikhathi sokupholisa kufanele kulawulwe ngokuqinile;Yenza ukwelashwa kwangaphambili ukuvimbela imifantu eshisayo;ngemuva kokwelashwa okushisa, i-100% PT isetshenziswa ezingxenyeni eziphethwe ukushisa;uma ukuqhekeka okushisayo kwenzeka ngesikhathi sokwelashwa kokushisa, labo abadinga ukulungisa i-welding ngemva kokugaya nokuqeda kufanele bathathe inqubo ekhethekile yokulungisa i-welding.

5: Ukwehlisa Ama-oxide angaphezulu kwe-alloy ye-Hastelloy B-2 kanye namabala eduze komthungo wokushisela kufanele apholishwe ngesondo lokugaya elihle.Njengoba i-Hastelloy B-2 alloy izwela ku-oxidizing medium, igesi egcwele i-nitrogen izokhiqizwa ngesikhathi senqubo yokukhetha.

I-6: I-Machining Hastelloy B-2 ingxubevange kufanele yenziwe ngomshini esimweni se-annealed, futhi kufanele ibe nokuqonda okucacile komsebenzi wayo wokuqina.Isendlalelo esiqinile kufanele sithathe isilinganiso esikhulu sokuphakelayo futhi sigcine ithuluzi lisesimweni sokusebenza okuqhubekayo.

I-7: Ukushisela i-Hastelloy B-2 alloy weld metal kanye nendawo ethinteke ukushisa kulula ukusho isigaba β futhi kuholele ku-Mo empofu, ejwayele ukugqwala phakathi kwegranular.Ngakho-ke, inqubo yokushisela ye-Hastelloy B-2 alloy kufanele yenziwe ngokucophelela futhi ilawulwe ngokuqinile.Inqubo ye-welding evamile imi kanje: impahla yokushisela i-ERNi-Mo7;indlela yokushisela i-GTAW;izinga lokushisa phakathi kwezingqimba zokulawula alikho ngaphezu kwe-120 ° C;ububanzi bocingo lokushisela ngu-φ2.4 no-φ3.2;i-welding current ingu-90~150A.Ngesikhathi esifanayo, ngaphambi kwe-welding, ucingo lwe-welding, i-groove yengxenye ehlanganisiwe kanye nezingxenye eziseduze kufanele zihlanjululwe futhi zihlanjululwe.I-thermal conductivity ye-Hastelloy B-2 alloy incane kakhulu kuneyensimbi.Uma kusetshenziswa i-groove eyodwa emise okwe-V, i-engeli ye-groove kufanele ibe ngu-70 °, futhi okokufaka okuphansi kokushisa kufanele kusetshenziswe.Ukwelashwa kokushisa kwe-post-weld kungaqeda ingcindezi esele futhi kuthuthukise ukumelana nokuqhekeka kokugqwala kwengcindezi.