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 yokubumba 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.
Isikhathi sokuthumela: May-15-2023
