1.Ukukhethwa kwezinto kanye nokushisela ukukhiqiza kuhambisana nekhodi ye-ASME Boiler and Pressure Vessel kanye ne-ANSI Pressure Pipeline Code.
2. Ukwakheka kwamakhemikhali ensimbi yezingxenye ezishiselwe kanye nezinto ezishiselwe kufanele kuhambisane nezinhlinzeko zezinga.Izinto eziyisisekelo kufanele zihambisane nezinhlinzeko zobuchwepheshe ze-ASTM zama-athikili afanelekile B165, B164, B127.impahla yokugcwalisa kufanele ihambisane nempahla yokugcwalisa ye-ASME A-42 ye-ER-NiCu-7 eshiwo noma i-ER-ENICu-4.
3. I-weld bevel kanye nendawo ezungezile yebala (i-oil ester, ifilimu yamafutha, ukugqwala, njll.) kufanele ihlanzwe ngesisombululo sokuhlanza.
4. Uma izinga lokushisa lesisekelo lingaphansi kuka-0 ℃, kudingeka ukuthi lishise kuqala libe ngu-15.6-21℃, futhi i-weld bevel yento eshisiwe iyashisisa ibe ngu-16-21℃ phakathi kuka-75mm.
5. I-weld bevel eyenziwe ngaphambilini incike kakhulu endaweni yokushisela kanye nobukhulu bezinto ezibonakalayo, ingxube ye-Monel idinga i-engeli ye-bevel ye-weld kunezinye izinto, unqenqema olungenalutho kunezinye izinto ukuze lube luncane, ukuze ubukhulu bepuleti le-monel alloy engu-3.2 -19mm, i-engeli ye-bevel ingu-40 °i-engeli enonqenqema oluyi-1.6mm, igebe lempande elingu-2.4mm, i-weld engaphansi kuka-3.2mm nhlangothi zombili ukuze isikwe isikwele noma i-bevel esikwe kancane, ingasikwa i-bevel.Izinhlangothi ze-weld ziqala ngomshini ngezindlela zemishini, noma ezinye izindlela ezifanele, njenge-arc gas planing noma i-plasma cutting, i-arc cutting.Kungakhathaliseki ukuthi iyiphi indlela, uhlangothi lwe-weld kufanele lube iyunifomu, lubushelelezi futhi lungabi ne-burr, i-bevel ngeke ibe ne-slag, ukugqwala nokungcola okuyingozi, uma kukhona ukuqhekeka kwe-slag nezinye iziphambeko zidinga ukupholishwa bese zihlolwa ngokucophelela ngaphambi kokushisela. .
6. Izinhlinzeko zokujiya kwepuleti lempahla engumzali, ukujiya kwempahla enconyiwe (4-23mm) kufika ku-19mm okushiselwa okuvumelekile, obunye ugqinsi bungashiselwa kodwa budinga okunamathiselwe komdwebo onemininingwane.
7. Ukushisela ngaphambi kwenduku yokushisela ukomisa ukwelashwa, ukomisa ukulawula izinga lokushisa ku-230 - 261 C.
8. Izimo Welding: ebusweni izingxenye ashiselwe ayikwazi ashiselwe ngenxa imvula nomswakama, izinsuku imvula, izinsuku ezinomoya ayikwazi evulekile-air Welding, ngaphandle uma usethe ishede zokuzivikela.
9. Akukho ukwelashwa okushisa okudingekayo ngemva kokushisela.
10. Iningi lobuchwepheshe bokushisela lune-metal arc welding (SMAW), lungasetshenziswa futhi ngegesi evikelekile ye-tungsten arc welding (GTAW), ukushisela okuzenzakalelayoakunconyiwe.Uma i-welding ezenzakalelayo isetshenziswa, khona-ke i-argon arc welding, ukusetshenziswa kwenduku yokushisela akuguquki inqubo yokushisela, ukuze wenze ukusebenza kwe-weld metal fluidity, kungahle kuguquke kancane ukusiza ukugeleza kwensimbi ye-weld, kodwa ububanzi be-swing ububanzi bukwenza. ungadluli kabili ububanzi benduku yokushisela, ekusebenziseni indlela ye-SMAW ye-welding elulaamapharamitha yilezi:Ukunikezwa kwamandla: ukuxhumana okuqondile, okuhlehlayo, ukusebenza okungekuhleI-Voltage: 18-20VCurrent: 50 - 60AElectrode: ngokuvamile φ2.4mm ENiCu-4 (Monel 190) electrode
11. I-spot welding kufanele ihlanganiswe empandeni yesiteshi sokushisela.
12. Ngemva kokwakhiwa kwe-weld, akukho unqenqema oluvunyelwe ukuba lube khona.
13. I-butt weld kufanele iqiniswe, ukuphakama kokuqinisa akufanele kube ngaphansi kuka-1.6mm futhi kungabi ngaphezu kuka-3.2mm, ukuqagela akufanele kube ngaphezu kuka-3.2mm, futhi kungabi ngaphezu kuka-3.2mm we-bevel yepayipi.
14. Ngemuva kokushisela ungqimba ngalunye lwe-weld, kufanele lube yi-weld flux kanye nokunamathela ngebhulashi lensimbi yensimbi engagqwali ukususa okuhlanzekile, ngaphambi kokushisela ungqimba olulandelayo.
15. Ukulungiswa kwesici: Lapho ikhwalithi yenkinga ye-weld, ukusetshenziswa kokugaya nokusika noma i-arc gas kuzombiwa amaphutha kuze kube umbala wensimbi yasekuqaleni, bese i-welded kabusha ngokuvumelana nezinqubo zokuqala zokushisela kanye nezinhlinzeko zobuchwepheshe, musa. vumela indlela yokusando ukuvala i-weld metal cavity noma ukugcwalisa umgodi ngezinto zangaphandle.
16. I-Carbon steel overlay welding Welding I-Monel alloy izosebenzisa i-p2.4mm welding rod, ngoba ungqimba olushiselwe i-Monel alloy kufanele okungenani lube ugqinsi luka-5mm, ukuze kugwenywe imifantu, kufanele luhlukaniswe okungenani izingqimba ezimbili zokushisela.Ungqimba lokuqala ungqimba olushintshayo lwe-Monel alloy exutshwe ne-carbon steel.Isendlalelo sesibili ngaphezu kongqimba oluhlanzekile lwe-alloy ye-Monel, ngemva kokucubungula ukuze kuqinisekiswe ukuthi kunongqimba oluqinile lwe-Monel alloy olusebenzayo oluyi-3.2mm, ungqimba ngalunye olushiselwe ukuze lupholiswe ekamelweni lokushisa, ngebhulashi lensimbi engagqwali ukuze kukhishwe i-welding flux ngaphambi kokushisela. ongqimbeni.
17. Ubukhulu obungaphezu kuka-6.35 mm wepuleti le-alloy ye-Monel, ukushisela izinqe kuzohlukaniswa zibe izingqimba ezine noma ngaphezulu zokushisela.Izendlalelo ezintathu zokuqala ezitholakalayo induku yokushisela emihle (φ2.4mm) yokushisela, izingqimba ezimbalwa zokugcina ezitholakalayo induku yokushisela eqinile (φ3.2mm) yokushisela.
18. I-Monel alloy welding phakathi kwe-AWS ENiCu-4 welding rod ER NiCu-7 wire, carbon steel kanye ne-Monel alloy welding ene-EN NiCu-1 noma i-EN iCu-2 induku yokushisela ezinye izihlinzeko kanye okufanayo nemibandela engenhla.
ikhwalithi yokulawula
Ukuqinisekisa ikhwalithi yokushisela, ukuhlola izindlela zokuhlola ezingalimazi kusho ukulawula ikhwalithi, njengemisebe, izinhlayiya kazibuthe, i-ultrasonic, ukungena kanye nezinye izindlela zokuhlola ukuze zihlolwe.Wonke ama-welds kufanele futhi ahlolwe ukukhubazeka kokubukeka, njengokuqhekeka kwendawo, ukuluma, ukuqondanisa nokungena kwe-weld, njll. Ngesikhathi esifanayo, uhlobo lwe-welding, ukwakheka kwe-weld kufanele futhi kuhlolwe.Wonke ama-weld ezimpande kufanele ahlolwe ukuze afakwe umbala, futhi uma kutholakala amaphutha, kufanele alungiswe ngaphambi kokuba kuhlolwe ama-welds asele.
Isikhathi sokuthumela: Feb-13-2023