1: Dumama Ga Hastelloy B-2 alloys, yana da matukar mahimmanci don kiyaye farfajiyar tsabta kuma ba tare da gurbatawa ba kafin da lokacin dumama. Hastelloy B-2 ya zama mai karyewa idan aka yi zafi a cikin yanayin da ke ɗauke da sulfur, phosphorus, gubar, ko wasu gurɓataccen ƙarfe mai ƙarancin narkewa, galibi daga alamomin alamomi, zafin jiki na nuna fenti, mai da ruwa, hayaki. Gas mai hayaki dole ne ya ƙunshi ƙananan sulfur; Alal misali, sulfur abun ciki na iskar gas da liquefied man fetur ba ya wuce 0.1%, sulfur abun ciki na iska birane bai wuce 0.25g/m3, da kuma sulfur na man fetur ba ya wuce 0.5%. Abubuwan da ake buƙata na yanayin iskar gas don tanderun dumama yanayi ne na tsaka tsaki ko yanayin rage haske, kuma ba zai iya canzawa tsakanin oxidizing da ragewa. Harshen wuta a cikin tanderun ba zai iya tasiri kai tsaye Hastelloy B-2 alloy ba. A lokaci guda, ya kamata a yi zafi da kayan zuwa zafin da ake buƙata a mafi saurin dumama, wato, zafin wutar lantarki ya kamata a ɗaga shi zuwa zafin da ake buƙata da farko, sa'an nan kuma a saka kayan a cikin tanderun don dumama. .
2: Hot aiki Hastelloy B-2 gami za a iya zafi aiki a cikin kewayon 900 ~ 1160 ℃, kuma ya kamata a quenched da ruwa bayan aiki. Domin tabbatar da mafi kyawun juriya na lalata, ya kamata a shafe shi bayan aiki mai zafi.
3: Cold aiki Hastelloy B-2 gami dole ne a sha maganin maganin. Tun da yake yana da ƙimar ƙarfin aiki mafi girma fiye da bakin karfe na austenitic, ya kamata a yi la'akari da samar da kayan aiki a hankali. Idan an aiwatar da tsarin ƙirƙirar sanyi, annealing tsaka-tsakin ya zama dole. Lokacin da nakasar aikin sanyi ya wuce 15%, ana buƙatar maganin maganin kafin amfani.
4: Maganin zafi Maganin zafin jiki na maganin zafi ya kamata a sarrafa shi tsakanin 1060 ~ 1080 ° C, sa'an nan kuma sanyaya ruwa da kuma kashewa ko lokacin da kauri abu ya wuce 1.5mm, ana iya sanya shi cikin sauri don samun mafi kyawun juriya na lalata. A yayin kowane aikin dumama, dole ne a ɗauki matakan kariya don tsaftace saman kayan. Maganin zafi na kayan Hastelloy ko sassan kayan aiki ya kamata a kula da waɗannan batutuwa masu zuwa: Don hana lalacewar maganin zafi na sassan kayan aiki, ya kamata a yi amfani da zoben ƙarfafa bakin karfe; zafin tanderu, dumama da lokacin sanyaya ya kamata a sarrafa shi sosai; Yi pretreatment don hana thermal fasa; bayan maganin zafi, ana amfani da 100% PT zuwa sassa masu zafi; idan zafin zafi ya faru a lokacin maganin zafi, waɗanda suke buƙatar gyara walda bayan niƙa da kawar da su ya kamata su rungumi tsarin walda na musamman.
5: Descaling The oxides a saman Hastelloy B-2 gami da tabo kusa da walda kabu ya kamata a goge da lafiya nika dabaran. Tun da Hastelloy B-2 alloy yana da kula da matsakaicin oxidizing, za a samar da ƙarin iskar gas mai ɗauke da nitrogen yayin aikin tsinke.
6: Machining Hastelloy B-2 alloy ya kamata a yi amfani da shi a cikin yanayin da ba shi da kyau, kuma dole ne ya kasance da fahimtar fahimtar aikin sa. Ya kamata Layer ɗin da aka taurare ya ɗauki ƙimar ciyarwa mafi girma kuma ya ajiye kayan aiki a cikin yanayin aiki mai ci gaba.
7: Welding Hastelloy B-2 alloy weld karfe da yankin da ke fama da zafi suna da sauƙin haɓaka β lokaci kuma suna kaiwa ga matalauta Mo, wanda ke da alaƙa da lalatawar intergranular. Don haka, tsarin walda na Hastelloy B-2 ya kamata a tsara shi a hankali kuma a sarrafa shi sosai. Tsarin walda na gaba ɗaya shine kamar haka: kayan walda shine ERNi-Mo7; Hanyar walda ita ce GTAW; zafin jiki tsakanin matakan sarrafawa bai wuce 120 ° C ba; diamita na wayar walda shine φ2.4 da φ3.2; waldi halin yanzu ne 90 ~ 150A. A lokaci guda kuma, kafin waldawa, ya kamata a lalata wayar walda, tsagi na ɓangaren welded da sassan da ke kusa da su kuma a lalata su. Thermal conductivity na Hastelloy B-2 alloy ne da yawa karami fiye da na karfe. Idan an yi amfani da tsagi mai siffar V guda ɗaya, kusurwar tsagi ya kamata ya kasance a kusa da 70 °, kuma a yi amfani da shigar da ƙananan zafi. Maganin zafi bayan walda zai iya kawar da saura damuwa da inganta juriya lalata lalata.
Lokacin aikawa: Mayu-15-2023
