Hanyar Busa Gas Na Kariya

A halin yanzu, akwai manyan hanyoyi guda biyu na busawa na iskar gas: ɗaya iskar gas mai karewa ta gefe, kamar yadda aka nuna a cikin hoto 1; ɗayan kuma iskar gas ɗin kariya ta coaxial. Ana la'akari da takamaiman zaɓi na hanyoyin busa guda biyu a fannoni da yawa.Gabaɗaya, ana ba da shawarar yin amfani da busa gefe don kare iskar gas

paraxial hura iskar gas mai kariya

coaxial busa iskar gas mai kariya

Na farko, yana buƙatar bayyana cewa abin da ake kira weld shine "oxidized" sunan kawai na kowa.A ka’ida, yana nufin halayen sinadaran da ke tsakanin walda da sinadarai masu cutarwa a cikin iska, wanda ke haifar da tabarbarewar ingancin walda.Ya zama ruwan dare ga ƙarfen walda don amsa oxygen, nitrogen da hydrogen a cikin iska a wani yanayin zafi.

Don hana walda daga kasancewa "oxidized" shine don rage ko kauce wa hulɗar irin waɗannan abubuwa masu cutarwa tare da karfen weld a cikin yanayin zafi mai zafi.Wannan babban yanayin zafin jiki ba kawai narkakkar pool karfe ne, amma dukan lokaci tsari daga lokacin da weld karfe ne narke zuwa solidification na pool karfe da kuma zafin jiki ne rage zuwa wani zazzabi a kasa.

Alal misali, titanium gami waldi, a lokacin da zafin jiki ne sama da 300 ℃ iya da sauri sha hydrogen, fiye da 450 ℃ iya sauri sha oxygen, fiye da 600 ℃ iya sauri sha nitrogen, don haka titanium gami waldi kabu bayan solidification da zazzabi rage zuwa 300 ℃. a ƙasa wannan mataki yana buƙatar tasiri mai tasiri na kariya, in ba haka ba zai zama "oxidized".

Daga bayanin da ke sama ba shi da wahala a fahimta, kariyar iskar gas ba kawai tana buƙatar lokaci ba don kare walƙiya narkar da tafkin, kuma yana buƙatar welded kawai yankin daskararre na kariyar, don haka gabaɗaya ɗaukar paraxial da aka nuna a hoto na 1 gefen kariya. gas, saboda wannan hanyar dangane da hanyoyin da za a kare kariya ta kewayon kariya ta hanyar kariya ta coaxial na adadi 2 ya fi yadu, Musamman ga weld kawai yanki mai ƙarfi yana da mafi kyawun kariya.

Paraxial gefen busa don aikace-aikacen injiniya, ba duk samfuran ba ne za su iya amfani da hanyar gefen shaft gefen busa iskar gas, don wasu takamaiman samfuran, kawai za su iya amfani da iskar kariya ta coaxial kawai, takamaiman buƙatu daga tsarin samfurin da zaɓin haɗin gwiwa da aka yi niyya.

1. Madaidaicin walda

Kamar yadda aka nuna a cikin Hoto 3, sifar weld ɗin samfurin shine madaidaiciyar layi, kuma nau'in haɗin gwiwa na iya zama haɗin gwiwa na butt, haɗin gwiwa na cinya, haɗin gwiwa mara kyau ko haɗin haɗaɗɗen walda.Don irin wannan nau'in samfurin, yana da kyau a ɗauki hanyar sigar iska mai karewa ta gefen shaft kamar yadda aka nuna a hoto 1.

2. Lebur rufaffiyar hoto weld

Kamar yadda aka nuna a cikin Hoto na 4, sifar weld ɗin samfurin shine sifar dawafi na jirgin sama, siffa mai yawa na jirgin sama, sifar layi mai nau'i-nau'i da yawa da sauran sifofin rufaffiyar.Siffofin haɗin gwiwa na iya zama haɗin gwiwa na gindi, haɗin gwiwa na cinya, haɗaɗɗen walda da sauransu.Don irin wannan samfurin, yana da kyau a ɗauki yanayin iskar gas na coaxial wanda aka nuna a cikin hoto 2.

Zaɓin iskar gas mai karewa kai tsaye yana shafar ingancin walda, inganci da farashin samarwa, amma saboda bambancin kayan walda, a cikin ainihin aikin walda, zaɓin gas ɗin walda ya fi rikitarwa, yana buƙatar cikakken la'akari da kayan walda, hanyar walda. , Matsayin walda, da kuma buƙatun tasirin walda, ta hanyar gwajin walda don zaɓar mafi dacewa da iskar gas, walda don cimma sakamako mafi kyau.

Source: Fasahar walda