Yaya game da tasirin walda na injin brazing makera

Yaya game da tasirin walda na injin brazing makera

Hanyar brazing a cikin tanderu sabuwar hanya ce ta brazing ba tare da juzu'i a ƙarƙashin yanayi mara kyau ba.Saboda brazing yana cikin yanayi mara kyau, ana iya kawar da cutarwar iska akan kayan aikin yadda ya kamata, don haka ana iya yin nasarar yin brazing ba tare da amfani da juzu'i ba.Ana amfani da shi ne musamman don ƙera ƙarfe da gawa waɗanda ke da wahalar braze, irin su aluminium alloys, alloys titanium, allo mai zafi mai zafi, gami da yumbu.Ƙwararren brazed yana da haske kuma mai sauƙi, tare da kyawawan kayan aikin injiniya da juriya na lalata.Ba a yin amfani da kayan aikin injin daskarewa gabaɗaya don waldar allura na ƙarfe na carbon da ƙarancin gami da ƙarfe.

Kayan aiki na brazing a cikin tanderun da ba a taɓa amfani da su ba sun ƙunshi mafi yawan tanderun brazing da injin injin.Akwai nau'i biyu na vacuum brazing Furnaces: Wuta mai zafi da murhu mai sanyi.Ana iya dumama tanderu iri biyu ta hanyar iskar gas ko dumama wutar lantarki, kuma za'a iya tsara su zuwa tanderun da aka ɗaura a gefe, tanderun da ke ƙasa ko kuma na sama (nau'in Kang).Za a iya amfani da tsarin vacuum gaba ɗaya.

Vacuum tsarin yafi hada da injin naúrar, injin bututun, injin bawul, da dai sauransu. Vacuum naúrar yawanci hada da Rotary vane inji famfo da mai watsa famfo.Injin injin kawai zai iya samun ƙasa da 1.35 × Vacuum digiri na matakin 10-1pa.Domin samun matsananciyar sarari, dole ne a yi amfani da famfon watsa mai a lokaci guda.A wannan lokacin, zai iya isa 1.35 × Vacuum digiri na matakin 10-4Pa.Ana auna matsi na iskar gas a cikin tsarin tare da ma'auni.

Brazing a cikin tanderu shine a yi tagulla a cikin tanderu ko ɗakin murhu tare da fitar da iska.Yana da dacewa musamman don ƙwanƙwasa manyan haɗin gwiwa da ci gaba, kuma ya dace da haɗa wasu ƙarfe na musamman, gami da titanium, zirconium, niobium, molybdenum da tantalum.Yana da aikace-aikace da yawa.Koyaya, vacuum brazing shima yana da lahani masu zuwa:

① Ƙarfe yana da sauƙi don daidaitawa a ƙarƙashin injin, don haka bai dace ba don amfani da brazing na ƙarfe don ƙarfe mai tushe da filler karfe na abubuwa maras tabbas.Idan ya zama dole don amfani, za a ɗauki matakan tsari masu rikitarwa masu dacewa.

② Vacuum brazing yana kula da ƙarancin ƙasa, ingancin taro da juriyar juzu'i na sassan brazed, kuma yana buƙatar babban matakin ka'idar yanayin aiki da masu aiki.

③ Kayan aikin injin yana da rikitarwa, tare da babban saka hannun jari na lokaci guda da tsadar kulawa.

Don haka, yadda ake aiwatar da tsarin brazing a cikin tanderun injin injin?Lokacin da aka gudanar da brazing a cikin tanderu, za a ɗora waldar da za a yi wa walda a cikin tanderun (ko a cikin jirgin ruwan brazing), za a rufe ƙofar tanderun (ko a rufe murfin jirgin ruwan brazing), a riga an share shi kafin. dumama.Fara famfo na inji da farko, kunna bawul ɗin tuƙi bayan matakin injin ya kai 1.35pa, rufe hanyar kai tsaye tsakanin famfon inji da tanderun brazing, sanya bututun da aka haɗa tare da tanderun brazing ta hanyar famfo mai yaduwa, dogara da famfon inji kuma famfon watsawa don yin aiki cikin ƙayyadaddun lokaci, kunna tanderun brazing zuwa matakin da ake buƙata, sannan fara wutar lantarki akan dumama.

A yayin duk aikin hawan zafin jiki da dumama, injin injin zai ci gaba da aiki don kula da injin injin a cikin tanderu, kashe ɗigon iska a wurare daban-daban na tsarin injin da tanderun ƙarfe, sakin iskar gas da tururi adsorbed akan bangon tanderu, gyarawa da walƙiya, haɓakar ƙarfe da oxide, da dai sauransu, don rage iska ta gaskiya.Akwai nau'ikan vacuum brazing iri biyu: babban injin brazing da partial vacuum (matsakaici vacuum) brazing.Babban vacuum brazing ya dace sosai don brazing karfen tushe wanda oxide ke da wuyar rubewa (kamar nickel base superalloy).Ana amfani da ɓoyayyen ɓoyayyen ɓoyayyen ɓoyayyiya don lokuttan da ƙarfen tushe ko ƙarfen filler ke canzawa a ƙarƙashin zafin brazing da matsanancin yanayi.

Lokacin da dole ne a ɗauki matakan tsaro na musamman don tabbatar da tsafta mai girma, za a yi amfani da hanyar tsarkakewa kafin busasshiyar takin hydrogen.Hakazalika, yin amfani da busasshiyar hydrogen ko hanyar tsabtace iskar iskar gas kafin tsabtacewa zai taimaka wajen samun sakamako mai kyau a cikin ƙyallen ƙura.