Ịkụ n'ọkụ na-ekpo ọkụ bụ usoro brazing ọhụrụ na-enweghị mgbanwe n'okpuru ọnọdụ agụụ.N'ihi na brazing dị na ebe oghere, enwere ike iwepụ mmetụta na-emerụ ahụ nke ikuku na workpiece nke ọma, yabụ enwere ike ịme brazing nke ọma na-enweghị itinye flux.A na-ejikarị ya eme ihe maka ọla brazing na alloys ndị siri ike braze, dị ka aluminum alloy, titanium alloy, superalloy, refractory alloy and ceramics.Njikọ brazed na-egbuke egbuke ma dị oke, na-enwe ezigbo ihe eji arụ ọrụ na nguzogide corrosion.A naghị ejikarị akụrụngwa brazing Vacuum maka ịgbado agịga nke carbon steel yana obere alloy steel.
Akụrụngwa brazing dị n'ọkụ na-ekpo ọkụ bụ nke sitere na ọkụ brazing na-ekpo ọkụ na sistem ikuku.Enwere ụdị abụọ nke oghere brazing Furnace: Ebe a na-ekpo ọkụ na ebe ọkụ oyi.Ụdị ọkụ abụọ ahụ nwere ike ikpo ọkụ site na gas ma ọ bụ ọkụ eletrik.Enwere ike ịhazi ha n'ime ọkụ dị n'akụkụ, ọkụ ọkụ na-agbanye ala ma ọ bụ n'elu ikpo ọkụ (ụdị Kang), na usoro agụụ nwere ike ịbụ eluigwe na ala.
Agụụ usoro tumadi na-agụnye agụụ unit, agụụ pipeline, agụụ valvụ, wdg The agụụ unit na-emekarị mejupụtara rotary vane n'ibu mgbapụta na mmanụ mgbasa mgbapụta.Igwe mgbapụta igwe eji eme otu otu nwere ike nweta ihe na-erughị ogo 1.35 × Vacuum nke ọkwa 10-1pa.Iji nweta oghere dị elu, a ghaghị iji mgbapụta mmanụ na-ekesa mmanụ n'otu oge ahụ, nke nwere ike iru 1.35 n'oge a × Vacuum ogo nke 10-4Pa larịị.A na-atụle nrụgide gas dị na usoro ahụ site na nlele oghere.
Ịkụ ọkụ n'ime ọkụ na-ekpo ọkụ bụ ịka ọkụ n'ime ọkụ ma ọ bụ ọnụ ụlọ brazing nke ikuku ewepụtara.Ọ dị mma karịsịa maka brazing nnukwu nkwonkwo na-aga n'ihu.Ọ dịkwa mma maka ijikọ ụfọdụ ọla pụrụ iche, gụnyere titanium, zirconium, niobium, molybdenum na tantalum.Agbanyeghị, vacuum brazing nwekwara ọghọm ndị a:
① N'okpuru oghere ọnọdụ, metal dị mfe volatilize, otú agụụ brazing ekwesịghị iji maka isi metal na solder ịgbado ọkụ agbanwe ọcha.Ọ bụrụ na ọ dị mkpa, ekwesịrị ịme usoro usoro mgbagwoju anya kwekọrọ.
② Vacuum brazing na-enwe mmetụta maka ịdị nro dị elu, ịdị mma mgbakọ na nnabata kwesịrị ekwesị nke akụkụ brazed, ma nwee nnukwu ihe achọrọ maka gburugburu ebe ọrụ na ọkwa ọkwa nke ndị na-arụ ọrụ.
③ Ngwá ọrụ oghere dị mgbagwoju anya, yana nnukwu ego otu oge yana ọnụ ahịa mmezi dị elu.
Ya mere, otu esi emejuputa usoro brazing na ọkụ ọkụ ọkụ?Mgbe a na-eme brazing n'ime ọkụ ọkụ, tinye weldment na ịgbado ọkụ n'ime ọkụ (ma ọ bụ n'ime akpa brazing), mechie ọnụ ụzọ ọkụ (ma ọ bụ mechie mkpuchi mkpuchi brazing), ma kpochaa tupu kpo oku.Malite igwe mgbapụta mbụ, tụgharịa valvụ steering mgbe ogo agụụ ahụ ruru 1.35pa, mechie ụzọ kpọmkwem n'etiti mgbapụta igwe na ọkụ brazing, mee ka pipeline jikọọ ya na ọkụ brazing site na mgbapụta mgbasa, rụọ ọrụ n'ime obere oge site na. Na-adabere na igwe mgbapụta igwe na mgbapụta mgbasa, gbanye ọkụ brazing na ogo agụụ achọrọ, wee malite ikpo ọkụ eletrik.
N'oge dum usoro nke okpomọkụ ịrị elu na kpo oku, na agụụ unit ga-arụ ọrụ na-aga n'ihu iji nọgide na-enwe agụụ n'ime ọkụ, dechapụ ikuku ntapu na dị iche iche interface nke agụụ usoro na brazing ọkụ, ntọhapụ nke gas na mmiri vepo adsorbed site oven. mgbidi, ihe nrụnye na welded, na ngbanwe nke ígwè na oxide, ka o wee belata ezi ọdịda ikuku.E nwere ụdị abụọ nke oghere brazing: elu oghere brazing na akụkụ oghere (ọkara oghere) brazing.Akwa brazing dị elu dabara adaba maka brazing metal base nke oxide siri ike ire ere (dị ka nickel base superalloy).A na-eji brazing obere oghere maka oge mgbe metal ma ọ bụ ihe na-ere ihe na-agbanwe agbanwe n'okpuru ọnọdụ brazing na ọnọdụ oghere dị elu.
Mgbe a ga-akpachapụ anya pụrụ iche iji hụ na ịdị ọcha dị elu, a ga-anakwere usoro ịsacha oghere tupu ikpo ọkụ hydrogen akọrọ.N'otu aka ahụ, iji hydrogen akọrọ ma ọ bụ usoro ịsacha gas na-adịghị adị tupu ịfụpụta agụụ ga-enyere aka nweta nsonaazụ ka mma na nnukwu oghere brazing.
Oge nzipu: Mee-07-2022