1. Ihe e ji eme brazing
(1) A naghị eji ihe na-agbaze ígwè dị nro eme ka ígwè Titanium na ihe ndị dị na ya sie ike. Ọla ndị na-agbaze ígwè e ji eme ihe maka ihe na-agbaze ígwè na-agụnyekarị ntọala ọlaọcha, ntọala aluminom, ntọala titanium ma ọ bụ ntọala titanium zirconium.
A na-ejikarị ihe e ji ọlaọcha mee ihe maka ihe ndị nwere okpomọkụ ọrụ na-erughị 540 ℃. Njikọ ndị a na-eji ihe e ji ọlaọcha mee nwere ike dị ala, dị mfe ịgbawa, na enweghị ike iguzogide nchara na iguzogide oxidation. Okpomọkụ brazing nke ihe e ji Ag Cu mee dị ala karịa nke ọlaọcha, mana ike mmiri na-ebelata ka ọdịnaya Cu na-abawanye. Ihe e ji Ag Cu mee nwere obere Li nwere ike ime ka mmiri dị na mmiri na ogo alloy dị n'etiti ihe e ji ígwè mee na ihe e ji ígwè mee. Ihe e ji AG Li mee nwere njirimara nke ebe agbaze dị ala na mbelata siri ike. Ọ dabara adaba maka ihe e ji titanium na titanium mee na ikuku nchebe. Agbanyeghị, ihe e ji ígwè mee ga-emerụ ọkụ ahụ n'ihi ikuku Li. Ag-5al- (0.5 ~ 1.0) Mn mee ihe bụ ihe e ji ígwè mee ihe kacha mma maka ihe ndị e ji ígwè mee na titanium dị gịrịgịrị. Ihe e ji ígwè mee nwere ezigbo oxidation na iguzogide nchara. Ike shear nke ihe e ji ígwè mee na titanium mee ka e jiri ígwè ọlaọcha mee ihe na Tebụl 12.
Tebụl 12 paramita usoro brazing na ike nkwonkwo nke titanium na titanium alloys
Okpomọkụ brazing nke ihe e ji aluminom mee dị ala, nke na-agaghị eme ka titanium alloy β Mgbanwe nke usoro na-ebelata ihe achọrọ maka nhọrọ nke ihe na ihe owuwu brazing. Mmekọrịta dị n'etiti ihe e ji eme brazing na ihe e ji eme brazing dị ala, mgbaze na mgbasa adịghịkwa apụta ìhè, mana ike nke ihe e ji eme brazing dị mma, ọ dịkwa mfe ịtụgharị ihe e ji eme brazing na ihe e ji eme metal nke bụ isi, yabụ ọ dabara nke ọma maka ihe e ji eme brazing titanium alloy radiator, nhazi mmanụ aṅụ na nhazi laminate.
Mmiri ndị dabere na titanium ma ọ bụ titanium zirconium na-enwekarị Cu, Ni na ihe ndị ọzọ, nke nwere ike ịgbasa ngwa ngwa n'ime matrix ma meghachi omume na titanium n'oge brazing, na-ebute mmebi matrix na ịmepụta oyi akwa na-agbawa agbawa. Ya mere, a ga-achịkwa okpomọkụ brazing na oge ijide ya nke ọma n'oge brazing, ekwesighikwa iji ya mee brazing nke ihe owuwu dị gịrịgịrị ruo n'ókè o kwere mee. B-ti48zr48be bụ ihe a na-ejikarị eme ihe na Ti Zr solder. Ọ nwere ezigbo mmiri mmiri na titanium, ígwè ntọala anaghịkwa eto eto n'oge brazing.
(2) Ọla e ji eme ihe maka zirconium na ihe ndị e ji eme ihe maka ... n'ike nuklia.
(3) Ọgba aghara na ikuku nchebe titanium, zirconium na ihe ndị dị n'okpuru ala nwere ike inweta nsonaazụ dị mma na ikuku vacuum na ikuku na-adịghị arụ ọrụ (helium na argon). A ga-eji argon dị ọcha nke ukwuu maka brazing argon nke a na-echebe, ebe igirigi ga-adịkwa -54 ℃ ma ọ bụ karịa. A ga-eji flux pụrụ iche nwere fluoride na chloride nke ígwè Na, K na Li maka brazing ọkụ.
2. Teknụzụ ịme brazing
Tupu a na-asacha ihe mkpuchi ahụ, a ga-asacha elu ya nke ọma, tee ya mmanụ ma wepụ ihe mkpuchi oxide. A ga-ewepụ ihe mkpuchi oxide dị arọ site na usoro igwe, usoro ịgba ájá ma ọ bụ usoro ịsa ahụ nnu gbazere agbaze. Enwere ike iwepụ ihe mkpuchi oxide dị gịrịgịrị na mmiri nwere 20% ~ 40% nitric acid na 2% hydrofluoric acid.
A naghị ekwe ka Ti, Zr na ihe ndị ọzọ ha metụ elu nkwonkwo ahụ na ikuku n'oge a na-ekpo ọkụ brazing. Enwere ike ime brazing n'okpuru nchebe nke vacuum ma ọ bụ gas na-adịghị arụ ọrụ. Enwere ike iji ọkụ induction ugboro ugboro ma ọ bụ kpo oku na-ekpo ọkụ. Igwe ọkụ induction bụ ụzọ kachasị mma maka obere akụkụ ndị yiri ya, ebe brazing n'ime ọkụ bara uru karịa maka akụkụ buru ibu na nke dị mgbagwoju anya.
A ga-ahọrọ Ni Cr, W, Mo, Ta na ihe ndị ọzọ dị ka ihe na-ekpo ọkụ maka brazing Ti, Zr na ihe ndị ọzọ ha. Agaghị eji ngwa nwere graphite a na-ekpughere dị ka ihe na-ekpo ọkụ iji zere mmetọ carbon. A ga-eji ihe ndị nwere ike dị elu, ihe ndị yiri Ti ma ọ bụ Zr, na obere mmeghachi omume na ígwè ntọala mee ihe nkwụnye brazing.
Oge ozi: Jun-13-2022