Kedu maka mmetụta ịgbado ọkụ nke ọkụ brazing vacuum?

Kedu maka mmetụta ịgbado ọkụ nke ọkụ brazing vacuum?

Usoro brazing n'ime oven vacuum bụ usoro brazing ọhụrụ na-enweghị flux n'okpuru ọnọdụ vacuum. Ebe ọ bụ na brazing dị n'ebe a na-anaghị ahụ anya, enwere ike iwepụ mmetụta ọjọọ nke ikuku na workpiece nke ọma, yabụ enwere ike ime brazing nke ọma na-enweghị itinye flux. A na-ejikarị ya eme ihe maka ọla brazing na alloys ndị siri ike brazing, dị ka aluminum alloys, titanium alloys, alloys okpomọkụ dị elu, alloys refractory na seramiiki. Njikọ brazing ahụ na-egbuke egbuke ma dị obere, nwere ezigbo ihe onwunwe igwe na iguzogide corrosion. A naghị eji ngwa brazing vacuum eme ihe maka ịgbado agịga nke ígwè carbon na obere alloy metal.

Ngwa eji eme brazing n'ime oven vacuum nwere ihe mejupụtara ya bụ oven brazing vacuum na sistem vacuum. E nwere ụdị oven brazing vacuum abụọ: oven ọkụ na-ekpo ọkụ na oven oyi. Enwere ike iji gas ma ọ bụ ọkụ eletrik kpoo ụdị oven abụọ ahụ ọkụ, a pụkwara ime ha ka ha bụrụ oven dị n'akụkụ, oven dị n'okpuru ma ọ bụ oven dị n'elu (ụdị Kang). Enwere ike iji sistemu vacuum ahụ mee ihe n'ozuzu ya.

Sistemụ vacuum gụnyere ihe eji asa ihe, ọkpọkọ vacuum, valvụ valu, wdg. A na-ejikarị ihe eji asa ihe na-asa ihe na-asa ihe na-asa ihe na-asa ihe. Naanị ihe eji asa ihe na-asa ...

Ịkwanye ihe n'ime ọkụ ikuku bụ iji ọkụ n'ime ọkụ ma ọ bụ ụlọ ọkụ site na iji ikuku ewepụtara. Ọ dabara nke ọma maka ịgbanye ihe n'ime nnukwu na nke na-aga n'ihu, ọ dịkwa mma maka ijikọ ụfọdụ ọla pụrụ iche, gụnyere titanium, zirconium, niobium, molybdenum na tantalum. O nwere ọtụtụ ojiji. Agbanyeghị, ịgbanye ihe n'ime ikuku nwekwara ọghọm ndị a:

① Ọ dị mfe ịgbaze ígwè ahụ n'okpuru ikuku, yabụ ọ dịghị mma iji ihe mkpuchi ikuku maka ígwè ntọala na ihe ndozi nke ihe ndị na-agbanwe agbanwe. Ọ bụrụ na ọ dị mkpa iji ya, a ga-eji usoro nhazi dị mgbagwoju anya kwekọrọ.

② Brazing vacuum na-enwe mmetụta maka ịdị njọ elu, ịdị mma nke nzukọ na nnabata kwesịrị ekwesị nke akụkụ brazed, ọ chọkwara ọkwa dị elu nke gburugburu ebe ọrụ na ndị ọrụ.

③ Ngwa vacuum dị mgbagwoju anya, yana nnukwu itinye ego otu oge na nnukwu ụgwọ mmezi.

Yabụ, kedu ka esi etinye usoro brazing n'ime ọkụ vacuum? Mgbe a na-eme brazing n'ime ọkụ vacuum, a ga-ebunye ihe mkpuchi a ga-agbakọta n'ime ọkụ (ma ọ bụ n'ime arịa brazing), a ga-emechi ọnụ ụzọ ọkụ (ma ọ bụ mechie mkpuchi arịa brazing), ma kpoo ya tupu ọ kpoo ọkụ. Malite mgbapụta igwe ahụ mbụ, tụgharịa valvụ steering mgbe ogo vacuum ahụ ruru 1.35pa, mechie ụzọ kpọmkwem n'etiti mgbapụta igwe na ọkụ brazing, mee ka ọkpọkọ ahụ jikọtara na ọkụ brazing site na mgbapụta mgbasa, dabere na mgbapụta igwe na ọkpọkọ mgbasa ka ha rụọ ọrụ n'ime oge a kapịrị ọnụ, gbanye ọkụ brazing ahụ ruo ogo vacuum achọrọ, wee malite ike na ọkụ.

N'oge usoro okpomọkụ na-arị elu ma na-ekpo ọkụ, ihe mkpuchi ikuku ga-anọgide na-arụ ọrụ iji nọgide na-enwe ọkwa ikuku dị n'ime ọkụ ahụ, na-ebelata ntapụ ikuku na njikọ dị iche iche nke sistemụ ikuku na ọkụ ọkụ, ntọhapụ nke gas na uzuoku a na-etinye na mgbidi ọkụ, ihe nkwụnye na njikọta, volatilization nke metal na oxide, wdg, iji belata ikuku ezi. E nwere ụdị brazing vacuum abụọ: brazing vacuum dị elu na brazing partial (vecuum dị ọkara). Brazing vacuum dị elu dabara adaba maka brazing metal ntọala nke oxide ya siri ike ire ere (dịka nickel base superalloy). A na-eji brazing vacuum akụkụ maka oge ebe metal ntọala ma ọ bụ metal jupụtara na-agbaze n'okpuru okpomọkụ brazing na ọnọdụ vacuum dị elu.

Ọ bụrụ na a ga-emerịrị ihe pụrụ iche iji hụ na ọ dị ọcha nke ukwuu, a ga-eji usoro nhicha ikuku eme ihe tupu a na-eme ka ọ dị ọcha nke ọma. N'otu aka ahụ, iji usoro nhicha hydrogen kpọrọ nkụ ma ọ bụ gas na-adịghị arụ ọrụ tupu a na-eme ka ọ dị ọcha ga-enyere aka nweta nsonaazụ ka mma na ime ka ọ dị ọcha nke ọma.