Kuwotcha kwa Beryllium-Copper Alloys

Beryllium mkuwa umapereka kukana kwa dzimbiri, madutsidwe amagetsi ndi matenthedwe matenthedwe, kuphatikiza mphamvu yayikulu komanso kukana kutentha kwambiri.Zopanda moto komanso zopanda maginito, ndizothandiza m'mafakitale amigodi ndi petrochemical.Ndi kukana kwambiri kutopa, mkuwa wa beryllium umagwiritsidwanso ntchito ngati akasupe, zolumikizira ndi mbali zina zomwe zimatengera kunyamula kwa cyclical.

Brazing beryllium copper ndi yotsika mtengo ndipo imapangidwa mosavuta popanda kufooketsa alloy.Beryllium-copper alloys amapezeka m'magulu awiri: C17000 yapamwamba kwambiri, C17200 ndi C17300;ndi high-conductivity C17410, C17450, C17500 ndi C17510.Kutentha kwamankhwala kumalimbitsa ma alloys awa.

Metallurgy

Kutentha kwa brazing kwa beryllium-copper alloys nthawi zambiri kumakhala pamwamba pa kutentha kosaumitsa zaka komanso kumakhala kofanana ndi kutentha kwa yankho.

Njira zambiri zopangira kutentha kwa beryllium-copper alloys ndi izi:

Choyamba, alloy ayenera kutsukidwa.Izi zimatheka ndi kusungunula alloy mu njira yolimba kotero kuti idzakhalapo pa sitepe yowumitsa zaka.Pambuyo pa njira yothetsera, aloyiyo imakhazikika mofulumira kuti itenthe kutentha ndi kuzimitsidwa ndi madzi kapena kugwiritsa ntchito mpweya wokakamiza pazigawo zopyapyala.

Chotsatira ndikuumitsa ukalamba, pomwe tinthu tating'onoting'ono tating'ono, tolimba, tinthu tating'onoting'ono ta beryllium timapangidwa muzitsulo zachitsulo.Nthawi yokalamba ndi kutentha zimatsimikizira kuchuluka ndi kugawa kwa tinthu tating'onoting'ono mkati mwa matrix.Zotsatira zake ndikuwonjezeka kwamphamvu kwa alloy.

Maphunziro a Aloyi

1. Mkuwa wa beryllium wamphamvu kwambiri - Beryllium mkuwa nthawi zambiri umagulidwa mumkhalidwe wosakanikirana.Aneal iyi imakhala ndi kutentha kwa 1400-1475 ° F (760-800 ° C), kutsatiridwa ndi kuzimitsa mwamsanga.Brazing ikhoza kukwaniritsidwa mwina munjira yotentha-yowonjezera kutentha-motsatiridwa ndi kuzimitsa-kapena ndi kutentha kofulumira kwambiri pansi pa izi, popanda kukhudza momwe yankho likuyendera.Kupsa mtima kumapangidwa ndi kukalamba pa 550-700 ° F (290-370 ° C) kwa maola awiri mpaka atatu.Ndi ma aloyi ena a beryllium okhala ndi cobalt kapena faifi tambala, chithandizo cha kutentha chimasiyana.

2. High-conductivity beryllium copper - Zomwe zimagwiritsidwa ntchito kwambiri m'makampani ndi 1.9% beryllium-balance copper.Komabe, imatha kuperekedwa ndi beryllium yosakwana 1%.Ngati kuli kotheka, aloyi wocheperako wa beryllium ayenera kugwiritsidwa ntchito kuti apeze zotsatira zabwino kwambiri.Anneal ndi kutentha kwa 1650-1800 ° F (900-980 ° C), kutsatiridwa ndi kuzimitsa mwamsanga.Kupsa mtima kumapangidwa ndi kukalamba pa 850-950 ° F (455-510 ° C) kwa ola limodzi mpaka asanu ndi atatu.

Kuyeretsa

Ukhondo ndi wofunika kwambiri kuti munthu achite bwino.Kutsuka malo opangira braze-faying kuti muchotse mafuta ndi mafuta ndikofunikira pakuchita bwino kujowina.Dziwani kuti njira zoyeretsera ziyenera kusankhidwa potengera mafuta kapena mafuta amafuta;si njira zonse zoyeretsera zomwe zimagwira ntchito mofananamo kuchotsa mafuta onse ndi/kapena zodetsa.Dziwani zowononga pamtunda, ndipo funsani wopanga njira zoyenera zoyeretsera.Kutsuka ma abrasive kapena pickling acid kumachotsa zinthu zotulutsa okosijeni.

Pambuyo poyeretsa zigawo, sungani nthawi yomweyo ndi flux kuti muteteze chitetezo.Ngati zigawo ziyenera kusungidwa, mbali zitha kutetezedwa ndi electroplate yagolide, siliva kapena faifi tambala mpaka 0.0005 ″ (0.013 mm).Kupaka kungagwiritsidwe ntchito kuwongolera kunyowetsa pamwamba pa beryllium-mkuwa ndi zitsulo zodzaza.Zonse zamkuwa ndi siliva zitha kukutidwa 0.0005-0.001 ″ (0.013-0.025mm) kubisa ma oxide ovuta kunyowa opangidwa ndi mkuwa wa beryllium.Pambuyo pakuwotcha, chotsani zotsalira za flux ndi madzi otentha kapena maburashi amakina kuti zisawonongeke.

Kuganizira Mapangidwe

Kulowetsedwa kophatikizana kuyenera kulola kutulutsa kuthawa komanso kupereka capillarity yokwanira, kutengera chemistry yazitsulo zosankhidwa.Kuloledwa kwa yunifolomu kuyenera kukhala 0.0015-0.005 ″ (0.04-0.127mm).Kuthandizira kuchotsa kusuntha kuchokera m'malo olumikizirana mafupa-makamaka mapangidwe olowa omwe amagwiritsa ntchito mizere yolowera m'malo kapena mizere yoyambira - kusuntha kwa gawo limodzi lolumikizana ndi linalo kapena / kapena kugwedezeka kungagwiritsidwe ntchito.Kumbukirani kuwerengetsa zololedwa pamapangidwe ophatikizana potengera kutentha komwe kukuyembekezeredwa.Kuphatikiza apo, kukulitsa kwa mkuwa wa beryllium ndi 17.0 x 10-6/°C.Ganizirani zamitundu yopangidwa ndi thermally pophatikiza zitsulo zokhala ndi mphamvu zokulitsa matenthedwe.