Kupisa kweBeryllium-Copper Alloys

Beryllium mhangura inopa yakakwira corrosion resistance, magetsi conductivity uye thermal conductivity, pamwe nesimba rakakwirira uye kuramba kutonhora kwakanyanya.Isiri-inopenya uye isiri-magnetic, inobatsira mumigodhi uye petrochemical maindasitiri.Nekupokana kwakanyanya kuneta, beryllium mhangura inoshandiswawo kune zvitubu, zvinongedzo uye zvimwe zvikamu zviri pasi pe cyclical kurodha.

Brazing beryllium mhangura inenge isingadhuri uye inoitwa zviri nyore pasina kunetesa alloy.Beryllium-copper alloys inowanikwa mumakirasi maviri: high-simba C17000, C17200 uye C17300;uye high-conductivity C17410, C17450, C17500 uye C17510.Thermal kurapwa inowedzera kusimbisa aya alloys.

Metallurgy

Kupisa tembiricha yeberyllium-copper alloys kazhinji iri pamusoro peiyo tembiricha yekuomesa zera uye yakangofanana neyakagadziriswa-yekupisa tembiricha.

Matanho akajairika ekupisa kurapa beryllium-copper alloys anotevera:

Kutanga, iyo alloy inofanira kunge yakagadziriswa.Izvi zvinopedzwa nekunyungudutsa alloy kuita yakasimba mhinduro saka ichave iripo kune zera rekuomesa nhanho.Mushure mekugadzirisa annealing, alloy inokurumidza kutonhodzwa kusvika kukamuri tembiricha nekudzima kwemvura kana kushandisa mhepo yekumanikidza yezvikamu zvitete.

Danho rinotevera kuomesa zera, apo sub-microscopic, yakaoma, beryllium-rich particles inoumbwa musimbi matrix.Nguva yekukwegura uye tembiricha zvinotarisa huwandu uye kugoverwa kwezvikamu izvi mukati me matrix.Mhedzisiro inowedzera simba realloy.

Alloy Makirasi

1. High-simba beryllium mhangura - Beryllium mhangura inowanzotengwa mukugadzirisa-annealed condition.Iyi anneal inosanganisira kudziyisa kusvika 1400-1475 ° F (760-800 ° C), ichiteverwa nekudzima nekukurumidza.Brazing inogona kuitwa chero mumhinduro-yekupisa tembiricha yemhando-inoteverwa nekudzima-kana nekukurumidza kupisa pazasi renji iyi, pasina kukanganisa mamiriro ekugadzirisa-annealed.Hasha dzinobva dzagadzirwa nekuchembera pa550-700°F (290-370°C) kwemaawa maviri kusvika matatu.Nemamwe maberyllium alloys ane cobalt kana nickel, kurapwa kwekupisa kunogona kusiyana.

2. High-conductivity beryllium mhangura - Kuumbwa kunonyanya kushandiswa mumaindasitiri ndeye 1.9% beryllium-balance copper.Nekudaro, inogona kupihwa isingasviki 1% beryllium.Pazvinogoneka, iyo shoma-beryllium-yemukati alloy inofanirwa kushandiswa kune yakanakisa brazing mhedzisiro.Anneal nekudziya kusvika 1650-1800 ° F (900-980 ° C), inoteverwa nekudzima nekukurumidza.Hasha dzinobva dzagadzirwa nekuchembera pa850-950 ° F (455-510 ° C) kweawa imwe kusvika masere.

Kuchenesa

Rucheno rwakakosha kuti ubudirire pakubhuroka.Pre-kuchenesa nzvimbo dzebraze-faying kubvisa mafuta uye girizi kwakakosha pakuita kwakanaka kujoinha.Ziva kuti nzira dzekuchenesa dzinofanirwa kusarudzwa zvichienderana nemafuta kana girisi chemistry;hadzisi dzese nzira dzekuchenesa dzinoshanda zvakafanana mukubvisa mafuta ese uye / kana girizi inosvibisa.Ziva tsvina yepasi, uye bata mugadziri wenzira dzakakodzera dzekuchenesa.Abrasive brushing kana acid pickling inobvisa oxidation zvigadzirwa.

Mushure mekuchenesa zvikamu, sunga nekukurumidza ne flux kuti upe dziviriro.Kana zvikamu zvichifanira kuchengetwa, zvikamu zvinogona kuchengetedzwa ne electroplate yegoridhe, sirivheri kana nickel kusvika 0.0005 ″ (0.013 mm).Plating inogona kushandiswa kufambisa kunyorova kweberyllium-mhangura pamusoro nesimbi yekuzadza.Zvose mhangura nesirivheri zvinogona kuiswa 0.0005-0.001 ″ (0.013-0.025mm) kuvanza yakaoma-kunyorova oxides inoumbwa neberyllium copper.Mushure mekugadzira, bvisa masara emvura inopisa kana mechanical brushing kuti usaora.

Kufunga Kwekugadzira

Joint clearances inofanira kubvumira flux kutiza uye zvakare inopa yakakwana capillarity, zvichienderana nekuzadza-simbi chemistry yakasarudzwa.Kubvumidzwa kwakafanana kunofanirwa kuve 0.0015-0.005 ″ (0.04-0.127mm).Kubatsira mukubvisa flux kubva pamajoini-kunyanya ayo madhizaini anoshandisa tambo yakatsikwa kana mitsetse preforms-kufamba kweimwe faying nzvimbo nekuremekedza kune imwe uye/kana vibration inogona kushandiswa.Rangarira kuverengera kubvumidzwa kweiyo majoini dhizaini zvichibva pane inotarisirwa kupisa tembiricha.Pamusoro pezvo, beryllium copper yekuwedzera coefficient i17.0 x 10-6/°C.Funga nezvemhando dzakakonzerwa nemafuta paunenge uchibatanidza simbi dzine zvakasiyana-siyana zvekuwedzera kupisa.