Resistance welding ndi njira yodalirika, yotsika mtengo, komanso yothandiza kwambiri yolumikizira zitsulo ziwiri kapena zingapo pamodzi.Ngakhale kuwotcherera kukana ndi njira yowotcherera, palibe zitsulo zodzaza, palibe mpweya wowotcherera.Palibe chitsulo chowonjezera chochotsa pambuyo pakuwotcherera.Njirayi ndi yoyenera kupanga zambiri.Ma welds ndi olimba komanso osawoneka bwino.

M'mbuyomu, kuwotcherera kukana kwagwiritsidwa ntchito bwino kulumikiza zitsulo zolimba kwambiri monga chitsulo ndi nickel alloys.Kukwera kwamagetsi ndi kutentha kwazitsulo zamkuwa kumapangitsa kuwotcherera kukhala kovuta kwambiri, koma zida zowotcherera wamba nthawi zambiri zimatha kupanga izi The alloy imakhala ndi weld wabwino kwambiri.Ndi njira zoyenera zowotcherera, mkuwa wa beryllium ukhoza kuwotcherera pawokha, kuzitsulo zina zamkuwa, ndi chitsulo.Zosakaniza zamkuwa zosakwana 1.00mm zokhuthala nthawi zambiri zimakhala zosavuta kuwotcherera.

Njira zowotcherera zokana zomwe zimagwiritsidwa ntchito kwambiri pakuwotcherera zida zamkuwa za beryllium, kuwotcherera mawanga ndi kuwotcherera.Makulidwe a chogwirira ntchito, zida za alloy, zida zomwe zimagwiritsidwa ntchito komanso mawonekedwe apansi omwe amafunikira zimatsimikizira kuyenera kwa njirayo.Njira zina zowotcherera zomwe zimagwiritsidwa ntchito nthawi zambiri, monga kuwotcherera moto, kuwotcherera matako, kuwotcherera kwa msoko, ndi zina zambiri, sizimagwiritsidwa ntchito kwambiri popangira zida zamkuwa ndipo sizidzakambidwa.Ma alloys amkuwa ndi osavuta kuwomba.

Makiyi mu kukana kuwotcherera ndi apano, kuthamanga ndi nthawi.Mapangidwe a ma elekitirodi ndi kusankha kwa ma elekitirodi ndi zofunika kwambiri pa chitsimikizo cha kuwotcherera.Popeza pali mabuku ambiri okhudzana ndi kuwotcherera chitsulo, zofunikira zingapo zowotcherera mkuwa wa beryllium zomwe zaperekedwa apa zikuyimira makulidwe omwewo.Kuwotcherera kukana si sayansi yolondola, ndipo zida ndi njira zowotcherera zimakhudza kwambiri mtundu wa kuwotcherera.Choncho, anapereka pano monga kalozera yekha, mndandanda wa mayesero kuwotcherera angagwiritsidwe ntchito kudziwa momwe akadakwanitsira kuwotcherera zinthu ntchito iliyonse.

Chifukwa chakuti zonyansa zambiri zapa workpiece zimakhala ndi mphamvu zambiri zamagetsi, pamwamba pake ziyenera kutsukidwa nthawi zonse.Malo oipitsidwa amatha kuonjezera kutentha kwa electrode, kuchepetsa moyo wa nsonga ya electrode, kupangitsa kuti pamwamba pake zisagwiritsidwe ntchito, ndikupangitsa chitsulo kuchoka kumalo owotcherera.kuyambitsa kuwotcherera zabodza kapena zotsalira.Kanema wowonda kwambiri wamafuta kapena zosungira zimayikidwa pamwamba, zomwe nthawi zambiri sizikhala ndi vuto ndi kuwotcherera kukana, ndipo mkuwa wa beryllium wopangidwa pamwamba umakhala ndi zovuta zochepa pakuwotcherera.

Mkuwa wa Beryllium wokhala ndi mafuta ochulukirapo osapaka mafuta kapena opaka kapena masitampa amatha kutsukidwa ndi zosungunulira.Ngati pamwamba ndi dzimbiri kwambiri kapena pamwamba ndi oxidized ndi kuwala kutentha mankhwala, ayenera kutsukidwa kuchotsa okusayidi.Mosiyana kwambiri ndi zowoneka mofiira-bulauni mkuwa okusayidi, mandala beryllium okusayidi pamwamba Mzere (opangidwa ndi kutentha mankhwala mu inert kapena kuchepetsa mpweya) n'kovuta kuzindikira, koma ayenera kuchotsedwa pamaso kuwotcherera.

Beryllium Copper Alloy

Pali mitundu iwiri yazitsulo zamkuwa za beryllium.Ma aloyi amkuwa amphamvu kwambiri a beryllium (Alloys 165, 15, 190, 290) ali ndi mphamvu zambiri kuposa aloyi amkuwa ndipo amagwiritsidwa ntchito kwambiri pazolumikizira zamagetsi, masiwichi ndi akasupe.Mphamvu yamagetsi ndi matenthedwe aloyi yamphamvu kwambiri iyi ndi pafupifupi 20% ya mkuwa wangwiro;high-conductivity beryllium copper alloys (aloyi 3.10 ndi 174) ali ndi mphamvu zochepa, ndipo mphamvu zawo zamagetsi zimakhala pafupifupi 50% za mkuwa wangwiro, womwe umagwiritsidwa ntchito pogwirizanitsa mphamvu ndi ma relay.Mphamvu zapamwamba za beryllium zamkuwa ndizosavuta kukana kuwotcherera chifukwa cha kutsika kwawo kwamagetsi (kapena resistivity yapamwamba).

Mkuwa wa Beryllium umalandira mphamvu zake zambiri pambuyo pa chithandizo cha kutentha, ndipo ma alloy amkuwa onse a beryllium amatha kuperekedwa mumkhalidwe wotenthedwa kapena kutentha.Zowotcherera ziyenera kuperekedwa pamalo otetezedwa ndi kutentha.The kuwotcherera ntchito zambiri ayenera kuchitidwa pambuyo kutentha mankhwala.Pokana kuwotcherera mkuwa wa beryllium, malo omwe amakhudzidwa ndi kutentha nthawi zambiri amakhala ochepa kwambiri, ndipo sikofunikira kukhala ndi zida zamkuwa za beryllium zopangira kutentha pambuyo pakuwotcherera.Aloyi M25 ndi chida chamkuwa chodula cha beryllium.Popeza aloyiyi ili ndi lead, siyenera kuwotcherera kukana.

Kukaniza malo kuwotcherera

Mkuwa wa Beryllium uli ndi mphamvu yotsika, yotsika matenthedwe matenthedwe komanso kukulirakulira kuposa chitsulo.Zonsezi, mkuwa wa beryllium uli ndi mphamvu zofanana kapena zapamwamba kuposa zitsulo.Mukamagwiritsa ntchito kukana kuwotcherera malo (RSW) beryllium mkuwa wokha kapena mkuwa wa beryllium ndi ma aloyi ena, gwiritsani ntchito kuwotcherera kwapamwamba, (15%), voteji yotsika (75%) ndi nthawi yaifupi yowotcherera (50%) .Mkuwa wa Beryllium umalimbana ndi zovuta zowotcherera kwambiri kuposa ma aloyi ena amkuwa, koma mavuto amathanso kuyambika chifukwa chotsika kwambiri.

Kuti mupeze zotsatira zofananira mu ma aloyi amkuwa, zida zowotcherera ziyenera kuwongolera bwino nthawi ndi zamakono, ndipo zida zowotcherera za AC zimakondedwa chifukwa cha kutentha kwake kwa electrode komanso kutsika mtengo.Nthawi zowotcherera zozungulira 4-8 zimabweretsa zotsatira zabwino.Pamene kuwotcherera zitsulo ndi coefficients ofanana kukula, kupendekeka kuwotcherera ndi overcurrent kuwotcherera akhoza kulamulira kukula kwa chitsulo kuchepetsa ngozi zobisika za kuwotcherera ming'alu.Beryllium mkuwa ndi ma aloyi ena amkuwa amawotcherera popanda kupendekeka komanso kuwotcherera mopitilira muyeso.Ngati kuwotcherera ndi kuwotcherera kopitilira muyeso kumagwiritsidwa ntchito, kuchuluka kwa nthawi kumatengera makulidwe a workpiece.

Powotcherera pamalo okana a beryllium mkuwa ndi chitsulo, kapena ma aloyi ena olimba kwambiri, kutentha kwabwinoko kumatha kupezeka pogwiritsa ntchito maelekitirodi okhala ndi malo ang'onoang'ono olumikizana mbali imodzi ya mkuwa wa beryllium.Elekitirodi zakuthupi kukhudzana ndi beryllium mkuwa ayenera kukhala apamwamba madutsidwe kuposa workpiece, RWMA2 gulu elekitirodi ndi oyenera.Maelekitirodi achitsulo osakanizidwa (tungsten ndi molybdenum) ali ndi malo osungunuka kwambiri.Palibe chizolowezi chomamatira mkuwa wa beryllium.13 ndi 14 pole maelekitirodi amapezekanso.Ubwino wa zitsulo zotsutsa ndi moyo wawo wautali wautumiki.Komabe, chifukwa cha kuuma kwa ma alloys oterowo, kuwonongeka kwa pamwamba kungakhale kotheka.Ma electrode oziziritsidwa ndi madzi amathandizira kuwongolera kutentha kwa nsonga ndikutalikitsa moyo wa elekitirodi.Komabe, powotcherera zigawo zoonda kwambiri za mkuwa wa beryllium, kugwiritsa ntchito maelekitirodi oziziritsidwa ndi madzi kungachititse kuti chitsulocho chizimitsidwe.

Ngati kusiyana kwa makulidwe pakati pa mkuwa wa beryllium ndi aloyi yapamwamba ya resistivity ndi yayikulu kuposa 5, kuwotcherera kwa projekiti kuyenera kugwiritsidwa ntchito chifukwa chosowa mphamvu yogwiritsira ntchito matenthedwe.

Resistance projection welding

Mavuto ambiri amkuwa wa beryllium pakuwotcherera malo amatha kuthetsedwa ndi resistance projection welding (RpW).Chifukwa cha malo ake ang'onoang'ono omwe amakhudzidwa ndi kutentha, ntchito zingapo zitha kuchitika.Zitsulo zosiyana za makulidwe osiyanasiyana ndizosavuta kuwotcherera.Ma elekitirodi okulirapo ndi mawonekedwe osiyanasiyana a elekitirodi amagwiritsidwa ntchito powotcherera projekiti kuti achepetse kupunduka ndi kumamatira.Electrode conductivity ilibe vuto pang'ono poyerekeza ndi kuwotcherera kwa malo osakanizidwa.Zomwe zimagwiritsidwa ntchito ndi 2, 3, ndi 4-pole electrode;kulimba kwa electrode, moyo wautali.

Zosakaniza zamkuwa zofewa sizimawotcherera kukana, mkuwa wa beryllium ndi wolimba mokwanira kuti uteteze kusweka msanga ndikupereka weld wathunthu.Mkuwa wa Beryllium ukhozanso kukhala wowotcherera pa makulidwe ochepera 0.25mm.Monga momwe zimakhalira ndi kuwotcherera malo, zida za AC nthawi zambiri zimagwiritsidwa ntchito.

Pamene soldering zitsulo zosiyana, tokhala amakhala apamwamba conductive aloyi.Mkuwa wa Beryllium ndi wonyezimira wokhoza kukhomerera kapena kutulutsa pafupifupi mawonekedwe aliwonse otambasuka.Kuphatikizirapo mawonekedwe akuthwa kwambiri.The beryllium mkuwa workpiece ayenera kupangidwa pamaso kutentha mankhwala kupewa kulimbana.

Monga kuwotcherera pamalo okana, njira zowotcherera za beryllium mkuwa zimafunikira kuchuluka kwamphamvu.Mphamvuyo iyenera kukhala yamphamvu kwakanthawi komanso yokwera mokwanira kuti isungunuke isanaphwanyike.Kuthamanga kwa kuwotcherera ndi nthawi zimasinthidwa kuti zithetse kusweka.Kuthamanga kwa kuwotcherera ndi nthawi kumadaliranso kugunda kwa geometry.Kuthamanga kophulika kudzachepetsa kuwonongeka kwa weld isanayambe kapena itatha kuwotcherera.

Kusamalira Motetezedwa kwa Beryllium Copper

Mofanana ndi zipangizo zambiri zamafakitale, mkuwa wa beryllium ndi ngozi yathanzi pokhapokha itagwiritsidwa ntchito molakwika.Mkuwa wa Beryllium ndi wotetezeka kwathunthu mu mawonekedwe ake okhazikika, m'magawo omalizidwa, komanso m'ntchito zambiri zopanga.Komabe, mwa anthu ochepa chabe, kupuma kwa tinthu tating'onoting'ono kumatha kupangitsa kuti m'mapapo mukhale osauka.Kugwiritsa ntchito njira zosavuta zowongolera mainjiniya, monga kutulutsa mpweya komwe kumatulutsa fumbi labwino, kungachepetse ngoziyo.

Chifukwa kuwotcherera kusungunula kumakhala kochepa kwambiri komanso kosatseguka, palibe ngozi yapadera pamene njira yowotcherera ya beryllium mkuwa imayendetsedwa.Ngati njira yoyeretsera makina ikufunika pambuyo pa soldering, iyenera kuchitidwa powonetsa ntchitoyo kumalo abwino a tinthu.