Muaj ob hom beryllium tooj liab alloys.Lub zog muaj zog beryllium tooj liab alloys (Alloys 165, 15, 190, 290) muaj lub zog siab dua li cov tooj liab alloy thiab tau siv dav hauv cov khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob.Cov hluav taws xob thiab thermal conductivity ntawm no high-strength alloy yog hais txog 20% ​​ntawm cov ntshiab tooj liab;high-conductivity beryllium tooj liab alloys (alloys 3.10 thiab 174) muaj zog qis dua, thiab lawv cov hluav taws xob conductivity yog li 50% ntawm cov tooj liab ntshiab, siv rau cov khoom siv hluav taws xob thiab cov relays.Lub zog siab beryllium tooj liab alloys yooj yim dua rau kev tiv thaiv vuam vim lawv cov hluav taws xob qis dua (lossis siab dua resistivity).
Beryllium tooj liab tau txais nws lub zog siab tom qab kev kho cua sov, thiab ob qho tib si beryllium tooj liab alloys tuaj yeem nkag rau hauv pre-rhuab los yog kub-kho lub xeev.Vuam ua haujlwm feem ntau yuav tsum tau muab rau hauv qhov chaw kho cua sov.Kev ua haujlwm vuam feem ntau yuav tsum tau ua tom qab kev kho cua sov.Hauv kev ua haujlwm vuam ntawm beryllium tooj liab, lub tshav kub cuam tshuam yog feem ntau me me, thiab nws tsis tas yuav muaj beryllium tooj liab workpiece rau kev kho cua sov tom qab vuam.Alloy M25 yog cov khoom siv dawb-txiav beryllium tooj liab qws.Txij li cov hlau no muaj cov hlau lead, nws tsis haum rau kev ua haujlwm vuam.
Resistance qhov chaw vuam
Beryllium tooj liab muaj qis resistivity, siab dua thermal conductivity thiab coefficient ntawm expansion dua hlau.Zuag qhia tag nrho, beryllium tooj liab muaj tib yam lossis siab zog dua li cov hlau.Thaum siv qhov chaw vuam (RSW) beryllium tooj liab nws tus kheej los yog beryllium tooj liab thiab lwm yam alloys, siv cov vuam tam sim no ntau dua, (15%), qis voltage (75%) thiab luv vuam lub sij hawm (50%).Beryllium tooj liab tiv taus cov vuam siab dua li lwm cov tooj liab alloys, tab sis cov teeb meem kuj tuaj yeem tshwm sim los ntawm kev kub siab uas qis dhau.
Yuav kom tau txais cov txiaj ntsig zoo sib xws hauv cov khoom siv tooj liab, cov khoom siv vuam yuav tsum muaj peev xwm tswj tau lub sijhawm thiab tam sim no, thiab AC vuam cov cuab yeej yog qhov nyiam vim nws qhov kub thiab txias ntawm electrode.Vuam lub sij hawm ntawm 4-8 cycles ua tau zoo dua.Thaum welding hlau nrog zoo sib xws expansion coefficients, qaij vuam thiab overcurrent welding tuaj yeem tswj qhov nthuav dav ntawm cov hlau kom txwv tsis pub muaj kev phom sij ntawm vuam tawg.Beryllium tooj liab thiab lwm yam tooj liab alloys yog welded tsis tilting thiab overcurrent vuam.Yog hais tias inclined welding thiab overcurrent welding yog siv, tus naj npawb ntawm lub sij hawm nyob ntawm seb lub thickness ntawm lub workpiece.
Nyob rau hauv qhov chaw tsis kam vuam beryllium tooj liab thiab hlau, los yog lwm yam hlau tsis kam, zoo thermal tshuav nyiaj li cas tuaj yeem tau los ntawm kev siv electrodes nrog me me ntawm qhov chaw ntawm beryllium tooj liab sab.Cov khoom siv electrode nyob rau hauv kev sib cuag nrog beryllium tooj liab yuav tsum muaj ib tug siab conductivity tshaj lub workpiece, ib tug RWMA2 pab pawg neeg qib electrode yog haum.Refractory hlau electrodes (tungsten thiab molybdenum) muaj cov ntsiab lus melting siab heev.Tsis muaj qhov xav tau los lo rau beryllium tooj liab.13 thiab 14 ncej electrodes kuj muaj.Qhov zoo ntawm cov hlau refractory yog lawv lub neej ua haujlwm ntev.Txawm li cas los xij, vim qhov hardness ntawm xws li alloys, qhov chaw puas tuaj yeem ua tau.Dej-txias electrodes yuav pab tswj qhov kub thiab txias lub neej ntawm electrode.Txawm li cas los xij, thaum vuam ntu nyias ntawm beryllium tooj liab, kev siv cov dej txias electrodes tuaj yeem ua rau quenching ntawm cov hlau.
Yog hais tias lub thickness sib txawv ntawm lub beryllium tooj liab thiab lub siab resistivity alloy yog ntau tshaj 5, projection welding yuav tsum tau siv vim tsis muaj cov tswv yim thermal tshuav nyiaj li cas.