A Brazed Silver Contact Assembly ua ke nrog cov nyiaj -raws li kev sib cuag lub taub hau nrog kev txhawb nqa tooj liab los ntawm cov txheej txheem metallurgically bonded brazing. Rau siab -tam sim no Circuit Court breakers, hu rau cov khoom xaiv, brazing kub, sib koom geometry, daim ntawv cog lus- cheeb tsam, thiab post-braze tshuaj xyuas ncaj qha cuam tshuam rau kev tiv thaiv, thermal nce, mechanical retention, thiab arc- yaig tus cwj pwm.
Rau MCCB thiab lwm yam siab -tam sim no hloov cov qauv, lub hom phiaj engineering tsis yog ib qho nyiaj - nplua nuj kev sib cuag. Kev sib dhos ua tiav yuav tsum tswj hwm qhov qis -kuj tam sim no txoj hauv kev thaum tiv thaiv rov qab arc zog, thermal cycling, thiab mechanical loading ntawm kev sib cuag.
MCCB Arc Erosion: IEC 60947-2 thiab High-Current Switching Loads
AgWC thiab AgC cov ntaub ntawv tiv tauj rau Arc Exposure
Thaum muaj kev cuam tshuam, qhov chaw sib cuag tau raug rau cov cua sov hauv zos, kev txuas arc, hloov khoom siv thiab rov ua dua thermal cycling. Yog li ntawd, AgWC thiab AgC systems raug txiav txim siab thaum daim ntawv thov yuav tsum muaj kev sib cuag nyuaj dua li cov nyiaj dawb huv.
Cov qauv tsim tiag tiag yuav tsum raug xaiv raws li qhov ntsuas tam sim no, qhov hluav taws xob, luv luv - lub luag haujlwm cuam tshuam hauv Circuit Court, hloov zaus thiab tiv tauj geometry es tsis yog los ntawm cov khoom siv npe ib leeg.
| Hu rau qhov system | Main khoom yam ntxwv | Kev xav txog engineering | Kev ntsuas tsim nyog |
|---|---|---|---|
| AgWC | Silver matrix nrog tungsten carbide theem | Kev tiv thaiv siab dua rau kev hnav thiab arc- cuam tshuam cov khoom poob | Arc yaig, hardness, tiv taus tiv taus |
| AgC | Silver -carbon composite | Arc tus cwj pwm thiab kev hloov khoom siv yuav tsum raug ntsuas raws li lub voj voog ua haujlwm | Arc yaig, vuam nyiam, tsis kam |
| Ntshiab Ag | High hluav taws xob thiab thermal conductivity | Tsawg hardness thiab ntau dua rhiab heev rau arc mob hnyav | Tiv tauj tsis kam, thermal nce |
| AgSnO₂ | Silver matrix nrog oxide reinforcement | Feem ntau hauv kev hloov daim ntawv thov xav tau arc tsis kam | Vuam, yaig, kub nce |
Rau MCCB kev sib cuag, lub taub hau tiv tauj tsis tuaj yeem ntsuas nws tus kheej los ntawm kev txhawb nqa tooj liab. Cov khoom sib cuag nrog cov arc zoo kuj tseem tuaj yeem tsim ua ntej kev sib dhos tsis ua haujlwm yog tias lub brazed interface muaj qhov tsis muaj, tsis txaus ntub dej lossis thaj chaw tsis txaus.
Tiv tauj Resistance thiab Thermal Rise ntawm IEC 60947 Test Conditions
Kev tiv thaiv tiv thaiv yog cuam tshuam los ntawm qhov chaw saum npoo, kev sib cuag siab, cov khoom siv tawv, kev sib cuag geometry thiab kev tsim qauv tam sim no. Tus nqi pib qis qis yog qhov tseem ceeb tsuas yog thaum nws tseem ruaj khov tom qab thermal thiab hluav taws xob cycling.
Rau kev tswj ntau lawm, pawg engineering yuav tsum tau txhais cov qauv kev lees paub rau:
- Tiv tauj tiv thaiv hauv mΩ raws li qhov ntsuas tam sim no.
- Tiv tauj kub nce raws li qhov ntsuas tam sim no.
- Hu rau - taub hau qhov ntev kam rau ua mm.
- Brazed sib koom kev pab them nqi thiab detectable void cheeb tsam.
- Mechanical shear zog hauv MPa.
- Nto hardness lossis micro-hardness hauv HV qhov twg siv tau.
Cov khoom lag luam tshwj xeeb yuav tsum tau txheeb xyuas cov qauv ntsuas, ntsuas qhov chaw, siv tam sim no thiab kev lees paub txwv tsis yog tshaj tawm cov lus qhia dav dav xws li "tsis muaj kev tiv thaiv."
Brazing vs. Riveting: 150 MPa-Class Joint Evaluation and Process Control
Brazed Joint vs. Riveted Joint rau siab -Cov neeg tam sim no
Brazing thiab riveting tsim sib txawv mechanical thiab hluav taws xob interfaces. Kev sib cuag riveted nyob ntawm txhua yam deformation thiab tswj kev sib cuag ntawm cov khoom, thaum brazing ua ib qho kev sib koom ua ke los ntawm kev sib tsoo ntawm cov hlau nplaum.
| Parameter | Brazed silver contact los ua ke | Riveted contact los ua ke |
|---|---|---|
| Koom nrog mechanism | Metallurgical bonding los ntawm muab tub lim alloy | Mechanical deformation thiab cuam tshuam |
| Txoj kev tam sim no | Hu rau lub taub hau → braze txheej → tooj liab txhawb | Hu rau lub taub hau → rivet / niam txiv cov khoom siv interface |
| Main txheej txheem variable | Kub, huab cua, muab tub lim, ntub dej | Rivet quab yuam, mob stroke, taub hau geometry, sib dhos |
| Kev tshuaj ntsuam xyuas | X-ray/CT, ultrasonic, metallographic seem | Dimensional soj ntsuam, rub / shear xeem |
| Void tswj | Yuav tsum muaj nyob rau hauv cov txheej txheem lees txais | Tsis ib txwm ntsuas raws li ib tug brazed interface |
| Thermal cycling | Kev sib koom ua ke yuav tsum nyob ruaj khov | Mechanical preload yuav tsum nyob ruaj khov |
| Automation | Rauv, induction lossis siab - zaus brazing | Progressive/in{0}} tuag riveting |
| Hom kev siv tsom xam | Siab -tam sim no breaker thiab kev sib cuag | Relay, contactor thiab switching Cheebtsam |
Cov qauv brazed tuaj yeem muab qhov chaw txuas ntxiv txuas ntxiv hauv qab ntawm lub taub hau sib cuag, tab sis tsuas yog thaum qhov sib koom ua ke tsim tau zoo. Tus neeg muag khoom yuav tsum tswj hwm qhov kev tshem tawm braze, muab tub lim - hlau faib, tus nqi cua sov, qhov kub thiab txias txias.
Rau riveting, thawj qhov sib txawv hloov mus rau rivet shank txoj kab uas hla, upsetting quab yuam, lub taub hau qhov siab, concentricity thiab residual mechanical preload.
Brazing Kub, Wetting thiab Joint Clearance
Cov txheej txheem brazing yuav tsum tau tsim los ntawm qhov muab tub lim tiag tiag -hlau system es tsis yog los ntawm qhov kub ntawm qhov cub.
Cov txheej txheem tseem ceeb variable muaj xws li:
- Filler alloy melting ntau thiab cov kua dej kub.
- Copper-txhawb qhov chaw saum npoo ua ntej brazing.
- Hu rau - lub taub hau thiab kev txhawb nqa.
- Joint clearance thiab capillary flow nrug.
- Cua sov tus nqi thiab qhov siab tshaj plaws.
- Tuav lub sij hawm ntawm brazing kub.
- Kev tiv thaiv huab cua lossis lub tshuab nqus tsev.
- Cooling rate thiab distortion tswj.
Rau qhov tsim nyog tsim nyog, metallographic ntoo khaub lig- ntu yuav tsum tau siv los xyuas kom meej tias cov khoom siv muab tub lim tau ntws los ntawm thaj tsam kev sib koom ua ke yam tsis muaj voiding ntau dhau, tsis ua tiav ntub dej los yog tsis muaj kev tswj xyuas kev sib txuas.
Shear Strength Ntau dua los yog sib npaug rau 150 MPa: Kev Ntsuas Tsim Ntau dua li kev thov kev lag luam
Ib tug shear-lub zog tus nqi xws li siab dua los yog sib npaug rau 150 MPa tsuas yog yuav tsum tau hais thaum nws yog khi rau ib tug txhais cov ntaub ntawv ua ke, sib koom geometry thiab xeem txoj kev. Cov txiaj ntsig ntawm tus lej tuaj yeem hloov pauv tau nrog kev sib cuag - taub hau txoj kab uas hla, braze thickness, sib tshooj cheeb tsam, cov qauv kev npaj thiab kev taw qhia kev thauj khoom.
Rau cov khoom tsim nyog, cov ntaub ntawv xeem yuav tsum txheeb xyuas:
| Cov khoom kuaj | Yuav tsum tau ntaub ntawv |
|---|---|
| Tiv tauj cov ntaub ntawv | AgWC, AgC lossis qib teev tseg |
| Txhawb cov khoom siv | Copper qib thiab temper |
| Kev sib koom ua ke | Ntsuas qhov chaw sib txuas |
| Filler hlau | Qib/batch ID |
| Ntsuas kev taw qhia | Txhais shear-loading direction |
| Qhov siab tshaj plaws load | N |
| Muab xam shear stress | MPa |
| Qhov chaw ua tsis tiav | Interface/filler/niam txiv khoom |
| Kev npaj ua qauv | Ntau thiab ntau tau txhais los ntawm kev pom zoo zoo |
Ib qho kev sib koom ua tsis tiav hauv cov khoom siv niam txiv es tsis yog raws li lub ntsej muag brazed muab cov ntaub ntawv sib txawv ntawm kev ua haujlwm tsis ua haujlwm. QA cov ntaub ntawv yuav tsum yog li sau cov ntaub ntawv qhov chaw tawg, tsis yog qhov siab tshaj plaws xwb.
Download Contact Material Spec Sheet
AgWC/AgC Hu rau Lub Taub Hau ntawm Kev Txhawb Nqa: Ntau dua lossis sib npaug rau 85% IACS Txoj Kev Tam Sim No
Copper Support Geometry thiab hluav taws xob conductivity
Kev them nyiaj yug tooj liab muab lub ntsiab tam sim no - nqa txoj hauv qab ntawm lub taub hau tiv tauj. Qib tooj liab, tus ntoo khaub lig- ntu ntu, txhawb nqa thickness, thiab braze- cheeb tsam geometry tag nrho cov cuam tshuam voltage poob thiab thermal nce.
Qhov twg hluav taws xob conductivity tau teev tseg, qhov kev yuav khoom yuav tsum txheeb xyuas qib tooj liab thiab lub hauv paus kev xeem. Tus nqi xws li Ntau dua lossis sib npaug li 85% IACS yuav tsum tsis txhob hloov pauv ntawm qib tooj liab yam tsis muaj kev txheeb xyuas.
Kev tsim kho tshuab yuav tsum tau tiv thaiv kom tsis txhob muaj thermal ntau dhau ntawm thaj tsam brazed. Kev hloov pauv ntawm ntu ntu, ntu ntu txhawb nqa, thiab kev tswj tsis tau zoo ntawm cov hneev taw braze tuaj yeem tsim qhov kub thiab txias hauv cheeb tsam thaum lub sijhawm ua haujlwm siab - tam sim no.
AgWC/AgC Interface Design: 0.01–0.05 mm Dimensional Control
Lub taub hau tiv tauj thiab kev txhawb nqa tooj liab yuav tsum nyob twj ywm raws li kev sib tw brazing. Nyob ntawm seb qhov loj me thiab cov txheej txheem muaj peev xwm, qhov loj me tuaj yeem tswj tau nyob rau hauv ntau yam xws li ± 0.01 hli txog ± 0.05 hli, tab sis qhov kev kam rau siab tiag tiag yuav tsum tau tsim los ntawm kev tsim cov duab tawg thiab cov khoom sib dhos- nce.
Qhov loj me feem ntau suav nrog:
- Hu rau- taub hau taub.
- Hu rau- lub taub hau tuab.
- Txhawb nqa dav thiab thickness.
- Brazing- cheeb tsam txoj kab uas hla.
- Hu rau- ntsej muag flatness.
- Concentricity ntawm kev sib cuag lub taub hau thiab kev txhawb nqa.
- Ua tiav qhov siab.
Kev tshuaj xyuas qhov ntev yuav tsum tau ua tom qab brazing vim tias thermal distortion tuaj yeem hloov qhov kawg geometry.
Brazing Defects: Voids, Tsis yog -Wetting thiab misalignment
Qhov tseem ceeb tshaj plaws brazing defects feem ntau cuam tshuam nrog kev ua tiav tsis tiav, kev tso pa roj, kev sib kis, thiab tsis muaj cua sov.
|
Tsis zoo |
Qhov laj thawj | Tej yam tshwm sim | Pom zoo tswj |
|---|---|---|---|
| Loj sab hauv void | Gas entrapment los yog tsis zoo filling flow | Txo qhov chaw sib txuas zoo | X-ray/CT tshuaj xyuas |
| Tsis yog- ntub dej | Oxide lossis deg paug | Tsis muaj zog interface | Kev npaj deg thiab tswj kev ntub dej |
| Ntau dhau muab tub lim | Lub ntim ntim tsis raug | Dimensional variation | Preform / dispensing tswj |
| Filler tsis txaus | Kev pab tsis tiav | Localized tam sim no thiab kev ntxhov siab concentration | Filler -Volume Verification |
| Kev tsis ncaj ncees | Fixture txav | Hu rau - txoj haujlwm yuam kev | Precision fixture thiab CMM |
| Thermal distortion | Tshaj tawm cua sov | Flatness / qhov siab sib txawv | Thermal profile tswj |
Cov txheej txheem tswj brazing yuav tsum yog li ntawd yuav tsum tau ua ke nrog kev tshuaj xyuas qhov ntev es tsis yog kho raws li kev ua haujlwm thermal cais.
NDT thiab Shear Testing: ASTM-Raws li QA Cov Ntaub Ntawv thiab Ntau Cov Ntawv Pov Thawj
X-Ray/CT Inspection for Internal Brazing Defects
Kev soj ntsuam pom tsis tuaj yeem ntseeg tau tias cov voids sab hauv hauv qab lub taub hau nyiaj. Rau siab - cov khoom tawg tam sim no, X-ray lossis xam tomography tuaj yeem muab cov pov thawj tsis zoo ntawm kev sib koom ua ke.
Kev soj ntsuam specification yuav tsum txhais:
- Chaw soj ntsuam.
- Yam tsawg kawg detectable defect loj.
- Feem ntau tso cai void feem pua los yog ib tug neeg void loj.
- Qhov chaw txais.
- Sampling zaus.
- Cov cuab yeej daws teeb meem.
- Kev txheeb xyuas ntau.
- Kev tshuaj xyuas hom ntawv.
Kev lees txais yuav tsum tau pom zoo nrog cov khoom kos duab lossis cov phiaj xwm zoo. Ib daim ntawv qhia "zero void" tsis yog technically pab tau tshwj tsis yog tias qhov kev kuaj pom tau kuj txhais tau.
Ultrasonic thiab Metallographic Verification
Kev tshuaj xyuas Ultrasonic tuaj yeem txiav txim siab qhov twg cov khoom siv geometry thiab cov khoom sib xyaw ua ke muab kev sib txuas txaus acoustic thiab teeb liab sib cais.
Rau cov txheej txheem tsim nyog, kev puas tsuaj metallography tseem muaj txiaj ntsig vim nws nthuav tawm ncaj qha:
- Braze- txheej txuas ntxiv.
- Filler faib.
- Cov cheeb tsam cuam tshuam.
- Porosity.
- Kev tawg.
- Kev ntub dej tsis tiav.
- Localized overheating.
NDT thiab metallography ua haujlwm sib txawv. NDT txhawb kev tshuaj xyuas ntau lawm yam tsis muaj kev rhuav tshem cov khoom; metallography muab cov txheej txheem ntxaws- txhim kho pov thawj los ntawm cov qauv xaiv.
Shear Testing thiab Failure -Mode Analysis
Kev ntsuam xyuas shear yuav tsum siv cov kev tswj xyuas rau lub taub hau tiv tauj kom txog thaum lub interface tsis ua hauj lwm los yog niam txiv - cov khoom tsis ua hauj lwm tshwm sim.
Daim ntawv tshaj tawm kev xeem yuav tsum muaj cov qauv qhia, cov khoom siv batch, qhov sib koom ua ke, qhov siab tshaj plaws quab yuam, xam kev ntxhov siab, kev teeb tsa kev thauj khoom thiab qhov chaw tawg.
Piv txwv li:
Shear stress (MPa)=Maximum shear load (N) ÷ Siv tau thaj tsam sib txuas (mm²)
Yog tias qhov chaw sib raug zoo tsis raug ntsuas tsis tu ncua, shear- cov ntaub ntawv muaj zog los ntawm cov khoom sib txawv geometries tsis tuaj yeem muab piv ncaj qha.
Tham nrog peb cov kws tsim hluav taws xob niaj hnub no
IATF 16949 Traceability: Cov Khoom Siv Batch, Brazing Parameters thiab Kev Tshuaj Xyuas Kawg
Cov ntaub ntawv pov thawj AgWC / AgC thiab Batch Records
Rau automotive-txog siab-voltage switching Cheebtsam, cov ntaub ntawv traceability yuav tsum txuas ntxiv los ntawm cov khoom siv raw mus rau cov khoom tiav.
Cov ntaub ntawv tswj tau muaj xws li:
- Hu rau- cov ntaub ntawv qib.
- Silver cov ntsiab lus los yog tshaj tawm muaj pes tsawg leeg.
- Tungsten carbide lossis carbon theem specification.
- Qib tooj liab.
- Filler- qib hlau.
- Raw- khoom muag.
- Batch naj npawb.
- Hnub tsim khoom.
- Kev txheeb xyuas cov khoom siv brazing.
- Brazing kub profile.
- Tus neeg teb xov tooj lossis cov khoom tsim tawm - kev txheeb xyuas kab.
- NDT result.
- Dimensional soj ntsuam tshwm sim.
- Mechanical test result.
ISO 9001 thiab IATF 16949 cov txheej txheem zoo tuaj yeem muab lub hauv paus rau kev tswj xyuas cov txheej txheem thiab kev taug qab, thaum cov txheej txheem lees paub qhov tseeb ntawm cov khoom yuav tsum nyob twj ywm yam khoom - tshwj xeeb.
RoHS thiab REACH Cov Khoom Ua Raws Cai
Kev ua raws li cov khoom siv yuav tsum tau sau tseg los ntawm cov lus tshaj tawm tswj thiab, yog tias xav tau, kev sim kuaj.
Rau kev yuav khoom, pob khoom muag yuav tsum paub qhov txawv ntawm:
- Kev tshaj tawm cov khoom siv.
- Cov ntaub ntawv ua raws li RoHS.
- REACH cov khoom- kev tshaj tawm txog xwm txheej.
- Daim ntawv pov thawj khoom xa tuaj.
- Ntau lawm -batch traceability.
- Cov ntaub ntawv soj ntsuam zaum kawg.
Qhov kev sib cais no txwv tsis pub cov ntaub ntawv ua raws cai los ntawm kev kho tsis raug raws li cov ntaub ntawv pov thawj ntawm kev siv tshuab lossis hluav taws xob.
Txheej Txheem Muaj Peev Xwm: ± 0.01 hli txog ± 0.05 hli Qhov Loj Loj
Dimensional peev xwm yuav tsum tau soj ntsuam raws li qhov tseeb engineering kos duab. Rau kev sib txuas lus precision, kev ntsuas yuav suav nrog micrometers, optical systems, CMM cov cuab yeej, lossis cov ntsuas siab.
Qhov twg daim duab qhia txog ± 0.01 hli, tus neeg muag khoom yuav tsum ua kom pom cov txheej txheem muaj peev xwm siv cov txheej txheem ntsuas ntsuas thiab cov qauv ntsuas es tsis yog cia siab rau ib qho kev tshuaj ntsuam xyuas.
Rau siab dua - ntim ntau lawm, kev tswj xyuas cov txheej txheem tuaj yeem siv rau qhov ntev xws li kev sib cuag- lub taub hau qhov siab, kev txhawb nqa thickness, brazed los ua ke qhov siab, thiab concentricity.
FAQ: Brazed Silver Contact Assembly Engineering thiab kev yuav khoom
Dab tsi txiav txim siab qhov yuav tsum tau muaj kev sib koom ua ke ntawm lub zog rau kev sib txuas ntawm cov nyiaj hluav taws xob?
Tus nqi yuav tsum yog nyob ntawm kev sib cuag geometry, sib dhos load, thermal cycling, thiab daim ntawv thov lub luag haujlwm. Shear lub zog yuav tsum tau teev nyob rau hauv MPa ua ke nrog rau qhov ntsuas geometry, qhov chaw sib txuas, kev taw qhia kev thauj khoom, thiab hom tsis ua haujlwm.
Yuav ua li cas yog lub internal brazing zoo ntawm ib tug silver contact los ua ke txheeb xyuas?
X-ray lossis CT tshuaj ntsuam xyuas tuaj yeem txheeb xyuas cov voids sab hauv thiab kev sib txuas tsis tiav yam tsis muaj kev rhuav tshem cov khoom. Cov qauv xaiv tuaj yeem dhau mus rau metallographic sectioning thiab shear testing rau cov txheej txheem tsim nyog.
Dab tsi traceability yuav tsum tus neeg muag khoom muab rau AgWC lossis AgC brazed hu?
Tus neeg muag khoom yuav tsum txuas kev sib cuag -cov khoom siv thiab tooj liab- txhawb nqa cov khoom ntim rau cov ntaub ntawv khaws cia- cov ntaub ntawv hlau, qhov tsis sib xws, NDT cov txiaj ntsig, kev tshuaj xyuas qhov ntev, thiab kev txheeb xyuas qhov kawg. ISO 9001 lossis IATF 16949 cov tshuab tuaj yeem txhawb nqa cov qauv kev taug qab no.
tiv tauj peb
Rau tam sim no Circuit Court-breaker cov kev pab cuam, xa cov duab kos, AgWC/AgC cov khoom yuav tsum tau, thiab brazing soj ntsuam cov qauv tam sim no rau kojBrazed Silver Contact Assembly, yog li pab neeg tsim khoom tuaj yeem tshuaj xyuas kev sib koom ua ke, kev siv cuab yeej, NDT, thiab kev tsim khoom ua ntej koj qhov kev yuav khoom tom ntej.
