Kovar hlauyog ib qho hlau hlau tshwj xeeb uas tsis tshua muaj kev nthuav dav, paub dav rau nws cov khoom sib phim thermal tshwj xeeb.

Nws ua lub luag haujlwm tseem ceeb hauv kev lag luam siab xws li khoom siv hluav taws xob, aerospace, thiab cov khoom siv kho mob. Phau ntawv qhia no teb cov lus nug tseem ceeb ntawm Kovar hlau yog dab tsi thiab piav qhia txog nws cov kev siv tseem ceeb, nrog rau peb cov kev daws teeb meem zoo Kovar hlau.

1. Kovar Hlau Yog Dab Tsi?

1.1 Lub Ntsiab Lus Txhais

Kovar hlau yog hlau hlau-nickel-cobalt alloy uas yaj hauv lub tshuab nqus tsev, tsim los rau kev tswj kev nthuav dav thermal kom meej.

Nws qhov zoo tshaj plaws yog phim cov coefficient thermal expansion ntawm borosilicate iav thiab ceramics, ua rau seamless hermetic sealing.

1.2 Cov Tshuaj Txheej Txheem

Kovar hlau muaj cov khoom sib xyaw ua ke kom ntseeg tau tias muaj kev ua haujlwm ruaj khov:

- Hlau (Fe): 53-54% (sib npaug)

- Nickel (Ni): 28.5-29.5%

- Cobalt (Co): 16.8-17.8%

Cov ntsiab lus tsis muaj teeb meem (Mn, Si, C) raug txwv tsis pub tshaj 0.5% ntawm txhua qhov.

1.3 Cov Qauv Tseem Ceeb & Cov Npe

Nws ua raws li cov qauv thoob ntiaj teb kom ntseeg tau tias muaj kev sib xws thoob plaws hauv daim ntawv thov.

- ASTM F15 (tus qauv tseem ceeb rau cov khoom siv hlau Kovar)

- UNS K94610, Werkstoff Nr. 1.3981 (cov khoom siv thoob ntiaj teb)

Kuj hu ua 4J29 hauv cov qauv Suav, nws hloov pauv tau nrog Nilo-K hauv qee thaj tsam.

2. Cov Yam Ntxwv Tseem Ceeb ntawm Kovar Hlau

2.1 Kev Nthuav Dav Thermal Qis & Ruaj Khoov

Nws cov coefficient thermal expansion (4.6-5.2 × 10⁻⁶/℃, 20-400℃) phim cov iav borosilicate zoo kawg nkaus.

Qhov no tshem tawm cov kab nrib pleb thaum lub sijhawm ua kom sov thiab txias, ua kom ntseeg tau tias kev sib khi ruaj khov.

2.2 Kev Ua Haujlwm Zoo heev

Nws muaj qhov ductility zoo thiab tuaj yeem kos rau hauv cov xov hlau zoo, khoov, thiab vuam tau yooj yim.

Haum rau kev kos duab txias, stamping, thiab ntau yam kev vuam (argon arc, laser vuam).

2.3 Kub thiab ruaj khov

Nws tswj tau qhov ruaj khov ntawm qhov kub txog li 450 ℃, nrog rau qhov chaw yaj ntawm 1450 ℃.

Tsim cov foob airtight nrog iav / ceramics, qhov tseem ceeb rau lub tshuab nqus tsev thiab cov ntawv thov kev ntseeg siab.

3. Kovar Hlau vs. Cov Hlau Alloy Zoo Sib Xws: Rooj Sib Piv

Cov lus hauv qab no qhia txog Kovar hlau qhov zoo tshwj xeeb tshaj li constantan thiab cupro nickel hlau:

4. Kovar Wire siv li cas? Cov xwm txheej tseem ceeb ntawm kev siv

4.1 Cov Khoom Siv Hluav Taws Xob & Semiconductor Ntim Khoom

Siv ua cov xov hlau txhuas rau cov raj nqus tsev, transistors, diodes, thiab cov circuits sib xyaw.

Ua kom muaj kev sib khi zoo nrog cov iav insulators, tiv thaiv cov khoom sab hauv los ntawm cov dej noo thiab kev ua qias tuaj.

4.2 Kev Siv Dav Hlau thiab Kev Ua Dav Hlau

Siv rau hauv cov khoom siv hluav taws xob dav hlau thiab cov khoom siv sib txuas lus satellite.

Nws qhov kev ruaj khov thermal tiv taus qhov kub thiab txias hloov pauv ntau heev hauv cov chaw aerospace.

4.3 Cov Khoom Siv Kho Mob

Siv rau hauv cov khoom siv kho mob, cov khoom siv kuaj mob, thiab cov khoom sib txuas hermetic.

Ua tau raws li qhov yuav tsum tau ua kom muaj kev sib haum xeeb thiab kev ntseeg tau ntawm cov khoom siv kho mob.

4.4 Cov Khoom Siv Kho Qhov Muag thiab Lub Tshuab Nqus Tsev

Siv rau hauv cov iav-rau-hlau foob rau cov fibers optical, microwave raj, thiab cov khoom siv X-ray.

Xyuas kom meej tias airtightness thiab thermal matching rau high-precision optical systems.

5. Peb Cov Khoom Siv Kovar Hlau: Cov Kev Daws Teeb Meem Txhim Khu Kev Rau Koj Cov Kev Xav Tau

5.1 Cov Lus Qhia Tag Nrho

Npog qib txheem (4J29/Kovar) nrog cov xov hlau txoj kab uas hla ntawm 0.10 hli txog 5.0 hli.

Muaj nyob rau hauv spools, coils, lossis txiav ntev, ua raws li ASTM F15 cov qauv.

5.2 Cov Kev Pabcuam Tshwj Xeeb

Muab cov hlau txoj kab uas hla thiab kev kho qhov chaw (plating, oxidation) rau cov kev xav tau tshwj xeeb.

Tsim cov kev daws teeb meem rau cov ntawv thov me me lossis cov xaj loj hauv kev lag luam.

5.3 Kev Tswj Xyuas Zoo Nruj

Kev kuaj ua ntej xa khoom 100%, suav nrog cov coefficient ntawm kev nthuav dav thermal, cov khoom sib xyaw, thiab kev kuaj xyuas kev kam rau txoj kab uas hla.

Kev tsim khoom siv lub tshuab nqus tsev ua kom muaj kev ua haujlwm zoo ib yam thiab muaj kev ntshiab siab.

6. Xaus Lus

Kovar hlau yog ib qho hlau alloy uas tsis muaj qhov hloov pauv tau, txhais los ntawm nws qhov kev sib phim thermal thiab hermetic sealing peev xwm.

Nws siv dav hauv cov khoom siv hluav taws xob, aerospace, thiab kev kho mob ua pov thawj nws cov txiaj ntsig thiab kev ntseeg tau.

Peb cov hlau Kovar zoocov khoom siv tag nrho cov txiaj ntsig no. Yog tias koj xav tau kev sib khi zoo lossis cov hlau alloy uas nthuav dav tsawg, tiv tauj peb kom tau txais cov lus qhia thiab kev txhawb nqa kev txawj ntse.