Kev piav qhia ntxaws txog LDS txheej txheem

1. Kev xaiv cov khoom siv raw
PA6 / 6T (semi aromatic polyamide)
· Muaj zog stability ntawm thermal deformation, haum rau reflow soldering (tseem haum rau cov hlau lead-free soldering)
· Zoo mechanical zog
Thermoplastic polyester (PBT, PET thiab lawv cov khoom sib xyaw)
· Kev ua haujlwm zoo txhua yam thiab hluav taws xob
· Lawv cov khoom sib tov muaj qhov zoo thermal deformation stability
Crosslinked PBT
· Kev tiv thaiv hluav taws dawb
· Irradiation crosslinking ua rau nws muaj qhov kub thiab txias (tsim rau txhua qhov txheej txheem vuam)
LCP (liquid crystal polymer)
· Zoo liquidity
· Zoo dimension stability nyob rau hauv kub nias
PC / ABS (polycarbonate / acrylonitrile / butadiene / styrene)
· Cov yam ntxwv zoo ntawm qhov chaw
· Zoo mechanical zog
2. Txhaj tshuaj molding
Qhov pom qhov yuav tsum tau ua los ntawm laser circuit forming yog tsim los ntawm ib qho kev txhaj tshuaj molding txoj kev. Cov qhuav thiab preheated yas hais yog txhaj rau hauv pwm nyob rau hauv siab. Tom qab txias, qhov nyuaj no dhau los ua ib qho qauv ntawm cov pwm. Cov kauj ruam tom ntej ntawm qhov kev txhaj tshuaj molding MID tivthaiv yog siv LPKF MicroLine3D laser tshuab rau kev ua haujlwm hauv Circuit Court.
3. Laser ua kom
Thermoplastics uas tuaj yeem qhib tau los ntawm laser muaj ib qho tshwj xeeb organometallic complex form additive, uas tuaj yeem qhib tau los ntawm lub cev thiab tshuaj tiv thaiv nyob rau hauv irradiation ntawm tsom laser beam. Nyob rau hauv lub tawg ua tiav nyob rau hauv cov yas tov nrog impurities, lub complex yog qhib thiab hlau atoms raug tso tawm los ntawm cov organic ligand. Cov hlau hais no ua raws li nucleons rau txo cov tooj liab.
Ntxiv nrog rau kev ua kom, lub laser kuj coarsens saum npoo. Lub laser tsuas yog melts lub polymer matrix, tsis yog muab tub lim. Nyob rau hauv txoj kev no, me me pits thiab notches yog tsim los ua tooj liab ruaj khov rau nws thaum lub sij hawm metallization. (Saib daim duab)
4. Metallization
Thawj kauj ruam ntawm metallization ib feem ntawm LPKF-LDS txheej txheem yog ntxuav kom tshem tawm cov khib nyiab ntawm laser ua, thiab tom qab ntawd mus rau hauv cov organic tooj liab plating los ua ib qho hluav taws xob hluav taws xob.
Ib qho txiaj ntsig ntawm cov txheej txheem no yog tias nws tsis xav tau cov txheej txheem pib ua haujlwm hauv cov txheej txheem tooj liab plating. Nws tus nqi sedimentation yog 3 - 5 microns/teev. Yog tias yuav tsum muaj txheej txheej tooj liab ntau dua, cov txheej txheem electroplating tooj liab plating tuaj yeem ua raws. Nickel, kub, tin, tin / txhuas, nyiaj, nyiaj / palladium, thiab lwm yam kuj tuaj yeem raug plated kom tau raws li kev thov tshwj xeeb.
5. Kev sib dhos
Ntau cov yas uas tuaj yeem qhib tau los ntawm laser muaj qhov thermal deformation ruaj khov, xws li PA6/6T, LCP thiab cross-linked PBT, uas tuaj yeem rov ua dua welded, yog li tag nrho nrog cov txheej txheem SMT.
Koj tuaj yeem siv stencil printing rau solder txheej. Txawm li cas los xij, qhov no tsuas yog ua tau yog tias qhov chaw nyob ntawm tib lub dav hlau. Yog tias txheej txheej yuav tsum tau nqa tawm ntawm qhov siab sib txawv lossis hauv kab noj hniav, cov txheej txheem tin txhaj tshuaj yog qhov zoo tagnrho.
Tib yam muaj tseeb rau SMD Cheebtsam. Yog hais tias tag nrho cov khoom nyob rau tib lub dav hlau, cov txheej txheem kev tso kawm tsis siv neeg tuaj yeem siv los ua kom tiav qhov kev tso kawm tsis siv neeg. Yog tias cov khoom nqa khoom muaj Z-axis hloov ua haujlwm, qhov saum npoo tuaj yeem tuaj yeem txiav. Tsis siv neeg mounting rau ntawm qhov chaw inclined thiab qhov chaw tsis sib xws yog qhov nyuaj heev thiab feem ntau yuav tsum tau siv phau ntawv mounting.
Tsis tas li ntawd, SMD Cheebtsam ntawm MID Cheebtsam uas tsim los ntawm LPKF-LDS txoj kev kuj tuaj yeem sib sau los ntawm kev sib cuag nti xws li Bonding. Feem ntau, tuab txhuas hlau los yog tuab / nyias kub hlau (xws li txoj kab uas hla 25um) yog siv rau kev sib txuas ua ke.