NeoDen Stencil tshuab luam ntawv YS350
SMT steel mesh yog siv rau cov kua thiab lub xeev ntawm solder paste luam ntawv ntawm lub PCB board, Circuit Court board ntxiv rau lub hwj chim board nrov tshaj plaws tam sim no siv SMT tshuab, muaj ntau lub rooj paste bonding ncoo ntawm PCB, uas yog tsis muaj qhov welding. txoj kev, thiab cov hlau mesh qhov sib raug rau cov ntaub ntawv sib txuas ntawm PCB, phau ntawv txhuam cov qib ntawm cov tin hauv cov txhuam tawv tawv yuav yog ib nrab ntawm cov kua thiab cov khoom siv Cov tin muab tshuaj txhuam hauv lub cev lub cev yog txhuam mus rau PCB board los ntawm lub qhov hauv steel net, thiab tom qab ntawd cov khoom yog muab tso rauSMT tshuab, thiab ces cov khoom yog tsim los ntawmreflow qhov cub.
I. Qhib txoj cai ntawm SMT steel mesh
1. CHIP yam khoom peb zaug raws li tag nrho cheeb tsam ntawm 10 ~ 15 [%], ua kom zoo li qub, thiab tom qab ntawd hloov kho raws li qhov yuav tsum tau ua ntawm cov hlau lead.
2. IC hom Cheebtsam (nrog rau kab ntxig) ntev mus rau qhov ntxiv 0.1-0.20mm, qhov dav ntawm cov hlau lead yuav tsum hloov kho, tuaj yeem tsim nyog dav
3. kuj thiab muaj peev xwm hom Cheebtsam, qhov ntev ntawm qhov ntxiv 0.1mm.Qhov dav tuaj yeem hloov kho raws li qhov xav tau ntawm cov hlau lead
Lwm cov khoom tseem nyob ib yam li cov kev cai saum toj no.
II.Txais SMT steel mesh
1. steel mesh nro 35≤F≤50 (N/cm) nro yuam kev: F tsawg dua los yog sib npaug rau 8 (N/cm).
2. steel mesh tsos: net nto tsis muaj khawb, tsis muaj pob.
3. Ua ntej tsim cov hlau mesh tshiab, txhim kho cov hlau mesh ntawm lub tshuab luam ntawv kom zoo, thiab sim luam 2 ~ 5 daim hlau kom paub meej tias cov ntawv luam tawm.
4. Tom qab kev sim ntau lawm dhau lawm, sau lub sijhawm tsim khoom hauv cov ntaub ntawv tseem ceeb ntawm kev tswj cov phiaj xwm steel.
III.Yuav tsum tau luam tawm hom SMT steel mesh
1. Thaum ib lub rooj tsavxwm thiab ib lub net, txoj hauj lwm ntawm cov duab qhib yuav tsum nyob nruab nrab.
2. Thaum ob lub PCB sib txawv tau qhib rau tib lub laj kab hlau, nws yuav tsum tau muab cov npoo ntawm ob lub rooj sib cais los ntawm 30mm.
3. Thaum ob lub PCB tib yam qhib rau ntawm lub vas hlau, lub sijhawm nruab nrab ntawm ob daim hlau ntawm 180 ° sib dhos yuav tsum yog 30 hli.
Post lub sij hawm: Jun-10-2021