Dab tsi yog qhov txawv ntawm Ob txheej txheem ntawm Tin Spraying thiab Immersion Tin rau Circuit Board?

Muaj ob txoj hauv kev rau PCB pawg thawj coj saib: tshuaj tsuag tin thiab immersion tin, ob qho tib si ntawm cov txheej txheem kho saum npoo kom tau raws li cov cai ntawm cov hlau lead-dawb soldering. Txawm li cas los xij, hauv cov txheej txheem Circuit Court board, immersion tin tsis paub rau cov neeg feem coob. Cia peb tham txog qhov sib txawv ntawm cov tshuaj tsuag tin thiab immersion tin kom ntxaws nrog cov kws tshaj lij ntawm ntau txheej Circuit Court boards.

Qhov sib txawv ntawm cov tshuaj tsuag tin thiab immersion tin

1. txheej txheem ntws

Tin spraying: pretreatment - tin spraying - kuaj - sib sau - saib xyuas.

Immersion Tin: Test - Tshuaj Kho Mob - Immersion Tin - Forming - Visual Inspection.

2. Txheej txheem txheej txheem

Tin spraying: Lub hom phiaj tseem ceeb yog mus ncaj qha rau hauv PCB board rau hauv cov molten tin paste. Tom qab tau leveled los ntawm huab cua kub, ib tug tuab tin txheej yuav tsim nyob rau ntawm tooj liab nto ntawm PCB.

Immersion tin: Nws tsuas yog siv cov tshuaj tiv thaiv kev hloov pauv los ua ib txheej nyias nyias ntawm PCB nto.

3. Lub cev muaj zog

Txau tin: lub thickness ntawm cov tin txheej yog li ntawm 1um-40um, cov qauv saum npoo kuj yog ntom, hardness siab, thiab nws tsis yooj yim rau khawb; cov tshuaj tsuag tin tsuas muaj cov tin ntshiab hauv cov txheej txheem tsim khoom, yog li qhov chaw yooj yim los ntxuav thiab tuaj yeem khaws cia hauv qhov kub thiab txias rau ib lub sijhawm. xyoo, thiab qhov teeb meem ntawm qhov chaw discoloration tsis yooj yim tshwm sim thaum lub sij hawm vuam txheej txheem.

Immersion tin: Lub thickness ntawm tin yog li ntawm 0.8um-1.2um, cov qauv saum npoo yog xoob, lub hardness me me, thiab nws yog ib qho yooj yim ua rau nto khawb; Immersion tin undergoes complex tshuaj tiv thaiv, thiab muaj ntau tus neeg sawv cev, yog li nws tsis yog ib qho yooj yim mus ntxuav thiab nto yog ib qho yooj yim Cov residual potion yog nquag muaj teeb meem discoloration thaum vuam, thiab lub sij hawm cia yog luv. Nws tuaj yeem khaws cia rau peb lub hlis ntawm qhov kub thiab txias. Yog hais tias lub sij hawm ntev, discoloration yuav tshwm sim.

4. Cov yam ntxwv tshwm sim

Txau tin: qhov saum npoo yog ci dua thiab zoo nkauj dua.

Immersion tin: Qhov saum npoo yog lub teeb dawb, npub thiab yooj yim hloov xim.