PCB ntau lawm FAQ

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PCB ntau lawm FAQ

Ua ntej, degreasing (kub 60-65 degree C)

1. Muaj ntau cov foams: Qhov zoo ntawm cov npuas dej yog qhov txawv txav: nws yuav ua rau cov nyhuv degreasing tsis zoo. Yog vim li cas: mismatched tank tov.

2, muaj cov khoom muaj pes tsawg leeg: muaj cov khoom sib xyaw ua ke vim li cas: lub lim dej tsis zoo lossis cov dej siab siab ntawm lub tshuab sib tsoo tsis txaus, sab nraud coj cov plua plav.

3, cov ntiv tes luam tawm tsis tuaj yeem tshem tawm cov roj: cov ntiv tes luam tawm tsis tuaj yeem tshem tawm cov roj vim li cas: cov roj kub qis, cov kua dej tsis sib haum.

Thib ob, micro-etching (NPS 80-120G / L H2SO4 5}% kub 25-35 degree C)

1. Cov tooj liab ntawm lub rooj tsavxwm yog dawb me ntsis: yog vim li cas cov phaj sib tsoo, degreasing los yog muaj kuab paug, cov concentration ntawm cov kua dej yog tsawg.

2, qhov saum npoo ntawm lub phaj tooj liab yog xim dub: tom qab degreasing, cov dej tsis huv los ntawm cov roj tshem tawm. Cov xim liab ntawm cov tooj liab yog ib txwm muaj txiaj ntsig ntawm micro-etching.

Thib peb, kev ua kom muaj zog (cov xim ntawm da dej yog xim dub, qhov kub tsis tuaj yeem tshaj 38 ° C, ua tsis taus pa)

1. Dej nag thiab kev qhia meej ntawm da dej:

Yog vim li cas rau nag lossis daus ntawm da dej:

(1) Lub concentration ntawm dej palladium yog ntxiv tam sim ntawd thiab cov ntsiab lus yog tsawg (ib txwm ua ntej dip tov yog siv rau cov kua theem)

(2) Sn 2+ concentration tsawg, cov ntsiab lus Cl- tsawg, thiab kub siab heev.

(3) Kev taw qhia ntau dhau ntawm huab cua ua rau oxidation ntawm palladium.

(4) Nws kis tau los ntawm Fe +.

2. Ib txheej ntawm silvery dawb zaj duab xis tshwm nyob rau saum npoo ntawm potion:

Ib tug silvery dawb zaj duab xis tshwm nyob rau saum npoo ntawm syrup. Ua rau: Cov oxide tsim los ntawm oxidation ntawm Pd.

Plaub, ceev (lub sijhawm ua haujlwm 1-2 feeb kub 60-65 degree C)

1. Tsis muaj tooj liab hauv lub qhov: Ua rau: Lub sijhawm ua haujlwm nrawm nrawm dhau, thiab Pd tseem raug tshem tawm thaum tshem tawm Sn.

2, kub siab Pd yog ib qho yooj yim mus poob.

5. Tshuaj lom neeg lub tog raj kheej ua kua yog paug

Ua rau muaj kev sib kis ntawm cov tshuaj tov: 1. Kev ntxuav dej tsis txaus ua ntej PTH 2, Pd dej yog coj los rau hauv lub tog raj kheej tooj liab 3. Muaj lub phaj ntog tawm ntawm lub tank 4, tsis muaj lub tank ntev ntev 5, tsis txaus pom

Ntxuav: So rau 10 teev nrog 10% H2SO4, neutralize nrog 10% NaOH, thiab thaum kawg yaug nrog dej.

Thib rau, lub qhov phab ntsa tsis tuaj yeem ua rau tooj liab

Yog vim li cas: 1. Kev tshem tawm cov roj tsis zoo 2. Kev tshem tawm slag tsis txaus 3. Kev tshem tawm ntau dhau slag

7. Tom qab thermal poob siab, lub qhov tooj liab yog sib cais los ntawm lub qhov phab ntsa.

Yog vim li cas: 1. Ntxiv rau cov slag tsis zoo, cov dej tsis zoo ntawm cov substrate

Yim, lub rooj tsavxwm muaj ib txoj hlua dej

Yog vim li cas: 1. Kev tsim ntawm lub hanger tsis tsim nyog. 2. Kev sib xyaw ntawm lub tog raj kheej tooj liab yog ntau dhau. 3. Kev ntxuav tsis txaus tom qab kev nrawm.

Cuaj, qhov kub ntawm cov tshuaj tooj liab tov

Yog tias qhov kub thiab txias siab dhau lawm, cov kua tshuaj tooj liab yuav tawg sai sai, thiab cov tshuaj muaj pes tsawg leeg yuav hloov mus rau qhov zoo ntawm electroless tooj liab plating. Cov kub kub kuj tsim cov hmoov tooj liab ntau ntau, ua rau tooj liab rau ntawm lub rooj tsavxwm thiab qhov. Feem ntau tswj ntawm ib ncig ntawm 25-35 degree .