Teeb meem thiab kev txhim kho txoj hauv kev ua haujlwm yoj soldering2

Shenzhen Shenchuang Hi-tech Electronics Co., Ltd. Peb cov khoom tseem ceeb muaj xws li cov chargers mus ncig, tsheb chargers, USB cables, fais fab nyiaj hauv tuam txhab nyiaj thiab lwm yam khoom siv digital.Tag nrho cov khoom muaj kev nyab xeeb thiab txhim khu kev qha, nrog cov cim styles.products dhau daim ntawv pov thawj zoo li CE, FCC, ROHS, UL, PSE, C-Tick, thiab lwm yam. , Yog tias koj txaus siab rau, koj tuaj yeem tiv tauj ceo@schitec.com ncaj qha.

Nyob ruaj ntseg nrog SChitec

Teeb meem thiab kev txhim kho txoj hauv kev ua haujlwm yoj soldering2

10. Green residue GREEN RESIDUE:

Ntsuab yog feem ntau tshwm sim los ntawm corrosion, tshwj xeeb tshaj yog cov khoom siv hluav taws xob, tab sis tsis yog tag nrho, vim hais tias nws yog ib qho nyuaj rau qhia seb nws yog xim ntsuab xeb lossis lwm yam khoom siv tshuaj, tab sis feem ntau, cov tshuaj ntsuab yuav tsum raug kuaj pom raws li kev ceeb toom, thiab qhov ua rau yuav tsum raug txheeb xyuas tam sim ntawd. , tshwj xeeb no. Cov teeb meem ntsuab yuav loj dua thiab loj dua, yog li ua tib zoo mloog nws, feem ntau nws tuaj yeem txhim kho los ntawm kev tu.

10-1. Corrosion teeb meem feem ntau tshwm sim ntawm tooj liab liab los yog tooj liab-muaj alloys. Tsis yog-rosin fluxes yog siv. Cov tshuaj corrosive muaj tooj liab ions thiab yog li ntsuab. Thaum pom cov xim ntsuab no, nws tuaj yeem ua pov thawj tias Tsis tau ntxuav kom zoo tom qab siv cov dej tsis muaj rosin.

10-2.COPPER ABIETATES yog ib qho kev sib xyaw ntawm tooj liab oxide thiab ABIETIC ACID (cov khoom tseem ceeb ntawm rosin). Cov khoom no yog ntsuab tab sis tsis corrosive thiab muaj kev rwb thaiv tsev siab. Nws tsis cuam tshuam rau qhov zoo tab sis tus neeg siv khoom yuav tsis pom zoo los ntxuav nws.

10-3. Cov residue lossis substrate ntawm PRESURFATE yog ua los ntawm cov seem zoo sib xws. Tom qab solder, ntsuab residue yuav raug tsim. Cov chaw tsim khoom siv substrate yuav tsum tau ua kom huv lub substrate tom qab ntxuav kom huv si ntawm substrate.

11. Dawb corrosion

Qhov thib yim yog tias cov khoom seem dawb yog hais txog cov seem dawb ntawm cov khoom siv hauv substrate, thiab cov khoom no yog hais txog kev xeb dawb ntawm cov ko taw thiab cov hlau, tshwj xeeb tshaj yog rau cov hlau uas muaj cov hlau lead ntau dua. Feem ntau vim tias cov tshuaj chloride ions yooj yim tsim cov tshuaj chloride nrog cov hlau lead thiab tom qab ntawd tsim cov hlau lead carbonate (dawb corrosives) nrog carbon dioxide.

Thaum siv rosin-raws li flux, rosin yog insoluble nyob rau hauv dej thiab yuav muaj chlorine-muaj active neeg sawv cev yam tsis muaj corrosive. Txawm li cas los xij, yog tias siv cov kuab tshuaj tsis raug, tsuas yog rosin tuaj yeem raug tshem tawm kom tshem tawm cov tshuaj chlorine ions, uas yuav ua rau kom corrosion.

12. Pinholes thiab Pores PINHOLDS THIAB BLOWHOLES:

Qhov sib txawv ntawm lub pinhole thiab lub qhov cua. Lub pinhole yog ib lub qhov me me pom nyob rau hauv qhov sib koom ua ke. Lub qhov cua yog qhov loj dua ntawm qhov sib koom ua ke kom pom sab hauv. Sab hauv ntawm lub pinhole feem ntau yog khoob, thiab lub qhov cua yog ejected los ntawm cov huab cua sab hauv. Lub qhov loj yog tshwm sim los ntawm qhov tseeb tias lub solder yog solidified thaum cov roj tsis tau raug tshem tawm tag, thiab qhov teeb meem no yog tsim.

12-1. Organic contaminants: Lub substrate thiab qhov chaw ntawm qhov chaw yuav tsim roj thiab ua rau pinholes los yog pores. Lub hauv paus ntawm cov pa phem tuaj yeem yog los ntawm lub tshuab cog tsis siv neeg lossis qhov chaw cia khoom tsis zoo. Qhov teeb meem no yooj yim dua, tab sis nws tuaj yeem ntxuav nrog cov kuab tshuaj, tab sis yog tias pom tias muaj cov kab mob sib kis los ntawm SILICONOIL vim nws tsis yooj yim ntxuav los ntawm cov kuab tshuaj, lwm yam kev xaiv yuav tsum tau xav txog hauv cov txheej txheem.

12-2. Lub substrate muaj cov dej noo: yog tias cov khoom siv hauv qab yog pheej yig dua, los yog siv txoj kev ntxhib ntxhib, cov dej noo tau yooj yim absorbed ntawm lub qhov, thiab cov cua kub yog evaporated thaum lub sij hawm soldering. Kev daws yog muab tso rau. Ci hauv qhov cub ntawm 120 ° C rau ob teev.

12-3. Brightener nyob rau hauv cov tshuaj electroplating: Thaum electroplating nrog ib tug loj npaum li cas ntawm brightener, lub brightener feem ntau tso ib txhij nrog kub, thiab yog volatilized thaum raug kub. Tshwj xeeb tshaj yog thaum kub plating, cov tshuaj electroplating uas muaj tsawg brightener yog siv xwb. Tau kawg, qhov no yuav tsum tau xa rov qab mus rau tus neeg muag khoom.

13. KHOOM PLIG:

Oxidation tiv thaiv cov roj los ntawm cua tshuab mus rau hauv lub tin da dej thiab ejected los ntawm lub dav hlau mus rau paug substrate. Qhov teeb meem no yuav tsum yog tshwm sim los ntawm qhov chaw da dej ntawm qhov chaw qis dhau lawm thiab cov solder hauv lub tin da dej tuaj yeem txhim kho.

14. Cov pob qij txha yog tsaus:

Qhov tshwm sim no tau muab faib ua ob hom (1) tom qab lub sijhawm soldering, (kwv yees li ib nrab xyoo mus rau ib xyoos) cov xim ntawm cov pob qij txha tig tsaus.

(2) Cov pob qij txha tiav ua tiav yog grey.

14-1. Impurities nyob rau hauv solder: Cov ntsiab lus hlau nyob rau hauv lub solder yuav tsum tau xyuas tsis tu ncua txhua peb lub hlis.

14-2. Flux tseem yuav tsim qee qhov xim tsaus nti ntawm qhov chaw kub. Yog hais tias RA thiab cov organic acid flux nyob twj ywm rau ntawm qhov sib koom ua ke ntev dhau lawm, nws yuav ua rau me ntsis corrosion thiab greyish, tam sim ntawd tom qab soldering. Kev ntxuav yuav tsum tau txhim kho.

Qee cov inorganic acid fluxes ua rau ZINC OXYCHLORIDE ntxuav nrog 1% hydrochloric acid thiab tom qab ntawd ntxuav.

14-3. Hauv cov hlau nplaum, cov pob qij txha uas muaj cov ntsiab lus qis (xws li 40/60 solder) kuj tsaus.

Wave soldering titanium claw

15. Solder sib koom nto roughness:

Qhov saum npoo ntawm cov pob qij txha muaj cov xuab zeb zoo li protruding nto, thiab tag nrho cov duab ntawm cov pob qij txha tsis hloov.

15-1. Crystallization ntawm hlau impurities: Hlau Cheebtsam nyob rau hauv solder yuav tsum tau soj ntsuam tsis tu ncua txhua peb lub hlis

15-2. Tin slag: Cov tin slag raug thawb rau hauv lub tin da dej los ntawm PUMP thiab txau los ntawm lub dav hlau. Vim hais tias cov tin slag muaj nyob rau hauv lub tin, qhov saum npoo ntawm cov pob qij txha muaj cov xuab zeb zoo li protrusion. Lub tin da dej saum npoo yuav tsum tsawg dhau, thiab cov da dej solder yuav tsum tsawg dhau. Ntxiv cov soldering yuav tsum tau txhim kho los ntawm kev ntxuav lub tin da dej thiab PUMP.

15-3. Cov khoom txawv teb chaws: xws li cov npoo nyoos, cov ntaub ntawv insulating, thiab lwm yam. muab zais rau hauv qhov chaw ntawm ko taw, kuj tseem yuav tsim cov khoom ntxhib

16. Yellow solder pob qij txha:

Vim tias qhov kub thiab txias yog siab dhau lawm, tam sim ntawd xyuas cov tin kub thiab qhov ntsuas kub tsis raug.

17. Short circuit BRIDGING:

Cov pob qij txha ntau dhau ua rau ob lub pob qij txha sib ntsib.

17-1. Lub substrate tsis txaus rau tin, lub preheating yog tsis txaus, #123; tag nrho lub cub tawg tuaj yeem ua tau.

17-2. Tsis zoo flux: tsis zoo flux, deterioration, thiab lwm yam.

17-3. Cov kev taw qhia ntawm lub substrate yog tsis zoo txuam nrog tin yoj, thiab cov tin kev taw qhia yog hloov.

{0}}. Kev tsim hluav taws xob tsis zoo: ze ze ntawm cov kab lossis kev sib cuag (yuav tsum muaj qhov sib nrug ntawm 0.6mm lossis ntau dua); Yog hais tias nws yog ib qho array ntawm cov pob qij txha los yog ICs

, yuav tsum xav txog cov stray solder ncoo, los yog siv lo lus dawb xim kom paub qhov txawv, xim dawb thickness yuav tsum yog 2 npaug ntawm lub thickness ntawm lub ncoo (golden txoj kev).

17-5. Cov kab mob tin los yog ntau dhau ntawm cov oxides tshwm sim los ntawm luv luv Circuit Court ntawm PUMP yuav tsum tau ntxuav ntawm lub cub tawg los yog ntau dua hloov kho cov solder nyob rau hauv lub tin da dej.