Yonke imihla ifunde i-PCB encinci kwaye ndiyakholelwa ukuba ndinokuba nobuchule ngakumbi emsebenzini wam. Namhlanje, ndifuna ukwazisa 16 iintlobo PCB weld iziphene ukusuka iimpawu imbonakalo, iingozi, oonobangela.
1.Pseudo Soldering
Iimpawu zenkangeleko:kukho umda ocacileyo omnyama phakathi kwe-solder kunye ne-lead yecandelo okanye i-foil yobhedu, kwaye i-solder i-concave ukuya kumda.
Iingozi:ayikwazi ukusebenza kakuhle
Oonobangela:1) iingcingo ezikhokelayo zamacandelo azihlambulukanga kakuhle, azikho i-tinned okanye i-oxidized.
2) I-PCB ayicocekanga, kwaye umgangatho wokutshizwa kwe-flux awulungile
2. Ukuqokelela i-solder
Iimpawu zenkangeleko:Amalungu e-Solder akhululekile, amhlophe kwaye aphelile.
Iingozi:amandla oomatshini awonelanga, i-welding virtual
Oonobangela:1) umgangatho ophantsi we-solder.2) ukushisa okunganeleyo kwe-welding.3) xa i-solder ingaqini, ukukhokela kwecandelo kuyakhululeka.
3.I-solder eninzi kakhulu
Iimpawu zenkangeleko:Ubuso be-solder bu-convex
Iingozi:Inkunkuma yesolder kwaye inokuba neziphene
Oonobangela:ukurhoxiswa solder kusemva kwexesha
4. I-solder encinci kakhulu
Iimpawu zenkangeleko:Indawo ye-welding ingaphantsi kwe-80% ye-welding pad, kwaye i-solder ayifaki inguqu egudileyo.
Iingozi:amandla oomatshini awonelanga,
Oonobangela:I-1) ukungahambi kakuhle kwe-solder okanye ukuhoxiswa kwe-solder kwangaphambi kwexesha. 2) i-flux eyaneleyo.3) ixesha le-welding lifutshane kakhulu.
5. I-rosin welding
Iimpawu zenkangeleko:Kukho intsalela ye-rosin kwi-weld
Iingozi:ukuqina komonakalo awanelanga, ukuqhuba kubi, xa kunokwenzeka ukuba kuvuliwe kwaye kuvaliwe
Oonobangela:I-1) umatshini we-welding ngokugqithiseleyo okanye ukungaphumeleli.2) ixesha elaneleyo le-welding kunye nokufudumeza.3) ifilimu ye-oxide ye-surface ayisuswanga.
6. hyperthermia
Iimpawu zenkangeleko:Umdibaniso we-solder umhlophe, ngaphandle kwe-metallic luster, umphezulu urhabaxa.
Iingozi:Kulula ukukhupha i-welding pad kunye nokunciphisa amandla
Oonobangela:I-iron yokuthambisa inamandla kakhulu kwaye ixesha lokufudumeza lide kakhulu
7. kubanda ukuwelda
Iimpawu zenkangeleko:umphezulu ube ngamasuntswana e-tofu slag, ngamanye amaxesha anokuba neentanda
Iingozi:Ubude obuphantsi kunye nokungahambi kakuhle kombane
Oonobangela:i-solder iyancipha ngaphambi kokuqina.
8. Ukungena okubi
Iimpawu zenkangeleko:ujongano phakathi kwe-solder kunye ne-welding inkulu kakhulu, ayigudi
Iingozi:Ubunzulu obuphantsi, obungahambekiyo okanye obuphakathi
Oonobangela:I-1) iindawo ze-welding azihlambulukanga 2) i-flux eyaneleyo okanye umgangatho ombi.3) iindawo ze-welding azifudumala ngokupheleleyo.
9. i-dissymmetry
Iimpawu zenkangeleko:ipleyiti ye-solder ayigcwali
Iingozi:Ubunzima obunganelanga
Oonobangela:I-1) i-solder encinci yamanzi.2) i-flux eyaneleyo okanye umgangatho ophantsi.3) ukufudumeza okwaneleyo.
10. Ilahleko
Iimpawu zenkangeleko:iingcingo ezikhokelayo okanye amalungu angashukunyiswa
Iingozi:embi okanye musa conduction
Oonobangela:I-1) intshukumo ekhokelayo ibangela ukungabikho ngaphambi kokuba i-solder iqiniswe.2) i-lead ayiphathwa kakuhle (ihlupheke okanye ingangenwanga)
11.Solder uqikelelo
Iimpawu zenkangeleko:kubonakala cusp
Iingozi:Imbonakalo embi, kulula ukwenza ibhulorho
Oonobangela:1) i-flux encinci kunye nexesha elide lokufudumeza.2) ukukhutshwa ngokungafanelekanga I-engile yentsimbi
12. Uqhagamshelwano lwebhulorho
Iimpawu zenkangeleko:Uqhagamshelo lwengcingo olusecaleni
Iingozi:Isiphaluka esifutshane sombane
Oonobangela:1) i-solder egqithisileyo. 2) ukufuduka okungafanelekanga I-Angle yentsimbi ye-soldering
13.Pin Imingxuma
Iimpawu zenkangeleko:Imingxuma ibonakala kwi-amplifiers ebonakalayo okanye ephantsi
Iingozi:Amandla anganeleyo kunye nokubola okulula kwamalungu e-solder
Oonobangela:umsantsa phakathi kocingo olukhokelayo kunye nomngxuma we-welding pad mkhulu kakhulu.
14.Iqamza
Iimpawu zenkangeleko:ingcambu yocingo olukhokelayo ine-spitfire solder uplift kunye nomgodi wangaphakathi
Iingozi:Ukuqhuba okwethutyana, kodwa kulula ukubangela ukuqhuba kakubi ixesha elide
Oonobangela:1) umsantsa omkhulu phakathi kwelothe kunye ne-welding pad hole.2) ukungeniswa kwelothe engalunganga.3) ukuplaga kabini ipaneli ngomngxuma kuthatha ixesha elide ukuwelda, kwaye umoya ongaphakathi komngxuma uyakhula.
15. Ifoyile yobhedu phezulu
Iimpawu zenkangeleko:ifoyile yobhedu ukusuka kwibhodi eprintiweyo yokuhluba
Iingozi:I-pcb yonakele
Oonobangela:ixesha lokuwelda lide kakhulu kwaye ubushushu buphezulu kakhulu.
16. Ukuxobula
Iimpawu zenkangeleko:i-solder esuka kwifoyile yobhedu exobula (hayi ifoyile yobhedu kunye nokuhluba kwePCB)
Iingozi:umephuli wojikelezo
Oonobangela:ukugquma kwentsimbi engalunganga kwi-welding pad.