Amathiphu Okusebenza Kabusha kwe-PCB ekupheleni kwe-SMT PCBA

Ukusebenza kabusha kwe-PCB

 

Ngemva kokuhlolwa kwe-PCBA sekuqediwe, i-PCBA enesici idinga ukulungiswa.Inkampani inezindlela ezimbili zokulungisa i-SMT PCBA.

Enye iwukusebenzisa insimbi yokushisa ehlala njalo (i-welding manual) ukuze ilungiswe, kanti enye iwukusebenzisa ibhentshi lokulungisa (i-hot air welding) ukulungisa.Kungakhathaliseki ukuthi iyiphi indlela eyamukelwayo, kuyadingeka ukwakha i-solder enhle ngesikhathi esifushane.

Ngakho-ke, lapho usebenzisa i-soldering iron, kuyadingeka ukuthi ugcwalise iphuzu le-soldering ngemizuzwana engaphansi kwe-3, mhlawumbe imizuzwana emi-2.

Ububanzi bentambo ye-solder budinga ukubeka kuqala ukuze usebenzise ububanzi φ0.8mm, noma usebenzise u-φ1.0mm, hhayi u-φ1.2mm.

Ukulungiselelwa kwezinga lokushisa lensimbi ye-soldering: intambo yokushisela evamile iye kumagiya angu-380, intambo yokushisela enezinga lokushisa eliphezulu iye kumagiya angu-420.

Indlela yokwenza kabusha i-Ferrochrome wukushisela okwenziwa ngesandla

1. Ukwelashwa kwe-soldering iron entsha ngaphambi kokusetshenziswa:

I-soldering iron entsha ingasetshenziswa ngokujwayelekile ngemuva kokuthi ithiphu lensimbi yokunamathisela lifakwe ungqimba lwe-solder ngaphambi kokusetshenziswa.Lapho i-soldering iron isetshenziswa isikhathi esithile, kuzokwakhiwa ungqimba lwe-oxide phezu naseduze kwendawo ye-blade yethiphu ye-soldering iron, okuzodala ubunzima "ekudleni ithini".Ngalesi sikhathi, ungqimba lwe-oxide lungafakwa, futhi i-solder ingaphinda ifakwe.

 

2. Indlela yokubamba insimbi yokunamathisela:

Ukubamba okuhlanekezela: Sebenzisa iminwe emihlanu ukuze ubambe isibambo sensimbi ethambile esandleni sakho.Le ndlela ifanele ama-ayina e-solder kagesi aphezulu ukuze ashise izingxenye ezinokushisa okukhulu kokushisa.

I-Ortho-grip: Bamba isibambo se-ayina e-soldering ngeminwe emine ngaphandle kwesithupha, bese ucindezela isithupha ngalapho kuya ngaso insimbi.I-soldering iron esetshenziswa kule ndlela nayo inkulu uma kuqhathaniswa, futhi iningi lazo lingamathiphu ensimbi egobile.

Indlela yokubamba ipeni: ukubamba insimbi yokudambisa kagesi, njengokubamba ipeni, kulungele izinsimbi ezisebenza ngogesi ezinamandla amancane ukushisela izingxenye ezincane ezizoshiselwa.

 

3. Izinyathelo zokushisela:

Ngesikhathi senqubo yokushisela, amathuluzi kufanele abekwe kahle, futhi insimbi ye-solder kagesi kufanele ihambisane ngokuqinile.Ngokuvamile, kungcono ukusebenzisa i-solder wire ene-rosin ukuze ifakwe emanzini.Bamba insimbi yokunamathisela ngesandla esisodwa kanye nocingo lwe-solder ngesinye.

Hlanza ithiphu lensimbi Shisisa iphoyinti Ncibilikisa i-solder Hambisa ithiphu lensimbi yokunamathisela Susa insimbi yokunamathisela

① Ngokushesha thinta ithiphu lensimbi eshisiwe nelothayini ocingweni olunama-cored, bese uthinta indawo ehlangene ye-solder, sebenzisa i-solder encibilikisiwe ukusiza ukudlulisa ukushisa kokuqala kusuka ensimbi e-solder kuya endaweni yokusebenza, bese ususa ucingo lwe-solder ukuze uxhumane i-soldering Ingaphezulu lephuzu lensimbi yokunamathisela.

②Thinta ichopho lensimbi yokunamathisela kuphini/iphedi, bese ubeka intambo yokuxhuma phakathi kwephuzu lensimbi yokunamathisela kanye nephini ukuze wenze ibhuloho elishisayo;bese ususa ngokushesha ucingo lokunamathisela ohlangothini oluphambene nendawo ye-soldering.

Kodwa-ke, ngokuvamile kubangelwa izinga lokushisa elingafanele, ingcindezi eyeqile, isikhathi sokugcina esandisiwe, noma ukulimala kwe-PCB noma izingxenye ezibangelwa yilokhu okuthathu ndawonye.

 

4. Izinyathelo zokuphepha zokushisela:

Izinga lokushisa lethiphu ye-soldering iron kufanele lifanele.Amathiphu ahlukene wokushisa we-iron soldering azoveza izenzakalo ezihlukene lapho ebekwe phezu kwebhulokhi ye-rosin.Ngokuvamile, izinga lokushisa lapho i-rosin incibilika ngokushesha futhi ingakhiphi intuthu ifaneleka kakhulu.

Isikhathi se-solder kufanele sifanele, kusukela ekushiseni i-solder joint kuya ekuncibilikeni kwe-solder nokugcwalisa ukuhlanganiswa kwe-solder, ngokuvamile kufanele kuqedwe phakathi kwemizuzwana embalwa.Uma isikhathi se-solder side kakhulu, i-flux kumalungu e-solder izoshintsha ngokuphelele, futhi umphumela wokuguquguquka uzolahleka.

Uma isikhathi se-solder sifushane kakhulu, izinga lokushisa le-soldering iphuzu ngeke lifinyelele izinga lokushisa le-solder, futhi i-solder ngeke incibilike ngokwanele, okuzokwenza kalula kubangele i-solder yamanga.

Inani le-solder ne-flux kufanele lisetshenziswe ngendlela efanele.Ngokuvamile, ukusetshenziswa kwe-solder eningi noma encane kakhulu kanye ne-flux ekuhlanganyeleni kwe-solder kuzoba nomthelela omkhulu kwikhwalithi ye-solder.

Ukuvimbela i-solder ekuhlanganyeleni kwe-solder ukuthi ingagelezi ngokungahleliwe, i-solder efanelekile kufanele ibe ukuthi i-solder ithengiswa kuphela lapho idinga ukuthengiswa khona.Ekusebenzeni kwe-solder, i-solder kufanele ibe ngaphansi ekuqaleni.Lapho iphoyinti le-solder lifinyelela izinga lokushisa lokunamathisela futhi i-solder igeleza esikhaleni sephuzu le-soldering, i-solder izogcwaliswa kabusha ukuze iqedele i-solder ngokushesha.

Ungathinti amalunga e-solder ngesikhathi senqubo yokuhlanganisa.Lapho i-solder emajoyini e-solder ingaqini ngokuphelele, amadivaysi athengiswayo kanye nezintambo ezihlanganisweni ze-solder akufanele zihanjiswe, ngaphandle kwalokho amalunga e-solder azokhubazeka futhi i-welding ebonakalayo izokwenzeka.

Ungashisi izingxenye ezizungezile nezintambo.Lapho u-soldering, qaphela ukuthi ungashisi ungqimba lwe-plastic insulation yezintambo ezizungezile kanye nobuso bezingxenye, ikakhulukazi imikhiqizo enezakhiwo zokushisela ezihlangene kanye nokwakheka okuyinkimbinkimbi.

Yenza umsebenzi wokuhlanza ngemuva kokushisela ngesikhathi.Ngemuva kokuthi ukushisela sekuqediwe, ikhanda locingo elisikiwe kanye ne-tin slag ewiswe ngesikhathi sokushisela kufanele kususwe ngesikhathi ukuze kuvinjelwe izingozi ezifihliwe ekuweleni emkhiqizweni.

 

5. Ukwelashwa ngemva kokushisela:

Ngemuva kwe-welding, udinga ukuhlola:

Ukuthi ayikho i-solder.

Ingabe ukucwebezela kwamalunga e-solder kuhle?

I-solder ehlangene ayanele.

Ukuthi kukhona i-flux eyinsalela ezungeze amalunga e-solder.

Ukuthi kukhona i-welding eqhubekayo.

Ukuthi iphedi liwile.

Ukuthi kukhona imifantu emajoyintini e-solder.

Ingabe i-solder joint ayilingani?

Ukuthi amalunga e-solder abukhali yini.

Donsa ingxenye ngayinye ngama-tweezers ukuze ubone ukuthi akukho yini ukuxega.

 

6. Ukuchithwa:

Lapho ithiphu lensimbi ye-solder lishiswa yi-desoldering iphuzu, ngokushesha nje lapho i-solder incibilika, ukuhola kwengxenye kufanele kukhishwe ngendlela eqondile ebhodini lesifunda ngesikhathi.Kungakhathaliseki ukuthi ukufakwa kuphi kwengxenye, kungakhathaliseki ukuthi kulula ukuyikhipha, ungaphoqi noma uguqule ingxenye.Ukuze ungalimazi ibhodi lesifunda nezinye izingxenye.

Ungasebenzisi amandla amaningi uma uhlanza.Umkhuba wokugoqa nokunyakazisa ukuthintana nensimbi yokunamathisela kagesi mubi kakhulu.Ngokuvamile, othintana naye akavunyelwe ukususwa ngokudonsa, ukuthuthumela, ukusonta, njll.

Ngaphambi kokufaka ingxenye entsha, i-solder emgodini we-pad wire kufanele ihlanzwe, ngaphandle kwalokho i-pad yebhodi lesifunda izosonteka lapho ifaka ukuhola kwengxenye entsha.