Umnwe wegolide
Kwizinti zemomemo yekhompyuter kunye namakhadi emizobo, sinokubona umqolo wokunxibelelana ngegolide, obizwa ngokuba "yiminwe yegolide". Umnwe wegolide (okanye isinxibelelanisi somphetho) kwi-PCB uyilo kunye neshishini lemveliso lisebenzisa isinxibelelanisi somnxibelelanisi weBhodi ukuba sinxibelelane nenethiwekhi. Okulandelayo, masiqonde indlela yokujongana neminwe yegolide kwi-PCB kunye neenkcukacha ezithile.
Indlela yonyango lomphezulu we-PCB yomnwe wegolide
I-1. I-Ensecroplaell yegolide: Ubunzima ukuya kwi-3-50U ", ngenxa yokusebenza kwayo ebalaseleyo, i-oxidation isetyenziselwa ukubetheka kwegolide, kodwa kusetyenziswa kuphela kwi-proble yegolide, isetyenziselwa kuphela iminwe yegolide efana neminwe yegolide.
2. Ukuntywila kwegolide: Ubunzima buhlangane nge-1U ", ukuya kwi-CARD ye-PCB engaphezulu, i-CORD, i-IC, i-IC, i-CHE, i-CORDS yePCBS yenkqubo yeBhodi yeBhodi. Ixabiso lenkqubo yegolide yegolide iphantsi kakhulu kunelo yenkqubo ye-electro-golide. Umbala wegolide yokuntywila yigolide.
Iinkcukacha ze-Golide Reflow kwi-PCB
1) Ukuze wonyuse ukuxhathisa impahla yegolide yeminwe yegolide, iminwe yegolide ifuna ukuba ifakwe ngegolide enzima.
2) Iminwe yegolide kufuneka icoceke, ihlala i-45 °, ezinye ii-angles, njl njl. Ukuba akukho ngxaki uyilo, kukho ingxaki; I-45 ° Chamfer kwi-PCB iboniswe kumzobo ongezantsi:
3) The gold finger needs to be treated as a whole piece of solder mask to open the window, and the PIN does not need to open the steel mesh;
I-4) Ukuntywilisa i-tin kunye neepads zokuntywila kwentsimbi kufuneka zibe kwinqanaba le-14mil ukusuka phezulu komnwe; Kucetyiswa ukuba ipad ingaphezulu kwe-1mm ukusuka kumnwe ngexesha loyilo, kubandakanya neepads;
5) Musa ukusasaza ubhedu kumphezulu womnwe wegolide;
I-6) Zonke iindawo zoluhlu lwangaphakathi lomnwe wegolide kufuneka zinqunyulwe ubhedu, zihlala zibububanzi be-3mm enkulu; Ingasetyenziselwa i-hard-therper yokucheba umobhetha kwaye umnwe uphela unqumle ubhedu.
Ngaba "igolide" yegolide yegolide?
Okokuqala, masiqonde iikhonsepthi ezimbini: igolide ethambileyo negolide enzima. Igolide ethambileyo, igolide ngokubanzi. Igolide enzima yigolide ngokubanzi yigolide enzima.
Umsebenzi ophambili weminwe yegolide kukunxibelelana, kufuneka ube nokwenzeka ngempumelelo lombane, kudlule ukuxhathisa, ukumelana ne-oxidation kunye nokunganyangeki.
Ngenxa yokuba isikhundla segolide esicocekileyo (igolide) sithambile, iminwe yegolide ngokubanzi ayisebenzisi igolide, kodwa kuphela igolide 'kuphela yegolide (igolide eqinileyo) "inokuthi ifumaneke kuyo, kodwa inokuthi ifumane impumelelo entle yegolide, kodwa ikwenze ukuba ixhathise i-arasion yokunganyangeki kunye nokunganyangeki i-arasion yokunganyangeki kunye nokunganyangeki kwe-oxidon.
Ngaba i-PCB isebenzise "igolide ethambileyo"? Impendulo injalo ikhoyo, enjengomphezulu woqhakamshelwano lwamaqhosha efowuni, i-Cob (i-COB (i-CHIP) nge-Aluminium wire njalo njalo. Ukusetyenziswa kwegolide ethambileyo kusekwe kwigolide ye-Nickel kwiBhodi yeSekethi nge-elektroplaItha, kwaye ulawulo lwalo lukhulu lube bhetyebhetye ngakumbi.
