Kutheni le nto isiko le-PCB yobhedu yokubeka iqamza lomphezulu?

Kutheni le nto isiko le-PCB yobhedu yokubeka iqamza lomphezulu?

PCB Customukugquma komphezulu sesinye seziphene zomgangatho oxhaphakileyo kwinkqubo yemveliso yePCB.Ngenxa yobunzima benkqubo yokuvelisa i-PCB kunye nokugcinwa kwenkqubo, ngakumbi kunyango olumanzi lwekhemikhali, kunzima ukunqanda iziphene zokugquma ebhodini.

Ukugquma kwiibhodi PCBeneneni yingxaki yamandla okudibanisa okungalunganga ebhodini, kwaye ngokongezwa, ingxaki yomgangatho womphezulu ebhodini, ebandakanya imiba emibini:

1. Ingxaki yokucoceka komphezulu wePCB;

2. Uburhabaxa obuncinci (okanye amandla angaphezulu) komphezulu wePCB;zonke iingxaki zamagwebu kwibhodi yesekethe zinokushwankathelwa njengezi zizathu zingasentla.Amandla okubopha phakathi kwengubo ahluphekileyo okanye aphantsi kakhulu, kwimveliso elandelayo kunye nenkqubo yokucubungula kunye nenkqubo yokuhlanganisana kunzima ukuchasana nemveliso kunye nenkqubo yokucubungula eveliswa kwixinzelelo lokugubungela, uxinzelelo lomatshini kunye noxinzelelo lwe-thermal, njalo njalo, okubangelwa ezahlukeneyo. amaqondo okwahlula phakathi kwesenzeko sokugquma.

Ezinye izinto ezibangela umgangatho ophantsi we-PCB kwimveliso kunye nokulungiswa kwazo zishwankathelwa ngolu hlobo lulandelayo:

I-substrate ye-PCB yesiko - iingxaki zonyango lwenkqubo yepleyiti yobhedu;Ngokukodwa kwezinye substrates ezibhityileyo (ngokubanzi ngaphantsi kwe 0.8 mm), ngenxa yokuba substrate rigidity ihlwempuzekileyo, engathandekiyo ukusetyenziswa brush ipleyiti umatshini ibrashi, isenokungakwazi ukususa ngempumelelo substrate ukuze kuthintelwe oxidation umphezulu wefoyile yobhedu kwinkqubo yemveliso. kunye nokucubungula kunye nomgangatho okhethekileyo wokucwangcisa, ngelixa umaleko uncinci, ipleyiti yebrashi kulula ukuyisusa, kodwa ukucutshungulwa kweekhemikhali kunzima, Ngoko ke, kubalulekile ukunikela ingqalelo kulawulo kwimveliso kunye nokucubungula, ukuze ungabangeli ingxaki. ugwebu olubangelwa kukunganyangeki kwamandla okubopha phakathi kwefoyile yobhedu engaphantsi komhlaba kunye nekhemikhali yobhedu;xa umaleko wangaphakathi obhityileyo umnyama, kuya kubakho ubumnyama obumdaka kunye nobumnyama, umbala ongalinganiyo, kunye nobumnyama obubi bendawo.

Umphezulu webhodi PCB kwinkqubo machining (yokomba, lamination, milling, njalo njalo) okubangelwa oyile okanye olunye ulwelo ungcoliseko lolwelo unyango umphezulu umphezulu ihlwempu.

3. PCB ipleyiti yobhedu ezika ibrashi yobhedu ayilunganga: uxinzelelo lwepleyiti yokusila phambi kokutshona kobhedu lukhulu kakhulu, nto leyo ekhokelela kuguquko lomngxuma, kunye nefoyile yobhedu emngxunyeni kunye nokuvuza kwezinto ezisisiseko kumngxunya, okuya kubangela iqamza. isiganeko emngxunyeni kwinkqubo yokucwila kobhedu, i-plating, i-tin spraying kunye ne-welding;Nokuba ipleyiti yebrashi ayibangeli ukuvuza kwe-substrate, ipleyiti yebrashi egqithisileyo iya kwandisa uburhabaxa bomngxunya wobhedu, ngoko ke kwinkqubo ye-micro-corrosion coarsening, ifoyile yobhedu kulula ukuvelisa into eninzi kakhulu, apho kwakhona kuya kuba ngumngcipheko othile womgangatho;Ke ngoko, ingqwalasela kufuneka ihlawulwe ekomelezeni ulawulo lwenkqubo yeplate yebrashi, kwaye iiparamitha zenkqubo yeplate yebrashi zinokuhlengahlengiswa zibe yeyona ilungileyo ngovavanyo lwamanqaku okunxiba kunye novavanyo lwefilim yamanzi.

4. Ihlanjwe ingxaki PCB: ngenxa yobhedu enzima electroplating processing kufuneka kudlule eninzi iikhemikhali ulwelo ukusetyenzwa amayeza, zonke iintlobo asidi-isiseko isinyibilikisi non-polar eziphilayo ezifana amachiza, ukuhlamba ubuso ibhodi ayicocekanga, ingakumbi uhlengahlengiso enzima ubhedu ngaphezu koko. arhente, hayi kuphela kunokubangela cross-ungcoliseko, kwakhona kuya kubangela ukuba ibhodi ukujongana processing lendawo isiphumo embi okanye embi unyango, isiphene ukungalingani, kubangele ezinye amandla ezibophelelayo;ngoko ke, ingqalelo kufuneka ihlawulwe ekomelezeni ulawulo lokuhlamba, ingakumbi kubandakanywa nokulawulwa kokuhamba kwamanzi okucoca, umgangatho wamanzi, ixesha lokuhlamba, kunye nexesha lokuthontsiza lamacandelo eplate;ngakumbi ebusika, iqondo lokushisa liphantsi, umphumo wokuhlamba uya kuncitshiswa kakhulu, ingqalelo engakumbi kufuneka ihlawulwe kulawulo lokuhlamba.