Kutheni le nto ukutyabeka ngokusesikweni kubalulekile kwiPCB?

Kwiinjineli ezininzi ze-electronics, mhlawumbi, banobuchwephesha bokuyila iibhodi zabo zePCB, kwaye bayazi kakuhle ukuba loluphi uhlobo lwemeko yokusebenza iPCB yabo eya kusetyenziswa kuyo, kodwa abanalo nofifi lokukhusela iibhodi zabo zesekethe kunye namalungu kunye nokwandisa ubomi benkonzo.Nantso into yokwaleka ngokusesikweni.

Yintoni ukutyabeka ngokusesikweni?

I-coating ehambelanayo yifilimu encinci ye-polymeric esetyenziswe kwibhodi yesekethe eprintiweyo (PCB) ukwenzela ukukhusela ibhodi kunye nezixhobo zayo kwindalo kunye nokuhlwa.Ifilim idla ngokusetyenziswa kwi-25- 250µm kwaye 'ihambelana' nokumila kwebhodi kunye nezinto zayo, igquma kwaye ikhusela amalungu e-solder, iintambo zamalungu e-elektroniki, iitrayisi eziveziweyo, kunye nezinye iindawo ezenziwe ngetsimbi ukusuka kumhlwa, ekugqibeleni zandisa ubomi bokusebenza. yePCB.

Kutheni ufuna i-coating ehambelanayo?

Ibhodi yesekethe esanda kuveliswa iya kwenza kakuhle, kodwa ukusebenza kunokuwohloka ngokukhawuleza ngenxa yezinto zangaphandle kwindawo yokusebenza kwayo.Iingubo ezihambelanayo zingasetyenziselwa kwiindawo ezininzi zokukhusela iibhodi zeesekethe eziprintiweyo kumswakama, ukutshiza ityuwa, iikhemikhali kunye nokushisa okugqithisileyo ukwenzela ukukhusela izinto ezifana nokubola, ukukhula kwesikhunta kunye nokusilela kombane.Ukhuseleko olubonelelwa ngokutyatyekwa ngokusesikweni luvumela ukuthambeka kwamandla ombane aphezulu kunye nezithuba ezisondeleleneyo zomzila, nto leyo eyenza ukuba abaqulunqi bakwazi ukuhlangabezana neemfuno zeminiaturization kunye nokuthembeka.

1. Iipropati ezikhuselayo zivumela ukucuthwa kwesithuba se-PCB conductor ngaphezu kwe-80%

2. Inokunceda ekupheliseni imfuno yeendonga ezintsonkothileyo nezintsonkothileyo.

3. Ubunzima obulula.

4. Ukukhusela ngokupheleleyo indibano ekuhlaselweni kweekhemikhali kunye ne-corrosive.

5. Ukuphelisa ukuthotywa kwentsebenzo enokubakho ngenxa yeengozi zokusingqongileyo.

6. Ukunciphisa uxinzelelo lokusingqongileyo kwindibano yePCB.

Ngokufanelekileyo, iingubo ezihambelanayo kufuneka zibonise ezi mpawu zilandelayo:

1. Isicelo esilula.

2. Ukususwa ngokulula, ukulungiswa kunye nokutshintshwa.

3. Ukuguquguquka okuphezulu.

4. Ukukhuselwa kwi-thermal kunye ne-mechanical shock.

5.Ukhuseleko kwiingozi zendalo ezibandakanya: ukufuma, iikhemikhali kunye nezinye izinto ezidlekayo.

Uyisebenzisa njani i-Conformal Coating?

Iindlela ezine eziphambili zokusebenzisa i-coating ehambelanayo:

1. Ukuntywila -kulinganiselwe kwizinto ezinganyangekiyo ngokukhawuleza ngokufuma, i-oxidation okanye ukukhanya.

2. I-robotic ekhethiweyo yokugquma -njenge-Asymtek, i-PVA okanye i-DIMA.Zonke iintlobo zokwaleka zingasetyenziswa ukuba intloko echanekileyo yokulahla ikhethiwe.

3. Ukutshiza – ukutshiza ngesandla kusetyenziswa indlwana yokutshiza okanye inkonkxa ye-aerosol.Zonke iingubo zingasetyenziswa ngale ndlela.

4. Ukuxukuxa - kufuna abasebenzi abachubekileyo nabanezakhono ukuze balungele iinjongo zemveliso.

Ekugqibeleni kuya kufuneka uqwalasele indlela yokunyanga egqitywe kukutyabeka okukhethiweyo, umoya owomileyo, i-oveni eyomileyo okanye ukunyangwa kokukhanya kwe-UV.Ukugquma kwamanzi kufuneka kumanziswe ngokucokisekileyo yonke imiphezulu kwaye unyange ngaphandle kokushiya iziphene.Ii-epoxies zinomdla ngakumbi kwiziphene ezingaphezulu.Ii-epoxies nazo zinokucutheka ngelixa zisetwa kwaye zinokuphulukana nokuncamathela ngenxa yoko Ukongeza;ukucutheka kakhulu ngexesha lokunyanga kunokubeka uxinzelelo olumandla kumatshini kumalungu esekethe.

Ukuba ufuna ukufunda ngakumbi malunga ne-conformal coating, i-PHILIFAST iya kukunika isikhokelo malunga nayo.PHILIFAST sinikele ingqalelo iinkcukacha nganye eyodwa ukunika iibhodi PCB ubomi inkonzo eliphezulu ngokukhusela inxalenye nganye ebalulekileyo naziphi na amacandelo kunye nesekethe.


Ixesha lokuposa: Jun-22-2021