Kuongorora Kukundikana kwePCB Measling uye Delamination

Kunzwisisa Measling uye Delamination

Mesling muPCBs

Measling inotaridza sediki, chena, uye discrete makwapa kana michinjikwa pasi pePCB laminate pamusoro, yakafanana negwirikwiti. Izvi zvinowanzoonekwa zvakatenderedza girazi weave yelaminate uye inoratidza madiki-akatsemuka mukati meresin.

Zvinokonzera Measling

• Thermal Stresses: Kudzokorora kupisa bhasikoro kunogona kukonzera Pcb zvinhu kuwedzera uye chibvumirano, zvichiita kuti micro-cracks.
• Mechanical Stresses: Kubata zvisina kufanira kana simba rakawandisa panguva yegungano rinogona kuunza kushushikana kwekuputsika mune laminate.
• Makemikari Maitiro: Aggressive makemikari kurapwa panguva Pcb kugadzira inogona kunetesa iyo laminate chimiro, ichifanotungamira kune measling.

Delamination muPCBs

Delamination inoreva kupatsanurwa pakati pezvikamu zvePCB laminate kana pakati pelaminate nemhangura foil, zvichikonzera kurasikirwa kwechimiro chekuvimbika uye zvichikonzera kutadza kwemagetsi.

Zvikonzero zveDelamination

• Kupisa Kwakanyanyisa: Kukwirisa tembiricha panguva yekutengesa kana mamwe maitiro ekugadzira anogona kunetesa chisungo chekunamatira pakati pematanho.
• Kupinda munyoro: Unyoro hwakanyungudutswa hunowedzera kana hwapisa, huchigadzira kudzvinyirirwa kwemukati kunogona kutungamirira mukuparadzana.
• Manufacturing Defects: Kuporeswa kusina kukwana kwelaminate kana kushandiswa kusina kunaka kwekunamatira panguva Kugadzirwa kwePCB inogona predispose bhodhi kuti delamination.

Nzira Dzekudzivirira

Kudzivirira measling uye delamination kunoda nzira ine mativi mazhinji, yakatarisana nekusarudzwa kwezvinhu, maitiro ekugadzira, uye maitiro ekubata.

Kusarudzwa Kwezvinhu uye Kubata

• Yakakwira-Yemhando Zvinhu. Sarudza maPCB ma substrates ane epamusoro ekupisa uye emuchina zvivakwa kuti umire kushushikana pasina kupaza.
• Kuchengetera Kwakakodzera: Chengetedza nharaunda yakakodzera kudzivirira kunyudzwa kwemwando nePCB zvinhu, kuderedza njodzi yekudonha panguva yekutengesa.

Manufacturing and Process Controls

• Controlled Thermal Cycling: Shandisa inodzorwa yakakwira-kumusoro uye inotonhorera-pasi mitengo panguva yekutengesa kuderedza kupisa kushushikana.
• Optimized Chemical Processing: Shandisa makemikari akapfava uye yakagadziridzwa nguva yekuratidzwa panguva PCB kugadzirisa uye kuchenesa kuchengetedza laminate kuperera.
• Kurapa Kwakakwana: Ita shuwa kupora kwakazara kwelaminate uye zvinonamira kumisikidza yakasimba zvisungo pakati pematanho uye nemhangura foil.

Kuonekwa uye Kuedzwa kwePCB Measling uye Delamination

Nzira dzepamusoro dzekuona

Kuve nechokwadi chekuvimbika kwePCB uye kudzivirira nyaya dzakaita semeya uye delamination, nzira dzekuona dzepamusoro dzakakosha. Nzira idzi dzinobatsira kuona hurema pakutanga kwekugadzira, zvichibvumira matanho ekugadzirisa kuti atorwe maPCB asati ashandiswa.

Peji rino nderekuziva zviratidzo zvekukundikana uye kuparadzanisa measling kubva pakubvisa masero panguva yekuongorora. Kuti uwane matanho ekudzivirira masero, shandisa gwara rekudzivirira measling rePCB ; kuti uwane zvinyorwa, kuongorora, uye kudzora kwevatengesi, enzanisa kesi yacho nemaitiro ekusimbisa mhando yePCB.

Kuongorora X-Ray: Iyi nzira yekuyedza isingakuvadzi inogona kuona zvikanganiso zvemukati zvakaita sekuyera uye kubvisa ganda nekugadzira mifananidzo yakadzama yechimiro chemukati chePCB. Kuongorora X-ray kunobatsira zvikuru pakuona matambudziko asingaonekwe pamusoro.

Kufungidzira Zvinopisa: Nekushandisa makamera e infrared, kufungidzira zvinopisa kunogona kuona maitiro ekupisa asina kujairika anogona kuratidza kuvapo kwemukati memukati kana kucheka. Nzira iyi inoshanda pakuona nzvimbo dzine mafambiro ekupisa asina kunaka, ayo anowanzo kuve mugumisiro wezvikanganiso zvechimiro.

Kuedzwa kweUltrasonic: Mafungu eUltrasonic anogona kushandiswa kuona delamination nekuyera kuratidzwa uye kufambiswa kwemafungu eruzha kuburikidza nePCB layers. Chero kukanganiswa kwemaitiro emafungu anotarisirwa kunogona kuratidza kuvapo kwedelamination kana zvimwe zvinetso zvemuumbirwo.

Kuvimbika Kwayedza

Kuongorora Kushushikana Kwezvakatipoteredza (ESS): Maitiro aya anosanganisira kuisa maPCB mumamiriro ezvinhu akaomarara, akadai sekupisa kwakanyanya, hunyoro, uye kudedera, kuti vaone matambudziko anogona kuvapo. ESS inobatsira kuona kuti maPCB anogona kutsungirira mamiriro ekushanda akaoma pasina kukundikana nekuda kwekukanganiswa kana kupatsanurwa.

Miedzo yeThermal Cycling: MaPCB anodzokororwa kudzokororwa kwekupisa nekutonhodza kuti vatevedzere kushushikana kwekupisa kwavachasangana nako panguva yekushandiswa chaiko. Nzira iyi yekuedza inobatsira kuona mapuranga anogona kutsemuka kana kupwanyika nekuda kwekupisa.