Kugwiritsa ntchito kwaSMT X-ray makina oyendera- Kuyesa Chips

Cholinga ndi njira yoyesera chip

Cholinga chachikulu cha kuyesa kwa chip ndikuzindikira zinthu zomwe zimakhudza mtundu wazinthu popanga mwachangu komanso kupewa kupanga batch mopanda kulolerana, kukonza ndi zidutswa.Iyi ndi njira yofunika kwambiri yoyendetsera khalidwe la mankhwala.Ukadaulo wowunika wa X-RAY wokhala ndi fluoroscopy wamkati umagwiritsidwa ntchito poyang'ana mosawononga ndipo nthawi zambiri amagwiritsidwa ntchito kuti azindikire zolakwika zosiyanasiyana pamaphukusi a chip, monga kusenda, kuphulika, kusanja ndi kukhulupirika kwa bond.Kuphatikiza apo, kuyang'ana kosawonongeka kwa X-ray kumathanso kuyang'ana zolakwika zomwe zingachitike pakupanga kwa PCB, monga kusayenda bwino kapena kutseguka kwa mlatho, zazifupi kapena kulumikizana kwachilendo, ndikuzindikira kukhulupirika kwa mipira ya solder mu phukusi.Sikuti amangozindikira zolumikizira zosaoneka za solder, komanso amasanthula zotsatira zowunikira moyenera komanso mochulukira kuti azindikire zovuta.

Mfundo yowunikira chip yaukadaulo wa X-ray

Zipangizo zowunikira za X-RAY zimagwiritsa ntchito chubu cha X-ray kupanga ma X-ray kudzera pa chip sampuli, zomwe zimawonetsedwa pa wolandila zithunzi.Kujambula kwake kwapamwamba kwambiri kumatha kukulitsidwa mwadongosolo ndi nthawi za 1000, motero kulola kuti mawonekedwe amkati a chip awonetsedwe momveka bwino, ndikupereka njira yabwino yowunikira kuti apititse patsogolo "kudutsa kamodzi" ndikukwaniritsa cholinga cha "zero". zovuta".

M'malo mwake, pamaso pa msika zikuwoneka zenizeni koma mawonekedwe amkati a tchipisi amenewo ali ndi zolakwika, zikuwonekeratu kuti sangathe kusiyanitsa ndi maso.Pokhapokha pakuwunika kwa X-ray komwe "chifaniziro" chimawululidwa.Chifukwa chake, zida zoyezera X-ray zimapereka chitsimikizo chokwanira ndipo zimagwira ntchito yofunika pakuyesa tchipisi pakupanga zinthu zamagetsi.

Ubwino wa PCB x ray makina

1. Chiwopsezo cha kufalikira kwa zolakwika zamachitidwe ndi 97%.Zowonongeka zomwe zingayang'anitsidwe zikuphatikizapo: solder zabodza, kugwirizana kwa mlatho, kuyimitsidwa kwa piritsi, solder yosakwanira, mabowo a mpweya, kutayikira kwa chipangizo ndi zina zotero.Makamaka, X-RAY imathanso kuyang'ana BGA, CSP ndi zida zina zobisika za solder.

2. Kuphunzira kwakukulu kwa mayeso.X-RAY, zida zowunikira mu SMT, zimatha kuyang'ana malo omwe sangathe kuyang'aniridwa ndi maso amaliseche komanso kuyezetsa pamizere.Mwachitsanzo, PCBA imaweruzidwa kuti ndi yolakwika, yomwe imaganiziridwa kuti ndi PCB yamkati yosanjikiza yopuma, X-RAY imatha kufufuzidwa mwachangu.

3. Nthawi yokonzekera mayeso imachepetsedwa kwambiri.

4. Itha kuwona zolakwika zomwe sizingadziwike modalirika ndi njira zina zoyesera, monga: solder zabodza, mabowo a mpweya ndi kuumba kosauka.

5. Zipangizo zoyendera X-RAY kwa matabwa a mbali ziwiri ndi multilayer kamodzi kokha (ndi ntchito ya delamination).

6. Perekani zidziwitso zoyenera zoyezera zomwe zimagwiritsidwa ntchito poyesa njira yopangira mu SMT.Monga solder phala makulidwe, kuchuluka kwa solder pansi pa olowa solder, etc.