Kuongorora Solder Paste: Gwaro Rakakwana reSPI reSMT Production

Kuongororwa kwePCBA SPI

1. ziviso

Solder paste inoshanda sechinhu chakakosha chekubatanidza pakati pePCB pads nezvikamu zvemagetsi muhunyanzvi hwekuisa pamusoro (SMT). Hunhu hwekudhinda solder paste hunosarudza zvakananga kuvimbika kwekupedzisira kwezvikamu zvemagetsi. Kuisa paste zvisina kunaka kunotungamira kune zvikanganiso zvakaita sekuvharira, kuvhura, uye kusarongeka kwezvikamu. Kuongorora solder paste (SPI) kunoshanda senzvimbo yakakosha yekudzora hunhu, zvichiita kuti vagadziri vaone matambudziko ekudhinda vasati vaisa zvikamu uye vadzoserwa mvura.

2. Chii chinonzi Solder Paste Inspection (SPI)?

Kuongorora paste yesolder inzira yekuyera otomatiki iyo inoongorora hunhu hwepaste deposit mushure mekudhindwa kwestencil. Masisitimu eSPI akaiswa pakati peprinta yestencil nemuchina wekutora-uye-kuisa mumutsara wekugadzira weSMT.

Midziyo yemazuva ano yeSPI inoshandisa matekinoroji e3D optical scanning, kusanganisira structured light projection uye laser triangulation, kugadzira mamepu epamusoro-soro enzvimbo dzakaiswa paste. Izvi zvinogonesa kuyera kwakanyatsojeka kwegeometry yepaste zvichienderana nedhizaini.

Sisitimu Yekuongorora Solder Paste

Sisitimu Yekuongorora Solder Paste

3. Kushanda Kwakaita Kuongorora Solder Paste

3.1 Kuwanikwa kweData

Masisitimu emazuva ano e3D SPI anoshandisa mapatani echiedza akarongeka kana mitsetse yelaser pamusoro pePCB kuti atore topography yepaste. Kusiyana nemasisitimu ekare e2D anongoyera nzvimbo chete, tekinoroji ye3D inogadzira mamepu akazara ekukwirira kwepaste yega yega. Maitiro aya anogonesa kuyerwa kwevolumetric nekururama kwe micron-level, zvichipa data rakazara rekuongorora mhando.

3.2 Kuyera Paramita

Masisitimu eSPI anoyera maparamita ekunamira akakosha anosanganisira kureba, nzvimbo, vhoriyamu, uye chinzvimbo. Kuyerwa uku kunoenzaniswa otomatiki nedata reCAD/Gerber dhizaini uye miganhu yekushivirira yakatsanangurwa kare. Sisitimu iyi inoverenga kana dhipoziti yega yega iri mukati mezvinodiwa, zvichigonesa kusarudzwa kwekupasa/kukundikana kwepedhi rega rega riri pabhodhi panguva chaiyo.

3.3 Kuziva uye Kuronga Zvikanganiso Zvakakwana

Zvichibva padata rekuyera, maalgorithms eSPI anoona uye anoronga zvikanganiso zvakajairika zvekudhinda. Sisitimu iyi inoratidza huwandu hwepaste isina kukwana, paste yakawandisa, kusarongeka kwenzvimbo, kubatana pakati pemapedhi ari pedyo, uye kugoverwa kusina kuenzana. Chikanganiso chimwe nechimwe chinorongwa nerudzi, kuoma, uye nzvimbo yekuongorora kwemushandisi nekugadzirisa maitiro.

4. Tsanangudzo yeMagetsi ekuongorora Key Solder Paste

Kunzwisisa maparameter eSPI kwakakosha pakududzira mhedzisiro yekuongorora uye kugadzirisa maitiro ekudhinda. Tafura inotevera inopfupikisa zviyero zvekutanga zvakayerwa panguva yekuongorora solder paste:

Parameter tsananguro Typical Tolerance
Kureba kweNamatidza Ukobvu hwakamira hwepaste papedhi ± 20%
Namatidza Vhoriyamu Vhoriyamu = Kureba × Nzvimbo ± 15%
Nzvimbo yeNamatidza Kufukidza nzvimbo pamusoro pepad ± 25%
Chinzvimbo Chinobviswa Kutsauka kwenzvimbo yekuisa padhi kubva pakati ≤ 50 µm
Chiyero cheChimiro Kutsauka kwejiyometri kubva pachimiro chinotarisirwa <10%

Kureba kwakasiyana kunokanganisa simba remajoini e solder—kureba kusina kukwana kunokonzera majoini asina simba nepo kukwirira kwakanyanya kuchikurudzira kubatana. Vhoriyamu ndiyo chiratidzo chakakosha chemhando yejoini ye solder. Kugadziriswa kwenzvimbo kunokanganisa zvakananga kurongeka kwekuiswa kwechikamu panguva yekubatanidzwa.

5. Zvikanganiso Zvakajairika zvePaste uye Kuonekwa kweSPI

5.1 Paste Isina Kukwana

Kusakwana kwepaste kunoitika kana huwandu hwedipoziti huchiderera pasi pemiganhu inogamuchirika, kazhinji kunokonzerwa nekuvharika kweaperture yestencil kana kumanikidzwa kusina kukwana kwesqueegee. Masisitimu eSPI anoona dambudziko iri nekuyera vhoriyamu kana nzvimbo iri pasi pemuganho wepasi. Izvi zvinotungamira kumajoini asina kusimba kana akavhurika mushure mekuyererazve.

5.2 Paste Yakawandisa

Kuiswa kwepaste yakawandisa kunokonzerwa nekuzara kwestencil kana kumhanya kunononoka kwekudhinda. SPI inoona izvi kana zviyero zvehurefu kana vhoriyamu zvikapfuura miganhu yepamusoro. Kuiswa kwepaste yakawandisa kunowedzera njodzi yekuvharirwa kwesolder uye kukanganisa makuva panguva yekubudazve kwemvura.

5.3 Kubatanidza

Kubatanidza mabhiriji kunoitika kana maburi epaste akapararira kupfuura miganhu yemapedhi uye akabatanidza mapedhi ari pedyo. SPI inoona kusanganisa mabhiriji kuburikidza nekuongorora nzvimbo iyo inoratidza maitiro asina kujairika ekufukidza paste. Sisitimu iyi inoratidza nzvimbo chaiyo yemabhiriji epaste kuti igadziriswe nekukurumidza.

5.4 Kusarongeka zvakanaka

Kusarongeka kwepaste kunoreva deposits offset kubva panzvimbo yakatarwa yepad center. SPI systems dzinoyera XY position offset nekuenzanisa paste centroids ne design coordinates. Kusarongeka kukuru kunokanganisa kurongeka kwekuisa zvikamu zvinotevera uye kuumbwa kwe solder joints.

5.5 Kugoverwa Kusina Kuenzana

Kugoverwa kwepaste isina kuenzana kunoratidzwa nekusiyana kwehurefu pane imwe chete kana huwandu husingaenderane mubhodhi. SPI inoona izvi nekuongorora kufanana kwehurefu mukati memadipoziti uye kuenzanisa zviyero mumapadhi akawanda. Kukanganisa uku kunokanganisa kugadzikana uye kuvimbika kwemajoini e solder.

6. Basa rekuongorora Solder Paste muSMT Quality Assurance

Kuongororwa kwepaste yesolder kunopa kukosha kukuru senzira yekutanga yekugadzirwa kweSMT.

Nekuona zvikanganiso zvekudhinda usati waisa zvikamu, SPI inodzivirira kugadzirisa kunodhura uye kucheka zvinhu. Mhinduro nekukurumidza inogonesa kugadzirisa nekukurumidza maparamita ekudhinda, zvichivandudza mwero wekutanga wekubudirira. Ruzivo rwekuongorora runotsigira kudzora maitiro ehuwandu uye kuongorora mafambiro ebasa kuti zvirambe zvichivandudzwa. Pamusoro pezvo, SPI inopa zvinyorwa zvemagetsi zvakakosha pakutevera mhando uye magwaro ekutevedzera mitemo.

7. Kuitwa kweSPI uye Maitiro Akanakisisa

Kuongorora zvinobudirira kwepaste yesolder kunoda kurongwa kwakarongeka.

Gadzirisa michina yeSPI nguva nenguva kuti uchengetedze kuyera kwakarurama. Shandisa mastencil emhando yepamusoro uye gadzira hurongwa hwekuchenesa nguva dzose kudzivirira kuvharika kwevhu. Tsanangura zvakajeka zvinodiwa zvechigadzirwa uye tevera mafambiro ekuyera nekufamba kwenguva. Dzidzisa vashandisi zvakakwana kududzira data uye maitiro ekugadzirisa kuti uwedzere kukosha kweSPI mukugadzirwa kwako.

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8. Mhedziso

Kuongororwa kwepaste yesolder kwakakosha pakudzora mhando yeSMT. Nekuyera maparamita akakosha anosanganisira kureba, vhoriyamu, nzvimbo, nenzvimbo, masisitimu eSPI anoona zvikanganiso zvakaita sekunge paste isina kukwana, paste yakawandisa, bhiriji, uye kusarongeka zvisati zvakonzera kutadza kushanda zvakanaka. Kuita maitiro akasimba ekuongorora paste yesolder kunovandudza goho, kunoderedza mari yekugadzirisa, uye kunotsigira kugadzirisa maitiro anotungamirirwa nedata mukugadzira PCB assembly.

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