Yakadhindwa redunhu bhodhi (Pcb) inogona kukamurwa kuita yakaoma pcb uye inochinjika pcb, iyo yekutanga inogona kuganhurwa mumhando nhatu: single-mativi pcb, mbiri-mativi pcb uye yakawanda-rukoko pcb. According to the quality grade, PCB can be divided into three quality grades: 1, 2 and 3, of which 3 is the highest requirement. Misiyano muPCB yemhando yepamusoro inotungamira mukunetseka uye mutsauko mukuyedza uye kuongorora nzira.

Parizvino, akaomarara mativi-maviri uye akawanda-masenduru PCBS vakatora yakakura yakati rebei yekushandisa mumagetsi, iine inoshanduka PCBS dzimwe nguva inoshandiswa mune dzimwe nguva. Naizvozvo, bepa rino rinotarisa pane yemhando yekutariswa kweyakaomarara mativi-maviri uye akawanda-maseru PCB. After PCB manufacturing, inspection must be carried out to determine whether the quality meets the design requirements. It can be said that quality inspection is an important guarantee to ensure the quality of products and the smooth implementation of subsequent procedures.

Yekuongorora chiyero

Pcb yekuongorora zviyero zvinonyanya kusanganisira zvinotevera zvinhu:

A. Mitemo yakatarwa nenyika yega yega;

B. Mauto emasoja enyika yega yega;

C. Maindasitiri zviyero, senge SJ / T10309;

D. pcb yekuongorora yekuraira yakagadzirirwa neanopa michina;

E. Unyanzvi zvinodiwa zvakaratidzirwa pcb dhizaini dhizaini.

Kune PCBS iyo yakaonekwa seyakakosha kumidziyo, izvi zvakakomba mamiparameter uye zviratidzo zvinofanirwa kuongororwa kubva kumusoro kusvika kumagunwe kuwedzera pakuongorora kwese.

Zvinhu zvekuongorora

Zvisinei nerudzi rwePCB, ivo vanofanirwa kupfuura nenzira dzakaenzana dzekutarisa mhando uye zvirongwa. According to the inspection method, the quality inspection items usually include appearance inspection, general electrical performance inspection, general technical performance inspection and metal coating inspection.

• Kuonekwa kwechitarisiko

Kuongorora kunoonekwa kuri nyore nerubatsiro rwemutongi, vernier caliper, kana girazi rinokudza. Zvinhu zvakaongororwa zvinosanganisira:

Ukobvu, kuomarara kwepamusoro uye kurwa kweplate.

B. Chitarisiko uye kukura kwegungano, kunyanya zviyero zvegungano zvinoenderana nemagetsi zvinobatanidza uye raidhi inotungamira.

C. Kuvimbika uye kujekesa kweiyo conductive pateni, uye kana paine zambuko pfupi maseketi, akavhurika maseketi, mabhureki kana maburi.

D. Surface mhando, kungave kune makomba, kukwenya kana pini pamakona akadhindwa kana mapadhi.

E. Nzvimbo yemakomba epad uye mamwe maburi. Tarisa uone kuti kana maburi akashaikwa here kana kuti akaboorwa zvisirizvo, kuti hupamhi hwemaburi hunosangana nezvinodiwa dhizaini uye kana paine nodules nemipengo.

F. Hunhu uye kuomarara kwepad kupfeka, kuomarara, kupenya uye kushomeka kwekukanganisa kwakasimudzwa.

G. Bemhapemha yepamusoro. Electroplating flux yunifomu, yakasimba, chinzvimbo chakarurama, kuyerera yunifomu, ruvara rwayo runoenderana nezvakakodzera zvinodiwa.

H. Hunhu hwemhando, senge iwo akasimba, akajeka uye akachena, pasina kukwenya, kupwanya kana kutyora.

• Kugara uchiongorora mashandiro emagetsi

Kune maviri marudzi ebvunzo pasi peiyi mhando cheki:

A. Kubatanidza kuita bvunzo. During this test, a multimeter is usually used to check the connectivity of the conductive pattern, with emphasis on the metallized perforations of double-sided PCBS and the connectivity of multi-layer PCBS. Pamuedzo uyu, mugadziri wePBB achapa kuongororwa kwePCB imwe neimwe isati yasiya imba yekuchengetera kuti ive nechokwadi chekuti mabasa ayo ekutanga azadzikiswa.

B. Insulation yekuita bvunzo. Bvunzo iyi yakagadzirirwa kutarisa kupokana kwekudzivirira pane imwe ndege kana pakati pendege dzakasiyana kuti ive nechokwadi chekudzivirira kwePCB.

• General technical technical kuongorora

General tekinoroji kuongorora kunoongorora solderability uye unhani adhesion kuongorora. Kune yekutanga, tarisa kunyorova kwesoder kune iyo conductive pateni. Zvekupedzisira, kuongororwa kunogona kuitwa nemazano akakodzera anotanga kunamirwa kune yakanamirwa pamadziro kuti iongororwe uye inogona kubviswa nekukurumidza kunyangwe mushure mekutsimbirira. Tevere, iyo yakanamirwa ndege inofanirwa kucherechedzwa kuona kuti peeling inoitika. Uye zvakare, dzimwe nzira dzekuongorora dzinogona kusarudzwa zvinoenderana nemamiriro ezvinhu chaiwo, senge kudonha kwesimbi yemhangura uye metallization kuburikidza neyakaomarara simba.

• Metallization kuburikidza nekuongorora

Hunhu hwe metallized kuburikidza nemakomba hwakakosha zvakanyanya kune maviri-mativi pcb uye yakawanda-yakaturikidzana pcb. Kukundikana kwakawanda kwemamojuru emagetsi uye kunyangwe iyo michina yese iri nekuda kwehunhu hwemakomba esimbi. Naizvozvo, zvinodikanwa kubhadhara zvakanyanya kutariswa kwemasimbi kuburikidza nemakomba. A. Ndege yesimbi yemukati megomba madziro ichave yakakwana, yakatsetseka uye isina maburi kana madiki madiki nekutarisa metallization inovhara zvinotevera zvinhu.

B. Magetsi zvivakwa zvinofanirwa kutariswa zvichienderana neiyo pfupi uye yakavhurika denderedzwa repad uye metallized kuburikidza nemakomba unhani, uye kuramba pakati pegomba nepakati uye kutungamira.

C. Mushure mekuedzwa kwezvakatipoteredza, kushanduka kwekushanduka kweiyo yekupfuura-gomba hakufanirwe kupfuura 5% kusvika 10%.

D. Mechanical simba zvinoreva simba rekubatanidza pakati pesimbi ine gaba nepad.

E. Metallographic ongororo bvunzo tarisa kupfeka mhando, kupfeka kukora uye kufanana, uye simba rekunamatira pakati pekupfeka nemhangura foil.

Metallization kuburikidza nekuongorora inowanzo kuve musanganiswa wekutarisa kuongorora uye mechiniki kuongorora. Kuongorora kwekuona kunosanganisira kuburitsa pcb kuchiedza uye kuona kuti rakasimba, rakatsetseka nepakati-gomba madziro inoratidza mwenje zvakaenzana. Nekudaro, madziro ane ma nodule kana void haazove akajeka zvakanyanya. Kugadzira vhoriyamu, in-line yekuongorora chishandiso (semuenzaniso, inobhururuka tsono tester) inofanira kushandiswa.

Nekuda kwechimiro chakaomarara chemaPCBS mazhinji, zvakaoma kutsvaga zvikanganiso nekukasira kana matambudziko awanika panguva inotevera yebvunzo yeyuniti yemusangano. Nekuda kweizvozvo, kuongororwa kwehunhu hwayo uye kuvimbika kunofanirwa kuve kwakaomarara. Pamusoro pezvinhu zviri pamusoro apa zvekutarisa zvinhu, zvimwe zvinhu zvekuongorora zvinosanganisirawo ma parameter anotevera: conductor kuramba, metallization kuburikidza nemaburi kuramba, yemukati pfupi wedunhu uye yakavhurika wedunhu, kuputira kuramba pakati pemitsara, kupfekedza simba rekunamatira, adhesion, kupisa kwemagetsi kukanganisa simba, simba razvino, nezvimwe. Chiratidziro chega chega chinofanirwa kuwanikwa kuburikidza nekushandisa michina yakasarudzika uye nzira.