Papa kaapuni paʻi (PCB) hiki ke mahele ʻia i PCB paʻakikī a PCB maʻalahi, hiki ke hoʻokaʻawale ʻia ka mea mua i ʻekolu mau ʻano: PCB ʻaoʻao hoʻokahi, PCB ʻaoʻao ʻelua a me PCB multi-layer. According to the quality grade, PCB can be divided into three quality grades: 1, 2 and 3, of which 3 is the highest requirement. ʻO nā ʻokoʻa i nā pae maikaʻi PCB e alakaʻi i ka paʻakikī a me nā ʻokoʻa i ka hoʻāʻo ʻana a me nā ʻano loiloi.

I kēia lā, ua noho paʻa ʻo PCBS pālua ʻāwīwī a ʻāpana nunui i kahi nui o nā noi i nā uila, me ka PCBS maʻalahi i kekahi manawa i hoʻohana ʻia i kekahi mau hihia. No laila, e kālele ana kēia pepa i ka nānā pono ʻana o ka PCB pālua paʻa a me ka multi-layer PCB. Ma hope o ka hana ʻana o PCB, pono e nānā e ʻike inā kū ka maikaʻi i nā koina hoʻolālā. It can be said that quality inspection is an important guarantee to ensure the quality of products and the smooth implementation of subsequent procedures.

Hae loiloi

ʻO nā kūlana nānā PCB ka nui o nā ʻano:

H. Nā kūlana i hoʻonohonoho ʻia e kēlā me kēia ʻāina;

B. Nā kūlana koa no kēlā me kēia ʻāina;

C. Nā kūlana hana, e like me SJ / T10309;

D. PCB nānā kuhikuhi i hoʻolālā ʻia e ka mea hoʻolako pono;

E. Koi ʻia nā koi ʻenehana ma ke kiʻi kiʻi PCB.

No ka PCBS i ʻike ʻia he koʻikoʻi i ka lakohana, pono e nānā ʻia kēia mau ʻaoʻao koʻikoʻi a me nā mea hōʻailona mai ke poʻo a ka wāwae i ka hoʻohui o ka nānā maʻamau.

Nā mea nānā

Nānā ʻole i ke ʻano o PCB, pono lākou e hele ma waena o nā ʻano loiloi e like me nā ʻano a me nā papahana. 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.

• Nānā helehelena

Maʻalahi ka nānā ʻana i ka ʻike me ke kōkua o kahi lula, vernier caliper, a i ʻole ke aniani hoʻonui. ʻO nā mea i kaha ʻia:

H. Ka mānoanoa, ka ʻino o ka papa a me ka maʻawe o ka pā.

B. Nā helehelena a me nā anaina, ʻoi aku ka nui o ka hui me nā mea uila a me nā alakaʻi alakaʻi.

C. Ka pololei a me ka mōakāka o ke ʻano conductive, a inā paha he alahaka pōkole nā ​​alahaka, nā kaapuni ākea, nā burrs a i ʻole nā ​​āpau.

D. ʻO ke ʻano o ka ʻilikai, inā he mau lua, nā ʻalā a i ʻole nā ​​pinholes ma nā kaula i paʻi ʻia a i ʻole nā ​​pale.

E. Kahi o nā puka pad a me nā lua ʻē aʻe. E hōʻoia inā e nalowale a wili hewa ʻole paha nā puka, inā kū ke anawaena o nā puka i nā koina hoʻolālā a inā he nodule a me nā āpau.

F. ʻO ke kūlana a me ke kūpaʻa o ka pale pale, ʻeleʻele, ʻōlinolino a me ka ʻole o nā kīnā i hāpai ʻia.

G. Ka maikaʻi ka uhi ʻana. Electroplating flux is uniform, firm, position is correct, flux is uniform, its color is in line with relevant requirements.

H. ʻO ke ʻano o ke ʻano, e like me ke kūpaʻa, maʻemaʻe a maʻemaʻe hoʻi, me ka ʻole o nā ʻoka, nā punctures a i ʻole nā ​​haki.

• Nānā i ka hana uila

There are two types of tests under this type of check:

A. Hōʻike hana pilina. 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. No kēia hoʻāʻo, e hāʻawi ka mea hana PCB i kahi nānā maʻamau o kēlā me kēia PCB prefabricated ma mua o ka haʻalele ʻana i ka hale waihona e hōʻoia i ka hoʻokō ʻia o kāna mau hana maʻamau.

B. Hoʻokolohua hana hoʻāloha. Hoʻonohonoho ʻia kēia hōʻike e nānā i ke kūpaʻa pale ma ka mokulele hoʻokahi a i ʻole ma waena o nā mokulele ʻokoʻa e hōʻoia i ka hana pilikino o ka PCB.

• Nānā ʻike loea

Uhi ka ʻike loea nui i ka solderability a me ka uhi adhesion uhi. No ka mea ma mua, e nānā i ka hiki ʻole o ka mea hoʻoheheʻe i ke ʻano conductive. No ka mea hope loa, hiki ke nānā ʻia e nā ʻōlelo aʻoaʻo kūpono i hoʻopili mua ʻia i ka papa plating e nānā ʻia ai a laila hiki ke lawe koke ʻia ʻoiai ma hope o ke kaomi ʻana. A laila, e nānā pono ʻia ka mokulele plating e hōʻoia i ka ʻike ʻana o ka peeling. Eia hou, hiki ke koho ʻia i kekahi mau ʻano nānā e like me ke kūlana maoli, e like me ka hāʻule ʻana o ka pahu keleawe a me ka metallization ma o ka ikaika.

• Metallization ma o ka nānā ʻana

ʻO ka maikaʻi o ka metallized ma o nā lua he mea nui ia no PCB ʻaoʻao ʻelua a me PCB multi-layer. ʻO nā hemahema he nui o nā modula uila a ʻoiai nā pono āpau e pili ana i ka maikaʻi o nā lua metallized. No laila, pono e nānā hou i ka nānā ʻana o nā metallized ma o nā lua. H. ʻO ka mokulele metala o ka paia puka ma o ka puka e piha, laumania a manuahi ʻole o nā lua a i ʻole nā ​​nodule liʻiliʻi e ka nānā ʻana i ka metallization e uhi ana i nā ʻano aʻe.

B. Pono e nānā pono i nā pono uila e like me ka pōkole a me ka puni o ka pale a metallized ma o ka uhi ʻana o ka puka, a me ke kūʻē ma waena o ka puka ma a me ke kēpau.

C. Ma hope o ka hoʻowalewale hoʻokolohua, ʻaʻole e ʻoi aku ka nui o ka loli o ka puka ma o 5% a 10%.

D. ʻO ka ikaika mechanical e pili ana i ka paʻa paʻa ma waena o ka lua metallized a me ka pad.

E. ʻO nā hoʻokolohua loiloi Metallographic e nānā i ka maikaʻi o ka uhi ʻana, ka mānoanoa a me ka like, a me ka ikaika o ka hoʻopili ma waena o ka uhi a me ka pepa keleawe.

ʻO ka metallization ma o ka nānā ʻana he maʻa mau o ka nānā ʻike a me ka nānā ʻana mechanical. ʻO ka nānā ʻana i ka nānā ʻana e pili ana i ka hōʻike ʻana i ka PCB i ka mālamalama a me ka ʻike ʻana inā pili pono ka pā a maikaʻi ʻole o ka paia. Eia nō naʻe, ʻaʻole e mālamalama nā paia i loaʻa nā nodule a i ʻole nā ​​hakahaka. No ka hana ʻana i ka leo, pono e hoʻohana i kahi mea nānā laina laina (e laʻa me kahi mea hoʻāʻo nīele lele).

Ma muli o ke ʻano paʻakikī o PCBS multi-layer, paʻakikī e ʻimi koke i nā hewa ke loaʻa nā pilikia i ka wā o ka hoʻāʻo ʻana o ka hui anakahi. ʻO ka hopena, pono e nānā koʻikoʻi i kona maikaʻi a hilinaʻi hoʻi. Ma waho aʻe o nā mea e nānā ai i nā hana maʻamau, ʻo nā mea nānā ʻē aʻe kekahi i kēia mau palena: resistor conductor, metallization ma o ka hole resistence, loko pōkole circuit a me ka open circuit, insulate resistence ma waena o nā laina, ka uhi adhesion ikaika, adhesion, thermal hopena resistence, mechanical. hopena hopena ikaika, ikaika o kēia manawa, etc. Pono e loaʻa i kēlā me kēia anakuhi ma o ka hoʻohana ʻana i nā pono hana a me nā ʻano hana.