A preface.

ʻAʻohe keleawe i ka lua kahi pilikia hana o PCB. Me ka hoʻomohala ʻana o ka ʻepekema a me ka ʻenehana, koi ʻia ka PCB miomio (hiʻohiʻona hiʻohiʻona) e ʻoi aku ke kiʻekiʻe a kiʻekiʻe, ʻaʻole ia e lawe wale i ka pilikia i nā mea hana PCB (contradict ma waena o ke kumukūʻai a me ka maikaʻi), akā waiho pū kekahi i nā pilikia huna hūnā ʻia i nā mea kūʻai aku i lalo. Hana i ka hōʻuluʻulu maʻalahi ma kēia wahi ma lalo, lana ka manaʻo e loaʻa ka hoʻomālamalama a kōkua i ka hoa pili.

2. Ka nānā ʻana i ke kiʻikuhi Fishbone

Simple analysis of PCB hole copper and improvement methods

Classification and characteristics of copper – free holes

1. ʻAʻohe keleawe i ka lua PTH: like a maʻamau ka papa uila o ka papa keleawe luna. Hoʻolahalaha like ʻia ka papa uila o ka pā i ka lua mai ka orifice a i ka haki, a uhi ʻia ka haki e ka papa uila ma hope o ke kaha kiʻi ʻana.

Simple analysis of PCB hole copper and improvement methods

2. Pā keleawe keleawe lahilahi lua ʻole ke keleawe:

(1) ʻO ka pā keleawe āpau ka lahilahi me ka ʻole o ke keleawe – keleawe ākea a me ka pā keleawe papa lahilahi lahilahi, ma hope o ke kiʻi uila uila o ka micro etching hole ma waenakonu o ka hapa nui o ka pā keleawe i haki ʻia, ma hope o ka papa uila uila ua hoʻopili ʻia;

(2) ʻaʻohe keleawe i ka lua lahilahi o ka ipu keleawe i ka lua – kūlike a maʻamau ka papa uila o ka pā keleawe, a ke emi nei ka papa uila o ka pā ma ka lua mai ka lua a ka haki. a aia ka haki ma waena o ka lua, a waiho ka pae keleawe i ka haki

Loaʻa ka homogeneity a me ka symmetry maikaʻi o ka ʻaoʻao ʻākau, a ua uhi ʻia ka haki moʻomanaʻo e ka papa graph.

Simple analysis of PCB hole copper and improvement methods

3. Hoʻoponopono i nā puka pōʻino:

(1) hana hewa ke keleawe – ka papa ʻaina keleawe papa uila he mea like a maʻamau, ʻaʻohe kūpana o ka papa keleawe keleawe, ʻaʻole kūpono ka haki, ʻike ʻia i ka waha o ka lua e ʻike ʻia ai ma ka waena o ka lua. , i ka paia o ka puka e ʻike pinepine ʻia ka hewa convex a me nā mea ʻino ʻē aʻe, kiʻi uila ma hope o ka uhi ʻia o ka haki e ka papa uila uila.

(2) mālama i ka hoʻohaunaele o ka lua, ka papa ʻaina keleawe papa uila he mea like a maʻamau, ʻo ka pā keleawe papa uila ʻaʻohe o ka lepe, ʻaʻole kūpono ka haki, ʻike ʻia paha i ka orifice i waenakonu o ka lua. , i ka paia o ka puka e ʻike pinepine ʻia ka hewa convex a me nā mea ʻino ʻē aʻe, ʻaʻole i wahī ke kaha kiʻi haʻihaʻi i ka papa uila.

Simple analysis of PCB hole copper and improvement methods

4. ʻAʻohe puka keleawe keleawe: ma hope o ke kaha kiʻi ʻana, aia nā mea maopopo i paʻa i ka lua, haki ʻia ka hapa nui o ka paia o ka lua, ʻaʻole uhi ʻia ka papa uila uila i ka haki e ka papa uila uila.

Simple analysis of PCB hole copper and improvement methods

5. ʻO ka lua uila me ka ʻole o ke keleawe: ʻaʻole i wahī ʻia ka papa uila i ka haki i ka papa uila – e like ka papa uila a me ka mānoanoa o ka papa uila, ua haki ka haki; Hōʻike ka papa uila uila i kahi leʻaleʻa a hiki i kona nalo ʻana, a hoʻomau ka hoʻonui ʻana o ka papa uila i kahi mamao ma waho o ka papa uila uila a laila hoʻokaʻawale.

Simple analysis of PCB hole copper and improvement methods

Simple analysis of PCB hole copper and improvement methods

Iv. Kuhikuhi Hoʻonui:

1. Ka hana (nā papa luna a me lalo, hoʻonohonoho hoʻonohonoho, mālama, mālama ʻana i nā mea maʻamau);

2. Nā pono hana (manuʻū, mea hānai, peni hoʻomehana, haʻalulu, pauma ʻea, pōʻaiapuni kānana);

3. Nā Pono (papa, potion);

4. Nā kiʻina hana (nā palena, nā kaʻina hana, nā kaʻina hana a me ka kaohi maikaʻi);

5. Ke kaiapuni (ka hoʻololi i hoʻokumu ʻia e ka lepo, maʻalā a me nā mea like ʻole).

6. Ana (hōʻike lāʻau lapaʻau wai, nānā pono keleawe).