Nā kumu no ka hāʻule ʻana o ka aila ʻōmaʻomaʻo i ka kuʻihao pale o ka papa kaapuni a he aha nā pilikia e hopena ʻia e ka aila ʻōmaʻomaʻo mānoanoa

ʻO ka maʻamau, ʻike mākou i kahi kiʻi ʻoniʻoma ʻōmaʻomaʻo ma ka ʻili o ka papa ʻapuni. I ka ʻoiaʻiʻo, ʻo kēia ka papa kaapuni solder resist ink. Paʻi ʻia ia ma ka PCB i mea e pale aku ai i ka hoʻopili ʻana, no laila ua kapa ʻia ia he solder resist ink. ʻO ka PCB solder resistable inks he ʻōmaʻomaʻo, uliuli, keʻokeʻo, ʻeleʻele, melemele a me ka ʻulaʻula, a me nā ʻano kala ʻē aʻe ʻē aʻe. Hiki i kēia papa o ka inika ke uhi i nā alakaʻi i manaʻo ʻole ʻia ma mua o nā pads, e hōʻalo i ka hoʻopili pōkole ʻana a hoʻolōʻihi i ke ola lawelawe o PCB i ke kaʻina hana. Kāhea ʻia ia he welding welding a anti anti welding; Eia nō naʻe, i ka wā o ka hana ʻana o PCB, nui nā pilikia i kēlā me kēia manawa, a ʻo kekahi o nā pilikia maʻamau ka hulu o ka solder e kūʻē i ka aila ʻōmaʻomaʻo ma ka papa kaapuni. He aha ke kumu o ke kulu o ka ʻīnika ma ka papa kaapuni?

ʻEkolu mau kumu nui o ka hāʻule ʻana o ka aila ʻōmaʻomaʻo no ka pale ʻana i ka papa kaapuni.

ʻO kekahi ke paʻi ʻana i ka inika ma PCB, ʻaʻole hana ʻia ka pretreatment ma kahi. ʻO kahi laʻana, aia nā stains, lepo a i ʻole impurities ma ka ʻili o PCB, a i ʻole nā ​​wahi i oxidized. ʻO ka ʻoiaʻiʻo, ʻo ke ala maʻalahi e hoʻonā i kēia pilikia e hana hou i ka pretreatment, akā e hoʻāʻo e hoʻomaʻemaʻe i nā stains, nā impurities a i ʻole ka oxide layer ma luna o PCB;

ʻO ke kumu ʻelua no ka mea paha i hoʻomoʻa ʻia ka papa kaapuni i ka umu no ka manawa pōkole a ʻaʻole lawa paha ka mahana, no ka mea, pono e hoʻomoʻa i ka papa kaapuni i ke kiʻekiʻe wela ma hope o ka paʻi ʻana i ka inika thermosetting. Inā ʻaʻole lawa ka mahana o ka hoʻomoʻa ʻana a i ʻole ka manawa, lawa ʻole ka ikaika o ka inika ma ka papa, a ʻo ka hope e hāʻule ka pale solder o ka papa kaapuni.

ʻO ke kumu ʻekolu ka pilikia maikaʻi o ka inika a i ʻole ka pau ʻana o ka inika. ʻO kēia mau kumu ʻelua e hāʻule ai ka ʻīnika ma ka papa kaapuni. E hoʻonā i kēia pilikia, hiki iā mākou ke pani wale i ka mea hoʻolako inika.

ʻAʻole hōʻike ka hae IPC o ka ʻoihana kaapuni i ka mānoanoa o ka aila ʻōmaʻomaʻo iā ia iho. ʻO ka maʻamau, ka mānoanoa o ka aila ʻōmaʻomaʻo ma ka ʻili laina ma 10-35um; Inā mānoanoa ka aila ʻōmaʻomaʻo a ʻoi aku ke kiʻekiʻe ma mua o ka pad, aia ʻelua mau mea huna e hūnā ʻia.

ʻO kekahi o ka mānoanoa o ka pā i ka hae. ʻO ka mānoanoa o ka mānoanoa aila ʻōmaʻomaʻo e alakaʻi i ka pā mānoanoa o ka manoanoa, kahi paʻakikī e hoʻouka a i ʻole hiki ʻole ke hoʻohana ʻia;

ʻO ka lua, ʻokiʻoki ʻia ka hao kila e ka ʻaila ʻōmaʻomaʻo i ka wā o SMT, a ʻo ka mānoanoa o ka paʻi hoʻoheheʻe i paʻi ʻia ma ka papa he puʻupuʻu ia e ka puʻupuʻu, kahi maʻalahi e hana i ke kaapuni pōkole ma waena o nā pin ma hope o ka hoʻoheheʻe ʻana.