Nā kūlana kūpono nokūʻai PCBnā papa kaapuni
1. Pono ka weldment i ka weldability maikaʻi
ʻO ka mea i kapa ʻia ʻo solderability e pili ana i ka hana ʻana o ka mea hao e hoʻopili ʻia ai ka mea metala a hiki i ka solder ke hana i kahi hui maikaʻi i ka mahana kūpono. ʻAʻole maikaʻi nā metala a pau. ʻO kekahi mau metala, e like me chromium, molybdenum, tungsten, a me nā mea ʻē aʻe, he maikaʻi loa ka weldability; ʻO kekahi mau metala, e like me ke keleawe, ke keleawe, a me nā mea ʻē aʻe, ʻoi aku ka maikaʻi o ka weldability. I ka wā wili, ʻo ka wela kiʻekiʻe e hana i kahi kiʻiʻoniʻoni oxide ma luna o ka ʻili metala, e pili ana i ka weldability o ka mea. I mea e hoʻomaikaʻi ai i ka solderability, hiki ke hoʻohana ʻia ka hoʻoheheʻe ʻana o ka ʻili o ka ʻili, ka plating kālā a me nā mea ʻē aʻe.
2. Pono e hoʻomaʻemaʻe ʻia ka ʻili o ka weldment
I mea e hoʻokō ai i kahi hui maikaʻi o ka solder a me ka weldment, pono e mālama ʻia ka maʻemaʻe o ka welding. ʻOiai no nā weld me ka weldability maikaʻi, hiki ke hana ʻia nā kiʻiʻoniʻoni oxide a me nā ʻaila ʻaila e pōʻino ai i ka pulu ma ka ʻili o ka weldment ma muli o ka mālama ʻana a i ʻole ka haumia. Pono e wehe ʻia ke kiʻi lepo ma mua o ke kuʻi ʻana, inā ʻaʻole hiki ke hōʻoia i ka maikaʻi o ka welding. Hiki ke hoʻoneʻe ʻia nā ʻāpana oxide ma luna o nā ʻili metala e ka flux. Pono e hoʻoneʻe ʻia nā ʻili metala me ka oxidation koʻikoʻi e nā ʻano mīkini a i ʻole kemika, e like me ke ʻoki ʻana a i ʻole pickling.
3.E hoʻohana i ke kahe kūpono
ʻO ka hana o ka flux ka wehe ʻana i ke kiʻi oxide ma ka ʻili o ka weldment. Pono nā kaʻina hana hoʻoheheʻe like ʻole, e like me ka nickel-chromium alloy, stainless steel, aluminika a me nā mea ʻē aʻe. He paʻakikī ke kūʻai aku me ka ʻole o kahi flux kūikawā i hoʻolaʻa ʻia. I ka wā e wiliwili ai i nā huahana uila pololei e like me nā papa kaapuni i paʻi ʻia, i mea e paʻa pono ai ka wiliwili, hoʻohana pinepine ʻia ka flux-based flux. ʻO ka maʻamau, hoʻohana ʻia ka waiʻona e hoʻoheheʻe i ka rosin i ka wai rosin.
4. Pono e wela ka weldment i ka mahana kūpono
I ka wā wili, ʻo ka hana o ka ikehu wela ka hoʻoheheʻe ʻana i ka solder a me ka wela i ka mea kuʻi, i loaʻa i ka tin a me ke alakaʻi nā mana e lawa ai ka ikehu e komo i loko o ka lattice aniani ma ka ʻili o ka metala e hoʻopili ʻia e hana i kahi huila. Inā haʻahaʻa loa ka wela welding, e hōʻino ia i ke komo ʻana o nā atoms solder, ʻaʻole hiki ke hana i kahi alloy, a maʻalahi ke hana i kahi solder wahaheʻe. Inā kiʻekiʻe loa ka mahana welding, e noho ka mea kūʻai aku i kahi kūlana non-eutectic, e wikiwiki ana i ka decomposition a me ka volatilization rate o ka flux, e hōʻemi ana i ka maikaʻi o ka mea kūʻai aku, a i nā hihia koʻikoʻi, hiki ke hana i nā pads ma ka paʻi. papa kaapuni e haule. ʻO ka mea e pono ai ke koʻikoʻi, ʻaʻole pono e hoʻomehana ʻia ka solder e hoʻoheheʻe, akā pono pū ka weldment i ka wela e hiki ke hoʻoheheʻe i ka solder.
5. kūpono kuʻihao manawa
ʻO ka manawa welding e pili ana i ka manawa i koi ʻia no nā hoʻololi kino a me nā kemika i ka wā o ke kaʻina hana wili. Loaʻa i ka manawa e welded ai ka metala a hiki i ka wela wili, ka manawa hoʻoheheʻe o ka solder, ka manawa e hana ai ka flux a me ka manawa e hoʻokumu ʻia ai ka mea hao. Ma hope o ka hoʻoholo ʻana i ka mahana welding, pono e hoʻoholo ʻia ka manawa wili kūpono e pili ana i ke ʻano, ke ʻano, a me nā ʻano o nā ʻāpana e welded. Inā lōʻihi ka manawa kuʻi, e pōʻino maʻalahi nā ʻāpana a i ʻole nā ʻāpana wili; inā pōkole ka manawa kuʻi, ʻaʻole e hoʻokō ʻia nā koi kuʻi. ʻO ka mea maʻamau, ʻaʻole ʻoi aku ka nui o ka manawa no kēlā me kēia hui solder ma mua o 5 kekona.
