He aha ka ʻokoʻa ma waena o Reflow a me Wave Soldering?

NeoDen IN12

He ahareflow umu?
ʻO ka mīkini hoʻoheheʻe Reflow ka mea e hoʻoheheʻe ai i ka solder paste i uhi mua ʻia ma ka solder pad ma ka hoʻomehana ʻana e ʻike ai i ka pilina uila ma waena o nā pine a i ʻole nā ​​​​hopena welding o nā mea uila i kau mua ʻia ma ka pā solder a me ka solder pad ma ka PCB. e hoʻokō i ke kumu o ka wiliwili ʻana i nā ʻāpana uila ma ka papa PCB.Mīkini wiliwili SMTua hoʻokumu 'ia ma luna o ka hana o ka wela kinoea holo ma ka solder hui, gelatinous flux ma lalo o kekahi kiʻekiʻe kiʻekiʻe ea airflow kino e hoʻokō SMD kuʻihao;Kapa ʻia ʻo "reflow umu", no ka mea, ke kinoea i loko o kamīkini hilikahe kaʻapuni e hana i ka wela kiʻekiʻe i ka welding.Hoʻokaʻawale ʻia ka umu Reflow i loko o ka preheating zone, ka wela wela a me ka ʻāpana hoʻomaha.
He aha ka mīkini hoʻoheheʻe nalu?
E hoʻoheheʻe i ka solder palupalu (lead tin alloy), ma o ka paila uila a i ʻole electromagnetic pump jet kahe i loko o nā koi hoʻolālā o ka nalu solder, i hoʻolako mua ʻia ka papa i paʻi ʻia me nā ʻāpana ma o ka nalu solder, e hoʻokō i ka pilina mechanical a me ka uila. ma waena o nā ʻāpana o ka hopena kuʻihao a i ʻole nā ​​pine a me ka paʻi ʻana i ka papa kuʻihao paʻa palupalu.ʻO ka mīkini hoʻoheheʻe nalu ka mea nui i haku ʻia me ke kāʻei halihali, ka hoʻohui ʻana o ka flux, ka ʻona preheating a me ka umu ahi nalu, ʻo kāna mea nui he solder bar.
He aha ka ʻokoʻa ma waena o ka reflow a me ka nalu ʻana?

1. ʻO ka hoʻoheheʻe hawewe he mea hoʻoheheʻe ʻia e hana i ka nalu solder e wili i nā ʻāpana;ʻO ka umu Reflow ke kūʻai ʻana i nā ʻāpana e ka ea wela e hoʻoheheʻe ana i ka solder hoʻoheheʻe.

2. He okoa ke kaʻina hana: e kāpīpī i ka starch nalu soldering flux, hou ma hope o preheating, welding, cooling zone, reflow soldering, mua loaʻa solder ma ka PCB kapuahi, ma hope o kuʻiʻo ka uhi o solder paste hehee ai kuʻihao, nalu soldering, ka mua hana. ʻaʻole solder ma ka PCB furnace, welding machine o ka solder wave solder coating finish welding to welding welding plate.

3. He kūpono ka umu Reflow no nā ʻāpana uila SMT, kūpono ke kūʻai ʻana i ka nalu no nā ʻāpana uila pin.