Te whakahaere rauemi whakarewa

Hanganga: Sn96.5Ag3.0Cu0.5, ira rewa 217℃. Ngā Painga: 30% te ātete waikura kua whakapaitia, e tutuki ana i ngā tohutohu taiao RoHS, he kaha te pono o te pāmahana teitei, me te pupuri i te kaha miihini neke atu i te 85% i muri i te pakeketanga i te 150℃ mō te 1000 hāora.

Kāore he rohe noho tahi totoka-wai o ngā tūhono eutectic (pērā i te Sn63Pb37) i te wā e rewa ana, ā, he whaiti te matapihi pāmahana tūhono, e hiahia ana kia 50-70℃ teitei ake te pāmahana tihi tūhono whakahoki i te ira rewa; he rohe noho tahi totoka-wai tō ngā tūhono kore-eutectic, e hiahia ana kia tika te whakahaere pāmahana kia kore ai e ranea te tūhono.

Ihirangi paerewa: 1.0%-3.0%. Mēnā he iti rawa te ihirangi, kāore e ranea te tango i ngā kiriata waikura, ka piki ake te tere o ngā hapa mā te 20%-30%; mēnā he nui rawa te ihirangi, ka nui rawa ngā toenga ka pā ki te whakamarumaru, ā, 1.8%-2.2% te nuinga e whakamahia ana i roto i te huihuinga hiko.

Pāmahana: 0-10℃ (i roto i te pikinga ±2℃), haumākū: RH≤60%. Ka piki ake te tere o te panoni matotoru mā te 5%-8% ia rā ina neke ake te pikinga o te pāmahana i te ±2℃, ā, ka tere ake te waikura i te nui o te haumākū.

Ka tere te pirau o ngā wāhanga hohe o te rere (pērā i ngā waikawa waro) ina pāngia e te mārama, ka heke te hohenga mā te 40% i muri i te kotahi marama o te pāngia e te mārama, ā, ka heke noa iho te 10%-15% i roto i te 6 marama o te rokiroki kore mārama.

Ka kore e ōrite te pāmahana o roto i te whakaoho, ka hua ake te whakamaroke wawe, te memeha rānei o te whakarewa. Mēnā he rerekē te matotorutanga ≤5% i muri i te 4-6 hāora o te whakahokinga mai o te pāmahana, ka taea e te whakaoho koretake te rerekētanga tae atu ki te 20%.

Whakarerekētia ia 6 marama kia tika ai te hapa pāmahana ±1℃ me te hapa haumākū ±3%RH, kia kore ai e puta he āhuatanga rokiroki kāore e taea te whakahaere.

Kaua e neke atu i te 8 hāora te whakamahinga tonu i te pāmahana rūma 20-25℃ me te RH≤60%. Ka piki ake te matotoru mā te 30%-50% ina neke atu, ā, ka piki ake te tere o te hapa tā ki te 15%-20%.

Whakatauhia mā te kawenga whakaputa me te nui o te paru whakarewa, whakakapia ia PCB 500-1000㎡ e hangaia ana; whakakapia i mua i te wā ka nui ake te ihirangi parahi i te 0.8%, ki te kore ka piki ake te tere o te hapa mā te 25%-35%.

Ka piki ake te whakapaunga mā te 15%-20% mō ia pikinga 0.1mm o te whānui o te hononga honohono. Ka taea te matapae i te whakamahinga mā te tatau i te rōrahi o te hononga honohono (kiato SAC305 7.4g/cm³).

Pāmahana: 350-380℃, wā: 2-3 hēkona. Ka pakaru ngāwari ngā wāhanga i te neke atu i te 400℃, i te neke atu rānei i te 5 hēkona, ā, i te iti iho i te 350℃ ka kore e ranea te whakapiringa, ā, ka piki pea te tere o te hapa mā te 40%.

Ko te koki tino pai ko te 45°-60°. Mēnā he iti te rahinga tānga i te 60°, ā, ka piki ake te tere o te hapa mā te 8%-10% mō ia pekanga 5°.

Ka taea e te hihi-X te kite i ngā āputaputa me te diameter ≥0.1mm. Paerewa IPC-A-610: horahanga āputaputa ≤25% mō ngā hua akomanga B, ≤15% mō te akomanga C, me ngā āputaputa nui rawa e pā ana ki te marara wera me te kaha.

Ngā Āhuatanga: 25±0.5℃, tere hurihuri 5rpm, whakamātautau mō te 60 hēkona. Te matotoru paerewa SAC305: 80-120Pa·s, me whakarerekē mēnā he nui ake te rerekētanga i te ±15%.

Whakamātauria ki te taputapu whakamātautau kume i te tere 5mm/min. ≥0.5N mō te kete 0603, ≥1.5N mō ngā taura QFP, kāore i te rawaka te kaha, ka pakaru pea i raro i te wiri.

Mātakihia i raro i te karu hiko i muri i te huri me te whakakanapa, me te arotahi ki te matotoru o te paparanga IMC (1-3μm mō te SAC305), ka pakarukaru ngā hononga honohono >5μm, ā, ka whakapotohia te roa o te ora mā te neke atu i te 50%.

Whakamātauria mā te chromatography katote, ko te toenga katote mō ia wāhanga horahanga ≤1.5μg/cm² (i roto i te NaCl ōrite), ka taea e te nui rawa te whakaputa i ngā ara iahiko poto o te hekenga hikohiko.

He tika te tere o te 1-3℃/s. Ka pāngia ngā wāhanga e te ahotea wera >5℃/s, ka roa ake te huringa i te

Whakamahia ngā whakatuwheratanga takahanga me ngā kokonga porowhita i tapahia e te laser. Whakaitihia te whakatuwheratanga QFP 0.3mm pitch mā te 10%-15%, ā, tāpirihia ngā kokonga porowhita 0.05mm, kia whakaitihia ai te tere hinga mai i te 12% ki te 3%-5%.

Ka whakaitihia te waikura e te taiao hauota (te nui o te hāora

Mō ia pikinga 0.5mm o te matotoru o te PCB, whakaitihia te tere whakamatao mā te 1-2℃/s. Mēnā he tere rawa te whakamatao (>5℃/s) mō ngā papa matotoru ka pakaru, ka pāngia te whai huatanga e te puhoi rawa, ā, ka puta he waikura.

Ka nui ake te matotoru, ka puhoi ake te tere tango. Te matotoru teitei (>150Pa·s): 1-2mm/s, te matotoru iti (

He pai ake ngā taputapu e 8, neke atu rānei ngā rohe pāmahana mō ngā papa hiko kiato-teitei, e whakapai ake ana i te reiti tohu mai i te 85% ki te neke atu i te 95% ki te whakaritea ki ngā taputapu e 6-rohe, me te whakahaere pāmahana tika ake.

Mā te tere hurihuri o te 20-40rpm ka puta te ōritetanga pai rawa atu o te wai whakarewa. I muri i te whakamutu i te whakaoho, ka piki ake te rerekētanga pāmahana i waenga i ngā paparanga o runga me raro mā te 3-5℃ ia hāora, me te piki ake o te rerekētanga hanganga me te tere hapa mā te 10%-15%.

Me whakahaere te tika i roto i te ±0.01mg. Mō ngā mōkihi 0201, ko te rerekētanga >±0.02mg ka whakanui ake i te tūponotanga o te ara iahiko poto/te koretake o te whakapiri mā te 40%-50%, ka tino pā ki te hua.

Te taumahatanga o te 0.8-1

Tukanga: Kohikohi whakarōpū → tangohanga whakarewa me te paru → whakatikatika hanganga. Te pāmahana whakarewa 280-320℃, te nui o te tine ≥99.5% i muri i te tangohanga paru. Ārai i te parahanga konganuku taumaha; me whakakore te wai para, me te whakapūtā kia tutuki ai ngā paerewa tukunga GB 8978-1996.

Kei roto ko te waikawa abietic me te isopropanol. Ngā herenga pānga mahi: waikawa abietic 5mg/m³ (toharite taumaha-wā), isopropanol 980mg/m³. Whakakīia ki te hauhautanga whai hua hei ārai i te riri o te manawa me te pūnaha io.

I whakarōpūtia hei HW49 (waehere 900-041-49), me maka atu e ngā wāhanga whai mana, me tutuki i ngā Ture Whakahaere Tuhinga Whakawhiti Para Kino, ā, me tino ārai i te whakaranu ki ngā para o te whare.

E hiahiatia ana te karaehe ātete-pahū Ex dⅡBT4 mō te penapena i ngā rerenga mura. Whakamahia ngā rama/pana ātete-pahū, ā, āraia ngā taputapu whakaputa mura. Mā te kore e tutuki i ngā whakaritenga ka piki ake te mōrearea ahi/pahū mā te 30%-50%.

Penapenahia ki roto i ngā ipu maroke kua hiritia me te matū ārai mate 0.5%-1.0%BHT. Ka piki ake te waikura mā te 50% i roto i ngā hāora 24 ina whakamahia; ka roa ake te wā hangarua mēnā ka hiritia te rokiroki.

Whakaitihia te matotoru mai i te 0.15mm ki te 0.12mm i raro i te whakaritenga kounga, me te whakaiti i te whakamahinga mā te 20%-25%. Mā te arotau DOE ka whakaitihia te utu mō ia PCB mā te 0.3-0.5 RMB.

Te toharite o te ahumahi: 8%-12%. Ngā ine: Te whāngai waea aunoa (te whakaiti i te ngaronga mā te 3-5%), ngā tikanga kua whakapaitia (te whakaiti i te whakapiringa kau mā te 15%-20%), te hangarua waea para (te tere whakaora 70%-80%), ka taea te whakaiti ki te 5%-8%.

Ngā Tohu: Te utu mō ia wae, te nui o te konganuku (+5% te utu mō ia +1%), te tere o te hapa tā (-0.5 RMB/PCB mō ia -1%), te roa o te wā rokiroki (-3% te utu rokiroki mō ia +1 marama), i tatauhia mā te taupū taumaha.

Ngā Ine: Te tiaki hauota (ka whakaiti i te paru mā te 40%-60%), te hinu ārai-waikura (ka whakaiti i te tere waikura mā te 50%-70%), te whakahaere pāmahana ±2℃, ka taea te whakaiti i te paru mai i te 5kg/kete ki te 2-3kg/kete.

Mā te whakapiki i te huringa mai i te 4 ki te 6 ngā wā/tau ka whakaitihia te utu o te noho whakapaipai mā te 33%. Ka whakapai ake i te whai huatanga mā te hoko JIT, te whakapai ake i ngā rawa (te whakaiti 20%-30%), me te whakapoto i te huringa (te whakaiti 15-20 rā).

Arotahi: Te tirotiro i ngā rauemi mata (100% te kapinga), te whakahaere whakaputa (hei tauira, te rerekētanga wā i waenga i te whakaranu i te whakapiri whakarewa ≤5%), te whakamātautau hua kua oti (≥10 ngā taonga mō ia puranga), te whakahaere hua kāore i te tutuki (te wā tika ≥95%).

Ngā tohu aromatawai: Ngā taputapu R&D (DSC, te wātea o te SEM), te ōwehenga kaimahi R&D (≥15%), te maha o ngā patent (≥3 hou i ia tau), te huringa whanaketanga hua hou (te toharite ≤6 marama).

Ōwehenga: 5%-10% o te moni hoko ā-tau. Tangohia te reiti hapa puranga >3%, whakahokia mai i muri i ngā puranga 合格 e toru karapīpiti hei whakatenatena i te whakahaere kounga.

Kei roto: Te hanganga o te koranu (hei tauira, te manawanui SAC305 Sn±0.5%, Ag±0.2%, Cu±0.1%), te ira rewa (217℃±3℃), te matotoru (50-150Pa·s±10%), te taumata mahi (hei tauira, te halide karaehe RA ≤0.5%), ngā whakaritenga taiao (RoHS 2.0), me ētahi atu.

Ngā tuhinga pūnaha: Tau puranga, rā whakaputa, hanganga, wā putunga, me ētahi atu, e hono ana ki ngā tohu motuhake PCBA. Kua whakaitihia te wā tauwāhi raruraru mai i te 24 ki te ≤2 hāora.

Ngā Tohu: Te hurihanga o ngā taonga (taumata tino pai 8-10 ngā wā/tau), te roa mai i te kohikohinga ki te raina (≤1 hāora), te ōwehenga wā kore mahi nā ngā take whakahaere (