I. Usoro iji gbanwee esemokwu elu na viscosity
Viscosity na elu esemokwu bụ ihe dị mkpa Njirimara nke solder.Magburu onwe solder kwesịrị inwe ala viscosity na elu esemokwu mgbe agbaze.Esemokwu dị n'elu bụ ọdịdị nke ihe onwunwe, enweghị ike ikpochapụ, ma enwere ike gbanwee.
1.The isi jikoro iji belata elu erughị ala na viscosity na PCBA soldering bụ ndị a.
Mee ka okpomọkụ dịkwuo elu.Ịkwalite ọnọdụ okpomọkụ nwere ike ime ka ịdị anya molekụla dị n'ime ebe a wụrụ awụ wee belata ike ndọda nke ụmụ irighiri ihe dị n'ime ihe na-ere mmiri n'elu ụmụ irighiri ihe dị n'elu.Ya mere, iwelie okpomọkụ nwere ike ibelata viscosity na elu esemokwu.
2. Mgbochi elu nke Sn dị elu, na mgbakwunye nke Pb nwere ike ibelata esemokwu elu.Dịkwuo ọdịnaya nke lead na Sn-Pb solder.Mgbe ọdịnaya nke Pb ruru 37%, esemokwu elu na-ebelata.
3. Ịgbakwunye onye na-arụ ọrụ.Nke a nwere ike belata esemokwu elu nke ihe na-ere ahịa nke ọma, ma wepụkwa oyi akwa oxide elu nke ihe na-ere ahịa.
Iji nitrogen nchebe pcba ịgbado ọkụ ma ọ bụ agụụ ịgbado ọkụ nwere ike ibelata elu-okpomọkụ ọxịdashọn na melite wettability.
II.ọrụ nke elu esemokwu na ịgbado ọkụ
Esemokwu dị n'elu na ike wetting n'akụkụ nke ọzọ, ya mere esemokwu elu bụ otu n'ime ihe ndị na-adịghị akwado wet.
Mareflowoven, ire ereigwema ọ bụ ntuziaka soldering, elu esemokwu n'ihi na e guzobere ezi solder nkwonkwo bụ adịghị mma ihe.Otú ọ dị, na SMT ntinye usoro reflow soldering elu esemokwu enwere ike iji ọzọ.
Mgbe solder tapawa rute na-agbaze okpomọkụ, n'okpuru omume nke guzozie eguzozie n'elu esemokwu, ga-emepụta a onwe-n'ọnọdu mmetụta (Self Alignment), ya bụ, mgbe akụrụngwa ọnyịnye ọnọdụ nwere obere deviation, n'okpuru omume nke elu erughị ala. enwere ike iweghachite akụrụngwa ahụ na-akpaghị aka na ọnọdụ ebumnuche dị nso.
Ya mere, elu esemokwu na-eme ka re-eruba usoro n'ịkwalite nkenke chọrọ dịtụ rụrụ, dịtụ mfe ịghọta na elu akpaaka na elu na-agba.
N'otu oge ahụ bụkwa n'ihi na "re-erugharị" na "onwe-ebe mmetụta" e ji mara, SMT re-flow soldering usoro ihe mpe mpe akwa imewe, akụrụngwa standardization na na nwere ihe siri ike arịrịọ.
Ọ bụrụ na elu erughị ala na-adịghị guzozie eguzozie, ọbụna ma ọ bụrụ na ọnyịnye ọnọdụ bụ nnọọ ezi, mgbe ịgbado ọkụ ga-egosikwa akụrụngwa ọnọdụ dechapụ, guzo ihe ncheta, bridgeing na ndị ọzọ ịgbado ọkụ ntụpọ.
Mgbe ebili mmiri na-ere ahịa, n'ihi nha na ịdị elu nke akụkụ ahụ SMC / SMD n'onwe ya, ma ọ bụ n'ihi akụkụ dị elu na-egbochi akụkụ dị mkpụmkpụ na igbochi ebili mmiri tin na-abịa, yana mmetụta ndò nke oke ebili mmiri nke agba agba. eruba, Liquid solder enweghị ike infiltrated n'ime azụ nke akụrụngwa ahu na-etolite a eruba igbochi ebe, dapụtara na ntapu nke solder.
Atụmatụ nkeNeoDen IN6 Igwe na-ere ere reflow
NeoDen IN6 na-enye nkwụghachi ụgwọ dị mma maka ndị na-emepụta PCB.
Nhazi tebụl nke ngwaahịa na-eme ka ọ bụrụ ngwọta zuru oke maka ahịrị mmepụta na ihe dịgasị iche iche chọrọ.Emebere ya na akpaaka ime nke na-enyere ndị na-ahụ maka ọrụ aka inye ihe nrịbama dị larịị.
Ụdị ọhụrụ ahụ agafewo mkpa maka ikpo ọkụ tubular, nke na-enye ọbụna nkesa okpomọkụofụri oven reflow.Site na ire PCB na ọbụna convection, ihe niile na-ekpo ọkụ n'otu ọnụego.
Nhazi ahụ na-arụ ọrụ aluminum alloy efere ọkụ nke na-eme ka ike-arụ ọrụ nke usoro ahụ dịkwuo elu.Sistemụ nchacha anwụrụ ọkụ dị n'ime na-eme ka arụmọrụ ngwaahịa ahụ dịkwuo mma ma na-ebelata mmepụta ihe na-emerụ ahụ, kwa.
A na-echekwa faịlụ na-arụ ọrụ n'ime oven, ma ụdị Celsius na Fahrenheit dị maka ndị ọrụ.Igwe ọkụ na-eji isi iyi ike 110/220V AC ma nwee nnukwu ibu nke 57kg.
Ejiri ụlọ kpo oku aluminom rụọ NeoDen IN6.
Oge nzipu: Sep-16-2022