Menene reflow oven?

Maimaita tandayana ɗaya daga cikin manyan matakai guda uku a cikin tsarin hawan SMT.Ana amfani da shi ne don siyar da allon kewayawa na abubuwan da aka ɗora.Ana narkar da man siyar ta hanyar dumama ta yadda za'a haɗa nau'in patch da kushin da'ira.Don fahimtareflow soldering inji, Dole ne ku fara fahimtar tsarin SMT.

NeoDen tanda ya sake kwarara IN12

The solder manna shi ne cakude na karfe farantin foda, flux da sauran sinadarai, amma da tin a cikinsa ya wanzu da kansa a matsayin kananan beads.Lokacin da kwamitin PCB ta yankuna da yawa na zafin jiki a cikin tanderun da ke sake fitarwa, sama da digiri 217 ma'aunin ma'aunin celcius, ƙananan kwano na narke.Bayan jujjuyawar da sauran abubuwa suka karu, ta yadda ’yan kananan barbashi marasa adadi suka narke tare, wato su mayar da wadancan kananan barbashi zuwa yanayin ruwan ruwa, wannan tsari sau da yawa ana cewa reflux ne.Reflux yana nufin cewa gwangwani foda daga tsohon m baya zuwa ruwa jihar, sa'an nan kuma daga sanyaya yankin mayar da m jihar sake.

Gabatarwa zuwa hanyar sake kwarara hanyar siyarwa
Daban-dabanreflow soldering injiyana da fa'idodi daban-daban, kuma tsarin kuma ya bambanta.
Infrared reflow soldering: high radiation conduction zafi yadda ya dace, high zafin jiki steepness, sauki sarrafa zafin jiki kwana, PCB babba da ƙananan zafin jiki ne mai sauki sarrafa lokacin da biyu-gefe waldi.Yi tasirin inuwa, zafin jiki ba iri ɗaya ba ne, mai sauƙin haifar da abubuwa ko ƙonewar gida na PCB.
Hot iska reflow soldering: uniform convection conduction zafin jiki, mai kyau waldi ingancin.Yanayin zafin jiki yana da wuyar sarrafawa.
An kasu walda tilas mai zafi da iska mai zafi zuwa nau'i biyu bisa ga iyawarsa:

Zazzabi yankin kayan aiki: taro samar ya dace da taro samar da PCB hukumar sanya a kan tafiya bel, don tafiya ta hanyar da dama ajali zafin jiki yankin domin, ma kadan zazzabi yankin zai wanzu zazzabi tsalle sabon abu, bai dace da high-yawa taro taro. farantin walda.Hakanan yana da girma kuma yana cinye wutar lantarki da yawa.
Yankunan zafin jiki ƙananan kayan aikin tebur: ƙanana da matsakaicin matsakaici suna samar da bincike mai sauri da haɓakawa a cikin tsayayyen sarari, zafin jiki bisa ga yanayin da aka saita yana canzawa tare da lokaci, mai sauƙin aiki.Gyara abubuwan da ke da lahani (musamman manyan abubuwa) bai dace da samarwa da yawa ba.