Kodi reflow oven ndi chiyani?

Reflow uvunindi imodzi mwazinthu zitatu zazikuluzikulu pakukweza kwa SMT.Amagwiritsidwa ntchito makamaka kugulitsa gulu lachigawo la zigawo zomwe zakwera.Phala la solder limasungunuka ndi kutentha kotero kuti chigamba ndi bolodi la solder pad zimasakanikirana pamodzi.Kuti amvetsemakina opangira zitsulo, muyenera kumvetsetsa kachitidwe ka SMT kaye.

NeoDen reflow uvuni IN12

The solder phala ndi osakaniza zitsulo malata ufa, flux ndi mankhwala ena, koma malata mmenemo alipo paokha ngati mikanda yaing'ono.Pamene bolodi PCB kudzera m'madera angapo kutentha mu ng'anjo reflow, pamwamba 217 digiri Celsius, yaing'ono malata mikanda kusungunuka.Pambuyo pa kusinthasintha ndi zinthu zina, kotero kuti tinthu tating'onoting'ono tambirimbiri tisungunuke pamodzi, kutanthauza kuti tinthu tating'onoting'ono tibwerere kumadzimadzi akuyenda, njirayi imatchedwa reflux.Reflux amatanthauza kuti malata ufa kuchokera kale olimba kubwerera boma madzi, ndiyeno kuchokera kumadera ozizira kubwerera olimba boma kachiwiri.

Chiyambi cha njira ya reflow soldering
Zosiyanamakina opangira zitsuloali ndi ubwino wosiyana, ndipo ndondomekoyi ndi yosiyana.
Infuraredi reflow soldering: mkulu ma radiation conduction kutentha kwachangu, kutentha kwambiri kutsetsereka, kosavuta kuwongolera kutentha kokhotakhota, PCB kumtunda ndi kutsika kutentha ndikosavuta kuwongolera mukawotcherera mbali ziwiri.Ndi mthunzi kwenikweni, kutentha si yunifolomu, zosavuta chifukwa zigawo zikuluzikulu kapena PCB m'deralo kuwotcha.
Kuwotchera kwa mpweya wotentha: kutentha kwa yunifolomu ya convection, mtundu wabwino wowotcherera.Kutentha kwa kutentha kumakhala kovuta kulamulira.
Kuwotcherera kwa mpweya wotentha wokakamizidwa kumagawidwa m'magulu awiri malinga ndi mphamvu yake yopanga:

Kutentha zone zida: kupanga misa ndi oyenera kupanga misa ya bolodi PCB anaika pa lamba woyenda, kudutsa angapo yokhazikika kutentha zone kuti, pang'ono kutentha zone adzakhalapo kutentha kulumpha chodabwitsa, si koyenera mkulu-kachulukidwe msonkhano. kuwotcherera mbale.Komanso ndi yochuluka ndipo imadya magetsi ambiri.
Kutentha zone yaing'ono zipangizo kompyuta kompyuta: ang'onoang'ono ndi sing'anga-kakulidwe mtanda kupanga kafukufuku mofulumira ndi chitukuko mu malo okhazikika, kutentha molingana ndi mikhalidwe kusintha ndi nthawi, zosavuta ntchito.Kukonza zida zapamtunda zosokonekera (makamaka zazikulu) sizoyenera kupanga zambiri.