Pali ma motors angapo a reflow soldering, ntchito zawo ndi ziti?Kodi pali madera angati otentha, ndipo kutentha kwake ndi kotani?

Kodi reflow soldering ndi chiyani?

Reflow soldering imatanthawuza kugwiritsa ntchito solder phala kulumikiza chimodzi kapena zingapo zamagetsi zamagetsi kuzinthu zolumikizirana, ndikusungunula solder kudzera pakutenthetsa koyendetsedwa kuti mukwaniritse kulumikizana kosatha.Njira zosiyanasiyana zotenthetsera monga mauvuni otulukanso, nyali zoyatsira infrared, kapena mfuti zotenthetsera zingagwiritsidwe ntchito.za kuwotcherera.Reflow soldering ndiyo njira yomwe imagwiritsidwa ntchito kwambiri polumikizira zida zamagetsi ndi ma board osindikizidwa ndiukadaulo wapamtunda.Njira ina ndikulumikiza zida zamagetsi kudzera pamabowo okwera.

Ntchito ya injini ya reflow soldering?

Kutentha kwa ntchito ya reflow soldering ndipamwamba kwambiri, ndipo ntchito yaikulu ya galimoto ndikuyendetsa gudumu la mphepo kuti iwononge kutentha.

Kodi reflow soldering ili ndi magawo angati a kutentha?Kutentha kotani?Kodi mfungulo yake ndi iti?

Chengyuan reflow soldering imagawidwa m'zigawo zinayi zotentha molingana ndi momwe kutentha kumagwirira ntchito: malo otenthetsera, malo otenthetsera nthawi zonse, malo osungira, ndi malo ozizira.

Common reflow soldering mumsika zimaphatikizapo eyiti kutentha zone reflow soldering, zisanu ndi chimodzi kutentha zone reflow soldering, khumi kutentha zone reflow soldering, khumi ndi awiri kutentha zone reflow soldering, khumi ndi zinayi kutentha zone reflow soldering, etc. Izi zikhoza kupangidwa malinga ndi zosowa za makasitomala.Komabe, 8 zokha kutentha zone reflow soldering ndizofala pamsika wa akatswiri.Kwa reflow soldering m'madera asanu ndi atatu a kutentha, kutentha kwa chigawo chilichonse cha kutentha kumakhudzana kwambiri ndi phala la solder ndi mankhwala kuti agulitsidwe.Ntchito ya chigawo chilichonse ndi yofunika kwambiri.Nthawi zambiri, madera oyamba ndi achiwiri amagwiritsidwa ntchito ngati madera otenthetsera kutentha, ndipo lachitatu ndi lachinayi asanu ndi malo otentha.Kutentha kwanthawi zonse, 678 ngati malo owotcherera (zofunika kwambiri ndi zigawo zitatuzi), madera 8 angagwiritsidwenso ntchito ngati gawo lothandizira la malo ozizira, ndi malo ozizira, awa ndiye maziko, ziyenera kunenedwa kuti ochepa madera ndi ofunikira , Ubwino wazinthu uyenera kukonzedwa, dera lomwe ndiye chinsinsi!

1. Preheating zone

Malo otentha amatenthedwa mpaka madigiri 175, ndipo nthawi yake ndi pafupifupi 100S.Zitha kuwoneka kuchokera ku izi kuti kutentha kwa malo otenthetserako kutha kupezeka (chifukwa chowunikirachi chimagwiritsa ntchito kuyesa kwa intaneti, sichinalowe m'malo otentha kwa nthawi kuchokera 0 mpaka 46S. , nthawi 146-46 = 100S, popeza kutentha kwa mkati ndi 26 madigiri 175–26 = 149 madigiri / 100S = 1.49 madigiri/S)

2. Kutentha kwanthawi zonse

Kutentha kwakukulu m'dera la kutentha kosasinthasintha kumakhala pafupifupi madigiri 200, nthawiyo ndi masekondi 80, ndipo kusiyana pakati pa kutentha kwakukulu ndi kutentha kochepa ndi madigiri 25.

3. Reflow zone

Kutentha kwapamwamba kwambiri m'dera la reflow ndi madigiri 245, kutentha kotsika kwambiri ndi madigiri 200, ndipo nthawi yofikira pachimake ndi pafupifupi 35 / S;kutentha mu reflow zone
Mlingo: 45 madigiri / 35S = 1.3 madigiri / S Malingana ndi (momwe mungakhazikitsire kutentha kwa kutentha moyenera), zikhoza kuwoneka kuti nthawi yokhotakhota kutentha iyi kuti ifike pamtengo wapatali ndi yaitali kwambiri.Nthawi yobwereza yonse ndi pafupifupi 60S

4. Malo ozizira

Nthawi yozizirirapo ndi pafupifupi 100S, ndipo kutentha kumatsika kuchokera ku madigiri 245 kufika pafupifupi madigiri 45.Liwiro lozizira ndi: 245 madigiri—45 madigiri = 200 madigiri/100S=2 digiri/S