Waɗanne sababbin buƙatu ne tsarin da ke ƙara balagagge ba tare da gubar ba a kan tanda mai sake fitowa?

Waɗanne sababbin buƙatu ne tsarin da ke ƙara balagagge ba tare da gubar ba a kan tanda mai sake fitowa?

Muna yin nazari daga bangarori masu zuwa:

l Yadda ake samun ƙaramin bambancin zafin jiki na gefe

Tun da taga tsarin siyar da ba tare da gubar ba ƙarami ne, sarrafa bambancin zafin jiki na gefe yana da mahimmanci.Yawan zafin jiki a cikin reflow soldering yana shafar abubuwa huɗu gabaɗaya:

(1) Isar da iska mai zafi

Tanderun da ba shi da gubar na yanzu duk sun ɗauki cikakken dumama iska mai zafi 100%.A cikin haɓaka tanda na sake kwarara, hanyoyin dumama infrared kuma sun bayyana.Duk da haka, saboda infrared dumama, da infrared sha da kuma reflectivity na daban-daban launi na'urorin ne daban-daban da kuma inuwa sakamako ne lalacewa ta hanyar tarewa kusa da asali na'urorin.Duk waɗannan yanayi biyu za su haifar da bambance-bambancen yanayin zafi.Siyar da ba tare da gubar ba yana da haɗarin tsallewa daga taga tsari, don haka fasahar dumama infrared an kawar da hankali a hankali a cikin hanyar dumama tanda.A cikin siyar da ba tare da gubar ba, ana buƙatar ƙarfafa tasirin canjin zafi.Musamman ga na'urar asali mai babban ƙarfin zafi, idan isassun canja wurin zafi ba za a iya samu ba, ƙimar dumama zai yi ƙasa a fili a bayan na'urar tare da ƙananan ƙarfin zafi, yana haifar da bambancin zafin jiki na gefe.Bari mu kalli hanyoyin canja wurin zafin iska guda biyu a cikin Hoto 2 da Hoto 3.

Hoto 2 Hanyar canja wurin iska mai zafi 1

Hoto 2 Hanyar canja wurin iska mai zafi 1

Iska mai zafi a cikin Hoto 2 yana fitowa daga ramuka na farantin dumama, kuma kwararar iska mai zafi ba ta da madaidaiciyar hanya, wanda ya fi dacewa, don haka tasirin zafi ba shi da kyau.

Zane na Hoto 3 an sanye shi da madaidaicin madaidaicin madaidaicin iska na iska mai zafi, don haka kwararar iska mai zafi yana mai da hankali kuma yana da madaidaiciyar jagora.Tasirin canjin zafi na irin wannan dumama iska mai zafi yana ƙaruwa da kusan 15%, kuma haɓaka tasirin canjin zafi zai taka rawa sosai wajen rage bambancin zafin jiki na gefe na manyan na'urori masu ƙarfin zafi.

Zane na Hoto na 3 kuma zai iya rage tsangwama daga iska ta gefe akan walda na allon kewayawa saboda kwararar iska mai zafi yana da madaidaiciyar hanya.Rage iska ta gefe ba kawai zai iya hana ƙananan abubuwa kamar 0201 akan allon kewayawa daga busa ba, amma kuma yana rage tsangwama tsakanin sassan zafin jiki daban-daban.

(1) Sarrafa saurin sarkar

Gudanar da saurin sarkar zai shafi bambancin zafin jiki na gefe na allon kewayawa.Gabaɗaya magana, rage saurin sarkar zai ba da ƙarin lokacin dumama don na'urori masu ƙarfin zafi mai girma, don haka rage bambancin zafin jiki na gefe.Amma bayan haka, saitin zafin zafin jiki na tanderun ya dogara ne akan buƙatun manna solder, don haka raguwa marar iyaka na saurin sarkar ba gaskiya ba ne a ainihin samarwa.

(2) Gudun iska da sarrafa ƙara

Mun yi irin wannan gwajin, muna kiyaye sauran yanayi a cikin tanda mai sake gudana ba canzawa kuma kawai rage saurin fan a cikin tanda mai juyawa da kashi 30%, kuma zazzabi a kan allon kewayawa zai ragu da kusan digiri 10.Ana iya ganin cewa sarrafa saurin iska da girman iska yana da mahimmanci don sarrafa zafin wutar tanderu.