Kwamitin PCB preprocessing yana haifar da matsalolin aiwatarwa

1. Akwai matsaloli masu ban mamaki da yawa a cikin tsarin PCB, kuma injiniyan aiwatarwa sau da yawa yana ɗaukar alhakin aikin bincike na asibiti (nazarin musabbabin dalilai da mafita). Don haka, babbar manufar fara wannan tattaunawar ita ce tattaunawa ɗaya bayan ɗaya a yankin kayan aiki, gami da matsalolin da mutane, injina, kayan aiki da yanayi ke iya haifar da su. Ina fatan zaku iya shiga ciki kuma ku gabatar da ra’ayoyin ku da ra’ayoyin ku

2. Samun damar yin amfani da kayan aikin riga -kafi, kamar layin yin sihiri na ciki, electroplating layin jan ƙarfe, D / F, anti walda (walda juriya)… Da sauransu

3. Takeauki layin riga-kafin maganin walda (walda juriya) na allon kewaye na PCB azaman misali (masana’antun daban-daban): gogewa da niƙa * ƙungiyoyi 2-> wankin ruwa-> tsinken acid-> wankin ruwa-> wukar iska mai sanyi -> sashin bushewa -> karɓar diski na rana -> fitarwa da karɓa

4. Gabaɗaya, ana amfani da goge -goge na ƙarfe tare da ƙafafun goga na #600 da #800, wanda zai shafi ƙazantar saman allo, sannan ya shafi adhesion tsakanin tawada da saman jan ƙarfe. A karkashin amfani na dogon lokaci, idan ba a sanya samfuran daidai a hagu da dama ba, yana da sauƙi don samar da kasusuwa na kare, wanda zai haifar da rashin daidaituwa na saman jirgin, har da nakasa na layi da bambancin launi daban-daban tsakanin farfajiyar jan ƙarfe da tawada bayan bugu, Saboda haka, ana buƙatar dukkan aikin goga. Kafin aikin niƙa buroshi, za a gudanar da gwajin alamar goga (za a ƙara gwajin fashewar ruwa idan akwai D / F). Matsayin alamar buroshi da aka auna shine kusan 0.8 ~ 1.2mm, wanda ya bambanta gwargwadon samfura daban -daban. Bayan an sabunta goga, za a gyara matakin ƙafafun buroshi, kuma za a ƙara man shafawa akai -akai. Idan ba a tafasa ruwa ba a lokacin niƙa, ko matsin feshin ya yi ƙanƙara don samar da kusurwa mai siffar fan, foda na jan ƙarfe yana da sauƙin faruwa, Ƙanƙarar jan ƙarfe zai haifar da ɗan gajeren zango (yanki mai kauri mai kauri) ko gwajin babban ƙarfin da bai cancanta ba gwajin samfurin gama

Wata matsala mai sauƙi a cikin ƙoshin lafiya shine oxyidation na farantin farantin, wanda zai haifar da kumfa a saman farantin ko cavitation bayan H / A

1. Matsayin madaidaicin abin riƙe ruwa abin birgewa na prereatment ba daidai ba ne, don haka ana kawo acid ɗin cikin sashin wankin ruwa fiye da kima. Idan adadin tankokin wankin ruwa a sashin baya baya isa ko ruwan allurar bai isa ba, ragowar acid akan farfajiyar farantin zai haifar

2. Ingancin ruwa mara kyau ko ƙazanta a sashin wankin ruwa shima zai haifar da manne batutuwan waje a saman jan ƙarfe

3. Idan abin sha na abin sha ya bushe ko ya cika da ruwa, ba zai iya ɗaukar ruwa yadda yakamata akan samfuran da za a shirya ba, wanda zai haifar da ruwa mai yawa a saman faranti da cikin rami, da wukar iska mai biyo baya ba zata iya taka rawarta ba. A wannan lokacin, mafi yawan cavitation zai kasance a gefen rami a cikin yanayin hawaye

4. Lokacin da har yanzu akwai sauran zafin jiki yayin fitarwa, ana nade farantin, wanda zai oxidize saman tagulla a cikin farantin.

Gabaɗaya magana, ana iya amfani da mai binciken pH don saka idanu akan darajar pH na ruwa, kuma ana iya amfani da hasken infrared don auna zafin zazzabin da ya rage na saman farantin. An shigar da farantin farantin hasken rana tsakanin fitarwa da tari retractor don sanyaya farantin. Dole ne a kayyade rigar abin nadi abin sha. Zai fi kyau a sami ƙungiyoyi biyu na ƙafafun shan ruwa don tsaftacewa a madadin. Ana buƙatar tabbatar da kusurwar wuƙar iska kafin aikin yau da kullun, kuma kula da ko bututun iskar da ke ɓangaren bushewa ya faɗi ko ya lalace