Yadda ake Hana Ragowar Adhesive & Jini na PTFE High-Temperature Tef Lokacin Kare Yatsan Zinare na PCB a Dutsen SMT

Jiangsu Aokai New Materials, ƙwararrun masana'anta na tef ɗin zafin jiki na PTFE, yana ba da jagorar ƙwararru. A lokacin da PTFE high-zazzabi tef da ake amfani da su kare PCB zinariya yatsunsu a lokacin SMT taro, m saura (m adibas bar a kan zinariya yatsunsu bayan tef peeling) da m jini (m softens da overflows karkashin high zafin jiki, gurɓata unprotected yankunan ko PCB saman) bayan reflow soldering ko tabarbare sigogi da aka zaba ta hanyar zažužžukan. A ƙasa akwai tsari na tsari na mafita:

I. Tushen Binciken Rago & Jini

1. Ragowar Adhesive  Yana faruwa a lokacin da mannen ya fuskanci gazawar haɗin gwiwa (yagawar cikin gida na mannen Layer) ko gazawar canja wuri ta fuska (manne daga manne da manne da yatsun gwal). Abubuwan jan hankali na gama gari sun haɗa da rashin isassun juriyar zafin tef, mannewa tsoho, ko lokacin bawon mara kyau.

2. Jini Mai Mannewa  Dankin mannen yana faduwa sosai a ƙarƙashin yawan zafin jiki na sake kwarara, yana haifar da ƙarar ruwa sosai. Karkashin matsin lamba da aikin capillary, mannen ya mamaye gefen tef. Yawanci yana haifar da wannan ta hanyar kauri mai kauri mai kauri, saurin hawan zafin jiki, ko rashin juriyar zafin zafin na manne kanta.

II. Zaɓin Tef ɗin Da Ya dace - Maganin Mahimmanci

Tef ɗin PTFE na yau da kullun ba zai iya biyan matsananciyar buƙatun hanyoyin SMT ba. Dole ne a zaɓi samfuran da aka ƙera musamman don kariyar yatsa na zinari na SMT, tare da fifiko ga aikin tsarin mannewa:

 

: Matsayin Juriya na Zazzabi Juriya na ɗan gajeren lokaci ≥ 300°C, ci gaba da zafin sabis ≥ 260°C, da nisa ya zarce madaidaicin zafin jiki na siyarwar da ba ta da gubar (245-250°C).

Kauri mai mannewa : Kauri mafi girma baya daidaita mannewa mai ƙarfi. Fi son kaset tare da jimlar kauri na 0.08-0.13mm, masu nuna sirara amma masu girman haɗin kai don rage haɗarin zubar jini sosai.

· Anti-Bleed & Residue-Free Certification : Nemi anti-jini da sauran-free gwajin rahotanni sadaukar don SMT zinariya yatsa kariya daga masu kaya, da kuma gudanar da ainihin tanderu gwajin tare da samfurori.

III. Matsayin Sarrafa Tsari na Mataki Shida

1. Pre-Lamination: Surface Cleaning & Pre-treatment

Cikakkun ragewa: Yatsun zinari da kewayen PCB dole ne su kasance marasa tabon gumi, gurɓataccen mai da ragowar ruwa. Shafa da kyalle mara lint da aka tsoma a cikin ethanol mai anhydrous ko isopropyl barasa (IPA), sannan ya bushe sosai.

Busassun busassun: Tabbatar cewa PCBs ba su da ɗanshi gaba ɗaya kafin aikace-aikacen tef.

2. Lamination: Zero Tension & Cikakkun Ficewar iska

· Kada ka shimfiɗa tef: PTFE substrate yana da kyau ductility. Miqewa a lokacin lamination yana haifar da damuwa na ciki wanda ke haifar da raguwa a ƙarƙashin matsanancin zafin jiki, yana haifar da tsagewar mannewa, saura ko zubar jini na matsayi. Ajiye tef ɗin bisa dabi'a akan yatsun zinari kuma danna sauƙi don mannewa na farko.

Cikakken cirewar iska: Yi amfani da keɓaɓɓen abin nadi ko ƙwanƙwasa don turawa a hankali ba tare da kai tsaye ba daga tsakiya zuwa ɓangarorin biyu don cikar cikawa. Tabbatar da cikakken mannewa gefen ba tare da kumfa mai tarko ba; kumfa suna faɗaɗa ƙarƙashin zafi suna ɗaga gefuna na tef, suna haifar da ambaliya.

Daidaitaccen jeri: Daidaita gefuna tef tare da gefuna na yatsan zinari ko saƙa kaɗan da 0.2-0.5mm (idan ƙira ta yarda). Kada a taɓa rufe pads ko vias, kamar yadda siphonage capillary zai jawo narkakkar manne waje.

3. Sake Sauke Soldering: Haɓaka Bayanan Zazzabi

· Bi daidai da ƙayyadaddun yanayin zafin tef: Auna ainihin zafin jiki na allo don tabbatar da mafi girman zafin jiki da jimlar tsawon lokacin dumama tsakanin kewayon haƙurin tef.

· Tumatir mai laushi mai laushi: Kula da jinkirin yawan dumama (<2°C/s) kafin isa yankin laushi mai laushi (150°C-200°C). Zazzaɓin zafin zazzaɓi ba zato ba tsammani yana sassaukar da mannewa da rugujewar ɗanƙoƙinsa, yana haifar da zub da jini mai tsanani.

4. Lokacin Barewa: Bawon sanyi Yana Ba da sakamako mafi kyau

Yi sanyi sosai zuwa zafin ɗaki: Bayan sayar da, jira har sai zafin PCB ya faɗi ƙasa da 50 ° C (mafi dacewa zafin yanayi) kafin a bare tef ɗin. Adhesive ya kasance mai laushi da ƙananan haɗin kai a babban zafin jiki; tilasta zafi bawon sauƙi yana haifar da rabuwar Layer da ragowar manne.

· Dabarar kwasfa: Kwasfa a hankali a ƙaramin kusurwa 180° tare da ƙarfi iri ɗaya. Kar a ja da karfi idan aka ci karo da juriya.

5. Gudanar da Tsari: Sarrafa Rayuwar Rayuwa & Sake Amfani da Keɓaɓɓun

Aiwatar da aiwatarwa nan da nan: PCBs tare da lamintaccen tef ya kamata su shiga tanderun da aka dawo da sauri. A guji ajiya mai tsawo (sama da awanni 24) a cikin bitar don hana sha da ƙura.

· Amfani guda ɗaya kawai don wucewar tanderu: SMT tef ɗin zafi mai zafi abu ne mai yuwuwa. Ko da tef ɗin ya bayyana daidai bayan wucewar tanderu ɗaya, mannen ya sami ƙetare da tsufa; sake zagayowar dumama na biyu tabbas zai haifar da ragowar manne ko gazawar mannewa. Don PCB masu hawa biyu, maye gurbin da sabon tef kafin sarrafa gefe na biyu bayan wucewa ta farko.

6. Rashin Gudanar da Gaggawa & Tabbatarwa

Ƙananan zubar da manne: Dakatar da samarwa nan da nan da zarar an gano ragowar. Shafa a hankali tare da IPA-damped lint-free zane; aika allon don ƙwararrun tsaftacewa a cikin lokuta masu tsanani. Kada a taɓa gogewa da kayan aiki masu wuya.

Sabbin ingancin cancantar tef: Gudanar da cikakken samar da gwaji tare da ainihin PCBs 1:1. Bayan wucewar tanderu, kwasfa tef ɗin kuma duba wuraren yatsan zinari a ƙarƙashin ma'auni 40-50x don tabbatar da ragowar sifili da mannen sifili.

Abubuwan fasaha na sama sun samar da su Jiangsu Aokai New Materials Technology Co., Ltd.

Idan kuna son samun cikakkun bayanai dalla-dalla, yanayin aikace-aikacen da keɓaɓɓen mafita don cikakken fayil ɗin samfuranmu gami da PTFE babban zane mai zafin jiki, PTFE babban zafin jiki m tef, PTFE high-zazzabi raga bel, m zafi latsa bel, guda-gefe PTFE masana'anta, high-zazzabi-resistant fiber lamba mana, da zafi mai jure lamba bel da zafi mai zafi da ke ƙasa.

· Layin Sabis: Malam Guo +86 18944819998

· Layin Sabis: Malam Liu +86 13705266308

Kullum muna bin falsafar sabis na ƙwararru da mutunci, da zuciya ɗaya muna ba da mafita ta masana'antu ta tsaya ɗaya da sabis na abokin ciniki mai tunani ga duk abokan tarayya!