Solder Creeping Swivangelo & Switshuxo swa PTFE High-Temperature Tape

Tanihi muendli wa xihlovo xa xiphurofexinali xa lapi ra mahiselo ya le henhla ya PTFE, Jiangsu Aokai New Materials yi avelana indasitiri ya xiphurofexinali insights.Eka PCB hot air solder leveling, gold plating na immersion gold processes, solder creeping eka makumu yo sirhelela ya PTFE high-temperature tape swi vangiwa ngopfu hi mbuyelo lowu hlanganeke wa ku tsandzeka ka nyama ka thepi na tindzhawu ta maendlelo yo tlula mpimo.

I. Swivangelo swa Solder Creeping

Edge warping ya PTFE high-temperature tape forming gaps Hi nkarhi wa vuhumelerisi bya mahiselo yale henhla, matimba yo namarhela ya tape ya hunguteka loko mahiselo ya tlakuka. Loko adhesion yinga enelangi kuva yi lwisana na thermal stress, matlhelo ya tape yata soholota nyana naswona ya endla ti capillary gaps, leswi pfumelelaka liquid solder kuva yi nghena endzeni.

Wicking effect na solder dam accumulation Solder yitala ku gayela kuya eka tindzhawu letingana mahiselo yale henhla hi nyama. Loko ndzhawu leyi sirhelelekeke yiri eka mahiselo yale henhla swinene, liquid solder yi khandziya kuya e henhla kuya hi swivandla swa thepi eka wicking leyi tolovelekeke effect.Ku engetela kwalaho, thepi ya PTFE yo tiya ngopfu yi ta vumba magoza emakumu, leswi endlaka leswaku ku hlengeletiwa ka solder ku endla damu ra solder, leswi yaka emahlweni swi nyanyisa ku gayela ka solder.

Khwalithi ya swilo leswi nga fambelaniki swa thepi ya mahiselo yale henhla ya PTFE Leyara yo namarhela ya thepi yale hansi ya PTFE yitala ku khuluka, ku onhaka na masalela ya namarheta eka mahiselo yale henhla. A swi onhi ntsena xisirhelelo xa xisirhelelo, kambe switlhela swi thyakisa ti pads, leswi engetelaka swinene khombo ra solder creeping.

Swilo leswi thyakeke leswi hundzaka eka thepi ya PTFE Hambi loko thepi yi nga onhakanga, ku pfurha na ku phatsama vuhlalu bya solder lebyi saleke eka ti PCB vias, kumbe swiphemu leswintsongo swa solder leswi endliwaka hi flux vaporization hi nkarhi wa reflow soldering, swi nga nghena kumbe ku hundza eka ndzhawu yo sirhelela naswona swi vanga ku thyakisa.

Ku lamination loku nga fanelangiki na ku cinca-cinca ka phurosese Ku tsandzeka ku basisa vuandlalo bya xisirhelelo kumbe ku kandziyela loku nga enelangiki hi nkarhi wa ku cheriwa ka thepi swi ta siya swivandla swa ku nghena ka solder.Ku tlakuka ka mahiselo hi xihatla ngopfu hi nkarhi wa reflow soldering swi engetela swinene ku khuluka ka solder, leswi endlaka leswaku swi olova ku tshoveka hi ndzilakano wa thepi ya PTFE.

Ku tsakama lokukulu ka swiphemu swa nsuku leswi pfanganisiweke leswi nyanyisaka xiphiqo Swiphemu swa nsuku leswi pfanganisiweke na nsuku na ku nyuperisiwa swi na ku tsakama ka kahle swinene ka solder. Loko solder yi hlangana na vuandlalo bya nsuku, yi hangalaka hiku hatlisa eka makumu ya tape, leswi endlaka leswaku kuva na creeping range leyikulu swinene kutlula OSP na maendlelo ya ntolovelo ya hot air solder leveling.Swihoxo swofana na gold layer pinholes na nickel corrosion swita vanga ku tsakama ka ndzhawu lokunga tolovelekangiki naswona swita nyanyisa ku rhendzeleka ka edge solder.

II. Switshuxo: Pulani ya Xikombelo leyi hlelekeke ya Thepi ya PTFE ya Khwalithi ya le Henhla

Hlawula switirhisiwa leswi faneleke naswona u ringanisa matirhelo ya lamination Amukela thepi ya khwalithi yale henhla ya PTFE ya mahiselo yale henhla leyi endleriweke hindlela yo hlawuleka eka maendlelo ya mahiselo yale henhla ya PCB, leyingana ku tiya ka mahiselo ya 250~260 °C ku fikelela swilaveko swa vuhumelerisi leswinga riki na ntsopfu.Basisa vuandlalo bya xisirhelelo hi vukheta hi isopropanol loko unga se chela ku tiyisisa ku ringanela hiku hetiseka handle ka edge warping kumbe swivandla. Ambala magilavu ​​hi nkarhi wa ntirho ku papalata ku thyakisa hi mafurha.

Sivela ku phatsama ka vuhlalu bya solder kuva ku tshoveka hi xisirhelelo Amukela fomula ya solder paste ya low-splashing naku antswisa curve ya mahiselo ya reflow. Ku hisa loku ringaneleke swi papalata ku vaporization ka solvent hi matimba naswona swi hunguta khombo ra vuhlalu lebyintsongo bya solder lebyi tshovekaka eka tape shielding.

Tiyisisa vulawuri bya ku gandlisa na ku basisa switirhisiwa Hlantswa stencil endzhaku ko gandlisa endzhaku ko gandlisa eka 2–3 wa ti PCB tin’wana na tin’wana, naswona amukela dry wiping + vacuum cleaning mode ku sivela ku phatsama ka solder paste eka ndzhawu ya thepi.Nkarhi na nkarhi susa residual solder powder eka muchini wo gandlisa, mounter tracks na fixtures ku herisa thyaka ra vumbirhi.

Vulawuri byo tika bya khwalithi ya ku nghena na ya phurosese ku endla swipimelo swa switirhisiwa Lava vaphakeri va PCB ku nyika switifikheti swa khwalithi ya ku pfala leswi faneleke ku tiyisisa leswaku ti-via ti tatiwile hi ku helela na ku sivela vuhlalu bya solder lebyi fihliweke ku hundza thepi yo sirhelela.Hlela ku kamberiwa ka solderability hi xitshuketa eka tibodo leti pfanganisiweke hi nsuku. Loko swiphiqo swofana na thin gold layer na nickel corrosion swikumeke, pfalela switirhisiwa leswinga na swihoxo ku papalata ku gayela lokukulu ka solder loku vangiwaka hiku hangalaka ka solder lokunga tolovelekangiki.

Amukela maendlelo yan’wana ku hunguta ku titshega hi thepi Loko dizayini ya xiendliwa yi pfumela, tirhisa vutshunguri bya le henhla byo hlawula, kufana na local gold plating ntsena eka ti pads xikan’we na post-processing ya tintiho ta nsuku. Leswi swi herisa xilaveko xa edge shielding hi PTFE tape naswona hi xisekelo swi tlhantlha mhaka ya solder creeping.

Ku hlawuriwa loku ringaneleke, standardized lamination na full-process collaborative control ya PTFE high-temperature tape i swilotlelo swa nkoka swo herisa solder creeping. Ku antswisa vuxokoxoko bya matirhiselo swinga antswisa kahle mbuyelo wa vuhumelerisi xikan’we naku hunguta ku durha ka ntirho nakambe.

Vuxokoxoko bya xithekiniki lebyi nga laha henhla byi nyikiwile hi Jiangsu Aokai New Materials Technology Co., Ltd.

Loko u lava vuxokoxoko bya tipharamitha, timhaka ta xikombelo na swintshuxo leswi endleriweke lapi ra mahiselo ya le henhla ya PTFE, thepi ya mahiselo ya le henhla ya PTFE, bandi ra mesh ra PTFE, bandi ra muchini wo fusa leri nga na swirhabyani, lapi leri pfanganisiweke na PTFE leri nga na tlhelo rin’we, bandi ro fambisa leri nga tiyangiki eka mahiselo ya le henhla na lapi ra fiberglass, hi kombela u hi tihlanganisa:

·  Tatana Guo: +86 18944819998

·  Nkulukumba Liu: +86 13705266308

Hi namarhela filosofi ya bindzu ya vutshila na vutshembeki, naswona hi nyika swintshuxo swa nseketelo wa tiindasitiri swa xiyimo xin’we na vukorhokeri byo tekela enhlokweni bya le ndzhaku ka ku xavisiwa eka vaxavi va misava hinkwayo.