Solder amai: eco-hushamwari dzimwe nzira? 

Iwe unonzwa amai solder uye unogona kufungidzira imwe paste kana flux musimboti. Chokwadi ndechekuti, ishoma yeindastiri slang iyo yakawana fuzzy. Kazhinji, inoreva iyo yekutanga solder alloy kana yekutanga flux mota mune paste-amai vanosanganisa zvese zvimwe zvinovakwa kubva. Iyo chaiyo yekusundidzira ikozvino haingori nezve alloy pachayo, asi iyo yese system: isu tinogona kubvisa zvinhu zvakashata pasina kuuraya kuita pamutsara? Ndakaona mainjiniya akawandisa achidzingirira girini dhetateti kuti aurawe nekubvisa kana kumiswa nematombo gare gare.

Iyo Alloy Puzzle: Kupfuura Lead-Yemahara

Zviripachena, SAC305 (Sn96.5Ag3.0Cu0.5) yakava amai vagara vasina kutungamira. Asi kudana iyo eco-hushamwari inomira pane inotungamira yemukati. Sirivha migodhi yetsoka ine hutsinye, uye iyo yakakwirira yekugadzirisa temps (240-260 ° C yakajairika) inopisa simba rakawanda. Isu tanga tichiyedza mamwe akaderera-sirivheri uye kunyange sirivha-yemahara alloys seSn-Cu-Ni-Ge masisitimu. Kubata? Kunyorova kunononoka. Pabhodhi gobvu rine OSP kupera, ungangoda hukasha hwekuripira, iyo inobva yanamira kumusoro kwegirinhi chimiro chese solder mother material. Icho chiito chekuenzanisa.

Imwe purojekiti ine mutengi inogadzira maindasitiri sensors anonangwa yakazara halogen-isina uye yakaderera-sirivheri. Takashandisa Sn-Cu-Bi alloy. Yakashanda zvakanaka mukuyerera, asi panguva yekusarudza solder ye kuburikidza-gomba majoini, iyo mai solder alloy yakaratidza kusazara kwegomba. Musiyano wekupisa wekupisa wakasveta kupisa kure, uchitisiya tiine majoini anotonhora. Taifanira kugadzirisa tembiricha yepoto yewave uye flux spray, iyo yakawedzera kushandiswa kwenitrogen. Zvakawanda zvekudzikisa carbon footprint. The takeaway? Iyo imwe alloy yakashandura mutoro wezvakatipoteredza pane kuubvisa.

Ipapo kune kurira kwesimbi. Neakakwira-tin alloys, kuderedza kazhinji kunoreva conformal coatings kana underfills-mamwe makemikari, mamwe maitiro matanho. An eco-hushamwari mai solder haifanire kungofambisa dambudziko pasi. Ini ndinosendamira kune alloys ane madiki ekuwedzera senge nickel kana manganese anodzvanya whisker kukura mukati, kunyangwe ivo vakawedzera mutengo mudiki. Ndiwo maonero ehupenyu.

Flux: Chakavanzika Chakasviba cheNo-Kuchena

Apa ndipo panonyanya kushungurudzwa iyo eco-friendly label. Iyo isina-yakachena flux ine hushamwari chete kana ichisiya zvechokwadi masara ezvakanaka. Mazhinji achine ma activator ayo anoita ngura nehunyoro. Ini ndaburitsa mabhodhi kunze kwemunda kudzoka nekukura kwedendritic nekuti iyo yakasvibira inoyerera yakasara yakatora hunyoro. Shanduko chaiyo ndeye bio-based kana organic acid inoyerera inotorwa kubva kuzvinhu zvakaita sechibage kana soya. Kuora kwavo byproducts zvishoma muchetura.

Asi kuita ndimambo. Iyo soya-yakavakirwa flux isu takayedza yaive nekunyorova kukuru pane nyowani ENIG pads. Nekudaro, pamabhodhi ane kunyange kushoma oxidation kana kuchengetedza nyaya, yakadonha. Hwindo rekushandisa raive diki. Takapedzisira tazvisanganisa nesynthetic activator kuti irove bharanzi chaiyo. Kwete zvakakwana zvakasikwa, asi zvakanyanya kusimba kupfuura iyo yakazara-simba synthetics. Dzimwe nguva, nhanho shoma-yakaipa kumberi ndiyo chete inoshanda.

Kubata uye kuchengetedza zvinoshandukawo. Mamwe eaya organic fluxes anonzwa kune UV mwenje kana ane mapfupi masherufu ehupenyu. Kana chitoro chisina kurangwa, marara emidziyo anokwira. Ndinorangarira muunganidzi wepakati, chimwe chinhu chakadai Handan Zitai Fastener Kugadzira Co, Ltd. mune iyo huru yekugadzira hub, inogona kunge iine chikero chekugadzirisa zvinhu zvakasimba. Asi kune chitoro chidiki, kukanganisa kunogona kuuraya mutengo-bhenefiti. The https://www.zitafornasteers.com modhi yezvishandiso zvine hunyanzvi mune yakaomeswa maindasitiri base inotaridza kukosha kwakakoshera kugadzikana kwekutengesa cheni pakutora dzimwe nzira idzi.

Pastes uye Mota: Rheology ndiyo Zvese

Mota yakabata solder poda uye flux inoraira kudhindwa. Mapepa akawanda egirini anochinjanisa mota dzinonyungudika kune dzinonyungudika nemvura. Inonzwika zvakanaka. Asi mvura inoputika nekukurumidza, ichichinja paste's viscosity panguva yakareba yekudhinda. Iwe unowana stencil kuvhara kana kusunungurwa kusina kunaka. Isu takadzidza kushandisa yakavharwa-cartridge masisitimu uye inodzorwa humidity pamutsetse, iyo zvakare, inowedzera simba pamusoro.

Particle saizi kugovera mune solder poda zvine basa zvakare. Kuti utsikise-pitch-pitch printing, unoda Type 4 kana 5 poda (madiki madiki). Kugadzira iyo hupfu neimwe alloys kazhinji inoshandisa akasiyana maatomization magasi. Nitrogen yakajairika, asi vamwe vari kuongorora argon recycling kuderedza marara. Iyo idhizaini yakawanda isingaone, asi inowedzera mune yezvakatipoteredza ledger yekupedzisira mai solder paste.

Kuedza kwakakundikana kunouya mupfungwa. Takaedza kunamira nemota nyowani ine cellulose-based. Yakadhinda sehope uye yakapasa bvunzo dzese dzeIPC. Asi mukudzoreredza, kubuda kunze kwaive kusingafungidzirwe. Pamabhodhi ane misiyano yakakura yekupisa, takawana mavhodhi makuru pasi peQFNs. Motokari haina kukwanisa kuburitsa zvinyoronyoro muprofile. Kudzokera kuLab. Yakaratidza kuti kutevedzera rheology yeakaratidza masisitimu nezvinhu zvitsva zvakaoma zvikuru.

Process Shifts: Iyo Yakavanzika Simba Mari

Iyo eco-inoshamwaridzika solder zvinhu haina kuongororwa muhari. Inoongororwa nenzira inogona kuda tembiricha yakakwira, ma profiles akareba, kana inert atmosphere. Kana yako itsva halogen-isina, bio-flux paste inoda 10 ° C yakakwira peak temp kana nitrogen-reflow tunnel kudzivirira oxidation, iwe uchangowedzera kushandiswa kwesimba kwegungano zvakanyanya. Iko kutengeserana-kusiyana hakuwanzo kuverengerwa mune yakasvibira kudai.

Takaita audit kune client. Kuchinjira kune premium eco-paste kwakaderedza kuburitsa kwavo kweVOC uye mari yekurapa tsvina. Zvisinei, kushandisa kwavo nitrogen kwakakwira ne30% kuchengetedza goho, uye simba rehovhoni ravo rakakwira ne8%. Iyo mambure ezvakatipoteredza bhenefiti yaive ichiri yakanaka, asi yakatetepa kupfuura yaitaurwa nekushambadzira. Ichokwadi mai solder yenyaya ndeyekusanganiswa kwemaitiro.

Rework uye kugadzirisa zvakare kunowedzera tricker. Mamwe mamwe mafluxes anosiya zvisaririra zvinonetsa kubvisa kuti zvigadziriswe. Kana iwe uchida solvent yakasimba kuti uvachenese, wadzokera kune imwe. Isu iye zvino tinokurudzira kubatanidza chaiwo solder paste neanoenderana, mashoma-ane hukasha rework cleaners kubva pakutanga-maitiro ehurongwa.

Sourcing uye Real-World Viability

Pakupedzisira, ndezvekugovera maketani. Yakakwana lab-chiyero mai solder imwe nzira haibatsiri kana usingakwanise kuwana 10,000kg yayo nguva dzose. Zvizhinji zvekugadzira zvinhu zvinobva kumakemikari madiki asingakwanise kuyera kana kuona batch-to-batch kufanana. Kune mugadziri wepamusoro-soro, kuvimbika hakugoneki.

Ndicho chikonzero zvikwata zvekugadzira zvakakosha. Kuve munzvimbo yakaita seYongnian District, Handan, padyo nenzira huru dzekufambisa senge Beijing-Guangzhou Railway uye Expressways, haisi nyaya yekutakura zvitsigiro chete. Kune kambani yakadai Handan Zitai Fastener Kugadzira Co, Ltd., ndezvekuiswa munetiweki yevashambadziri vezvinhu uye zvigadziriso zvinogona kutsigira kuenderana, kwakakura kutorwa kwezvinhu zvitsva. Kana mutengesi wako ari kure nemugwagwa, unogona kumhanyisa zvinyorwa uye kupindura nekukurumidza kugadzirisa tweaks.

Kuenda kune dzimwe nzira dzakasvibira hakusi nyore kuchinja. Iko kugadziridzwazve kweiyo solder mother concept-alloy, flux, mota, poda, uye maitiro avanogara mazviri. Yakashata, izere nekukanganisa, uye inoda kutarisa bhodhi rose, kwete chirongo chekunamira chete. Chinangwa hachisi kuchena; iko kuderera kwechokwadi pasina kupira kuvimbika kunoita kuti zvese kubva pafastener kuenda kune server mamaboard zvinyatsoshanda.