Imiba efuna ukuqwalaselwa:

Iphepha leSulfur-free liphepha elikhethekileyo lenkqubo yonyango ye-PCB, egcinwe kwindawo yokugcina impahla epholileyo nengena umoya, ihlanganiswe kakuhle, kude nelanga elithe ngqo, kude nemithombo yomlilo kunye nemithombo yamanzi, kwaye ikhuselwe kubushushu obuphezulu, ukufuma kunye nokudibanisa. ulwelo (ingakumbi iasidi kunye nealkali)!

iinkcukacha

Ubunzima: 60g, 70g, 80g, 120g.
Ixabiso le-Orthogonality: 787 * 1092mm.
Ixabiso elikhulu: 898 * 1194mm.
Inokunqunyulwa ngokweemfuno zabathengi.

Iimeko zokugcina kunye nobomi beshelufu.

Gcina kwindawo eyomileyo necocekileyo ekwi-18℃ ~ 25℃, kude nemithombo yomlilo kunye nemithombo yamanzi, kunqande ukukhanya okuthe ngqo kwelanga, kwaye uvale ipakethe ngeshelufu yobomi bonyaka omnye.

Iiparamitha zobugcisa zeemveliso.

1. sulfur dioxide ≤50ppm.
2. Uvavanyo lwe-tape yokunamathela: umphezulu awunayo inwele ewela isiganeko.

Isicelo

Ikakhulu isetyenziselwa ukupakishwa kwesilivere, njengeebhodi zesekethe, ii-LED, iibhodi zeesekethe, ii-terminals ze-hardware, amanqaku okukhusela ukutya, ukupakishwa kweglasi, ukupakishwa kwe-hardware, ukuhlukana kwepleyiti yensimbi engenasici, njl.

Kutheni ufuna iphepha elingenasalfure?

Ngaphambi kokuba sithethe malunga nokuba kutheni kusetyenziswa iphepha le-sulfur-free, kufuneka sithethe ngento ethi "PCB" (ibhodi yesekethe eprintiweyo) ekhuselwe ngephepha le-sulfur-free-PCB yinkxaso yamacandelo e-elektroniki kunye nenye yezinto ezibalulekileyo kwi-elektroniki. ishishini.Phantse lonke uhlobo lwezixhobo zombane, ukusuka kwiiwotshi zombane kunye nekhaltyhuleyitha ukuya kwiikhompyuter kunye nezixhobo zonxibelelwano, kufuneka iPCB iqonde uqhagamshelo lombane phakathi kwamacandelo ahlukeneyo.

Umzimba ophambili we-PCB lubhedu, kwaye umaleko wobhedu usabela ngokulula kunye neoksijini esemoyeni ukuvelisa i-cuprous oxide emnyama emnyama.Ukuze uthintele i-oxidation, kukho inkqubo yokubekwa kwesilivere kwimveliso yePCB, ke ibhodi yePCB ikwabizwa ngokuba yibhodi yokubeka isilivere.Inkqubo yokubeka isilivere iye yaba yenye yeendlela zokugqibela zonyango lwe-PCB eprintiweyo.

Ibhodi yesekethe yokupakishwa kweSulfur-free, kodwa nokuba inkqubo yokubeka isilivere yamkelwe, ayinaziphene ngokupheleleyo:

Kukho ukuhlobana okukhulu phakathi kwesilivere nesalfure.Xa isilivere idibana negesi ye-hydrogen sulfide okanye i-ion zesulfure emoyeni, kulula ukuvelisa into ebizwa ngokuba yisilivere sulfide (Ag2S), eya kungcolisa i-bonding pad kwaye ichaphazele inkqubo ye-welding elandelayo.Ngaphezu koko, isilivere yesulfide inzima kakhulu ukuyinyibilika, nto leyo ezisa ubunzima obukhulu ekucoceni.Ke ngoko, iinjineli ezikrelekrele ziye zeza nendlela yokwahlula i-PCB kwiiyoni zesulfure emoyeni kunye nokunciphisa unxibelelwano phakathi kwesilivere nesalfure.Liphepha elingenasalfure.

Ukushwankathela, akunzima ukufumanisa ukuba injongo yokusebenzisa iphepha elingenayo isulfure ilandelayo:

Okokuqala, iphepha elingenasalfure ngokwalo aliqulathanga sulphur kwaye aliyi kusabela ngomaleko wokubekwa kwesilivere kumphezulu wePCB.Ukusebenzisa iphepha elingenasalfure ukusonga iPCB kunokunciphisa ngempumelelo unxibelelwano phakathi kwesilivere nesalfure.

Okwesibini, iphepha elingenayo i-sulfure lingadlala indima yodwa, ukuphepha ukusabela phakathi kobhedu oluphantsi kwesilivere kunye ne-oksijini emoyeni.

Kwikhonkco lokukhetha iphepha elingenayo isulfure, kukho ngokwenene amaqhinga.Umzekelo, iphepha elingenasulfure lifuna ukuhlangabezana neemfuno ze-ROHS.Iphepha eliphezulu elingenasulfure aliqulathanga sulphur kuphela, kodwa likwasusa ngokungqongqo izinto eziyityhefu ezifana neklorin, ilothe, i-cadmium, i-mercury, i-hexavalent chromium, i-polybrominated biphenyls, i-polybrominated diphenyl ethers, njl., ehlangabezana ngokupheleleyo neemfuno ze-EU. imigangatho.

Ngokumalunga nokumelana nobushushu, iphepha le-logistics linepropati ekhethekileyo yokumelana nokushisa okuphezulu (malunga ne-180 degrees Celsius), kunye nexabiso le-pH lephepha lingathathi hlangothi, elinokukhusela ngcono izinto ze-PCB kwi-oxidation kunye ne-yellowing.

Xa upakisha ngephepha elingenayo isulfure, kufuneka sinikele ingqalelo kwinkcukacha, oko kukuthi, ibhodi yePCB enobuchwepheshe obuntywiliselwa ngesilivere kufuneka ifakwe ngokukhawuleza emva kokuba iveliswe, ukuze kuncitshiswe ixesha lokunxibelelana phakathi kwemveliso nomoya.Ukongeza, xa upakisha ibhodi ye-PCB, iiglavu ezingenasulfure kufuneka zinxitywe kwaye akufanele zichukumise indawo ene-electroplated.

Ngemfuno ekhulayo ye-PCB engenalothe eYurophu naseMelika, iPCB enesilivere kunye netekhnoloji yokubekwa kwenkcenkce iye yaba yeyona nto iphambili kwimarike, kwaye iphepha elingenasalfure linokuqinisekisa ngokupheleleyo umgangatho wesilivere okanye i-tin yokubeka i-PCB.Njengohlobo lwephepha lemizi-mveliso eluhlaza, iphepha le-sulphur-free liya kuthandwa ngakumbi kwiimarike, kwaye libe ngumgangatho wokupakisha we-PCB kushishino.

Izizathu zokusebenzisa iphepha elingenayo isulfure.

Kufuneka unxibe iiglavu ezingenasalfure xa ubamba ibhodi enesilivere.Ipleyiti yesilivere kufuneka yohlulwe kwezinye izinto ngephepha elingenasulfure ngexesha lokuhlolwa nokuphatha.Kuthatha iiyure ezisi-8 ukugqiba ibhodi yokutshona yesilivere ukusuka kwixesha lokuphuma kumgca wokutshona wesilivere ukuya kwixesha lokupakishwa.Xa upakisha, ibhodi yesilivere yeplating kufuneka ihlulwe kwisikhwama sokupakisha ngephepha elingenaso sulfure.

Kukho ukuhlobana okukhulu phakathi kwesilivere nesalfure.Xa isilivere idibana negesi ye-hydrogen sulfide okanye i-ion zesulfure emoyeni, kulula ukwenza ityuwa yesilivere enganyibiliki kakhulu (Ag2S) (ityuwa yesilivere yeyona nto iphambili ye-argentite).Olu tshintsho lwekhemikhali lunokwenzeka kwixabiso elincinci kakhulu.Ngenxa yokuba isilivere yesulfide ingwevu-mnyama, ngokunyuka kokusabela, isilivere sulfide iyanda kwaye iyajiya, kwaye umbala ongaphezulu wesilivere uguquka ngokuthe ngcembe ukusuka kumhlophe ukuya kumthubi ukuya kungwevu okanye kumnyama.

Umahluko phakathi kwephepha elingenasulfure kunye nephepha eliqhelekileyo.

Iphepha lihlala lisetyenziswa kubomi bethu bemihla ngemihla, ngakumbi yonke imihla xa sasingabafundi.Iphepha liphepha elicekethekileyo elenziwe ngefiber yezityalo, elisetyenziswa kakhulu.Iphepha elisetyenziswe kwiinkalo ezahlukeneyo lihlukile, njengephepha lemizi-mveliso kunye nephepha lendlu.Iphepha lemizi-mveliso elifana nephepha lokushicilela, iphepha elingenasalfure, elifunxa ioyile, iphepha lokusonga, ikraft paper, iphepha elingangenwa luthuli, njl. njl makhe sichaze umahluko phakathi kwephepha lemizi-mveliso elingenasulphur kunye nephepha eliqhelekileyo.

Iphepha elingenasulfure

Iphepha leSulfur-free liphepha elikhethekileyo lokuphehla elisetyenziswa kwi-PCB inkqubo yesilivere kubenzi bebhodi yesekethe ukunqanda ukusabela kweekhemikhali phakathi kwesilivere kunye nesalfure emoyeni.Umsebenzi wayo kukugcina isilivere ngekhemikhali kwaye ugweme ukusabela kweekhemikhali phakathi kwesilivere kunye nesulfure emoyeni, okukhokelela ekubeni phuzi.Ngaphandle kwesulfure, inokuphepha ukungonakali okubangelwa ukusabela phakathi kwesulfure kunye nesilivere.

Kwangaxeshanye, iphepha elingenasulfure likwanqanda ukusabela kweekhemikhali phakathi kwesilivere kwimveliso ye-electroplated kunye nesalfure emoyeni, okukhokelela ekubeni imveliso ibe tyheli.Ngoko ke, xa imveliso igqityiwe, imveliso kufuneka ifakwe ngephepha le-sulfur-free ngokukhawuleza, kwaye iiglavu ezingenayo i-sulfure kufuneka zigqitywe xa udibana nemveliso, kwaye i-electroplated surface akufanele idibane nayo.

Iimpawu zephepha le-sulfur-free: iphepha elingenaso sulfure licocekile, alinathuli kwaye alina chip, lihlangabezana neemfuno ze-ROHS, kwaye aliqukethe isulfure (S), i-chlorine (CL), i-lead (Pb), i-cadmium (Cd), i-mercury (Hg), i-chromium ene-hexavalent (i-CrVI), i-biphenyls e-polybrominated kunye ne-polybrominated diphenyl ethers.Kwaye ingasetyenziswa ngcono kwibhodi yesekethe yePCB kushishino lwe-elektroniki kunye ne-hardware electroplating industry.

Umahluko phakathi kwephepha elingenasulfure kunye nephepha eliqhelekileyo.

1. Iphepha elingenayo i-sulfure liyakwazi ukuphepha ukusabela kweekhemikhali phakathi kwesilivere kwiimveliso ze-electroplated kunye nesulfure emoyeni.Iphepha eliqhelekileyo alifanelekanga iphepha le-electroplating ngenxa yokungcola okuninzi.
2. Iphepha le-sulphur-free liyakwazi ukuthintela ngokufanelekileyo ukusabela kweekhemikhali phakathi kwesilivere kwi-pcb kunye nesalfure emoyeni xa isetyenziswa kwishishini le-pcb.
3. Iphepha le-sulphur-free linokuthintela uthuli kunye neetshiphusi, kwaye ukungcola kwishishini le-electroplating kuya kuchaphazela umphumo we-electroplating, kwaye ukungcola kwisekethe ye-pcb kunokuchaphazela uxhulumaniso.

Iphepha eliqhelekileyo lenziwa ikakhulu ngemicu yezityalo, efana nemithi nengca.Izinto eziluhlaza zephepha elingenaso sulfure azikho nje imicu yezityalo, kodwa kunye nemicu engeyiyo isityalo, njengemicu yokwenziwa, iifayibha zekhabhoni kunye nemicu yesinyithi, ukuze kupheliswe isulfure, iklorini, ilothe, i-cadmium, i-mercury, i-chromium enehexavalent, i-polybrominated. iibiphenyls kunye nee-polybrominated diphenyl ethers ezivela ephepheni.Ukuze wenze ezinye iintsilelo zephepha lesiseko, kunenzuzo ukuphucula umgangatho wephepha kunye nokufezekisa injongo yokuphucula ukudibanisa.