OSP maitiro e Pcb bhodhi

1. Mukuwedzera kune mafuta

Mhedzisiro yekubvisa mafuta inobata zvakananga iyo firimu inogadzira mhando. Kubviswa kwakashata kwemafuta, kukora kwefirimu hakusi yunifomu. Kune rumwe rutivi, kusungirirwa kunogona kudzorwa mukati mehutano hwekugadzirisa kuburikidza nekuongorora mhinduro. Nekune rumwe rutivi, zvakare inofanira kazhinji kutarisa kana mhedzisiro yekubvisa mafuta yakanaka, kana mhedzisiro yekubvisa mafuta isina kunaka, inofanira kutsiviwa nenguva mukuwedzera kune mafuta.

2. Micro erosion

Chinangwa che microetching ndechekugadzira hutsinye hwemhangura kuti ive nyore kugadzira firimu. Ukobvu hwe micro-etching hunokanganisa zvakananga chiyero chekugadzira firimu, saka zvakakosha kuchengetedza kugadzikana kweiyo micro-etching ukobvu kuti iite yakagadzikana firimu ukobvu. Kazhinji, zvakakodzera kudzora microetching ukobvu pa1.0-1.5um. Pamberi pekuchinja kwega kwega, iyo micro-erosion rate inogona kuyerwa, uye iyo micro-erosion nguva inogona kutariswa zvinoenderana neiyo micro-erosion rate.

3. Mufirimu

DI mvura inofanirwa kushandiswa kugezesa firimu risati ragadzirwa kudzivirira kusvibiswa kwemvura inogadzira firimu. DI mvura inofanirawo kushandiswa kugeza mushure mekugadzirwa kwefirimu, uye kukosha kwePH kunofanirwa kudzorwa pakati pe4.0 ne7.0 kudzivirira firimu kuti rirege kusvibiswa uye kukuvara. Kiyi yeOSP maitiro kudzora ukobvu hweanti-oxidation firimu. Firimu racho rakanyanya kutetepa uye harina simba rekupisa. Mune reflow welding, iyo firimu haigone kumira kutonhora kwakanyanya (190-200 ° C), iyo inozopedzisira yakanganisa kuita kwewelding. Mumutsara wemagetsi emagetsi, iyo firimu haigone kunyungudika zvakanaka nekuyerera, iyo inokanganisa welding performance. Iyo yakawanda yekudzora firimu ukobvu inonyanya kukodzera pakati pe 0.2-0.5um.