1. Paunenge uchibika maPCB makuru-saizi, shandisa yakachinjika stacking kuronga. Inokurudzirwa kuti nhamba yakawanda ye stack haifaniri kudarika zvidimbu makumi matatu. Ovheni inoda kuvhurwa mukati memaminitsi gumi mushure mekubikira kuti utore PCB woiisa pasi kuti itonhodze. Mushure mekubika, inoda kudzvinyirirwa. Anti-bend zvigadziriso. MaPCB mahombe haakurudzirwe kubikwa kwakamira, sezvo ari nyore kukotama.
2. Paunenge uchibika maPCB madiki uye epakati, unogona kushandisa flat stacking. Nhamba yepamusoro ye stack inokurudzirwa kuti isapfuure zvidimbu makumi mana, kana inogona kuva yakarurama, uye nhamba yacho haina kukwana. Iwe unofanirwa kuvhura ovheni uye wotora PCB mukati memaminitsi gumi ekubika. Bvumira kuti itonhorere, uye dzvanya iyo anti-bending jig mushure mekubika.
Chengetedzo kana PCB ichibika
1. Kupisa kwekubikira hakufaniri kudarika Tg point yePCB, uye zvinowanzodiwa hazvifaniri kudarika 125 ° C. Mumazuva ekutanga, Tg poindi yemamwe maPCB ane lead yaive yakadzikira, uye ikozvino Tg ye lead-isina PCBs yakanyanya kupfuura 150 ° C.
2. PCB yakabikwa inofanira kushandiswa nokukurumidza sezvinobvira. Kana isina kushandiswa, inofanira kurongedzerwa vacuum nekukasira. Kana ikaiswa muwekishopu kwenguva yakareba, inofanira kubikwa zvakare.
3. Yeuka kuisa ventilation drying equipment muchoto, zvikasadaro chiutsi chichagara muchoto uye kuwedzera hunyoro hwayo, izvo zvisina kunaka PCB dehumidification.
4. Kubva pakuona kwehutano, iyo yakanyanya kutsva PCB solder inoshandiswa, zviri nani hutano huchava. Kunyangwe iyo PCB yakapera ikashandiswa mushure mekubika, pachine imwe njodzi yemhando.
Zvinokurudzira zvePCB kubika
1. Inokurudzirwa kushandisa tembiricha ye105±5℃ kubika PCB. Nekuti pairi kufashaira yemvura i100℃, chero ikadarika painofashaira, mvura inozoita utsi. Nekuti PCB haina mamorekuru emvura akawandisa, haidi tembiricha yakawandisa kuti iwedzere chiyero chekupisa kwayo.
Kana tembiricha yakakwira zvakanyanya kana mwero wegasification uchimhanya zvakanyanya, zvinokonzeresa nyore kuti mhute yemvura iwedzere nekukurumidza, izvo zvisiri izvo zvakanaka kune kunaka. Kunyanya kumapuranga e-multilayer uye maPCB ane maburi akavigwa, 105 ° C inongova pamusoro pemvura inofashaira, uye tembiricha haizove yakanyanya kukwirira. , Inogona kuderedza humidity uye kuderedza njodzi ye oxidation. Uyezve, kugona kwevheni yazvino kudzora tembiricha yakavandudza zvakanyanya kupfuura kare.
2. Kana iyo PCB inoda kubikwa zvinoenderana nekuti kurongedza kwayo kwakanyorova here, ndiko kuti, kuona kana HIC (Humidity Indicator Card) iri muvacuum package yakaratidza hunyoro. Kana iyo yekurongedza yakanaka, HIC hairatidze kuti hunyoro huripo Unogona kuenda online usina kubheka.
3. Inokurudzirwa kushandisa "yakarurama" uye yakaparadzana kubika kana PCB ichibika, nokuti izvi zvinogona kuwana hukuru hwemhepo inopisa inopisa, uye unyoro huri nyore kubikwa kubva muPCB. Nekudaro, kune yakakura-saizi maPCB, zvingave zvakafanira kufunga kana iyo yakatwasuka mhando ichizokonzera kukotama uye deformation yebhodhi.
4. Mushure mokunge PCB yakabikwa, inokurudzirwa kuiisa panzvimbo yakaoma uye inobvumira kuti itonhorere nokukurumidza. Zviri nani kudzvanya "anti-bending fixture" pamusoro pebhodhi, nekuti chinhu chakajairika chiri nyore kutora mhute yemvura kubva kune yakanyanya kupisa mamiriro kune inotonhora maitiro. Nekudaro, kutonhora nekukurumidza kunogona kukonzera kubhenda kweplate, izvo zvinoda chiyero.
Zvakaipa zvePCB kubika uye zvinhu zvekufunga nezvazvo
1. Kubika kuchawedzera oxidation yePCB surface coating, uye iyo yakakwirira tembiricha, iyo yakareba kubheka, zvakanyanya kuipa.
2. Hazvikurudzirwi kubheka mabhodhi eOSP anobatwa pamusoro pepamusoro-soro, nokuti firimu yeOSP ichaderedza kana kukundikana nekuda kwekushisa kwepamusoro. Kana iwe uchifanira kubheka, zvinokurudzirwa kubika pakupisa kwe105 ± 5 ° C, kwete maawa maviri, uye zvinokurudzirwa kuishandisa mukati maawa makumi maviri nemana mushure mekubika.
3. Kubika kunogona kukanganisa kuumbwa kweIMC, kunyanya yeHASL (tin spray), ImSn (chemical tin, immersion tin plating) mabhodhi ekurapwa kwepamusoro, nokuti IMC layer (copper tin compound) ichangotanga sePCB. nhanho Generation, kureva kuti, yakagadzirwa pamberi pePCB solder, asi kubheka kuchawedzera ukobvu hweiyi layer yeIMC yakagadzirwa, zvichikonzera matambudziko ekuvimbika.