什(Shi)么(Me)是(Shi)盘(Pan)中(Zhong)孔(Kong)？(?)盘(Pan)中(Zhong)孔(Kong)塞(Sai)孔(Kong)工(Gong)艺(Yi)该(Gai)如(Ru)何(He)控(Kong)制(Zhi)？(?)

      简(Jian)而(?)言(Yan)之(Zhi)，(?)PCB上(Shang)的(De)压(Ya)在(Zai)焊(Han)盘(Pan)上(Shang)的(De)孔(Kong)都(Du)可(Ke)以(Yi)称(Cheng)之(Zhi)为(Wei)盘(Pan)中(Zhong)孔(Kong)。(?)一(Yi)般(Ban)来(Lai)说(Shuo)盘(Pan)中(Zhong)孔(Kong)的(De)直(Zhi)径(Jing)不(Bu)能(Neng)大(Da)于(Yu)0.5mm，(?)否(Fou)则(Ze)贴(Tie)片(Pian)时(Shi)锡(Xi)膏(Gao)会(Hui)流(Liu)入(Ru)孔(Kong)中(Zhong)，(?)

或(Huo)者(Zhe)助(Zhu)焊(Han)剂(Ji)流(Liu)入(Ru)孔(Kong)中(Zhong)加(Jia)热(Re)过(Guo)程(Cheng)中(Zhong)产(Chan)生(Sheng)气(Qi)体(Ti)，(?)导(Dao)致(Zhi)器(Qi)件(Jian)与(Yu)焊(Han)盘(Pan)的(De)连(Lian)接(Jie)强(Qiang)度(Du)不(Bu)够(Gou) 出(Chu)现(Xian)虚(Xu)焊(Han)现(Xian)象(Xiang)。(?)

      对(Dui)于(Yu)盘(Pan)中(Zhong)孔(Kong)塞(Sai)孔(Kong)最(Zui)难(Nan)控(Kong)制(Zhi)的(De)就(Jiu)是(Shi)孔(Kong)内(Nei)有(You)锡(Xi)珠(Zhu)或(Huo)油(You)墨(Mo)上(Shang)焊(Han)盘(Pan) , 也(Ye)就(Jiu)是(Shi)所(Suo)谓(Wei)的(De)爆(Bao)油(You)现(Xian)象(Xiang)我(Wo)们(Men)公(Gong)司(Si)有(You)些(Xie)客(Ke)户(Hu)对(Dui)阻(Zu)焊(Han)上(Shang)焊(Han)盘(Pan)及(Ji)外(Wai)观(Guan)要(Yao)求(Qiu)是(Shi)非(Fei)

常(Chang)严(Yan)格(Ge)的(De)，(?) 其(Qi)中(Zhong)生(Sheng)产(Chan)板(Ban)中(Zhong)就(Jiu)有(You)要(Yao)求(Qiu)盘(Pan)中(Zhong)孔(Kong)塞(Sai)孔(Kong) , 而(?)我(Wo)们(Men)在(Zai)此(Ci)之(Zhi)前(Qian)生(Sheng)产(Chan)此(Ci)板(Ban)时(Shi)最(Zui)难(Nan)控(Kong)制(Zhi)的(De)是(Shi)固(Gu)化(Hua)或(Huo)喷(Pen)锡(Xi)后(Hou)产(Chan)生(Sheng)的(De)爆(Bao)油(You)问(Wen)题(Ti)导(Dao)致(Zhi)阻(Zu)焊(Han)上(Shang)焊(Han)

盘(Pan)和(He)孔(Kong)内(Nei)锡(Xi)珠(Zhu)问(Wen)题(Ti)。(?)固(Gu)化(Hua)或(Huo)喷(Pen)锡(Xi)是(Shi)塞(Sai)孔(Kong)油(You)墨(Mo)溶(Rong)剂(Ji)挥(Hui)发(Fa)及(Ji)树(Shu)脂(Zhi)收(Shou)缩(Suo)的(De)一(Yi)个(Ge)过(Guo)程(Cheng) , 因(Yin)此(Ci)控(Kong)制(Zhi)不(Bu)当(Dang)也(Ye)就(Jiu)最(Zui)容(Rong)易(Yi)产(Chan)生(Sheng)孔(Kong)内(Nei)锡(Xi)珠(Zhu)或(Huo)爆(Bao)油(You)现(Xian)象(Xiang) .