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本(Ben)文(Wen)关(Guan)于(Yu)SMT贴(Tie)片(Pian)加(Jia)gong工(Gong)艺(Yi)检(Jian)验(Yan)标(Biao)准(Zhun),(?)以(Yi)下(Xia)是(Shi)详(Xiang)细(Xi)内(Nei)容(Rong):(?) (?) (?)一(Yi)、(?)SMT贴(Tie)片(Pian)锡(Xi)膏(Gao)工(Gong)艺(Yi) (?) (?)1.PCB板(Ban)上(Shang)印(Yin)刷(Shua)的(De)喷(Pen)锡(Xi)的(De)位(Wei)置(Zhi)与(Yu)焊(Han)盘(Pan)居(Ju)中(Zhong),(?)无(Wu)ming显(Xian)的(De)偏(Pian)移(Yi),(?)不(Bu)可(Ke)影(Ying)响(Xiang)SMT元(Yuan)件(Jian)粘(Zhan)贴(Tie)与(Yu)上(Shang)锡(Xi)效(Xiao)guo。(?) (?) (?)2.PCB板(Ban)上(Shang)印(Yin)刷(Shua)喷(Pen)锡(Xi)量(Liang)适(Shi)中(Zhong),(?)不(Bu)能(Neng)完(Wan)整(Zheng)的(De)覆(Fu)盖(Gai)焊(Han)盘(Pan),(?)少(Shao)锡(Xi)、(?)漏(Lou)刷(Shua)。(?) (?) (?)3.P…(?)…(?)
各(Ge)位(Wei)朋(Peng)友(You)们(Men)们(Men),(?)大(Da)家(Jia)上(Shang)午(Wu)好(Hao),(?)我(Wo)是(Shi)SMT贴(Tie)片(Pian)加(Jia)工(Gong)厂(Chang)的(De)小(Xiao)编(Bian),(?)记(Ji)得(De)上(Shang)次(Ci)和(He)各(Ge)位(Wei)朋(Peng)友(You)们(Men)们(Men)分(Fen)享(Xiang)了(Liao)SMT贴(Tie)片(Pian)加(Jia)工(Gong)和(He)插(Cha)件(Jian)后(Hou)焊(Han)加(Jia)工(Gong)的(De)区(Qu)别(Bie),(?)今(Jin)天(Tian)小(Xiao)编(Bian)要(Yao)和(He)各(Ge)位(Wei)朋(Peng)友(You)们(Men)们(Men)分(Fen)享(Xiang)的(De)是(Shi)SMT贴(Tie)片(Pian)加(Jia)工(Gong)的(De)未(Wei)来(Lai)发(Fa)展(Zhan)。(?) 据(Ju)相(Xiang)关(Guan)报(Bao)道(Dao):(?)当(Dang)今(Jin)主(Zhu)流(Liu)的(De)手(Shou)机(Ji)芯(Xin)片(Pian)和(He)某(Mou)些(Xie)中(Zhong)端(Duan)芯(Xin)片(Pian)采(Cai)用(Yong)某(Mou)品(Pin)牌(Pai)第(Di)二(?)代(Dai)14nm工(Gong)艺(Yi)或(Huo)台(Tai)积(Ji)电(Dian)16nm工(Gong)艺(Yi)。(?)也(Ye)许(Xu)朋(Peng)友(You)会(Hui)认(Ren)为(Wei)今(Jin)天(Tian)这(Zhe)样(Yang)的(De)过(Guo)程(Cheng)仍(Reng)然(Ran)非(Fei)常(Chang)先(Xian)进(Jin)。(?)…(?)…(?)
很(Hen)多(Duo)同(Tong)学(Xue)问(Wen)是(Shi)不(Bu)是(Shi)能(Neng)增(Zeng)加(Jia)某(Mou)些(Xie)实(Shi)际(Ji)的(De)案(An)例(Li),(?)无(Wu)论(Lun)是(Shi)产(Chan)品(Pin)成(Cheng)本(Ben)计(Ji)算(Suan)或(Huo)是(Shi)自(Zi)制(Zhi)外(Wai)购(Gou)分(Fen)析(Xi),(?)以(Yi)及(Ji)项(Xiang)目(Mu)财(Cai)务(Wu)指(Zhi)标(Biao)计(Ji)算(Suan)等(Deng)。(?)作(Zuo)为(Wei)一(Yi)个(Ge)动(Dong)能(Neng)满(Man)满(Man)的(De)团(Tuan)队(Dui),(?)我(Wo)们(Men)准(Zhun)备(Bei)朝(Chao)着(Zhuo)这(Zhe)个(Ge)方(Fang)位(Wei)去(Qu)趟(Tang)趟(Tang)路(Lu),(?)希(Xi)望(Wang)大(Da)家(Jia)给(Gei)点(Dian)建(Jian)议(Yi)。(?)本(Ben)次(Ci)SMT加(Jia)工(Gong)的(De)案(An)例(Li)是(Shi)一(Yi)个(Ge)开(Kai)始(Shi),(?)供(Gong)大(Da)家(Jia)学(Xue)习(Xi)。(?) 一(Yi)、(?)车(Che)间(Jian)及(Ji)环(Huan)境(Jing) 无(Wu)尘(Chen)车(Che)间(Jian)约(Yue)310平(Ping)方(Fang)米(Mi),(?)附(Fu)带(Dai)中(Zhong)央(Yang)空(Kong)调(Diao)。(?)车(Che)间(Jian)已(Yi)装(Zhuang)修(Xiu)完(Wan)毕(Bi),(?)不(Bu)用(Yong)承(Cheng)担(Dan)装(Zhuang)修(Xiu)费(Fei)…(?)…(?)
SMT加(Jia)工(Gong)厂(Chang)多(Duo)如(Ru)牛(Niu)毛(Mao),(?)很(Hen)多(Duo)中(Zhong)大(Da)型(Xing)公(Gong)司(Si)为(Wei)了(Liao)配(Pei)合(He)产(Chan)品(Pin)需(Xu)要(Yao),(?)也(Ye)已(Yi)然(Ran)上(Shang)线(Xian)SMT生(Sheng)产(Chan)线(Xian)。(?)在(Zai)众(Zhong)多(Duo)的(De)SMT加(Jia)工(Gong)厂(Chang)中(Zhong),(?)怎(Zen)样(Yang)选(Xuan)定(Ding)一(Yi)家(Jia)值(Zhi)得(De)信(Xin)赖(Lai)的(De)供(Gong)应(Ying)商(Shang)呢(Ne)?(?)本(Ben)文(Wen)从(Cong)专(Zhuan)业(Ye)人(Ren)士(Shi)角(Jiao)度(Du)建(Jian)议(Yi)从(Cong)如(Ru)下(Xia)几(Ji)个(Ge)角(Jiao)度(Du)进(Jin)行(Xing)筛(Shai)选(Xuan),(?)让(Rang)您(Nin)挑(Tiao)选(Xuan)更(Geng)好(Hao)的(De)产(Chan)品(Pin):(?) smt加(Jia)工(Gong)厂(Chang) 1、(?)专(Zhuan)业(Ye)的(De)配(Pei)合(He)度(Du)((?)ConceptofCooperation)(?) SMT加(Jia)工(Gong)作(Zuo)为(Wei)电(Dian)子(Zi)产(Chan)品(Pin)全(Quan)过(Guo)程(Cheng)的(De)一(Yi)部(Bu)分(Fen),(?)如(Ru)果(Guo)机(Ji)器(Qi)设(She)备(Bei)高(Gao)度(Du)发(Fa)达(Da)、(?)管(Guan)理(Li)完(Wan)善(Shan),(?)SMT加(Jia)工(Gong)厂(Chang)的(De)专(Zhuan)业(Ye)合(He)作(Zuo)水(Shui)平(Ping)将(Jiang)决(Jue)定(Ding)你(Ni)的(De)PCBA板(Ban)是(Shi)否(Fou)能(Neng)按(An)时(Shi)交(Jiao)货(Huo)、(?)质(Zhi)量(Liang)是(Shi)否(Fou)能(Neng)够(Gou)控(Kong)制(Zhi)、(?)是(Shi)否(Fou)能(Neng)够(Gou)立(Li)即(Ji)修(Xiu)理(Li),(?)这(Zhe)种(Zhong)附(Fu)加(Jia)价(Jia)值(Zhi)可(Ke)以(Yi)表(Biao)示(Shi)8厘(Li)米(Mi)和(He)9厘(Li)米(Mi)之(Zhi)间(Jian)
6.扫(Sao)描(Miao)电(Dian)子(Zi)显(Xian)微(Wei)镜(Jing)分(Fen)析(Xi) 扫(Sao)描(Miao)电(Dian)子(Zi)显(Xian)微(Wei)镜(Jing)((?)SEM)(?)是(Shi)用(Yong)于(Yu)故(Gu)障(Zhang)分(Fen)析(Xi)的(De)最(Zui)有(You)用(Yong)的(De)大(Da)型(Xing)电(Dian)子(Zi)显(Xian)微(Wei)镜(Jing)成(Cheng)像(Xiang)系(Xi)统(Tong)之(Zhi)一(Yi)。(?) 其(Qi)工(Gong)作(Zuo)原(Yuan)理(Li)是(Shi)利(Li)用(Yong)阴(Yin)极(Ji)发(Fa)射(She)的(De)电(Dian)子(Zi)束(Shu)加(Jia)速(Su)通(Tong)过(Guo)阳(Yang)极(Ji),(?)并(Bing)在(Zai)磁(Ci)透(Tou)镜(Jing)聚(Ju)焦(Jiao)后(Hou),(?)形(Xing)成(Cheng)直(Zhi)径(Jing)为(Wei)几(Ji)十(Shi)至(Zhi)几(Ji)千(Qian)埃(Ai)((?)A)(?)的(De)电(Dian)子(Zi)束(Shu)。(?) 在(Zai)扫(Sao)描(Miao)线(Xian)圈(Quan)的(De)偏(Pian)转(Zhuan)下(Xia),(?)电(Dian)子(Zi)束(Shu)以(Yi)一(Yi)定(Ding)的(De)时(Shi)间(Jian)和(He)空(Kong)间(Jian)顺(Shun)序(Xu)在(Zai)样(Yang)品(Pin)表(Biao)面(Mian)上(Shang)执(Zhi)行(Xing)逐(Zhu)点(Dian)扫(Sao)描(Miao)运(Yun)动(Dong)。(?) 这(Zhe)种(Zhong)高(Gao)能(Neng)电(Dian)子(Zi)束(Shu)在(Zai)样(Yang)品(Pin)表(Biao)面(Mian)上(Shang)的(De)…(?)…(?)
作(Zuo)为(Wei)各(Ge)种(Zhong)组(Zu)件(Jian)的(De)载(Zai)体(Ti)和(He)电(Dian)路(Lu)信(Xin)号(Hao)传(Chuan)输(Shu)的(De)枢(Shu)纽(Niu),(?)PCB已(Yi)成(Cheng)为(Wei)电(Dian)子(Zi)信(Xin)息(Xi)产(Chan)品(Pin)最(Zui)重(Zhong)要(Yao)和(He)至(Zhi)关(Guan)重(Zhong)要(Yao)的(De)部(Bu)分(Fen)。(?) PCB的(De)质(Zhi)量(Liang)和(He)可(Ke)靠(Kao)性(Xing)决(Jue)定(Ding)了(Liao)整(Zheng)个(Ge)设(She)备(Bei)的(De)质(Zhi)量(Liang)和(He)可(Ke)靠(Kao)性(Xing)。(?) 但(Dan)是(Shi),(?)由(You)于(Yu)成(Cheng)本(Ben)和(He)技(Ji)术(Shu)原(Yuan)因(Yin),(?)在(Zai)PCB的(De)生(Sheng)产(Chan)和(He)应(Ying)用(Yong)过(Guo)程(Cheng)中(Zhong)发(Fa)生(Sheng)了(Liao)大(Da)量(Liang)故(Gu)障(Zhang)。(?) 对(Dui)于(Yu)这(Zhe)种(Zhong)故(Gu)障(Zhang)问(Wen)题(Ti),(?)我(Wo)们(Men)需(Xu)要(Yao)使(Shi)用(Yong)一(Yi)些(Xie)常(Chang)见(Jian)的(De)故(Gu)障(Zhang)分(Fen)析(Xi)技(Ji)术(Shu)来(Lai)确(Que)保(Bao)制(Zhi)造(Zao)过(Guo)程(Cheng)中(Zhong)PCB的(De)质(Zhi)量(Liang)和(He)可(Ke)靠(Kao)性(Xing)水(Shui)平(Ping)。(?) 总(Zong)结(Jie)了(Liao)…(?)…(?)
在(Zai)生(Sheng)活(Huo)中(Zhong),(?)哪(Na)些(Xie)产(Chan)品(Pin)需(Xu)要(Yao)使(Shi)用(Yong)PCB电(Dian)路(Lu)板(Ban)?(?)pcb板(Ban)设(She)计(Ji)是(Shi)怎(Zen)么(Me)样(Yang)的(De)呢(Ne)?(?) 首(Shou)先(Xian),(?)需(Xu)要(Yao)集(Ji)成(Cheng)电(Dian)路(Lu)的(De)电(Dian)子(Zi)产(Chan)品(Pin):(?) 这(Zhe)些(Xie)电(Dian)子(Zi)产(Chan)品(Pin)旨(Zhi)在(Zai)节(Jie)省(Sheng)空(Kong)间(Jian),(?)并(Bing)使(Shi)产(Chan)品(Pin)更(Geng)轻(Qing),(?)更(Geng)紧(Jin)凑(?)。(?) 耐(Nai)用(Yong)且(Qie)要(Yao)获(Huo)得(De)良(Liang)好(Hao)的(De)性(Xing)能(Neng),(?)必(Bi)须(Xu)取(Qu)消(Xiao)以(Yi)前(Qian)的(De)电(Dian)线(Xian)连(Lian)接(Jie),(?)并(Bing)切(Qie)换(Huan)到(Dao)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)。(?) PCB符(Fu)合(He)空(Kong)间(Jian),(?)性(Xing)能(Neng)和(He)可(Ke)靠(Kao)性(Xing)的(De)要(Yao)求(Qiu)。(?) 并(Bing)非(Fei)每(Mei)个(Ge)电(Dian)器(Qi)都(Du)需(Xu)要(Yao)电(Dian)路(Lu)板(Ban),(?)简(Jian)单(Dan)的(De)电(Dian)器(Qi)可(Ke)能(Neng)不(Bu)需(Xu)…(?)…(?)
pcb板(Ban)设(She)计(Ji)的(De)一(Yi)般(Ban)过(Guo)程(Cheng): 第(Di)一(Yi)阶(Jie)段(Duan):方(Fang)案(An)设(She)计(Ji): 在(Zai)这(Zhe)一(Yi)阶(Jie)段(Duan),(?)工(Gong)程(Cheng)师(Shi)通(Tong)常(Chang)会(Hui)根(Gen)据(Ju)电(Dian)路(Lu)现(Xian)场(Chang)的(De)情(Qing)况(Kuang)、(?)市(Shi)场(Chang)调(Diao)研(Yan)或(Huo)产(Chan)品(Pin)的(De)创(Chuang)新(Xin)需(Xu)求(Qiu),(?)规(Gui)划(Hua)出(Chu)电(Dian)路(Lu)的(De)基(Ji)本(Ben)模(Mo)块(Kuai),(?)并(Bing)绘(Hui)制(Zhi)出(Chu)产(Chan)品(Pin)的(De)电(Dian)路(Lu)图(Tu)。(?)这(Zhe)个(Ge)阶(Jie)段(Duan)可(Ke)以(Yi)在(Zai)没(Mei)有(You)altium设(She)计(Ji)软(Ruan)件(Jian)的(De)情(Qing)况(Kuang)下(Xia)完(Wan)成(Cheng)。(?)手(Shou)稿(Gao)或(Huo)其(Qi)他(Ta)办(Ban)公(Gong)软(Ruan)件(Jian)一(Yi)般(Ban)能(Neng)满(Man)足(Zu)要(Yao)求(Qiu)。(?)以(Yi)下(Xia)阶(Jie)段(Duan)需(Xu)要(Yao)应(Ying)用(Yong)于(Yu)altium设(She)计(Ji)软(Ruan)件(Jian)。(?) 第(Di)二(?)阶(Jie)段(Duan):原(Yuan)理(Li)图(Tu)设(She)计(Ji):在(Zai)此(Ci)阶(Jie)段(Duan),(?)根(Gen)据(Ju)产(Chan)品(Pin)电(Dian)路(Lu)框(Kuang)架(Jia)图(Tu)绘(Hui)制(Zhi)具(Ju)体(Ti)原(Yuan)理(Li)图(Tu),(?)使(Shi)电(Dian)路(Lu)系(Xi)统(Tong)具(Ju)体(Ti)化(Hua)。(?)这(Zhe)一(Yi)阶(Jie)段(Duan)的(De)设(She)计(Ji)将(Jiang)决(Jue)定(Ding)电(Dian)路(Lu)结(Jie)构(Gou)和(He)pcb板(Ban)设(She)计(Ji)布(Bu)线(Xian)规(Gui)模(Mo)。(?) 第(Di)三(San)阶(Jie)段(Duan):将(Jiang)元(Yuan)件(Jian)网(Wang)络(Luo)表(Biao)信(Xin)息(Xi)导(Dao)出(Chu)到(Dao)pcb板(Ban)设(She)计(Ji):绘(Hui)制(Zhi)
我(Wo)相(Xiang)信(Xin)很(Hen)多(Duo)人(Ren)对(Dui)pcb板(Ban)设(She)计(Ji)很(Hen)熟(Shu)悉(Xi),(?)在(Zai)日(Ri)常(Chang)生(Sheng)活(Huo)中(Zhong)可(Ke)能(Neng)经(Jing)常(Chang)听(Ting)到(Dao),(?)但(Dan)他(Ta)们(Men)可(Ke)能(Neng)对(Dui)PCBA了(Liao)解(Jie)不(Bu)多(Duo),(?)甚(Shen)至(Zhi)会(Hui)把(Ba)它(Ta)和(He)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)混(Hun)淆(Xiao)。(?)那(Na)么(Me)什(Shi)么(Me)是(Shi)pcb板(Ban)设(She)计(Ji)呢(Ne)?(?)PCBA是(Shi)如(Ru)何(He)演(Yan)变(Bian)的(De)?(?)和(He)PCBA有(You)什(Shi)么(Me)不(Bu)同(Tong)?(?)让(Rang)我(Wo)们(Men)仔(Zi)细(Xi)看(Kan)看(Kan)。(?) *关(Guan)于(Yu)pcb板(Ban)设(She)计(Ji)* 因(Yin)为(Wei)它(Ta)是(Shi)由(You)电(Dian)子(Zi)印(Yin)刷(Shua)制(Zhi)成(Cheng)的(De),(?)所(Suo)以(Yi)被(Bei)称(Cheng)为(Wei)“(?)印(Yin)刷(Shua)”(?)电(Dian)路(Lu)板(Ban)。(?)pcb板(Ban)是(Shi)电(Dian)子(Zi)工(Gong)业(Ye)中(Zhong)…(?)…(?)
pcb板(Ban)设(She)计(Ji)的(De)主(Zhu)要(Yao)趋(Qu)势(Shi)之(Zhi)一(Yi)是(Shi)逐(Zhu)渐(Jian)向(Xiang)开(Kai)源(Yuan)硬(Ying)件(Jian)模(Mo)型(Xing)和(He)控(Kong)制(Zhi)系(Xi)统(Tong)发(Fa)展(Zhan)。(?)另(Ling)一(Yi)个(Ge)主(Zhu)要(Yao)趋(Qu)势(Shi)是(Shi)开(Kai)发(Fa)板(Ban)的(De)爆(Bao)炸(Zha)性(Xing)增(Zeng)长(Chang)。(?)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)设(She)计(Ji)工(Gong)具(Ju)正(Zheng)被(Bei)应(Ying)用(Yong)到(Dao)越(Yue)来(Lai)越(Yue)多(Duo)的(De)开(Kai)发(Fa)板(Ban)设(She)计(Ji)中(Zhong)。(?)这(Zhe)篇(Pian)文(Wen)章(Zhang)将(Jiang)告(Gao)诉(Su)你(Ni)在(Zai)过(Guo)去(Qu)的(De)25年(Nian)里(Li),(?)该(Gai)行(Xing)业(Ye)是(Shi)如(Ru)何(He)实(Shi)现(Xian)低(Di)成(Cheng)本(Ben)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)设(She)计(Ji)和(He)布(Bu)局(Ju)的(De)。(?) 随(Sui)着(Zhuo)pcb板(Ban)设(She)计(Ji)越(Yue)来(Lai)越(Yue)常(Chang)用(Yong)于(Yu)现(Xian)有(You)的(De)开(Kai)发(Fa)板(Ban),(?)而(?)子(Zi)板(Ban)被(Bei)用(Yong)于(Yu)驱(Qu)动(Dong)液(Ye)压(Ya)装(Zhuang)置(Zhi)和(He)伺(Si)服(Fu)马(Ma)达(Da)或(Huo)根(Gen)据(Ju)光(Guang)、(?)运(Yun)动(Dong)和(He)声(Sheng)音(Yin)执(Zhi)行(Xing)任(Ren)务(Wu),(?)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)设(She)计(Ji)趋(Qu)势(Shi)逐(Zhu)渐(Jian)趋(Qu)向(Xiang)于(Yu)开(Kai)源(Yuan)硬(Ying)件(Jian)模(Mo)式(Shi)和(He)控(Kong)制(Zhi)系(Xi)统(Tong)。(?) pcb板(Ban)设(She)计(Ji)的(De)另(Ling)一(Yi)个(Ge)主(Zhu)要(Yao)趋(Qu)势(Shi)是(Shi)开(Kai)发(Fa)板(Ban)的(De)爆(Bao)炸(Zha)性(Xing)增(Zeng)长(Chang)。(?)2013年(Nian)10月(Yue),(?)对(Dui)世(Shi)界(Jie)各(Ge)地(Di)的(De)pcb板(Ban)设(She)计(Ji)师(Shi)进(Jin)行(Xing)了(Liao)一(Yi)项(Xiang)调(Diao)
尽(Jin)管(Guan)半(Ban)导(Dao)体(Ti)集(Ji)成(Cheng)度(Du)越(Yue)来(Lai)越(Yue)高(Gao),(?)许(Xu)多(Duo)应(Ying)用(Yong)也(Ye)随(Sui)时(Shi)可(Ke)以(Yi)获(Huo)得(De)片(Pian)内(Nei)系(Xi)统(Tong),(?)许(Xu)多(Duo)功(Gong)能(Neng)强(Qiang)大(Da)的(De)现(Xian)成(Cheng)开(Kai)发(Fa)板(Ban)也(Ye)变(Bian)得(De)越(Yue)来(Lai)越(Yue)容(Rong)易(Yi)获(Huo)得(De),(?)但(Dan)在(Zai)许(Xu)多(Duo)用(Yong)例(Li)中(Zhong),(?)电(Dian)子(Zi)产(Chan)品(Pin)的(De)应(Ying)用(Yong)仍(Reng)然(Ran)需(Xu)要(Yao)定(Ding)制(Zhi)的(De)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban) 在(Zai)一(Yi)次(Ci)性(Xing)开(Kai)发(Fa)中(Zhong),(?)即(Ji)使(Shi)是(Shi)普(Pu)通(Tong)的(De)印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)也(Ye)可(Ke)以(Yi)发(Fa)挥(Hui)非(Fei)常(Chang)重(Zhong)要(Yao)的(De)作(Zuo)用(Yong)。(?) 印(Yin)刷(Shua)电(Dian)路(Lu)板(Ban)是(Shi)设(She)计(Ji)的(De)物(Wu)理(Li)平(Ping)台(Tai),(?)也(Ye)是(Shi)原(Yuan)始(Shi)元(Yuan)件(Jian)电(Dian)子(Zi)系(Xi)统(Tong)设(She)计(Ji)中(Zhong)最(Zui)灵(Ling)活(Huo)的(De)元(Yuan)件(Jian)。(?)本(Ben)文(Wen)将(Jiang)介(Jie)绍(Shao)pcb板(Ban)设(She)计(Ji)的(De)几(Ji)…(?)…(?)
一(Yi)、(?)焊(Han)盘(Pan)重(Zhong)叠(Die) 1.焊(Han)盘(Pan)的(De)重(Zhong)叠(Die)(表(Biao)面(Mian)焊(Han)盘(Pan)除(Chu)外(Wai))意(Yi)味(Wei)着(Zhuo)孔(Kong)的(De)重(Zhong)叠(Die),(?)这(Zhe)将(Jiang)由(You)于(Yu)钻(Zuan)孔(Kong)过(Guo)程(Cheng)中(Zhong)在(Zai)一(Yi)个(Ge)位(Wei)置(Zhi)多(Duo)次(Ci)钻(Zuan)孔(Kong)而(?)导(Dao)致(Zhi)钻(Zuan)头(Tou)破(Po)损(Sun)和(He)孔(Kong)损(Sun)坏(Huai)。(?) 2.多(Duo)层(Ceng)板(Ban)上(Shang)的(De)两(Liang)个(Ge)孔(Kong)重(Zhong)叠(Die)。(?)例(Li)如(Ru),(?)一(Yi)个(Ge)孔(Kong)位(Wei)是(Shi)隔(Ge)离(Li)板(Ban),(?)另(Ling)一(Yi)个(Ge)孔(Kong)位(Wei)是(Shi)连(Lian)接(Jie)板(Ban)(花(Hua)坛(Tan))。(?)因(Yin)此(Ci),(?)在(Zai)底(Di)片(Pian)被(Bei)拉(La)伸(Shen)后(Hou),(?)它(Ta)将(Jiang)作(Zuo)为(Wei)隔(Ge)离(Li)板(Ban)出(Chu)现(Xian),(?)导(Dao)致(Zhi)报(Bao)废(Fei)。(?) 第(Di)二(?),(?)图(Tu)形(Xing)层(Ceng)的(De)滥(Lan)用(Yong) 1.一(Yi)些(Xie)无(Wu)用(Yong)的(De)连(Lian)接(Jie)已(Yi)经(Jing)…(?)…(?)
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