深圳SMT貼片加工打樣
SMT工(gong)藝(yi)主要(yao)包括錫(xi)膏(gao)(gao)印(yin)刷、貼(tie)(tie)(tie)(tie)片、回(hui)(hui)流(liu)焊(han)(han)(han)(han)等環節(jie)(jie),每個環節(jie)(jie)都對(dui)終產品的(de)(de)(de)(de)質量(liang)和(he)(he)性(xing)(xing)(xing)能(neng)產生重(zhong)要(yao)影響(xiang)。錫(xi)膏(gao)(gao)印(yin)刷是(shi)SMT工(gong)藝(yi)的(de)(de)(de)(de)首步,負(fu)責將錫(xi)膏(gao)(gao)精(jing)確地印(yin)刷到PCB的(de)(de)(de)(de)焊(han)(han)(han)(han)盤(pan)上。錫(xi)膏(gao)(gao)印(yin)刷的(de)(de)(de)(de)質量(liang)直接(jie)影響(xiang)到后續貼(tie)(tie)(tie)(tie)片和(he)(he)回(hui)(hui)流(liu)焊(han)(han)(han)(han)的(de)(de)(de)(de)效(xiao)(xiao)果,因(yin)此需要(yao)嚴格控制錫(xi)膏(gao)(gao)的(de)(de)(de)(de)質量(liang)、印(yin)刷厚度、精(jing)度等參(can)數。在(zai)錫(xi)膏(gao)(gao)印(yin)刷過程(cheng)中(zhong),應選(xuan)擇合適的(de)(de)(de)(de)印(yin)刷設備(bei)、鋼網和(he)(he)刮刀(dao),以保證(zheng)印(yin)刷效(xiao)(xiao)果的(de)(de)(de)(de)穩定(ding)性(xing)(xing)(xing)和(he)(he)可靠性(xing)(xing)(xing)。貼(tie)(tie)(tie)(tie)片是(shi)SMT工(gong)藝(yi)中(zhong)將元(yuan)器(qi)(qi)件(jian)(jian)貼(tie)(tie)(tie)(tie)裝(zhuang)到PCB上的(de)(de)(de)(de)過程(cheng)。貼(tie)(tie)(tie)(tie)片過程(cheng)中(zhong)需要(yao)注(zhu)意元(yuan)器(qi)(qi)件(jian)(jian)的(de)(de)(de)(de)取料、定(ding)位和(he)(he)貼(tie)(tie)(tie)(tie)裝(zhuang)等環節(jie)(jie),確保元(yuan)器(qi)(qi)件(jian)(jian)正確地貼(tie)(tie)(tie)(tie)裝(zhuang)到預定(ding)位置。貼(tie)(tie)(tie)(tie)片機的(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)、精(jing)度和(he)(he)穩定(ding)性(xing)(xing)(xing)對(dui)貼(tie)(tie)(tie)(tie)片效(xiao)(xiao)果有(you)很大(da)影響(xiang),因(yin)此選(xuan)擇合適的(de)(de)(de)(de)貼(tie)(tie)(tie)(tie)片機和(he)(he)優化貼(tie)(tie)(tie)(tie)片參(can)數至(zhi)關重(zhong)要(yao)。回(hui)(hui)流(liu)焊(han)(han)(han)(han)是(shi)SMT工(gong)藝(yi)中(zhong)將錫(xi)膏(gao)(gao)熔(rong)化并(bing)使元(yuan)器(qi)(qi)件(jian)(jian)與(yu)PCB焊(han)(han)(han)(han)盤(pan)連接(jie)的(de)(de)(de)(de)過程(cheng)。回(hui)(hui)流(liu)焊(han)(han)(han)(han)過程(cheng)中(zhong),需要(yao)控制加熱速(su)率(lv)、溫度曲線(xian)和(he)(he)冷卻速(su)率(lv)等參(can)數,以保證(zheng)焊(han)(han)(han)(han)點(dian)的(de)(de)(de)(de)質量(liang)和(he)(he)可靠性(xing)(xing)(xing)。回(hui)(hui)流(liu)焊(han)(han)(han)(han)設備(bei)的(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)、穩定(ding)性(xing)(xing)(xing)和(he)(he)溫度控制能(neng)力對(dui)回(hui)(hui)流(liu)焊(han)(han)(han)(han)效(xiao)(xiao)果至(zhi)關重(zhong)要(yao)。在(zai)實際操作(zuo)中(zhong),應根據元(yuan)器(qi)(qi)件(jian)(jian)和(he)(he)PCB的(de)(de)(de)(de)特性(xing)(xing)(xing),選(xuan)擇合適的(de)(de)(de)(de)回(hui)(hui)流(liu)焊(han)(han)(han)(han)設備(bei)和(he)(he)工(gong)藝(yi)參(can)數。SMT基本工(gong)藝(yi)的(de)(de)(de)(de)要(yao)素介紹。深圳SMT貼(tie)(tie)(tie)(tie)片加工(gong)打樣(yang)
SMT貼(tie)(tie)片(pian)的(de)(de)(de)具(ju)體(ti)流(liu)程是(shi)(shi)(shi)怎(zen)樣的(de)(de)(de)?SMT貼(tie)(tie)片(pian)的(de)(de)(de)基本工(gong)藝組(zu)成要素:絲印(yin)(yin),檢(jian)(jian)(jian)測,貼(tie)(tie)裝(zhuang)(zhuang),回(hui)流(liu)焊(han)(han)(han)接(jie),清潔,檢(jian)(jian)(jian)測,返修。1、絲印(yin)(yin):將(jiang)錫(xi)膏(gao)(gao)或貼(tie)(tie)片(pian)膠印(yin)(yin)在電路(lu)板的(de)(de)(de)焊(han)(han)(han)盤(pan)上,為元件(jian)(jian)的(de)(de)(de)焊(han)(han)(han)接(jie)作(zuo)準備(bei)。使(shi)用(yong)(yong)的(de)(de)(de)設(she)(she)備(bei)是(shi)(shi)(shi)位(wei)(wei)于SMT生(sheng)產(chan)線(xian)(xian)前(qian)端的(de)(de)(de)(鋼(gang)網印(yin)(yin)刷(shua)(shua)機(ji))。2、檢(jian)(jian)(jian)測:檢(jian)(jian)(jian)驗印(yin)(yin)刷(shua)(shua)機(ji)上錫(xi)膏(gao)(gao)印(yin)(yin)刷(shua)(shua)的(de)(de)(de)質(zhi)量,檢(jian)(jian)(jian)查(cha)(cha)PCB板上印(yin)(yin)刷(shua)(shua)的(de)(de)(de)錫(xi)量及錫(xi)膏(gao)(gao)的(de)(de)(de)位(wei)(wei)置,檢(jian)(jian)(jian)查(cha)(cha)錫(xi)膏(gao)(gao)印(yin)(yin)刷(shua)(shua)的(de)(de)(de)平(ping)整度及厚(hou)度,檢(jian)(jian)(jian)查(cha)(cha)錫(xi)膏(gao)(gao)印(yin)(yin)刷(shua)(shua)是(shi)(shi)(shi)否(fou)有偏(pian)移,印(yin)(yin)刷(shua)(shua)機(ji)上錫(xi)膏(gao)(gao)鋼(gang)網脫模是(shi)(shi)(shi)否(fou)有拉尖現象等,使(shi)用(yong)(yong)的(de)(de)(de)設(she)(she)備(bei)是(shi)(shi)(shi)(SPI)錫(xi)膏(gao)(gao)測厚(hou)儀。擴展閱讀:什么是(shi)(shi)(shi)SPI?什么是(shi)(shi)(shi)SPI檢(jian)(jian)(jian)測呢?如(ru)何(he)使(shi)用(yong)(yong)SPI檢(jian)(jian)(jian)測設(she)(she)備(bei)?3、貼(tie)(tie)裝(zhuang)(zhuang):其(qi)作(zuo)用(yong)(yong)是(shi)(shi)(shi)將(jiang)表面裝(zhuang)(zhuang)配部件(jian)(jian)精(jing)確(que)地(di)(di)裝(zhuang)(zhuang)配到PCB的(de)(de)(de)固(gu)定位(wei)(wei)置。使(shi)用(yong)(yong)的(de)(de)(de)設(she)(she)備(bei)是(shi)(shi)(shi)SMT流(liu)水線(xian)(xian)絲印(yin)(yin)機(ji)后面的(de)(de)(de)一臺貼(tie)(tie)片(pian)機(ji)。4、回(hui)流(liu)焊(han)(han)(han)接(jie):其(qi)作(zuo)用(yong)(yong)是(shi)(shi)(shi)熔(rong)融焊(han)(han)(han)膏(gao)(gao),使(shi)表面裝(zhuang)(zhuang)配部件(jian)(jian)與PCB板緊密地(di)(di)粘合(he)在一起。使(shi)用(yong)(yong)的(de)(de)(de)設(she)(she)備(bei)為SMT生(sheng)產(chan)線(xian)(xian)上,貼(tie)(tie)片(pian)機(ji)后面的(de)(de)(de)回(hui)流(liu)焊(han)(han)(han)爐。5、清潔:其(qi)作(zuo)用(yong)(yong)是(shi)(shi)(shi)清理組(zu)裝(zhuang)(zhuang)好的(de)(de)(de)PCB板上對(dui)人(ren)體(ti)有害的(de)(de)(de)焊(han)(han)(han)接(jie)殘余,例如(ru)焊(han)(han)(han)劑等。使(shi)用(yong)(yong)的(de)(de)(de)設(she)(she)備(bei)為清潔機(ji),位(wei)(wei)置可(ke)不固(gu)定,可(ke)在線(xian)(xian)或不在線(xian)(xian)。6、檢(jian)(jian)(jian)測:其(qi)作(zuo)用(yong)(yong)是(shi)(shi)(shi)檢(jian)(jian)(jian)驗組(zu)裝(zhuang)(zhuang)PCB板的(de)(de)(de)焊(han)(han)(han)接(jie)質(zhi)量和裝(zhuang)(zhuang)配質(zhi)量。湖南電路(lu)板SMT貼(tie)(tie)片(pian)廠SMT貼(tie)(tie)片(pian)的(de)(de)(de)具(ju)體(ti)流(liu)程是(shi)(shi)(shi)怎(zen)樣的(de)(de)(de)?
SMT貼(tie)片指的(de)(de)是(shi)在PCB基(ji)礎上(shang)進行加(jia)工(gong)的(de)(de)系列工(gong)藝(yi)(yi)流程的(de)(de)簡(jian)稱(cheng),PCB(PrintedCircuitBoard)為印刷(shua)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)。SMT是(shi)表面組裝(zhuang)(zhuang)技術(shu)(表面貼(tie)裝(zhuang)(zhuang)技術(shu))(SurfaceMountedTechnology的(de)(de)縮寫),是(shi)電(dian)(dian)(dian)(dian)子(zi)(zi)組裝(zhuang)(zhuang)行業里當下(xia)流行的(de)(de)一種(zhong)(zhong)(zhong)技術(shu)和工(gong)藝(yi)(yi)。在通常情況下(xia)我們用的(de)(de)電(dian)(dian)(dian)(dian)子(zi)(zi)產品(pin)都(dou)是(shi)由(you)pcb加(jia)上(shang)各種(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)容(rong),電(dian)(dian)(dian)(dian)阻等電(dian)(dian)(dian)(dian)子(zi)(zi)元器(qi)件(jian)按設計的(de)(de)電(dian)(dian)(dian)(dian)路(lu)圖設計而成的(de)(de),所以形形色的(de)(de)電(dian)(dian)(dian)(dian)器(qi)需要各種(zhong)(zhong)(zhong)不同的(de)(de)smt貼(tie)片加(jia)工(gong)工(gong)藝(yi)(yi)來加(jia)工(gong)。1943年,美國人多將該技術(shu)運(yun)用于(yu)收音機,1948年,美國正式(shi)認(ren)可(ke)此發明可(ke)用于(yu)商業用途。自20世(shi)紀50年代中(zhong)期起,印刷(shua)線路(lu)板(ban)(ban)才開始被廣運(yun)用。印刷(shua)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)幾乎會出現在每(mei)一種(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)子(zi)(zi)設備當中(zhong)。如(ru)果在某樣設備中(zhong)有電(dian)(dian)(dian)(dian)子(zi)(zi)零(ling)件(jian),那么它(ta)們也都(dou)是(shi)鑲在大小(xiao)各異的(de)(de)PCB上(shang)。PCB的(de)(de)主(zhu)要功能是(shi)使(shi)各種(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)子(zi)(zi)零(ling)組件(jian)形成預定電(dian)(dian)(dian)(dian)路(lu)的(de)(de)連(lian)接,起中(zhong)繼傳(chuan)輸的(de)(de)作用,是(shi)電(dian)(dian)(dian)(dian)子(zi)(zi)產品(pin)的(de)(de)關鍵電(dian)(dian)(dian)(dian)子(zi)(zi)互連(lian)件(jian),有“電(dian)(dian)(dian)(dian)子(zi)(zi)產品(pin)之母(mu)”之稱(cheng)。
SMT貼片(pian)(pian)加(jia)(jia)(jia)(jia)工(gong)(gong)對(dui)環境的(de)(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu)、濕(shi)(shi)(shi)(shi)度(du)(du)(du)(du)和溫度(du)(du)(du)(du)都是(shi)有一定(ding)的(de)(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu),為了保(bao)證電(dian)(dian)子(zi)元器(qi)件(jian)的(de)(de)(de)(de)質(zhi)量(liang),使(shi)得能(neng)提前完成加(jia)(jia)(jia)(jia)工(gong)(gong)數量(liang),對(dui)工(gong)(gong)作(zuo)環境有如下幾(ji)點要(yao)(yao)求(qiu)(qiu)(qiu):首(shou)先是(shi)溫度(du)(du)(du)(du)要(yao)(yao)求(qiu)(qiu)(qiu),廠房(fang)內(nei)常(chang)年溫度(du)(du)(du)(du)為23±3℃,不能(neng)超過極限溫度(du)(du)(du)(du)15~35℃其次是(shi)濕(shi)(shi)(shi)(shi)度(du)(du)(du)(du)要(yao)(yao)求(qiu)(qiu)(qiu),SMT貼片(pian)(pian)加(jia)(jia)(jia)(jia)工(gong)(gong)車間(jian)(jian)的(de)(de)(de)(de)濕(shi)(shi)(shi)(shi)度(du)(du)(du)(du)對(dui)產(chan)(chan)品(pin)的(de)(de)(de)(de)質(zhi)量(liang)有很大的(de)(de)(de)(de)影(ying)(ying)響(xiang),環境濕(shi)(shi)(shi)(shi)度(du)(du)(du)(du)越大,電(dian)(dian)子(zi)元器(qi)件(jian)就(jiu)容易(yi)受潮,就(jiu)影(ying)(ying)響(xiang)有導(dao)電(dian)(dian)性能(neng),焊接時(shi)(shi)不順暢,濕(shi)(shi)(shi)(shi)度(du)(du)(du)(du)太低(di),車間(jian)(jian)里的(de)(de)(de)(de)空氣就(jiu)容易(yi)干(gan)(gan)燥,很空易(yi)產(chan)(chan)生(sheng)(sheng)靜(jing)電(dian)(dian),所以在(zai)(zai)(zai)進入SMT貼片(pian)(pian)加(jia)(jia)(jia)(jia)工(gong)(gong)車間(jian)(jian)時(shi)(shi),加(jia)(jia)(jia)(jia)工(gong)(gong)人(ren)員(yuan)還需穿防靜(jing)電(dian)(dian)服。一般情況下要(yao)(yao)求(qiu)(qiu)(qiu)車間(jian)(jian)保(bao)持恒(heng)定(ding)濕(shi)(shi)(shi)(shi)度(du)(du)(du)(du)在(zai)(zai)(zai)45%~70%RH左右(you)。再者是(shi)清潔度(du)(du)(du)(du)的(de)(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu),要(yao)(yao)做到車間(jian)(jian)內(nei)無任何氣味(wei)、灰塵,保(bao)持內(nei)部的(de)(de)(de)(de)清潔干(gan)(gan)凈,無腐蝕性材料,它們將嚴重影(ying)(ying)響(xiang)電(dian)(dian)容電(dian)(dian)阻(zu)的(de)(de)(de)(de)可(ke)靠性,而(er)且會(hui)加(jia)(jia)(jia)(jia)大貼片(pian)(pian)加(jia)(jia)(jia)(jia)工(gong)(gong)設(she)備的(de)(de)(de)(de)故障(zhang)維修率,降低(di)生(sheng)(sheng)產(chan)(chan)進度(du)(du)(du)(du)。車間(jian)(jian)的(de)(de)(de)(de)清潔度(du)(du)(du)(du)在(zai)(zai)(zai)10萬級(BGJ73-84)左右(you)。是(shi)電(dian)(dian)源(yuan)的(de)(de)(de)(de)穩(wen)定(ding)性方面的(de)(de)(de)(de)要(yao)(yao)求(qiu)(qiu)(qiu),為了避(bi)免加(jia)(jia)(jia)(jia)工(gong)(gong)時(shi)(shi)設(she)備出現(xian)故障(zhang),影(ying)(ying)響(xiang)加(jia)(jia)(jia)(jia)工(gong)(gong)質(zhi)量(liang)及(ji)進度(du)(du)(du)(du),需在(zai)(zai)(zai)電(dian)(dian)源(yuan)上增加(jia)(jia)(jia)(jia)一項(xiang)穩(wen)壓器(qi)來保(bao)證電(dian)(dian)源(yuan)的(de)(de)(de)(de)穩(wen)定(ding)性。SMT制造:你(ni)需要(yao)(yao)知(zhi)道的(de)(de)(de)(de)一切。
SMT貼(tie)片機(ji)(ji)(ji)是(shi)多功(gong)能(neng)SMT機(ji)(ji)(ji),所以(yi)(yi)SMT機(ji)(ji)(ji)是(shi)用(yong)(yong)(yong)于生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)組(zu)(zu)件(jian)的(de)(de)全(quan)自(zi)動(dong)機(ji)(ji)(ji)器(qi),我(wo)們(men)可以(yi)(yi)在許(xu)多行業(ye)產(chan)(chan)(chan)(chan)(chan)(chan)品(pin)(pin)上使用(yong)(yong)(yong),它可以(yi)(yi)在哪(na)些行業(ye)中使用(yong)(yong)(yong)?讓我(wo)們(men)來(lai)(lai)看看。1.電(dian)(dian)子產(chan)(chan)(chan)(chan)(chan)(chan)品(pin)(pin):承(cheng)載了(le)21世紀的(de)(de)大(da)(da)部(bu)(bu)分用(yong)(yong)(yong)途(tu),是(shi)電(dian)(dian)子產(chan)(chan)(chan)(chan)(chan)(chan)品(pin)(pin),手機(ji)(ji)(ji),計算機(ji)(ji)(ji),筆(bi)記本(ben)電(dian)(dian)腦(nao),電(dian)(dian)子表(biao),運動(dong)手表(biao),由(you)板(ban)計算的(de)(de)內部(bu)(bu)信(xin)息,我(wo)們(men)通(tong)常將其稱為主板(ban)或PCB板(ban),使用(yong)(yong)(yong)多功(gong)能(neng)SMT貼(tie)片機(ji)(ji)(ji)來(lai)(lai)完成(cheng)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)任務,這不僅提高了(le)我(wo)們(men)SMT的(de)(de)效率,還降(jiang)低了(le)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)成(cheng)本(ben)和(he)(he)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)時間。:城市(shi)交通(tong)信(xin)號(hao)燈(deng),電(dian)(dian)子儀器(qi)設備,汽車等家用(yong)(yong)(yong)電(dian)(dian)器(qi)中的(de)(de)LED產(chan)(chan)(chan)(chan)(chan)(chan)品(pin)(pin),一般產(chan)(chan)(chan)(chan)(chan)(chan)量(liang)比較大(da)(da),所以(yi)(yi)如(ru)果采用(yong)(yong)(yong)人(ren)工(gong)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan),生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)效率很低,基本(ben)可以(yi)(yi)使用(yong)(yong)(yong)SMT貼(tie)片機(ji)(ji)(ji),根據SMT和(he)(he)組(zu)(zu)裝部(bu)(bu)件(jian),將產(chan)(chan)(chan)(chan)(chan)(chan)品(pin)(pin)加工(gong)成(cheng)成(cheng)品(pin)(pin)。3.展示產(chan)(chan)(chan)(chan)(chan)(chan)品(pin)(pin):由(you)于有(you)大(da)(da)量(liang)的(de)(de)展示,廣告(gao)燈(deng)箱(xiang),它們(men)需要(yao)通(tong)過芯片或SMT燈(deng)的(de)(de)組(zu)(zu)合來(lai)(lai)進行,所以(yi)(yi)也有(you)必要(yao)使用(yong)(yong)(yong)SMT機(ji)(ji)(ji)進行批量(liang)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan),還可以(yi)(yi)使我(wo)們(men)在很短(duan)的(de)(de)時間內快速準(zhun)確地放置。SMT生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)中有(you)哪(na)幾點不理想(xiang)的(de)(de)地方?湖南PCBASMT貼(tie)片加工(gong)生(sheng)(sheng)(sheng)產(chan)(chan)(chan)(chan)(chan)(chan)
SMT貼(tie)片機操作(zuo)流程圖。深圳SMT貼(tie)片加工(gong)打樣
SMT貼片機(ji)(ji)開(kai)(kai)機(ji)(ji)流程(cheng):1、按(an)照設(she)備安全技術(shu)操(cao)作(zuo)規程(cheng)開(kai)(kai)機(ji)(ji)。2、檢查(cha)貼片機(ji)(ji)的氣壓是(shi)否達到設(she)備要求,一(yi)般為(wei)5kg/crri2左右。3、打(da)開(kai)(kai)伺服。4、將貼片機(ji)(ji)所有軸回到源點位(wei)(wei)(wei)(wei)(wei)(wei)(wei)置(zhi)。5、根(gen)據PCB的寬(kuan)度(du),調整(zheng)貼片機(ji)(ji)FT1000A36導軌(gui)寬(kuan)度(du),導軌(gui)寬(kuan)度(du)應(ying)大于PCB寬(kuan)度(du)Imm左右,并(bing)(bing)保證(zheng)PCB在(zai)導軌(gui)上(shang)滑(hua)動自如。6、設(she)置(zhi)并(bing)(bing)安裝(zhuang)(zhuang)PCB定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)裝(zhuang)(zhuang)置(zhi):①首先按(an)照操(cao)作(zuo)規程(cheng)設(she)置(zhi)PCB定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)方(fang)式,一(yi)般有針(zhen)定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)和邊定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)兩種方(fang)式。②采用針(zhen)定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)時(shi)應(ying)按(an)照PCB定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)孑L的位(wei)(wei)(wei)(wei)(wei)(wei)(wei)置(zhi)安裝(zhuang)(zhuang)并(bing)(bing)調整(zheng)定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)針(zhen)的位(wei)(wei)(wei)(wei)(wei)(wei)(wei)置(zhi),要使定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)針(zhen)恰好(hao)在(zai)PCB的定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei)孔中(zhong)間,使PCB上(shang)下自如。③若采用邊定(ding)位(wei)(wei)(wei)(wei)(wei)(wei)(wei),必須根(gen)據PCB的外形尺寸調整(zheng)限位(wei)(wei)(wei)(wei)(wei)(wei)(wei)器和頂(ding)塊的位(wei)(wei)(wei)(wei)(wei)(wei)(wei)置(zhi)。7、根(gen)據PCB厚度(du)和外形尺寸安放PCB支(zhi)承(cheng)頂(ding)針(zhen),以(yi)保證(zheng)貼片時(shi)PCB上(shang)受力均勻,不松動。若為(wei)雙面(mian)貼裝(zhuang)(zhuang)PCB,B()面(mian)貼裝(zhuang)(zhuang)完畢后,必須重(zhong)新調整(zheng)PCB支(zhi)承(cheng)頂(ding)針(zhen)的位(wei)(wei)(wei)(wei)(wei)(wei)(wei)置(zhi),以(yi)保證(zheng)A(第(di)二)面(mian)貼片時(shi),PCB支(zhi)承(cheng)頂(ding)針(zhen)應(ying)避開(kai)(kai)B面(mian)已經(jing)貼裝(zhuang)(zhuang)好(hao)的元器件。8、設(she)置(zhi)完畢后,可(ke)裝(zhuang)(zhuang)上(shang)PCB,進行在(zai)線編程(cheng)或貼片操(cao)作(zuo)了。深圳(zhen)SMT貼片加工(gong)打(da)樣(yang)
深圳市琦峰(feng)(feng)精(jing)(jing)工(gong)科技(ji)有(you)限(xian)公(gong)司(si)(si)是國(guo)內一家多年來(lai)專注從事SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)-后(hou)焊(han)(han),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)廠(chang)(chang)(chang),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)加(jia)工(gong)廠(chang)(chang)(chang)的(de)老牌企業。公(gong)司(si)(si)位于(yu)(yu)深圳市龍(long)崗區(qu)(qu)吉(ji)華街道甘(gan)坑社(she)區(qu)(qu)甘(gan)李(li)路(lu)1號(hao)巨銀科技(ji)工(gong)業廠(chang)(chang)(chang)區(qu)(qu)1號(hao)廠(chang)(chang)(chang)房(fang)301,成(cheng)立于(yu)(yu)2011-12-15。公(gong)司(si)(si)的(de)產(chan)品(pin)營銷(xiao)網絡遍布國(guo)內各大市場。公(gong)司(si)(si)主要經(jing)營SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)-后(hou)焊(han)(han),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)廠(chang)(chang)(chang),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)加(jia)工(gong)廠(chang)(chang)(chang)等產(chan)品(pin),我(wo)(wo)們(men)依托高素質的(de)技(ji)術人員和(he)銷(xiao)售隊伍(wu),本著(zhu)誠(cheng)信(xin)(xin)經(jing)營、理解客(ke)戶(hu)需求為(wei)(wei)經(jing)營原則,公(gong)司(si)(si)通(tong)過良好的(de)信(xin)(xin)譽和(he)周到(dao)的(de)售前、售后(hou)服(fu)務(wu),贏得(de)用戶(hu)的(de)信(xin)(xin)賴和(he)支持。琦峰(feng)(feng)精(jing)(jing)工(gong)嚴格(ge)按照行業標準進行生(sheng)產(chan)研發,產(chan)品(pin)在(zai)按照行業標準測試完(wan)成(cheng)后(hou),通(tong)過質檢(jian)部門檢(jian)測后(hou)推出。我(wo)(wo)們(men)通(tong)過全(quan)新的(de)管理模式(shi)和(he)周到(dao)的(de)服(fu)務(wu),用心(xin)服(fu)務(wu)于(yu)(yu)客(ke)戶(hu)。深圳市琦峰(feng)(feng)精(jing)(jing)工(gong)科技(ji)有(you)限(xian)公(gong)司(si)(si)以(yi)誠(cheng)信(xin)(xin)為(wei)(wei)原則,以(yi)安全(quan)、便利為(wei)(wei)基礎,以(yi)優惠價格(ge)為(wei)(wei)SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)-后(hou)焊(han)(han),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)廠(chang)(chang)(chang),SMT貼(tie)(tie)(tie)(tie)片(pian)(pian)(pian)加(jia)工(gong)廠(chang)(chang)(chang)的(de)客(ke)戶(hu)提供貼(tie)(tie)(tie)(tie)心(xin)服(fu)務(wu),努力贏得(de)客(ke)戶(hu)的(de)認(ren)可和(he)支持,歡(huan)迎新老客(ke)戶(hu)來(lai)我(wo)(wo)們(men)公(gong)司(si)(si)參觀。
本文(wen)來自宜興市恒(heng)通(tong)風(feng)機(ji)有限公司://vijoo.com.cn/Article/02f7599922.html
山西保健肌酸鹽酸鹽
肌酸(suan)鹽酸(suan)鹽在(zai)能量(liang)代謝中(zhong)發揮著重要(yao)作用,人體內(nei)的(de)肌酸(suan)會(hui)與ATP發生反(fan)應(ying),生成(cheng)(cheng)磷酸(suan)肌酸(suan)CP)。磷酸(suan)肌酸(suan)是(shi)一種(zhong)高(gao)能物質(zhi),能夠為肌肉收(shou)縮提供能量(liang)。肌酸(suan)鹽酸(suan)鹽的(de)另一個(ge)優點(dian)是(shi)促(cu)進肌肉合成(cheng)(cheng)。在(zai)訓練過程中(zhong),人體需要(yao)大 。
石油化(hua)工行業(ye)中(zhong)常(chang)常(chang)需要監測液(ye)體(ti)的液(ye)位,超聲(sheng)波液(ye)位計(ji)可以安裝在儲(chu)罐、管道等設備上,實時監測液(ye)位高(gao)度,幫助(zhu)企(qi)業(ye)掌握石油化(hua)工生(sheng)產(chan)的情況,確保(bao)生(sheng)產(chan)安全和(he)效率。化(hua)學反應(ying)液(ye)位監測:化(hua)學反應(ying)過程(cheng)中(zhong),液(ye)位的控制對于反 。
地(di)坪漆(qi)(qi)的(de)使(shi)(shi)用壽命(ming)(ming)有多長?地(di)坪漆(qi)(qi)的(de)使(shi)(shi)用壽命(ming)(ming)受到多種(zhong)因素(su)的(de)影(ying)響(xiang),包括使(shi)(shi)用環境、涂裝質量(liang)、維護保(bao)養等(deng)。一般來說,普通(tong)地(di)坪漆(qi)(qi)的(de)使(shi)(shi)用壽命(ming)(ming)在(zai)3-5年左右,而高質量(liang)的(de)地(di)坪漆(qi)(qi)產品使(shi)(shi)用壽命(ming)(ming)可(ke)能會更(geng)長。在(zai)使(shi)(shi)用過程中,正確 。
硬密(mi)(mi)封球閥(fa)(fa)(fa)是(shi)一種高性(xing)能的(de)閥(fa)(fa)(fa)門,被廣泛(fan)應(ying)用(yong)于石油(you)、化工(gong)、天然氣、制藥、水處理等(deng)各個領域。硬密(mi)(mi)封球閥(fa)(fa)(fa)的(de)特點(dian)1.高密(mi)(mi)度聚(ju)四(si)氟乙烯PTFE)密(mi)(mi)封,密(mi)(mi)封性(xing)能好,閥(fa)(fa)(fa)門的(de)漏率可(ke)以達到零(ling)。2.閥(fa)(fa)(fa)門的(de)結構簡單(dan),體(ti)積小、 。
自(zi)動(dong)包裝(zhuang)機(ji)維護簡單,操(cao)作(zuo)方便,可(ke)以大程(cheng)度減少人工操(cao)作(zuo)過(guo)程(cheng)中的(de)(de)失誤和(he)浪費。同時(shi),這種(zhong)機(ji)器(qi)還可(ke)以通過(guo)電子控制系統實現自(zi)動(dong)檢測和(he)調整,提高了生(sheng)產的(de)(de)穩定性和(he)效率。包裝(zhuang)機(ji)是一種(zhong)高效、自(zi)動(dong)化的(de)(de)機(ji)器(qi),用于(yu)將產品包裝(zhuang) 。
作為(wei)蔬(shu)菜大(da)棚之一,對原(yuan)有的(de)根底玻璃(li)大(da)棚進行了晉級(ji)改造,以(yi)添加農作物(wu)產(chan)值。它選用(yong)玻璃(li)作為(wei)采光資料,能習慣不同(tong)區(qu)域(yu)和氣候條件(jian)。其作業原(yuan)理是(shi)以(yi)自動控制的(de)方(fang)式調(diao)理玻璃(li)溫(wen)室內(nei)的(de)各種溫(wen)濕度,為(wei)作物(wu)成長(chang)發明愈加有利 。
運(yun)動(dong)(dong)控制卡不同于單片機、PLC等可編程(cheng)存儲(chu)器(qi),它必須依靠PC平(ping)臺(tai)而運(yun)行,不過運(yun)動(dong)(dong)控制卡的(de)這(zhe)一結構,也帶來許(xu)多獨特的(de)優點(dian):1、拓展性好:運(yun)動(dong)(dong)控制系(xi)統借(jie)助PC平(ping)臺(tai)上龐大(da)的(de)函數庫,可以很方便的(de)添加許(xu)多復雜而 。
農(nong)林(lin)業(ye)仿真教(jiao)學(xue)(xue)系(xi)(xi)統是一(yi)種(zhong)創新(xin)的(de)農(nong)業(ye)教(jiao)育工具,它利用計算(suan)機技術模擬真實的(de)農(nong)業(ye)環境,讓學(xue)(xue)生可(ke)以在虛擬環境中(zhong)進行實踐操作和學(xue)(xue)習。這個教(jiao)學(xue)(xue)系(xi)(xi)統可(ke)以模擬各(ge)種(zhong)農(nong)林(lin)業(ye)場景(jing),包(bao)括森(sen)林(lin)、農(nong)田、果園等,以及各(ge)種(zhong)農(nong)作物和樹 。
光(guang)伏組件封裝設備的安全標準和(he)(he)規(gui)范(fan)對設備生(sheng)命周期(qi)的不同階段(duan)進行了規(gui)范(fan)。根據搜索結果,以下是一些(xie)相關的規(gui)范(fan)和(he)(he)階段(duan):設計(ji)階段(duan):在光(guang)伏組件封裝設備的設計(ji)階段(duan),安全標準和(he)(he)規(gui)范(fan)要求制造(zao)商考慮(lv)設備的安全性能和(he)(he)可靠性 。
稱(cheng)重傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)實際(ji)上(shang)是(shi)一種將質量信號轉化成可(ke)測(ce)定(ding)電信號輸入的(de)裝置(zhi)。在(zai)采用傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)以前,應考量傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)的(de)實際(ji)工(gong)作環境,對準確選(xuan)取稱(cheng)重傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)非常關(guan)(guan)鍵。它聯(lian)系到(dao)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)的(de)穩定(ding)工(gong)作、安全性和使用壽命,甚至關(guan)(guan)系到(dao)整(zheng)個稱(cheng)重 。
玄武(wu)巖石(shi)(shi)(shi)子(zi)主要(yao)礦物(wu)為(wei)輝(hui)石(shi)(shi)(shi)和(he)(he)(he)基性斜長石(shi)(shi)(shi),次生(sheng)礦物(wu)為(wei)橄欖(lan)石(shi)(shi)(shi)和(he)(he)(he)角閃石(shi)(shi)(shi)島。大多為(wei)灰黑色或黑色,通常有(you)斑(ban)駁的結(jie)構。斑(ban)巖晶體為(wei)橄欖(lan)石(shi)(shi)(shi)、輝(hui)石(shi)(shi)(shi)和(he)(he)(he)堿性斜長石(shi)(shi)(shi)。基質(zhi)為(wei)隱晶或半晶,由微晶或玻璃質(zhi)組成(cheng)。通常具有(you)孔隙結(jie)構和(he)(he)(he)杏仁 。