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峰焊接中由助焊剂所引发的缺陷现象及助焊剂的

作者:博维科技 时间:2019-09-06 18:22

1. 在波峰焊接中由助焊剂所引发的焊接缺陷现象

⑴ 虚焊

RENHEJINSHUZAIKONGQIHUANJINGZHONGQIBIAOMIANDOUJIANGSHOUDAOYANGHUOQITAHANYANGQITIDENGDEBUTONGCHENGDUDEHUAXUEJINSHI,ZAIZIRANJIEJINSHUDEBIAOMIANZHUANGTAIDOUBUSHICHUNJINGDEDANJINSHUZHUANGTAI。YINCI,BUGUANCAIQUHEZHONGBAOHUCUOSHI,QIBIAOMIANSUOBIAOXIANDEHANJIEXINGNENGDOUBUHUISHILIXIANGHUADE,JINKAOJINSHUBENSHENDETEXINGERBUXUJIEZHUQITAWUZHIDEBANGZHU(RUZHUHANJI)DADAOLIXIANGHUADEHANJIEXIAOGUOJIHUSHIBUKENENGDE。JISHICUNZAIZHEIZHONGKENENG,NEIYESHIZAIFUCHULEGAOANGDECHENGBENDAIJIAHOUDEJIEGUO,ZHEIXIANRANSHIBUSHIXIANDE。

直播吧手机版 JINSHUBIAOMIANZHUANGTAIDEBULIANG,SHIYOUFAXUHANXIANXIANGDEGUANJIANYINSU。ZAIRUANQIANJIEGUOCHENGZHONGCAIYONGLEZHUHANJI( YETIDEHUOQITIDE)HOU,JIUKEJIEZHUYUZHUHANJIDEZUOYONGLAIHUOQULIXIANGDEJIEJINGBIAOMIAN。BEIHANBIAOMIANDEJIEJINGDUSHISUOYONGZHUHANJIHUOXINGDEHANSHU。60NIANDAICHUYIQIAN,WOGUOJUNYONGDIANZICHANPINSHENGCHANZHONGPUBIANCAIYONGSONGXIANGJIUJINGZUOZHUHANJI,YOUYUGAILEIZHUHANJIYUXUDUOJINSHUFANYINGDEGUYOUHUAXUEHUOXINGRUO,YINERCHANPINDEXUHANXIANXIANGTEBIEYANZHONG,JIHUCHENGLEYIDAGONGHAI。60NIANDAICHUWOGUOCONGYUANSULIANYINJINDEXXDAODANMOZHIDAOLEIDASHENGCHANXIANSHI,SUFANGHAIZHUANMENTIGONGLEGAIWUQIXITONGDAI“MIMI”JIDEZHUANYONGZHUHANJIPEIFANG。GUONEIXUDUOJUNGONGDANWEIZAIJUNPINSHENGCHANZHONGHAININGKEJIANCHICAIYONGHUOXINGSONGXIANGZHUHANJI+QINGXIGONGYI,ERJINYONGHUOXINGJIAORUODEMIANQINGXIZHUHANJI,QIMUDEJIUSHIWEILEBIMIANXUHANYINHUANJIGAIWUQIXITONGKEKAOXINGDAILAIYANZHONGDEBUCEHOUGUOWEIHAI。

⑵ 金属化孔透孔不良

直播吧手机版 DANGPCBHEYUANQIJIANKEHANXINGJUNDADAOYAOQIU( LINGJIAOSHIJIAN<1s )SHI,QIEBOFENGHANJIEDEGONGYICANSHUYEHESHIDEQINGKUANGXIASUOCHUXIANDEJINSHUHUAKONGTOUKONGBULIANGXIANXIANGSHI,QIZHUYAOYINGXIANGYINSUYINGKAOLVWEIZHUHANJIDEMANLIUXINGHEHUOXINGJUNCHASUOZHI。KONGZHONGWEITOURUZHUHANJISHIYESHIJINSHUHUAKONGTOUKONGBULIANGDEYUANYIN。YINCI,ZAISHIYONGTONGYIZHONGZHUHANJIDEQINGKUANGXIA,CAIYONGZHUHANJIPAOMOBOFENGTUFUFANGSHISHIJIUBUYIFASHENGJINSHUHUAKONGTOUKONGBULIANGXIANXIANG,ERCAIYONGZHUHANJIPENWUTUFUFANGSHIFASHENGJINSHUHUAKONGTOUKONGBULIANGXIANXIANGDEGAILVJIUYAOGAODEDUO。CHUXIANCIXIANXIANGDEYUANYINSHIPENWUTUFUFANGSHIYISHOUZUDANGERCHUXIANTOUKONGXINGBUCHANGSUOZHI。

⑶ 桥连和拉尖

直播吧手机版 ZHUHANJIDEXINGNENGYOULIEDUIBOFENGHANJIEZHONGQIAOLIANHELAJIANDENGXIANXIANGYEYOUJIAODADEYINGXIANG。XINGNENGYOULIANGDEZHUHANJIBUJINJUBEIHANJIESUOXUYAODEHUOXING,ERQIEHAIJUYOUYOULIANGDEBAOHUWEIYUBOLIQUNEIYETAIQIANLIAOBUBEIYANGHUADENENGLI,ZHEISHIJIANSHAOPCBYUQIANLIAOBOLIGUOCHENGZHONGYIZHIQIAOLIANHELAJIANDEZHONGYAOCUOSHIZHIYI,RUTU1SUOSHI。

ZAISHANGJIANGZHONGWOMENJICHULEYIGETAOLUNTI:CXIANZAIHANJIEGONGHAOWEI:ZXA10-ADS2-CORZ( 010502 )SHI,JIBANSHANGDIANRONGC415YUC542、C413 YUC540ZHIJIANXIANGLINJIANXIJUNWEI0.63mm( <1.27mm,SHUYUSHEJIBUDANG),YONGXINPENZUIKAISHUANGBOSHIZAITU2SUOSHIDEA、BERCHUBAIFENZHIBAIDIFASHENGQIAOLIANXIANXIANG,ERJINKAIDIERBOJINXINGDANBOHANJIESHI,FANERQIAOLIANFASHENGLVQUEFEICHANGXIAO。QISHIWENTIJIUCHUZAIZHUHANJISHANG,ZHUYAOYUANYINBUWAIHUSHI:

① SUOYONGZHUHANJIZAIBOFENGHANJIEGUOCHENGZAIPCBBOLIQUNEIJIWUBAOHUNENGLI;

② JINGGUODIYIBOFENGDECHONGSHUAPCBBANMIANSHANGZHUHANJIYISUOSHENGWUJI。

⑷ PCB板面洁净度不良

直播吧手机版 ZAIBOFENGHANJIEGUOCHENGZHONGZHUHANJIDEHUAXUECHENGFENHEPENTULIANGYUHANHOUDELIZICANYUNONGDU、BIAOMIANJUEYUANDIANZU、JIEJINGDUBULIANGYIJICHANPINZAIWEILAISHIYONGGUOCHENGZHONGDEKEKAOXINGDENGYOUZHEZHIJIEDEGUANXI。

2. 助焊剂在波峰焊接工艺中的作用

2.1 正确运用助焊剂对确保产品质量的重要意义

直播吧手机版 ZHUHANJISHIBOFENGHANJIEZHONGBUKEQUESHAODEZHONGYAOCAILIAO,TADUIQUEBAOBOFENGHANJIEXIAOGUOHECHANPINZHILIANGDOUQIZHEGUANJIANXINGZUOYONG。LIANGHAODEZHUHANJICAILIAOJIQIGONGNENGDECHONGFENFAHUI,SHITIGAOSHENGCHANXIAOLV、JIANGDICHANPINCHENGBEN、TISHENGCHANPINXITONGKEKAOXINGDEZHONGYAOSHOUDUAN。

1.2 助焊剂在波峰焊接中的作用

直播吧手机版 YIBANQINGKUANGXIA,BEIHANJINSHUHEYIRONGDEQIANLIAOHEJINBIAOMIANJUNJUYOUYICENGFANGAIXINGCHENGLIANJIEJIEMIANDEBOXIUMO。GAIXIUMOSHISHOUHUANJINGQINSHIDEJIEGUO,BINGYINHUANJINGHEBEIHANJINSHUDEBUTONG,ERKENENGYOUYANGHUAWU、LIUHUAWU、TANHUAWUHUOQITAFUSHICHANWUZUCHENG。ZHEIXIEFEIJINSHUFUSHICHANWUDEZUOYONGXIANGDANGYUZUDANGCENG。YINCI,ZAIQIANJIEQIANBIXUYAOJIANGQIQINGCHUDIAO。ZAIBOFENGHANJIEGUOCHENGZHONG,ZHUHANJISUOQIDEZUOYONGGAIKUOQILAIZHUYAOGONGNENGRUXIA:

⑴ 除去被焊基体金属表面的锈膜

ZAIBEIHANJINSHUBIAOMIANDEXIUMOTONGCHANGBURONGYURENHERONGYE,BUNENGXIANGQINGCHUYOUZHINEIYANGJIANGQICHUDIAO,DANSHIZHEIXIEXIUMOYUMOUXIECAILIAOFASHENGHUAXUEFANYING,SHENGCHENGNENGRONGYUYETAIZHUHANJIDEHUAHEWU。JIUKECHUQUXIUMODADAOJINGHUABEIHANJINSHUBIAOMIANDEMUDE。ZHEIZHONGHUAXUEFANYINGKEYISHISHIZHUHANJIYUXIUMOSHENGCHENGRONGYUZHUHANJIHUOZHUHANJIRONGJIDELINGYIZHONGHUAHEWU,YEKEYISHIBAJINSHUXIUMOHAIYUANWEICHUNJINGJINSHUBIAOMIANDEHUAXUEFANYING。

直播吧手机版 SHUYUDIYIZHONGHUAXUEFANYINGDEZHUHANJIZHUYAOYISONGXIANGJIZHUHANJIWEIDAIBIAO。CHUNJINGSONGXIANGZHUYAOYOUSONGXIANGSUANHEQITATONGFENYIGOUSHUANGTIESUANZUCHENG。YONGZUOZHUHANJISHI,TONGCHANGYONGJIUJING(YIBINGCHUN)ZUORONGYE,DANGZAIYANGHUALEDETONGBIAOMIANSHANGTUSHANGGAIZHUHANJIBINGJIARESHI,SONGXIANGSUANYUYANGHUATONGHUAHESHENGCHENGSONGXIANGSUANTONG,TAYIYUHEMEIYOUFANYINGDESONGXIANGHUNHEZAIYIQI,CONGERWEIQIANLIAODERUNSHITIGONGLEJIEJINGDEJINSHUBIAOMIAN。SONGXIANGSUANDUIYANGHUATONGCENGXIAMIANDEJITITONGMEIYOURENHEQINSHIZUOYONG。DANGJIEZHUYUYOUJIRONGJIQINGCHUCANLIUDEZHUHANJISHI,SONGXIANGSUANTONGYEYIQIBEIQINGCHUDIAOLE。

ZUOWEIDIERZHONGHUAXUEFANYINGDELIZISHIMOUXIEJUYOUHAIYUANXINGQITI。LIRU,QINGQIZAIGAOWENXIANENGHAIYUANJINSHUBIAOMIANDEYANGHUAWU,SHENGCHENGSHUIBINGHUIFUCHUNJINGDEJINSHUBIAOMIAN。QIHUAXUEFANYINGTONGSHIKEBIAOSHIWEI:

直播吧手机版 MO + H2 = M + H2O

⑵ 防止加热过程中被焊金属的二次氧化

BOFENGHANJIESHI,SUIZHEWENDUDESHENGGAO,JINSHUBIAOMIANDEZAIYANGHUAXIANXIANGYEHUIJIAJU。YINCI,ZHUHANJIBIXUWEIYIJINGHUADEJINSHUBIAOMIANTIGONGBAOHU。JIZHUHANJIYINGZAIZHENGGEJINSHUBIAOMIANXINGCHENGYICENGBOMO,BAOZHUJINSHU,SHIQITONGKONGQIGEJUE,DADAOZAIQIANJIEDEJIAREGUOCHENGZHONGFANGZHIBEIHANJINSHUERCIYANGHUADEZUOYONG。

⑶ 降低液态钎料的表面张力

QIANJIEQUYUZHONGDEZHUHANJI,NENGGOUYICUJINQIANLIAOMANLIUDEFANGSHIYINGXIANGBIAOMIANNENGLIANGPINGHENG。JIANGDIYETAIQIANLIAODEBIAOMIANZHANGLI,JIANXIAOJIECHUJIAO。

JINSHUBIAOMIANCUNZAIYANGHUACENGSHI,YETAIQIANLIAOWANGWANGNINGJUCHENGQIUZHUANG,BUYUJINSHUFASHENGRUNSHI。YANGHUAWUDUIQIANLIAORUNSHIDEZHEIZHONGYOUHAIZUOYONG,SHIYOUYUCUNZAIZHEYANGHUAWUDEJINSHUBIAOMIANDEZHANGLIBIJINSHUBENSHENDEBIAOMIANZHANGLIYAODIDEDUODEYUANYINSUOZHI。γSF >γLFSHIYETIRUNSHIGUTIDEJIBENTIAOJIAN。FUGAIZHEYANGHUAMODEGUTIJINSHUBIAOMIANBIQIWUYANGHUAMODEJIEJINGBIAOMIAN,BIAOMIANZHANGLIXIANZHUJIANXIAO,ZHISHIγSF <γLFERCHUXIANBURUNSHIXIANXIANG。

HANJIEZHONGSHIYONGZHUHANJIKEYIQINGCHUQIANLIAOHEBEIHANJINSHUBIAOMIANDEYANGHUAMO,GAISHANLERUNSHI。ERQIEDANGYETAIQIANLIAOHEBEIHANJINSHUBIAOMIANFUGAILEYICENGZHUHANJIZHIHOU,TAMENZHIJIANDEJIEMIANZHANGLIFASHENGLEBIANHUA,RUTU3SUOSHI。

直播吧手机版 YETAIQIANLIAOZHONGZHIMANLIUSHIDEPINGHENGFANGCHENGSHIWEI:

γSF=γLF+γLS COSθ

COSθ=(γSF-γLF )/γLS

SHIZHONG:

直播吧手机版 γSF - BEIHANJINSHUHEZHUHANJIZHIJIANDEJIEMIANZHANGLI;

直播吧手机版 γLF - YETAIQIANLIAOHEZHUHANJIJIEMIANSHANGDEJIEMIANZHANGLI;

直播吧手机版 γLS - YETAIQIANLIAOHEBEIHANJINSHUZHIJIANDEJIEMIANZHANGLI。

YOUSHANGSHIKEZHI,YAOTIGAORUNSHIXING ( JIJIANXIAOθJIAO),BIXUZENGDAγSF HUOJIANXIAOγLF JIγLS 。ZHUHANJIDEZUOYONGCHULEQINGCHUBEIHANJINSHUBIAOMIANYANGHUAWUSHIγSF ZENGDAWAI,LINGYIGEZHONGYAOZUOYONGJIWEIJIANXIAOYETAIJIANDEJIEMIANZHANGLIγLF 。

⑷ CHUANRE

YIBANBEIQIANJIEDEJIETOUBUDOUCUNZAIBUSHAOJIANXI,ZAIQIANJIEGUOCHENGZHONG,ZHEIXIEJIANXIZHONGDEKONGQIQIZHEGEREDEZUOYONG,CONGERDAOZHICHUANREBULIANG。RUGUOZHEIXIEJIANXIBEIZHUHANJITIANCHONGMAN,ZEKEJIASURELIANGDECHUANDI,XUNSUDADAOREPINGHENG。

⑸ CUJINYETAIQIANLIAODEMANLIU

JINGGUOYUREHOUDEZHANZHUANGZHUHANJIYUBOFENGQIANLIAOJIECHUHOU,HUOXINGJUZENG,ZHANDUJIJUXIAJIANGERZAIBEIHANJINSHUBIAOMIANXINGCHENGDIERCIMANLIU,BINGXUNSUZAIBEIHANJINSHUBIAOMIANPUZHANKAILAI。ZHUHANJIDIERCIMANLIUGUOCHENGSUOXINGCHENGDEMANLIUZUOYONGLI,FUJIAZAIYETAIQIANLIAOSHANGCONGTUODONGLEYETAIJINSHUDEMANLIUGUOCHENG,RUTU4SUOSHI。

3 理想助焊剂在波峰焊接过程中的作用机理及模式

3.1 理想助焊剂的作用模式

FENXIZHENGGEBOFENGHANJIEDEWULIHUAXUEGUOCHENG,ZHUHANJISUIRANCANYULEQUANGUOCHENG,DANSHITAZAIMEIYIGEQUJIANSUOFAHUIDEZUOYONGQUESHIBUYIYANGDE,RUTU5SUOSHI。ERQIEBUTONGLEIXINGDEZHUHANJI,QICANYUWUHUAGUOCHENGDEZAITIYESHIBUTONGDE,XIAMIANWOMENJINYISONGXIANGXINGZHUHANJI、HUOXINGSONGXIANGZHUHANJIHEMIANQINGXIXINGZHUHANJIFENBIELAIJIESHIQIJUTIDEWUHUAGUOCHENG。

3.2 松香助焊剂在波峰焊接过程中的作用机理

直播吧手机版 SONGXIANGZHUHANJIDEZUOYONGJILIHEMOSHIDEMIAOSHURUTU6SUOSHI。

3.3 活性松香助焊剂在波峰焊接中的作用机理与模式

直播吧手机版 SONGXIANGZHUHANJIHUOXINGRUO,DUIBEIHANJINSHUBIAOMIANJIEJINGNENGLICHA,DANGBEIHANJINSHUBIAOMIANKEHANXINGBUDALIXIANGSHI,JIANGPUBIANCHUXIANXUHAN、QIAOLIANDENGHANJIEQUEXIAN。WEIKEFUSHANGSHUQUEXIAN,TIGAOHANJIEZHILIANGHEXIAOLV,JIANGXUHANHEQIAOLIANXIANXIANGJINKENENGDIJIANGDAOZUIDI,MUQIANGUONEIJUNYONGSHEBEIZHONGHAIGUANGFANSHIYONGHUOXINGSONGXIANGZHUHANJIDEYUANYINJIUZAICI。

HUOXINGSONGXIANGZHUHANJIZAIBOFENGHANJIEZHONGDEZUOYONGJILIYUMOSHIDEMIAOSHURUTU7SUOSHI。

3.4 免清洗助焊剂在波峰焊接中的作用机理与模式

直播吧手机版 HUOXINGSONGXIANGZHUHANJIGUTIHANLIANGGAO,BOFENGHANHOUCANYUWUDUO,QIECANYUWUZHONGKENENGHAIHANYOUWEIFENJIEWANDELIZIXINGDEHUOXINGWUZHI,RUOBUZIXIQINGCHUJIANGYIHAIWUQIONG。YOUYUQINGXIANZHONGYAODALIANGSHIYONGODS、VOCHUOXIAOHAOHEWURANSHUIZIYUAN,DUIBAOHUDIQIUHUANJINGBULI。YINCI,MUQIANZAIYIXIETONGYONGXINGDIANZICHANPINSHENGCHANZHONGZHENGDALITUIGUANGMIANQINGXIZHUHANJIDEYINGYONG。

直播吧手机版 MIANQINGXIZHUHANJIZAIBOFENGHANJIEZHONGDEZUOYONGJILIYUMOSHIDEMIAOSHURUTU8SUOSHI。

MIANQINGXIZHUHANJIDEGONGYIWENDUGUIFANBIJIAOYANGE,ZHIYOUCHONGFENMANZULEQITEXINGYAOQIUDETIAOJIANXIA,CAINENGCHONGFENFAHUIQIZHUHANZUOYONG。YINCI,GONGHUOFANGBIXUTIGONGWANZHENGDEWENDUYINGYONGTEXING。LIRU:BILISHIINTERFLUX ELECTRONICSGONGSISHENGCHANDEIF 2005MMIANQINGXIZHUHANJIJIUJICHULEWANZHENGDEYINGYONGWENDUGUIFANZHIRUXIA:

YUREWENDUWEI: 95℃-130℃(YUANJIANMIAN) ;

直播吧手机版 QIANLIAOCAOWENDU: ZUIDIWEI235℃,ZHENGCHANGWEI250℃,ZUIGAOWEI275℃;

PCBYURONGHUAQIANLIAOJIECHUSHIJIANYINGWEI4MIAO。

直播吧手机版 ZONGGUANXIANDAIDIANZISHEBEIDERUANQIANJIE(SHOUGONGHAN、BOFENGHANHEZAILIUHAN)ZHONG,ZHUHANJICONGTOUDAOWEIDOUBANYANLEYIGEFEICHANGGUANJIANDEJIAOSE。TONGGUOSHANGSHUDUIBOFENGHANJIEGUOCHENGDEMIAOSHU,ZUYIZHENGMINGZAIRUANQIANJIEGONGYIZHONGRUHEQIANGDIAOZHUHANJIDEZHONGYAOXINGDOUSHIBUGUOFENDE。

4 在波峰焊接中如何评估助焊剂的能力指标

4.1 如何评价助焊剂 助焊剂性能的好坏通常是采用下述两方面的作用能力来描述:

直播吧手机版 ⑴ HUOXING:WEILEYOUXIAODIJINXINGRUANQIANJIE,ZHUHANJIBIXUTONGGUOHUAXUEFANYINGLAIJINGHUABEIHANJINSHUBIAOMIAN,ZHIYOUZAICHONGFENJINGHUAHOUDEBIAOMIAN,BEIHANJINSHUHERONGHUAQIANLIAOZHIJIANCAINENGXINGCHENGYOUXIAODEYEJINLIANJIE,CAIKEGENCHUXUHANDENGQUEXIAN。YINCI,ZAIPINGJIAZHUHANJISHIHUOXINGSHIBIXUYAOCHONGFENGUANZHUDE。

⑵ BAOHUGONGNENG:ZAISHANGSHUFENXIZHONGKEJIANZHUHANJIZAIBOFENGHANJIEGUOCHENGZHONGDELINGYIGEJIWEIZHONGYAODEZUOYONGSHIZHUHANJIDEBAOHUGONGNENG。BAOHUGONGNENGDESHIXIANZAISONGXIANGXINGZHUHANJIZHONGSHITONGGUOSONGXIANGZHEIYIMEIJIELAISHIXIANDE,ERZAIMIANQINGXIZHUHANJIZHONGZESHITONGGUOGAOFEIRONGJIZHEIYIMEIZHILAIGUANCHESHIZHONGDE。MIANQINGXIZHUHANJIZHONGBAOHUGONGNENGDEQIANGRUODUIBOFENGHANJIEDECHENGBAIGUANXIHENDA。ERQIEGAIGONGNENGBIXUTONGGUOSHANGJIYUNXINGCAINENGKAOCHACHULAI。

4.2 如何理解助焊剂的腐蚀性

CONGHUAXUEJIAODUKAN,MEIYIZHONGYOUXIAODEZHUHANJIJUNBIRANZAIMOUZHONGCHENGDUSHANGJUYOUFUSHIXING,FOUZE,TAJIUBUNENGCONGBEIHANBIAOMIANQINGXIDIAOYANGHUAMO。WOMENSUOSHUODEFUSHIXINGGUANZHUDESHIZHIZAIWANCHENGQIANJIEHOUZAIZHUANGPEIJIANSHANGCANLIUDEZHUHANJIJIQICANYUWUDEHUAXUEWEIXIANXING,BINGYOUCIERQUEDINGZHUHANJIDELIHUAZHIBIAOYAOQIU。

直播吧手机版 5 BOFENGHANJIEYONGZHUHANJIDETEXINGYAOQIUJIQINENGLIDEPINGGU

5.1.2 应用性数据

直播吧手机版 YINGYONGXINGSHUJUNEIRONGJIANBIAO 2 。

直播吧手机版 LIHUAZHIBIAOHEYINGYONGXINGSHUJUGONGFANGMEIPIGONGHUOSHIJUNBIXUANBIAO1、BIAO2GESHITIANDANTIGONGJISHIYONGFANGQUERENHOUCUNDANG,SHIYONGFANGRENWEIXUYAOSHIKEZHUOQINGJINXINGCHOUYAN。

直播吧手机版 BIAO 2 ZHUHANJIDEYINGYONGGONGYISHUJU

5.2 使用方的动态能力试验(使用方验收试验)

直播吧手机版 SHIYONGFANGANTEDINGDEDONGTAINENGLISHIYANGONGYIGUIFAN(KEYOUGONGFANGHEYONGFANGGONGTONGXIESHANGQUEREN),ANZHAOGONGFANGTIGONGDEYINGYONGSHUJU,SHANGJIJINXINGHANJIESHIYAN,ZHUHANJIYINGQUEBAOXIALIEYAOQIU:

⑴ DUIJINSHUHUAKONGTOUHANXINGLIANGHAO;

⑵ HANJIEQUEXIANLVDI;

直播吧手机版 ⑶ HANDIANJIEJING、LUNKUOFUXINGHAO;

直播吧手机版 ⑷ PCBBANMIANDEQINGJIEDU ( ZHUHANJICANLIUWU、KELIWU、LVHUAWU、TANHUAWUHEBAISECANLIUWU ) YINGFUHE IPC-A-610CZHIGUIDINGYAOQIU;

⑸ ZHUHANJICANLIUWUZHONGDELIZINONGDUYING < (1.5-5.0)μgNaCl/cm2;

⑹ JUEYUANDIANZUZHI(SIR)(DIANDAOFACEDIANZULV)YING >2×106Ω-cm 。

6. 助焊剂的发展趋势

IPC- CH-65B CN《QINGXIZHIDAO》BIAOZHUNZHUXI、HEMINGKEJIDONGSHIZHANG WANGLIANXIANSHENGZAICHUXIDIANZIXIHANLIAOFENHUINIANHUISHANGFABIAOLEDUIZHUHANJIFAZHANQUSHIDEYIXIEJIANJIEYUJIANYI:

WANGLIANDONGSHIZHANGBIAOSHI:SUIZHEGUONEIWAIDIANZIZHIZAOYECHANPINSHENGJIHUANDAIHEXINDEGONGYIZHIZUOFANGSHIDECHANSHENG,ZHUHANJIZAIGUONEIDEZONGLIANGZAIZHUBUXIAJIANGHEJIANSHAO,YUCITONGSHI,KEHUDUIZHUHANJIDEQUANMIANJISHUZHIBIAOHEYAOQIU,YOULEPUBIANDETISHENG,WOMENHAIXUZAIYIXIAJIGEFANGMIANQUTISHENGZHUHANJIDEZONGHEZHIBIAO,YUGUOWAIZHUHANJICHANGSHANGKANQI:

1. WEIYINGHEXINDECAILIAO、JINSHUHEJIN、HANJIEHEBEIHANJIEWUERSHIYONGDEZHUHANJILAIBAOZHANGXINCAILIAODEQIANTIXIA,NENGGOUSHIXIANLIANGHAO、KEKAODEHANJIE;

直播吧手机版 2. XINDEGONGYIYINGYONGJISHUSHIYINGXING,BIFANGSHUO,KEXUANZEBOFENGHANSUOSHIYONGDEZHUHANJI,YUCHUANTONGZHUHANJIZAIZHIBIAOSHANGYAOQIUYOUSUOBUTONG,YEYOUDAIYUWOMENCONGYERENYUANJINXINGTISHENG;

直播吧手机版 3. ZAIHUANBAOANQUANSHANG,CONGZHANGYUANFAZHANDEQUSHISHANGKAN,SHUIJIXINGZHUHANJIHUISHIJIANGLAIZHUHANJIDEZHONGJIFAZHANFANGXIANGHEMUBIAO,TONGSHISHUIJIXINGZHUHANJIDEYINGYONGYOUWEIYENEITONGRENDAILAIXINDETIAOZHANHEXINDEJISHUYAOQIU。

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