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波峰焊改无铅的解决方案

2018/4/17 15:07:50 次浏览

波峰焊机在结构上和性能上的改进
解决方案 :
  • 预热及加热温度提高 
  • 锡炉喷口结构改进 
  • 提高温度控制精度

bofenghanjijinxingwuqianhuagaizao。zhixujiazhangyurewenqudezhangdu、tigaojiarekongzhijingdu,bofenghanjidewuqianhuagaizaoxiangduijiubijiaofuzayixie。yixiazhongdianxushubofenghanjidewuqianhuagaizaoyaoqiu。bofenghanjidewuqianhuayaoqiuyuchuantongdebofenghanjixiangbi,wuqianbofenghanjizaijiegoushanghexingnengshangyouxialiebutongdegaijin:

体育平台网站 yi、yurejijiarewendutigao,wenkongjingdugaoyouyuwuqianhanliaorongrongwendubiyouqianhanliaogao30℃yishang,yaoqiubofenghanjideyurewenduhexiluwendushenggao。yureshijianyiban1-3fenzhong,pcbchuansongsudu1.2mi/fen,yurequzhangdudayu1.2miyishang,yibanfenweiliangduanyure。yuanqijianyurezai130~150 ℃(hanjiemian),baowenqu150~170 ℃(10 ~30miao),hanjiequhanjiewendu250±2 ℃(shiceyuanqijianhandianwendu230 ℃yishang)。weicibofenghanjideyurequtongchangcaiyongrebanshihuogaowenshaojietaociguanhuoyuanhongwaifareguanjiarefangshi,yurequdewendukongzhicaiyongpidfangshi+moniliangdiaoyadiaoxiangfangshi;

er、xilupenkoujiegougaijinyaoqiuhanjieshihanliaojinrunshijianbuxiaoyu4miao。caiyongshuangbofenghanjie,diyibofengweitongchangdexuliubo,dierbofengweicengliukuanpingbo。caiyongjiakuanbofengkou,jianxiaobofengkoujianjudeshejifangan。liangbofengkouzhijianjuli60 mmzuoyou,shiliangbozhijiandehanxixiangju30 mmzuoyou。hanjieshiliangbofengzhijiandewendudieluo(xiajiang)zuidabuchaoguo50 ℃。

san、hanxifangyanghuayuxizhafenliuwuqianhanliaodegaohanxiliangshihanliaogengrongyiyanghua,kongzhihanxiyanghuachengweiwuqianhanjieshidezhongyaowenti。caiqudezhuyaocuoshiruxia:

1)采用新型喷口结构和锡渣分离设计,尽量减少锡渣中的含锡量
2)氧化渣自动聚积的流向设计,波峰上无飘浮的氧化锡渣,无须淘渣,减少维护。
3)增加抗腐蚀性措施无铅焊料在高温下,锡对铁有较强的溶解性,传统的波峰焊机的不锈钢焊料槽及锡汞和喷口会逐渐腐蚀,特别是叶片、喷口等更容易损坏。如果无铅焊料中含有锌(zn),则更易使其氧化。因此无铅焊接的波峰焊机的这些部位应当采用钛合金制造,才可避免腐蚀损坏。

体育平台网站 si、zhuhanjihezhuhanjipentuxitongwuqianhanjieshi,zuihaocaiyongzhuanweiwuqianhanjieyanzhidemianqingxizhuhanji,gaizhuhanjigutihanliangdi、buhanlusu、huifawanquan,yebuhanrenheshuzhi、songxiangheqitahechengwuzhi,hanhouwucanliuwu。jingyinggongsishengchandemianqingxizhuhanjiif2005c,zhuanweiwuqianhanjieyanzhi,duiyudabufennanyihanjiedebiaomianyoujihaodehanjiexingneng,hanhouwucanliuwu。zaihal、osp、niejin、jihuaxueduxibiaomian,hanjiekekaoxingjigao。zhuhanjizuihaoshiyongzhuhanjipentuxitong,caiyongpenwufajinxinghanjidepentu。zhuhanjipentuxitongjuyouyigemibishidezengyahengyaguan,neizhuangzhuhanji。penzuicaiyongbujinsifudianjiqudong,weijikongzhi。shiyigepentusudu、pentukuanduhepentuliangkediaodezidonggenzongxitong。zhuhanjihuishoucaiyongshangxiachoufeng、liangjibuxiugangsiwangguolv,shangbuguolvqingxie,liyongliutitexingzuidajidudiguolvshouhuiduoyudezhuhanji。gaixitongshihegezhongwuvochuanbaozhuhanjidepentu。

体育平台网站 wu、wendukongzhijingdutigaoyuanlaishiyongyouqianhanliaoshi,rongrongwenduwei183 ℃,dadaohanjiewendu250℃(shiceyuanqijianhandianwendu210 ℃zuoyou),gongyichuangkoukuanduwei67 ℃。wuqianhanjieshiwuqianhanliaoderongrongwendutigaodao210 ℃yishang。youyuyuanqijiannairexingdexianzhi,hanjiewendurengjiuwei250 ℃,shiqihanjiequdegongyichuangkoubianze。zheijiuyaoqiubofenghanjidewendudekongzhijingdutigaodao±2 ℃,chuantongbofenghanjicaiyongwendubiaofangshikongwen,yuanliweitongduanmoshi(on-off)wendujingdudi。xindewuqianbofenghanjiejiyoudechangjiacaiyongpid+moniliangdiaoyakongzhifangfa,kejianshaowenduchongji,dadaojiaogaodewenkongjingdu。hanliaocaodewenkongjingduzuidiyingdadao±5 ℃。

体育平台网站 liu、kongzhilengquesulvtuiguangguodujieduan,wuqianhanliaoshibiyumouxieyuanqijianjiyinzhibanshangdeyouqiantucenggongtongcunzai。youyuwuqianhanliaoyexiangxianheguxiangxianwenchajiaoda,qilengquesulvyuyinzhibandelengquesulvbutong,daorexishudadechazhuangyuanjianyinxianhetonghanqufujinxianninggu,hanliaochanshengreshousuo,ershizuihouninggudedirongdianhanliaozaikaojinhanpanyicefashengboli,chuxianwuqianhanliaodehandianyuyinzhibanhanpanxiangbolixianxiang。ruocaiyonghanbidewuqianhanliaozheizhongxianxiangkenenggengweituchu。weibimianzheiyixianxiang,bofenghanjidechukouchujiazhuanglengquezhuangzhi。yibancaiyongziranfengqiangzhilengque,lengquesulvzai6~8 ℃/miaohuo8~12 ℃/miao,genjujutiqingkuangqueding。

qi、bofenghanjiewenduquxianyouhuaduiyuyouqianbofenghanlaishuo,63/37hanliaoronghuawenduwei183 ℃,hanjiefengzhiwenduwei250 ℃,qigongyichuangkouwei67 ℃。duiyuwuqianbofenghanlaishuo,sn95.5/ag4.0/cuo.5wuqianhanliaoronghuawenduwei215~220 ℃,hanjiefengzhiwenduwei250 ℃,qigongyichuangkouwei30 ℃。eryaodadaohanliaodelianghaoshirunxing,yuanqijianduantoujiyinzhibanhanpanchudeshijiwendubixudadao230 ℃yishang,cainengshixianyouxiaodihanjie,zheiyangqiyouxiaodegongyichuangkoujinwei20 ℃。xiaoxingyuanqijianjingguoyurequ、zaijingguohanjiequfengzhiwendu,henrongyijiukedadao230 ℃。dandaxingyuanqijiandewenduzheishiyuanyuanweidadao,zheijiuxuyaoyanzhangyureshijian,yibianjiangdiyuanqijianzhijiandewenducha,shidaxingyuanqijianjingguohanjiequfengzhiwendushi,qihandiandewenduyenengdadao230 ℃,suoyi,wuqianbofenghanjideyurequyaobiputongbofenghanjizhangdeduo。chulexuyaoyouzugoudeyureshijianheyurewendu、baozhengzugoudehanjieshijianwai,hanjieshibofengdefengzhiwenduyuyurewenduzhichaxiaoyu150 ℃(t3-t1<150 ℃)。

体育平台网站 tebieyaozhuyiyixiawendudian:congyureduandaohanjieqiandewendudieluo(xiajiang)zuidaxiaoyu5 ℃(dtl<5 ℃)。liangbofenghanjiezhijiandewendudieluozuidaxiaoyu50 ℃(dtl<50 ℃,gaokekaochanpindt2<30 ℃)。liangbofenghanjieshijianzhiheyibanwei4miao,budexiaoyu3miao(t2+t3>3-5miao)。