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新闻详情

高温标签在SMT印刷电路板制造过程中的应用

发表时间:2019-12-05 14:44


高温标签在SMT印刷电路板制造过程中所要经历的挑战

HANJIEJISHUZAIDIANZICHANPINDESMTZHUANGPEIZHONGZHANYOUJIQIZHONGYAODEDIWEI。

一般焊接分为两大类:

四人斗地主YILEISHIZHUYAOSHIYONGYUCHUANKONGCHAZHUANGLEIDIANZIYUANQIJIANYUDIANLUBANDEHANJIE—BOFENGHAN(wavesoldering);

四人斗地主LINGYILEISHIZHUYAOSHIYONGYUBIAOMIANTIEZHUANGYUANQIJIANYUDIANLUBANDEHANJIE—HUILIUHAN(reflow soldering),YOUCHENGHUILIUHAN。ZAIXUANZEHESHIDECHANPINZHIQIAN,LIJIEGAOWENBIAOQIANZAIZHEIXIEGUOCHENGZHONGSUOXUYAONAISHOUDEKEKEHUANJINGJIUXIANDESHIFENZHONGYAO。

WENDUSHIBAOZHENGHANJIEZHILIANGDEGUANJIAN,HUILIUHANJIEGUOCHENGZHONGSUOJINGLIDEWENDUBIANHUATONGCHANGBAOHANDUOGEJIEDUANHUOQUYU(JIANXIATU)。


05回流焊温度曲线


四人斗地主YINSHUADIANLUBAN(PCB)ZAIJINRUYUREJIEDUANQIAN,HUIZAIHANPANSHANGTUSHANGYOUFENMOZHUANGHANLIAOHEJINYUYETAIZHUHANJIHUNHEERCHENGDEXIGAO,YIBANGZHUDIANZIYUANJIANFUZHEDAODIANLUBAN。SUIHOU,DIANLUBANJINRUZUIGAOWENDUDA150°CDEYUREXUNHUAN(ZAIYI

05波峰焊温度曲线

些应用中可能有热浸泡阶段,来帮助排除挥发性物质并激活助焊剂)。接着,PCB被加热至焊料的熔点,熔化的焊料会永久性地粘结住元件的接点。在此过程中,PCB会暴露于230~265°C左右的峰值温度下(有些制造商已过渡到使用锡/铜焊接,它们与含银的无铅锡膏焊相比要更加节省成本,但所需的暴露极值温度最高可达到280°C),在冷却回到常温后,PCB会经历使用腐蚀性化学清洗剂的清洗过程。在极端应用中,整个过程可能要多次重复,因此标签需要极为耐用,包括耐高温性能、耐腐蚀性和打印后对碳粉的吸附性能。

如果需要在波峰焊环境中使用耐高温标签四人斗地主时,标签完全暴露在波峰焊环境中会有可能与焊锡膏、助焊剂等接触高腐蚀性化学品接触,且一般情况下波峰焊的温度要更高,极限温度会达到320°C,因此对标签的性能要求会更高、更苛刻;

无论是‘回流焊’还是‘波峰焊’,针对此类应用环境较中的耐高温、耐腐蚀、耐清洗性能要求,深圳万瑞科技均有相对应的耐高温标签产品,为您提供专业、优质、可靠的保障!



上海铭韵科技有限公司,高温标签,高温贴纸,高温条码标签,耐高温防静电标签,pcb标签,brady标签,polyonics标签,线路板标签,阻燃标签,防静电标签,贝迪标签,低温标签,冻存管标签,采血管标签,血袋标签,医疗标签,硫化标签,轮胎标签,强粘标签,抗油标签

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