8号彩票上光大gd567

  • 镀锌方矩管如何加工电镀

    发布日期:2017-05-17

    镀锌方矩管如何加工电镀

    8号彩票上光大gd567DUXINFANGJUGUANJIAGONGYENEIRENSHIZHOUXIANSHENGBIAOSHI,DUXINFANGJUGUANYOUYUJUYOUYOULIANGDENAISHIXING、SHENJIAGONGCHENGXINGXING、TUQIXINGHEHANJIEXING,YIJILIANGHAODEBIAOMIANZHILIANGHEZONGHELIXUEXINGNENGERBEIGUANGFANYONGYUJIANZHUGANGJIEGOU,QICHEZHIZAO,JIXIEZHIZAO,QIAOLIANGGOUZAO,JIZHUANGXIANGLONGGU,CHUANBOZHIZAODENGLINGYU。 

    8号彩票上光大gd567DUXINFANGJUGUANJIAGONGSHILIYONGDIANJIEDEYUANLI,TONGGUOJINSHULIZIDEDIANJIEGUOCHENGZAICHANPINBIAOMIANCHENJIYICENGJINSHUHUOHEJINCENG,YIGAIBIANCHANPINBIAOMIANWULIHEHUAXUEXINGNENG,   ZHONGSHIDEDUXINBANJUYOUNAIMOXING、ZHUANGSHIXINGHENAICHONGJIXINGDENG,CIWAIHAINENGGOUGENJUJUTICHANPINDETESHUYAOQIUERTUFUMOUZHONGTEDINGDEDUCENG,RUGUANGNENGXINGHEDIANCIXINGDUCENGDENG,ZHEIYANGKECHONGFENKUODADUXINFANGJUGUANDEYINGYONGLINGYU。 

    DUXINFANGJUGUANSHENGCHANGUIGEWEI:FANGGUAN:20×20×1.3~500×500×16mm;JUXINGGUAN:20×30×1.3~400×600×16mm .

    镀锌方矩管加工电镀工艺主要有预处理、电镀及镀后处理等过程,镀层的质量取决于材料的电镀过程,而电镀过程又受很多因素的影响,归纳六大因素如下: 

    1、锌含量:锌块的锌纯度越高,其光亮范围越窄,汽车板就   易获得较厚的镀层,镀层中铁含量也会较低;当锌块的纯度太低时,其光亮范围会较宽,要达到规定的锌层厚度就需要   长的时间,这就会导致镀锌层中铁含量较高。 

    2、氢氧化钠:氢氧化钠对反应具有双重影响,当其含量太高时,高温操作过程中易出现烧焦现象;而其含量过低时,溶液分散能力较差,这样会降低锌层的质量。 

    3、铁含量:当铁含量太高时,镀层中的铁会相应较多,会导致产品钝化膜光亮度不足;而铁含量太低则会导致镀锌层中铁含量较低,降低汽车板的耐蚀性,且会导致汽车板表面偏橄榄色。 

    4、光亮剂:现在使用较多的光亮剂由ZF-100A和ZF-100B混合组成,前者浓度太高会增强镀层的脆性,而太低会造成低电流区的镀层较为稀疏,出现钝化不均现象。 

    5、温度:电镀过程中温度太高会导致溶液分散能力下降,镀层中铁含量升高,钝化不均匀;而反应温度过低时,高电流密度区会容易烧焦,镀层脆性较大且沉积速度较慢。 

    6、阴极移动速度:电镀过程中   保证阴极处于移动状态,如果移动速度太快,电镀过程中高电流密度区镀层会较粗糙;而移动速度太慢又可能产生气流,造成了材料镀层的不均。 

    镀锌方矩管是采用锌作为电镀金属,在溶液中电解出Zn2+,然后在镀锌方矩管表面沉积,形成一层均匀而致密的锌金属层。与其他金属相比,锌属于一种两性金属,既易溶于酸,也能溶于碱,在溶液中   易电解出金属离子。镀锌方矩管加工过程中应在以上方面加以注意,以生产出   的合格镀锌方矩管产品。

    8号彩票上光大gd567FANGJUGUANDUXINGUOCHENGZHONG,WOMENYINGGAIZHUYIYIXIAWUDIANSHIXIANG:

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