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border-left-width: 1px; border-right-style: solid; border-right-width: 1px; border-bottom-style: solid; border-bottom-width: 1px" bordercolor="#1a7db3"> <TABLE width="212" height="48" border="0" align="center" cellPadding="0" cellSpacing="0"> <TBODY> <TR> <TD align="left" vAlign="center" background="/images/contact.jpg"> <table width="210" border="0" cellpadding="0" cellspacing="0"> <tr> <td height="24"> <span><strong>沈阳威克创新焊接设备有限公司</strong></span> </td> </tr> <tr> <td height="24">电话:024-31029733 31029732</td> </tr> <tr> <td height="24">传真:024-62665536</td> </tr> <tr> <td height="24">手机:13840081050</td> </tr> <tr> <td height="24">E-mail:shenyangweike@163.com</td> </tr> <tr> <td height="24">地址:沈阳市于洪区沈大?46-2?/td> </tr> </table> </TD> </TR> </TBODY> </TABLE> </td> </tr> </table> </td> <td height="309" width="10"> </td> <td height="309" width="728" valign="top"> <table cellpadding="0" width="728" style="border-collapse: collapse; border-left-style:solid; border-left-width:1px; border-right-style:solid; border-right-width:1px; border-top-width:1px; border-bottom-style:solid; border-bottom-width:1px" height="484" bordercolor="#1A7DB3"> <tr> <td height="28" background="/images/Title07.jpg"><span class="STYLE4">    新闻中心 </span></td> </tr> <tr> <td width="728" align="center" valign="top" style="line-height: 200%; padding-left: 5px; padding-top: 5px; color:#333333"> <table width="700" border="0" align="CENTER" cellpadding="0" cellspacing="0" style="margin-top:5px;"> <tr> <td><table width="722" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="30" height="36"> </td> <td width="673" align="center" style="color:#000000; font-size:16px; font-weight:bold"> <h1>点焊机电?/h1> </td> <td width="51"> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> </tr> </table></td> </tr> <tr> <td align="center" style="color:#999999"><strong>发布时间?/strong>2016-10-19 <strong>来源?/strong>沈阳威克创新焊接设备有限公司 </td> </tr> <tr> <td height="20"> </td> </tr> <tr> <td> <p>什么是<a href="http://www.ppstonez.com">电极</a>?/p> <p>答:在点焊过程中两个电极间产生电弧放电,利用电弧的热量熔化金属达到两焊件接合的过程,焊接设备上的电源输入与输出的两个端子都叫电极?/p> <p>铬锆铜是最常见而又必不可少的东西,一个好的电极直接影响焊接整体性价与质量的标准,质量过硬的电极可以达到指标很好的平衡?/p> <p>1、优良的导电性:保证焊接回路阻抗最小化,获得优质的点焊质量?/p> <p>2、高温机械性能:比较高的软化温度保证焊接高温环境下电极材料的性能及寿命延长?/p> <p>3、较高的耐磨抗损:电极不易磨损、延长使用寿命、降低成本?/p> <p>4、较高的硬度和强度:保证电极头在一定的压力下工作不易变形压溃,保证焊接质量?/p> <p> 由于电极的接触面积决定着电流密度,电极材料的电阻率和导热性关系着热量的产生和散失,因此,电极的形状和材料对熔核的形成有显著影响。随着电极端头的变形和磨损,接触面积增大,焊点强度将降低?/p> <p>总结?/p> <p>电极是我们日常工作使用较多的材料,但是在使用过程中会遇到一些问题,比如电极粘住的情况,那是什么原因导致的呢?</p> <p>答:这是因为采用的电极材料为CUCR或者CUCUZR,材料中的CU在焊接时接触高温熔化时,镀锌板的锌zn与cu反应会生成CU与ZN的合金,而CUZN是黄铜合金的成分,在这过程产生了化学反应,损耗了电极材质,因而产生粘住现象?/p> <p>电极使用过久,表面会产生氧化层,这样会对焊接有影响,需要我们用砂纸或者锉刀修磨,但是不可以修的高低不平,也或者使用电极修磨器,它是用于焊接电极磨损后的整体修整将上下电极移动到修磨机刀头两侧,焊钳加压,同时被修磨机刀头开始旋转,切削设定的时间后,电极端面被修出新的表面,压堆变形和表面氧化层被修理掉?/p> <p> </p> <p> </p> <p> </p> <p>                            --<a href="http://www.ppstonez.com">沈阳威克创新焊接设备有限公司</a></p> </td> </tr> <tr> <td height="20"> </td> </tr> </table></td> </tr> </table> </td> </tr> </table> ?table border="0" width="970" height="68" cellspacing="1" cellpadding="0" background="/images/bott_bg.gif" align="center"> <tr> <td height="20" > <p align="center" style="padding-top:10px"> <font color="#FFFFFF">版权所?沈阳威克创新焊接设备有限公司Copyright ©2007-2018 </font> </p><br /> </td> </tr> <tr> <td> <p align="center"> 地址:沈阳市于洪区沈大路146-2?nbsp; 电话?24-31029733 31029732  传真?24-62665536  E-mail?shenyangweike@163.com   </p> </td> </tr> </table> <table border="0" width="970" height="48" cellspacing="1" cellpadding="0" align="center"> <tr> <td> <p align="center"> ICP备案号:辽ICP?2005499?/p> </td> </tr> </table> <script language="javascript" type="text/javascript" src="/wwwroot/js/1697bd6e-4713-4b18-8d92-1d4d4db3c92b-tj.js" charset="utf-8"></script><script> (function(){ var canonicalURL, curProtocol; 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