<table class=" FCK__ShowTableBorders ke-zeroborder" width="95%" align="center" border="0" _fckxhtmljob="170"> <tbody _fckxhtmljob="170"> <tr _fckxhtmljob="170"> <td align="right" width="60%" _fckxhtmljob="170"><span class="JQ" _fckxhtmljob="170"><strong>D502<span _fckxhtmljob="170">阀门堆焊焊条</span></strong></span></td> <td style="padding-left:1em;vertical-align:middle;" width="40%" _fckxhtmljob="170"><strong>符合 GB EDCr-A1-03</strong></td> </tr> <tr _fckxhtmljob="170"> <td colspan="2" _fckxhtmljob="170"> <p _fckxhtmljob="170"><strong _fckxhtmljob="170">说明:</strong> D502是钛钙型药皮的1Cr13型阀门堆焊焊条，可交直流两用，焊接工艺良好。堆焊金属为1Cr13半铁素体高铬钢。堆焊层具有空淬特性，一般不须进行热处理，硬度均匀，亦可在750-800℃退火软化，当加热至900-1000℃空冷或油淬后，可重新硬化。</p> </td> </tr> <tr _fckxhtmljob="170"> <td colspan="2" _fckxhtmljob="170"> <p _fckxhtmljob="170"><strong _fckxhtmljob="170">用途:</strong> 这是一种通用性的表面堆焊用焊条，用于堆焊工作温度在450℃以下的碳钢或合金钢的轴及阀门等。</p> </td> </tr> <tr _fckxhtmljob="170"> <td class="Metal" colspan="2" _fckxhtmljob="170"><strong _fckxhtmljob="170">熔敷金属化学成分(%)</strong> <table class=" FCK__ShowTableBorders ke-zeroborder" bordercolor="#d4d0c8" cellspacing="1" width="100%" bgcolor="#000000" border="0" _fckxhtmljob="170"> <tbody _fckxhtmljob="170"> <tr bgcolor="#cccccc" _fckxhtmljob="170"> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">化学成分</div> </td> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">C</div> </td> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">S</div> </td> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">P</div> </td> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">Cr</div> </td> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">其它元素总量</div> </td> </tr> <tr bgcolor="#ffffff" _fckxhtmljob="170"> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">保证值</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">≤0.15</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">≤0.030</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">≤0.040</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">10.0~16.0</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">≤2.50</div> </td> </tr> </tbody> </table> </td> </tr> <tr _fckxhtmljob="170"> <td colspan="2" _fckxhtmljob="170"><strong _fckxhtmljob="170">堆焊层硬度:</strong> （焊后空冷）HRC≥40</td> </tr> <tr _fckxhtmljob="170"> <td colspan="2" _fckxhtmljob="170"><strong _fckxhtmljob="170">参考电流</strong> (AC、DC) <table class=" FCK__ShowTableBorders ke-zeroborder" bordercolor="#d4d0c8" cellspacing="1" width="100%" bgcolor="#000000" border="0" _fckxhtmljob="170"> <tbody _fckxhtmljob="170"> <tr bgcolor="#cccccc" _fckxhtmljob="170"> <td height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">焊条直径(mm)</div> </td> <td valign="bottom" height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">φ2.5</div> </td> <td valign="bottom" height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">φ3.2</div> </td> <td valign="bottom" height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">φ4.0</div> </td> <td valign="bottom" height="20" _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">φ5.0</div> </td> </tr> <tr bgcolor="#ffffff" _fckxhtmljob="170"> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">焊接电流(A)</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">50~80</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">80~120</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">120~160</div> </td> <td _fckxhtmljob="170"> <div align="center" _fckxhtmljob="170">160~200</div> </td> </tr> </tbody> </table> </td> </tr> <tr _fckxhtmljob="170"> <td valign="top" colspan="2" _fckxhtmljob="170"><strong _fckxhtmljob="170">注意事项</strong>:<br _fckxhtmljob="170" /> 1.焊前焊条须经150℃左右烘焙1h。<br _fckxhtmljob="170" /> 2.焊前需将工件预热至300℃以上，焊后进行不同热处理可获得相应的硬度。</td> </tr> </tbody> </table>