Does not have the lead 烙铁�?/title> <meta name="Keywords" content=" 无铅烙铁�?> <meta name="description" content=""> <link href="/templets/css/css.css" rel="stylesheet" type="text/css"> </head>  <body> <table cellspacing="0" cellpadding="0" width="770" bgcolor="#ffffff" align="center" border="0"> <tbody> <tr> <td colspan="5" height="25"> <table height="100%" cellspacing="0" cellpadding="0" width="100%" border="0"> <tbody> <tr> <td align="left" width="185"><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2f">Home page</a> | <a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2f">news</a> | <a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fSupply%2f">supply and demand</a> | <a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fdown%2f">downloading</a></td> <td width="269" background="/imgs/Top_04.gif"><script src="/top/top.js" type="text/JavaScript"></script></td> <td width="13" background="/imgs/Top_02.gif"></td> <td width="84" background="/imgs/Top_03.gif"></td> <td width="14" background="/imgs/Top_01.gif"></td> <td width="205">Today is:<script language="JavaScript" src="/Templets/date2.js" type="text/JavaScript"></script> </td> </tr> </tbody> </table></td> </tr> <tr> <td width="9" background="/imgs/LogoLeft.gif" height="60"></td> <td width="120" background="/imgs/LogoCenter.gif"><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2f"> <img height="40" src="/imgs/ELogo.gif" width="120" border="0" /></a></td> <td width="9" background="/imgs/LogoRight.gif"></td> <td id="top_480_60" align="middle" width="480">Automation in line number according to increase in... </td> <td id="top_180_60" align="middle" width="152">In data increase...</td> </tr> </tbody> </table> <table width="770" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#4A5575"> <tr> <td width="6" height="25" background="/imgs/top_3_L.jpg"></td> <td width="749" align="right" valign="middle" background="/imgs/top_3.jpg" class="B12"><script src="/top/main_770_252.js"></script><a class="Channel" href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2f">Home page</a> <a class="Channel" href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fBBS">forum</a> <a class="Channel" href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2f">news</a> </td> <td width="6" background="/imgs/top_3_R.jpg"></td> </tr> </table> <table width="770" border="0" align="center" cellpadding="1" cellspacing="1" bgcolor="#495474"> <tr> <td align="left" bgcolor="#FFFFFF" >Current position:<a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fdefault.html" class="pp" target="_self">Home page</a> >> <a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2findex.html" class="pp" target="_self">news</a> >> <a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2ffactory%2fIndex.html" class="pp" target="_self">factory automation</a> >> <a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2fIndex.html" class="pp" target="_self">electric appliance</a> >> main text</td> </tr> </table> <table width="770" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td bgcolor="#FFFFFF" id="main_700_60">In data increase......</td> </tr> </table> <table width="770" border="0" align="center" cellpadding="1" cellspacing="1" bgcolor="#C5CCDF"> <tr> <td width="570" valign="top" bgcolor="#FFFFFF"><br><table style="WORD-BREAK: break-all" cellspacing=0 width="100%" border=0> <tbody> <tr> <td class=titleNews align=middle>Does not have the lead 烙铁�?/td></tr> <tr> <td align=right>Origin: Input time: 07-06-10 02:00:02<a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fEN%2f19227.html" target=_blank><font color=#ff0000>English version</font></a></td></tr> <tr> <td class=ContentNews valign=top align=left height=1><br>First, non- lead soldering tin question spot:<br> The melting point high (Sn/Pb soldering tin high 30-40), the tin silk is not easier than to melt;<br> 烙铁�?the consumption changes quickly;<br> 烙铁�?the oxidation changes quickly;<br> Infiltrates the nature, delays the change in sexuality to be bad;<br> Easy to appear the tin to have, to short-circuit and so on the phenomenon;<br> Second, 烙铁�?consumption principle:<br> Ferroguinous material by tin silk in tin corrosion fuse;<br> 烙铁�?the coating iron (Fe) forms the compound with the tin;<br> After does not have in the lead tin silk the tin content to increase, corrodes the increase;<br> After does not have the lead, the welding temperature increases, enhancement 烙铁�?corrosion;<br> Third, time non- lead soldering tin use limelight:<br> 1. 烙铁�?temperature management count for much;<br> 2. Uses the hot reply and so on the thermal properties good electric iron;<br> When uses the non- lead soldering tin carries on the welding work, as a result of to components thermal stability, security work consideration, 烙铁�?hypothesis temperature general hope below 350 - 370.<br> 3. has the necessity to designate appropriately 烙铁�?<br> According to the electric iron different welding work difference, chooses appropriately 烙铁�?is very important.<br> Appropriate 烙铁�?may reduce 烙铁�?temperature, increase work efficiency.<br> 4. 烙铁�?maintenances also count for much;<br> �?with the sponge which ordinary contains water is different, must use soaks helps the medicinal preparation the tinsel, namely does not reduce 烙铁�?temperature, also may play the clean role, but also may except 烙铁�?the superficial oxide compound.<br> �?establishes as far as possible 烙铁�?low temperature.<br> When �?above 10 minutes does not use, should 切断�?the iron power source.<br> When �?烙铁�?the oxidation changes black, first uses 助焊�?soldering tin except oxide compound. If cannot except the time, first uses to soak helps the medicinal preparation the tinsel cleaner the superficial oxide compound except that, then spreads the new soldering tin.<br> Non- lead soldering tin use method:<br> As far as possible carries on the welding work by the low temperature, thorough realization 烙铁�?maintenance</td></tr> <tr> <td></td></tr> <tr> <td></td></tr> <tr> <td align=right>Chief-editor: Article author:</td></tr></tbody></table> <br> <table width="100%" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td height="13" bgcolor="#FFFFFF" id="maindown_500_60">In data increase......</td> </tr> </table> <br> <div align="left"><font style="FONT-FAMILY: Courier New"><strong><font color="#0000FF" size="3">Hot spot article</font></strong> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102391.html">The principle light (Ricoh) chooses FRAM to apply to the multi-purpose printer and the laser printer</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102456.html">Chinese and foreign cooperation electrical machinery electricity saving</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102165.html">Correct pressure-tight box choice of material method</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102968.html">Commonly used transformer type and characteristic</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102612.html">DCSI chooses RAMTRON the poss ferroelectric random access memory to use in the North America electron long-distance to copy the table system</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102903.html">Pumping unit electricity saving special-purpose POWERBOSS electrical machinery electricity saving</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102232.html">The super capacitor improves the automobile to start the performance</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102907.html">Constant pressure water supply electricity saving system</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102744.html">Super electric capacity application - intelligence water meter</a> <br><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fAppliances%2f2007-6%2f10%2f076102411.html">软起�?characteristic and its application</a> </font></div></td> <td width="201" valign="top" bgcolor="#F5F7F8" id="main_200_600"> In data increase......</td> </tr> </table> <table cellspacing="0" cellpadding="0" width="770" align="center" border="0"> <tbody> <tr> <td width="22" background="/templets/images/left.gif" rowspan="2"></td> <td class="H12" background="/templets/images/link-bg-2.gif"> <table cellspacing="1" cellpadding="4" width="760" bgcolor="#5a6d7e" border="0"> <tbody> <tr> <td background="/templets/images/link-bg-3.gif" height="26"> <table cellspacing="1" cellpadding="0" width="760" bgcolor="#455563" border="0"> <tbody> <tr> <td class="B12" align="middle" bgcolor="#566778" height="16"> <script src="/top/foot2.js"> </script><a href="http://www.autooo.net/EN.asp?trurl=http%3a%2f%2fwww.autooo.net%2fHtml%2fSpecial_SiteMap.html"><font color="#ffffff">Website map</font></a></td> </tr> </tbody> </table></td> </tr> </tbody> </table></td> <td width="22" background="/templets/images/right.gif" rowspan="2"></td> </tr> <tr> <td class="H12" align="middle" background="/templets/images/link-bg-4.gif" height="92">Copyright 2006-2008 <script src="/top/Autooo.js"></script> </td> </tr> </tbody> </table> <script language="JavaScript" src="/top/innerhtml.js" type="text/javascript"></script> <script src="/top/top_480_60.js"></script> <script src="/top/top_180_60.js"></script> <script src="/top/main_700_600.js"></script> <script src="/top/main_200_600.js"></script> <script src="/top/maindown_500_60.js"></script> <script src="/top/count.js"></script> </body> </html> <script> var r=Math.random(); document.write("<img width=1 height=1 src=http://count.yisou.yahoo.com/search/web?s=2022243289&t="+r+">"); </script> <noscript> <img width=1 height=1 src=http://count.yisou.yahoo.com/search/web?s=2022243289&t=1510977325> </noscript>