硅酸锰焊剂的典型成分
<DIV align=center>硅酸锰焊剂的典型成分</DIV><DIV align=center>
<TABLE cellSpacing=0 cellPadding=0 width="90%" border=1>
<TBODY>
<TR>
<TD>
<DIV align=center><B>材</B><B> </B><B>料</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>熔炼焊剂</B><B></B></DIV></TD>
<TD>
<DIV align=center><B>粘结焊剂</B><B></B></DIV></TD></TR>
<TR>
<TD>
<DIV align=center>MnO</DIV></TD>
<TD>
<DIV align=center>42.0</DIV></TD>
<TD>
<DIV align=center>36.5</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>MnO<SUB>2</SUB></DIV></TD>
<TD>
<DIV align=center> </DIV></TD>
<TD>
<DIV align=center>5.2①</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>SiO<SUB>2</SUB></DIV></TD>
<TD>
<DIV align=center>45.0</DIV></TD>
<TD>
<DIV align=center>38.0</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>CaF<SUB>2</SUB></DIV></TD>
<TD>
<DIV align=center>6.9</DIV></TD>
<TD>
<DIV align=center>3.9</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>CaO</DIV></TD>
<TD>
<DIV align=center>1.2</DIV></TD>
<TD>
<DIV align=center>0.8</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>MgO</DIV></TD>
<TD>
<DIV align=center>0.3</DIV></TD>
<TD>
<DIV align=center>2.7</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>BaO</DIV></TD>
<TD>
<DIV align=center>0.1</DIV></TD>
<TD>
<DIV align=center>0.3</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>Al<SUB>2</SUB>O<SUB>3</SUB></DIV></TD>
<TD>
<DIV align=center>2.0</DIV></TD>
<TD>
<DIV align=center>1.1</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>FeO</DIV></TD>
<TD>
<DIV align=center>1.5</DIV></TD>
<TD>
<DIV align=center> </DIV></TD></TR>
<TR>
<TD>
<DIV align=center>Fe<SUB>2</SUB>O<SUB>3</SUB></DIV></TD>
<TD>
<DIV align=center> </DIV></TD>
<TD>
<DIV align=center>2.7</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>TiO<SUB>2</SUB></DIV></TD>
<TD>
<DIV align=center>0.1</DIV></TD>
<TD>
<DIV align=center>0.1</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>K<SUB>2</SUB>O</DIV></TD>
<TD>
<DIV align=center>0.4</DIV></TD>
<TD>
<DIV align=center> </DIV></TD></TR>
<TR>
<TD>
<DIV align=center>Na<SUB>2</SUB>O</DIV></TD>
<TD>
<DIV align=center>0.4</DIV></TD>
<TD>
<DIV align=center>1.5</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>PbO</DIV></TD>
<TD>
<DIV align=center>0.1</DIV></TD>
<TD>
<DIV align=center>0.1</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>FeSi(50%)</DIV></TD>
<TD>
<DIV align=center> </DIV></TD>
<TD>
<DIV align=center>7.1②</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>MnO/SiO<SUB>2</SUB>比值</DIV></TD>
<TD>
<DIV align=center>42.0/45.0=0.98</DIV></TD>
<TD>
<DIV align=center>40.7/45.6=0.89</DIV></TD></TR></TBODY></TABLE></DIV>
<DIV align=center> </DIV>
<DIV>注: ① 在焊接温度下,MnO2与硅铁中的硅起反应,生成MnO,等于焊剂总量的4.2%(0.815×5.2%=4.2%)。</DIV>
<DIV> ② 硅铁中的硅与MnO2在焊接温度下起反应,生成SiOO2,等于焊剂总量的7.6%(2.14×7.1%÷2=7.6%)。</DIV>
<DIV> </DIV>
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