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HEATS 发表于 2010-9-12 15:13:09

保护气体中含氮量对不锈钢焊缝中铁素体含量和热裂纹倾向的影响

<TABLE class=table1 borderColor=#bcceb0 cellSpacing=0 cellPadding=0 width="90%" align=center border=1>
<TBODY>
<TR bgColor=#e9fde2>
<TH width=150 height=32 rowSpan=2>保&nbsp;&nbsp;护&nbsp;&nbsp;气&nbsp;&nbsp;体</TH>
<TH width=100 height=32 rowSpan=2>焊&nbsp;&nbsp;&nbsp;丝</TH>
<TH width=200 colSpan=2 height=16>显&nbsp;&nbsp;微&nbsp;&nbsp;组&nbsp;&nbsp;织</TH>
<TH width=200 colSpan=2 height=16>热&nbsp;&nbsp;裂&nbsp;&nbsp;纹&nbsp;&nbsp;情&nbsp;&nbsp;况</TH></TR>
<TR>
<TH width=100 height=16>单层焊</TH>
<TH width=100 height=16>多层焊</TH>
<TH width=100 height=16>单层焊</TH>
<TH width=100 height=16>多层焊</TH></TR>
<TR>
<TD align=middle width=150 height=16>Ar</TD>
<TD align=middle width=100 height=16>1Cr18Ni9Ti</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>无</TD>
<TD align=middle width=100 height=16>无</TD></TR>
<TR>
<TD align=middle width=150 height=16>Ar+O<SUB>2</SUB>5%</TD>
<TD align=middle width=100 height=16>1Cr18Ni9Ti</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>无</TD>
<TD align=middle width=100 height=16>无</TD></TR>
<TR>
<TD align=middle width=150 height=16>Ar+O<SUB>2</SUB>20%</TD>
<TD align=middle width=100 height=16>1Cr18Ni9Ti</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>方向性γ</TD>
<TD align=middle width=100 height=16>无</TD>
<TD align=middle width=100 height=16>有</TD></TR>
<TR>
<TD align=middle width=150 height=16>Ar+N<SUB>2</SUB>5%</TD>
<TD align=middle width=100 height=16>1Cr18Ni9Ti</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>γ+α</TD>
<TD align=middle width=100 height=16>有</TD>
<TD align=middle width=100 height=16>有</TD></TR>
<TR>
<TD align=middle width=150 height=16>Ar+N<SUB>2</SUB>20%</TD>
<TD align=middle width=100 height=16>1Cr18Ni9Ti</TD>
<TD align=middle width=100 height=16>α</TD>
<TD align=middle width=100 height=16>α</TD>
<TD align=middle width=100 height=16>很多</TD>
<TD align=middle width=100 height=16>很多</TD></TR>
<TR>
<TD align=middle width=150 height=16>N<SUB>2</SUB></TD>
<TD align=middle width=100 height=16>1Cr18Ni9Ti</TD>
<TD align=middle width=100 height=16>α</TD>
<TD align=middle width=100 height=16>方向性γ</TD>
<TD align=middle width=100 height=16>很多</TD>
<TD align=middle width=100 height=16>很多</TD></TR></TBODY></TABLE>
               

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