碳钢铸件的调质工艺及硬度范围
<TABLE cellSpacing=0 cellPadding=0 border=1><TBODY>
<TR>
<TD vAlign=top width=142>
<P align=center><STRONG>含碳量（％）</STRONG></P></TD>
<TD vAlign=top width=142>
<P align=center><STRONG>淬火温度／℃</STRONG></P></TD>
<TD vAlign=top width=142>
<P align=center><STRONG>回火温度／℃</STRONG></P></TD>
<TD vAlign=top width=142>
<P align=center><STRONG>回火后硬度HBS</STRONG></P></TD></TR>
<TR>
<TD vAlign=top width=142 rowSpan=5>
<P align=center>0.35~0.45</P></TD>
<TD vAlign=top width=142 rowSpan=5>
<P align=center>850~830(水淬)</P></TD>
<TD vAlign=top width=142>
<P align=center>340～400</P></TD>
<TD vAlign=top width=142>
<P align=center>364～444</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>400～450</P></TD>
<TD vAlign=top width=142>
<P align=center>321～415</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>510～550</P></TD>
<TD vAlign=top width=142>
<P align=center>241～286</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>540～580</P></TD>
<TD vAlign=top width=142>
<P align=center>228～269</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>580～640</P></TD>
<TD vAlign=top width=142>
<P align=center>192～228</P></TD></TR>
<TR>
<TD vAlign=top width=142 rowSpan=4>
<P align=center>0.45~0.55</P></TD>
<TD vAlign=top width=142 rowSpan=4>
<P align=center>830～810（水淬）</P></TD>
<TD vAlign=top width=142>
<P align=center>550～630</P></TD>
<TD vAlign=top width=142>
<P align=center>220～240</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>450</P></TD>
<TD vAlign=top width=142>
<P align=center>≈269</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>550</P></TD>
<TD vAlign=top width=142>
<P align=center>≈248</P></TD></TR>
<TR>
<TD vAlign=top width=142>
<P align=center>650</P></TD>
<TD vAlign=top width=142>
<P align=center>≈228</P></TD></TR></TBODY></TABLE>
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