铸件壁厚的过渡形式与尺寸
<TABLE height=0 cellSpacing=0 cellPadding=0 width=0 align=left border=0><TBODY>
<TR>
<TD width="100%"></TD></TR></TBODY></TABLE>壁厚的过渡形式与尺寸（单位mm）
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<TBODY>
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<TD vAlign=top width="5%">
<DIV>图例</DIV></TD>
<TD vAlign=top width="94%" colSpan=13>
<DIV>过渡尺寸</DIV></TD></TR>
<TR>
<TD vAlign=top width="5%" rowSpan=3>
<DIV><IMG alt="" src="http://www.chmcw.com/upload/news/RCL/13220_qyuyy320051121152413793.gif" border=0></DIV></TD>
<TD vAlign=top width="8%" rowSpan=3>
<DIV>b≤2a</DIV></TD>
<TD vAlign=top width="10%">
<DIV>铸铁</DIV></TD>
<TD vAlign=top width="75%" colSpan=11>
<DIV>R≥（（1/3）（1/2））（（a+b）/2）</DIV></TD></TR>
<TR>
<TD vAlign=top width="10%" rowSpan=2>
<DIV align=center>铸钢</DIV>
<DIV align=center>可锻铸铁</DIV>
<DIV align=center>非铁合金</DIV></TD>
<TD width="8%">
<DIV align=center>(a+b）/2</DIV></TD>
<TD width="4%">
<DIV align=center><12</DIV></TD>
<TD width="6%">
<DIV align=center>12～16</DIV></TD>
<TD width="6%">
<DIV align=center>16～20</DIV></TD>
<TD width="6%">
<DIV align=center>25～27</DIV></TD>
<TD width="6%">
<DIV align=center>27～35</DIV></TD>
<TD width="6%">
<DIV align=center>35～45</DIV></TD>
<TD width="6%">
<DIV align=center>45～60</DIV></TD>
<TD width="6%">
<DIV align=center>60～80</DIV></TD>
<TD width="6%">
<DIV align=center>80～110</DIV></TD>
<TD width="7%">
<DIV align=center>110～150</DIV></TD></TR>
<TR>
<TD width="8%">
<DIV align=center>R</DIV></TD>
<TD width="4%">
<DIV align=center>6</DIV></TD>
<TD width="6%">
<DIV align=center>8</DIV></TD>
<TD width="6%">
<DIV align=center>10</DIV></TD>
<TD width="6%">
<DIV align=center>12</DIV></TD>
<TD width="6%">
<DIV align=center>15</DIV></TD>
<TD width="6%">
<DIV align=center>20</DIV></TD>
<TD width="6%">
<DIV align=center>25</DIV></TD>
<TD width="6%">
<DIV align=center>30</DIV></TD>
<TD width="6%">
<DIV align=center>35</DIV></TD>
<TD width="7%">
<DIV align=center>40</DIV></TD></TR>
<TR>
<TD vAlign=top width="5%" rowSpan=2>
<DIV><IMG alt="" src="http://www.chmcw.com/upload/news/RCL/13220_5oeaqu20051121152428894.gif" border=0></DIV></TD>
<TD vAlign=top width="8%" rowSpan=2>
<DIV>b>2a</DIV></TD>
<TD vAlign=top width="10%">
<DIV align=center>铸铁</DIV></TD>
<TD vAlign=top width="75%" colSpan=11>
<DIV align=center>L≥4(b-a)</DIV></TD></TR>
<TR>
<TD vAlign=top width="10%">
<DIV align=center>铸钢</DIV></TD>
<TD vAlign=top width="75%" colSpan=11>
<DIV align=center>L≥5(b-a)</DIV></TD></TR>
<TR>
<TD vAlign=top width="5%">
<DIV><IMG alt="" src="http://www.chmcw.com/upload/news/RCL/13220_o5paju20051121152441464.gif" border=0></DIV></TD>
<TD vAlign=top width="8%">
<DIV>b≤1.5a</DIV></TD>
<TD width="86%" colSpan=12>
<DIV align=center>R≥（2a+b）/2</DIV></TD></TR>
<TR>
<TD vAlign=top width="5%">
<DIV><IMG alt="" src="http://www.chmcw.com/upload/news/RCL/13220_jr5hel20051121152457913.gif" border=0></DIV></TD>
<TD vAlign=top width="8%">
<DIV>b>1.5a</DIV></TD>
<TD vAlign=top width="86%" colSpan=12>
<DIV align=center>L=4(b+a)</DIV></TD></TR></TBODY></TABLE>
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