国内向种新型基体钢的热处理规范
<TABLE class=table1 borderColor=#b5dba2 cellSpacing=0 cellPadding=0 width="98%" border=1><TBODY>
<TR>
<TD width="6%" bgColor=#e9fde4 rowSpan=3>
<DIV align=center>钢 种</DIV></TD>
<TD bgColor=#e9fde4 colSpan=5>
<DIV align=center>退 火 处 理</DIV></TD>
<TD bgColor=#e9fde4 colSpan=2>
<DIV align=center>淬火处理</DIV></TD>
<TD bgColor=#e9fde4 colSpan=6>
<DIV align=center>回 火 处 理</DIV></TD></TR>
<TR>
<TD bgColor=#e9fde4 colSpan=2>
<DIV align=center>加 热</DIV></TD>
<TD bgColor=#e9fde4 colSpan=2>
<DIV align=center>球 化</DIV></TD>
<TD width="8%" bgColor=#e9fde4 rowSpan=2>
<DIV align=center>硬度<BR>（HB）</DIV></TD>
<TD width="8%" bgColor=#e9fde4 rowSpan=2>
<DIV align=center>加热温度<BR>（℃）</DIV></TD>
<TD width="8%" bgColor=#e9fde4 rowSpan=2>
<DIV align=center>加热系数<BR>（S/mm）</DIV></TD>
<TD bgColor=#e9fde4 colSpan=3>
<DIV align=center>第一次回火</DIV></TD>
<TD bgColor=#e9fde4 colSpan=3>
<DIV align=center>第二～三次回火</DIV></TD></TR>
<TR>
<TD width="6%" bgColor=#e9fde4>
<DIV align=center>温度<BR>（℃）</DIV></TD>
<TD width="5%" bgColor=#e9fde4>
<DIV align=center>时间<BR>（h）</DIV></TD>
<TD width="6%" bgColor=#e9fde4>
<DIV align=center>温度<BR>（℃）</DIV></TD>
<TD width="6%" bgColor=#e9fde4>
<DIV align=center>时间<BR>（h）</DIV></TD>
<TD width="8%" bgColor=#e9fde4>
<DIV align=center>温度<BR>（℃）</DIV></TD>
<TD width="8%" bgColor=#e9fde4>
<DIV align=center>时间<BR>（min）</DIV></TD>
<TD width="8%" bgColor=#e9fde4>
<DIV align=center>冷却方式</DIV></TD>
<TD bgColor=#e9fde4>
<DIV align=center>温度<BR>（℃）</DIV></TD>
<TD width="8%" bgColor=#e9fde4>
<DIV align=center>时间<BR>（min）</DIV></TD>
<TD width="8%" bgColor=#e9fde4>
<DIV align=center>冷却方式</DIV></TD></TR>
<TR>
<TD width="6%">
<DIV align=center>CG-2</DIV></TD>
<TD width="6%">
<DIV align=center>810</DIV></TD>
<TD width="5%">
<DIV align=center>2～3</DIV></TD>
<TD width="6%">
<DIV align=center>660</DIV></TD>
<TD width="6%">
<DIV align=center>4～6</DIV></TD>
<TD width="8%">
<DIV align=center>241～270</DIV></TD>
<TD width="8%">
<DIV align=center>1100</DIV></TD>
<TD width="8%">
<DIV align=center>18～25</DIV></TD>
<TD width="8%">
<DIV align=center>540</DIV></TD>
<TD width="8%">
<DIV align=center>120</DIV></TD>
<TD width="8%">
<DIV align=center>空</DIV></TD>
<TD width="7%">
<DIV align=center>540</DIV></TD>
<TD>
<DIV align=center>120</DIV></TD>
<TD>59～62</TD></TR>
<TR>
<TD width="6%">
<DIV align=center>O12Al</DIV></TD>
<TD width="6%">
<DIV align=center>860</DIV></TD>
<TD width="5%">
<DIV align=center>4</DIV></TD>
<TD width="6%">
<DIV align=center>710～720</DIV></TD>
<TD width="6%">
<DIV align=center>6</DIV></TD>
<TD width="8%">
<DIV align=center>200～230</DIV></TD>
<TD width="8%">
<DIV align=center>1100</DIV></TD>
<TD width="8%">
<DIV align=center>30</DIV></TD>
<TD width="8%">
<DIV align=center>510</DIV></TD>
<TD width="8%">
<DIV align=center>120</DIV></TD>
<TD width="8%">
<DIV align=center>油</DIV></TD>
<TD width="7%">
<DIV align=center>540</DIV></TD>
<TD>
<DIV align=center>90</DIV></TD>
<TD>60～62</TD></TR>
<TR>
<TD width="6%">
<DIV align=center>65Nb</DIV></TD>
<TD width="6%">
<DIV align=center>860</DIV></TD>
<TD width="5%">
<DIV align=center>2</DIV></TD>
<TD width="6%">
<DIV align=center>740</DIV></TD>
<TD width="6%">
<DIV align=center>5～6</DIV></TD>
<TD width="8%">
<DIV align=center>183～207</DIV></TD>
<TD width="8%">
<DIV align=center>1150</DIV></TD>
<TD width="8%">
<DIV align=center>15</DIV></TD>
<TD width="8%">
<DIV align=center>540</DIV></TD>
<TD width="8%">
<DIV align=center>90</DIV></TD>
<TD width="8%">
<DIV align=center>空</DIV></TD>
<TD width="7%">
<DIV align=center>540</DIV></TD>
<TD>
<DIV align=center>90</DIV></TD>
<TD>58～60</TD></TR>
<TR>
<TD width="6%">
<DIV align=center>LD1</DIV></TD>
<TD width="6%">
<DIV align=center>850</DIV></TD>
<TD width="5%">
<DIV align=center>2～3</DIV></TD>
<TD width="6%">
<DIV align=center>740</DIV></TD>
<TD width="6%">
<DIV align=center>4～6</DIV></TD>
<TD width="8%">
<DIV align=center>210～240</DIV></TD>
<TD width="8%">
<DIV align=center>1100</DIV></TD>
<TD width="8%">
<DIV align=center>25</DIV></TD>
<TD width="8%">
<DIV align=center>540</DIV></TD>
<TD width="8%">
<DIV align=center>120</DIV></TD>
<TD width="8%">
<DIV align=center>空</DIV></TD>
<TD width="7%">
<DIV align=center>540</DIV></TD>
<TD>
<DIV align=center>90</DIV></TD>
<TD>59～62</TD></TR>
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<TD width="6%"></TD>
<TD width="6%"></TD>
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<TD width="6%"></TD>
<TD width="6%"></TD>
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<DIV class=blk14 align=left>注：</DIV>
<DIV class=blk14 align=left>1.退火加热后以30℃/h的速度冷至球化温度。</DIV>
<DIV class=blk14 align=left>2.淬火加热前，在800～850℃或500℃及800～850℃进行一次或一至二次预热，预热时间为淬火加热时间的2倍以上，加热后进行油冷。</DIV>
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