上海铁岛实业有限公司

<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:149.7pt;mso-char-indent-count:14.2;"><span style="font-size:small;"><b style="mso-bidi-font-weight:normal;"><span lang="EN-US" style="color:red;mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">LD</span></span></b><b style="mso-bidi-font-weight:normal;"><span style="color:red;font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">新型冷作模具钢</span></b><b style="mso-bidi-font-weight:normal;"><span lang="EN-US" style="color:red;mso-bidi-font-size:10.5pt;"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></b></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-family:宋体;mso-bidi-font-family:宋体;"><span style="font-size:small;">（<span lang="EN-US">1</span>）<b style="mso-bidi-font-weight:normal;">模具钢的特性 </b><span lang="EN-US"><span style="mso-spacerun:yes;">&nbsp;</span>7Cr7Mo2V2Si</span>钢代号<span lang="EN-US">LD</span>，<span lang="EN-US">LD1</span>，国内研制的新型高强韧特种耐磨冷冲模具钢，按其用途而取“冷镦”（<span lang="EN-US">Leng Dun</span>）两个汉语拼音字头为其代号，<span lang="EN-US">LD</span>原为系列钢号，分<span lang="EN-US">LD1</span>，<span lang="EN-US">LD2</span>等，但在实际应用中以<span lang="EN-US">LD1</span>为最佳，其余较少推广应用，故仍用<span lang="EN-US">LD</span>代号表示。该钢在保持较高韧性的情况下，其抗压强度、抗弯强度、耐磨性等较<span lang="EN-US">65Nb</span>优良，并在<span lang="EN-US">JB/T 6058</span>文件中推荐了该钢号。<span lang="EN-US"><o:p></o:p></span></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-family:宋体;">该钢最初是针对冷镦模具而研制的。其碳含量低于<span lang="EN-US">G.Steven</span>推荐的“平衡碳”规律，使钢在具有高硬度的同时，又具有较好的韧性；加入<span lang="EN-US">Cr</span>、<span lang="EN-US">Mo</span>、<span lang="EN-US">V</span>元素，有利于二次硬化，保证钢具有较高的硬度、强度和良好的耐磨性；加入一定量的<span lang="EN-US">Si</span>，以强化基体，提高回火稳定性。<span lang="EN-US">LD</span>钢在<span lang="EN-US">1100</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃淬火后的组织为细针马氏体</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">+</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">残留奥氏体</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">+</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">剩余碳化物，晶粒度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">10.5</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">级。经</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1100</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃淬火、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">570</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃回火后的组织为回火马氏体</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">+</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">残余碳化物。该钢退火软化性很好。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-family:宋体;">（<span lang="EN-US">2</span>）<b style="mso-bidi-font-weight:normal;">供货状态</b><span lang="EN-US"><span style="mso-spacerun:yes;">&nbsp; </span></span>退火态</span><span style="font-family:宋体;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">。</span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">（</span><span lang="EN-US"><span style="font-family:'Times New Roman';">3</span></span><span style="font-family:宋体;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">）<b style="mso-bidi-font-weight:normal;">主要</b></span><b style="mso-bidi-font-weight:normal;"><span style="font-family:宋体;mso-bidi-font-family:宋体;">化学成分</span></b><span style="font-family:宋体;mso-bidi-font-family:宋体;">（质量分数，<span lang="EN-US">%</span>）<span lang="EN-US"><span style="mso-spacerun:yes;">&nbsp; </span>C 0.70</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">0.80</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span style="font-family:'Times New Roman';"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;">Si</span><span lang="EN-US"> </span></span><span lang="EN-US" style="font-family:宋体;mso-bidi-font-family:宋体;">0.70</span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1.20</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Mn</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">≤</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">0.40</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr </span></span><span lang="EN-US" style="font-family:宋体;mso-bidi-font-family:宋体;">6.50</span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">7.50</span></span><span style="font-family:宋体;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Mo </span></span><span lang="EN-US" style="font-family:宋体;mso-bidi-font-family:宋体;">2.00</span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2.50</span></span><span style="font-family:宋体;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">。</span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">（</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">）<b style="mso-bidi-font-weight:normal;">热加工规范</b></span><span style="font-family:'Times New Roman';"><b style="mso-bidi-font-weight:normal;"><span style="mso-bidi-font-size:10.5pt;"> </span></b><span style="mso-bidi-font-size:10.5pt;"><span style="mso-spacerun:yes;">&nbsp;</span></span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">加工温度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">850</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1120</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃，缓慢砂冷。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">（</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">5</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">）<b style="mso-bidi-font-weight:normal;">退火规范</b></span><span style="font-family:'Times New Roman';"><b style="mso-bidi-font-weight:normal;"><span style="mso-bidi-font-size:10.5pt;"> </span></b><span style="mso-bidi-font-size:10.5pt;"><span style="mso-spacerun:yes;">&nbsp;</span></span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">退火温度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">860</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃，退火硬度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">180HBS</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">左右。</span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">（</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">6</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">）<b style="mso-bidi-font-weight:normal;">淬火、回火规范</b></span><span style="font-family:'Times New Roman';"><b style="mso-bidi-font-weight:normal;"><span style="mso-bidi-font-size:10.5pt;"> </span></b><span style="mso-bidi-font-size:10.5pt;"><span style="mso-spacerun:yes;">&nbsp;</span></span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">预热温度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">850</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃，淬火温度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1100</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1150</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃，油冷却，回火温度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">530</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">570</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃。回火</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">3</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">次，每次</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2h</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">，硬度</span><span lang="EN-US" style="font-family:宋体;mso-bidi-font-family:宋体;">57</span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">63</span></span><span lang="EN-US" style="font-family:宋体;mso-bidi-font-family:宋体;">HRC</span><span style="font-family:宋体;mso-bidi-font-family:宋体;">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">（</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">7</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">）</span><b style="mso-bidi-font-weight:normal;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">LD</span></span></b><b style="mso-bidi-font-weight:normal;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢典型应用举例</span></b><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">①螺栓冷镦光冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍以上，螺栓冷镦切边模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">5.4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，螺母冷镦压球模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">16</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，螺母冷镦六角冲头比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">60Si2Mn</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">14</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">②自行车中轴婉冷挤压模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">W18Cr4V</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">8</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">10</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，套筒扳手冷挤压冲头比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">W6Mo5Cr4V2</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">5</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，内六角螺栓三序冲头比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">W18Cr4V</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，轴承圈打字冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">GCr15</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">8</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">9</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，汽车板弹簧冲孔冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">6.4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">③厚度</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">8mm</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">重型钢板网冲刀比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">W18Cr4V</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2.5</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">④弹簧钢挡圈冷冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">9</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，不锈钢挡圈冷冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">10</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍以上。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">⑤螺纹滚丝模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍，比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">9CrSi</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">⑥电机硅钢片冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">⑦手表壳冷冲模比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">提高寿命</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">5</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">⑧高韧性、高耐磨性冷作模具钢，强韧耐磨钢，使用寿命一般比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">提高</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">5</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">⑨在飞机、汽车、轴承、标准件、电机、电器、无线电、自行车、缝纫机、洗衣机、电视机、手表、电表、水表、链条、五金工具和日用五金等行业的冷锻、冷挤、冷冲、冷压和冷弯等各类冷作模具使用，寿命比</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">W18Cr4V</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">W6Mo5Cr4V2</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">Cr12MoV</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">CrWMn</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">GCr15</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">、</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">60Si2Mn</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">和</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">T10A</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">等钢分别提高数倍至数十倍。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">⑩适用于要求强韧性及高冲击载荷下工作的冷镦、冷冲模具等，特别适用于标准件和钢球的冷镦模具及汽车弹簧钢板的冲孔、冲头。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">11</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">该钢冷挤压凸模的低温淬火：按常规工艺</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1100</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="1150" unitname="℃"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1150</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃</span></st1:chmetcnv><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">加热淬火处理后，使用寿命仅</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">0.3</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">万～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">0.4</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">万次。改用</span><st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="1050" unitname="℃"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">1050</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃</span></st1:chmetcnv><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">×</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">25min</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">盐浴加热，油冷却，并经</span><st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="200" unitname="℃"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">200</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">℃</span></st1:chmetcnv><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">×</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2.5h</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">回火后，获得板条马氏体</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">+</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">弥散碳化物组织，硬度为</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">60</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">～</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">61HRC</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">，使用寿命提高到</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">2</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">万次。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt;text-indent:21.75pt;"><span style="font-size:small;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">12</span></span><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">钢</span><b style="mso-bidi-font-weight:normal;"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><span style="font-family:'Times New Roman';">LD</span></span></b><span style="font-family:宋体;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">已被广泛应用于制造冷锻、冷冲、冷压、冷弯等承受冲击、弯曲应力较大，又要求耐磨损的各类冷作模具。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;"><o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0pt 21pt;text-align:left;mso-pagination:widow-orphan;" align="left"><span style="font-size:14pt;font-family:宋体;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">具体详情请点击</span><span lang="EN-US" style="font-size:14pt;"><span style="font-family:'Times New Roman';">:</span><a href="http://www.tiedao-mold.com/products/detail/779.html"><span style="font-family:'Times New Roman';">http://www.tiedao-mold.com/products/detail/779.html</span></a><o:p></o:p></span></p>