<p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 25px;">9CrWMn具钢有一些裂纹敏感性，锻造加热时不宜迅速加热，最好在650-750度进行一次预热，锻造加热温度为1130-1150度，终锻温度应大于800-850度，钢锭锻造时取上限温度。<span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">●化学成份：</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">碳 C ：0.85～0.95</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">硅 Si：&le;0.40</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">锰 Mn：0.90～1.20</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">硫 S ：&le;0.030</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">磷 P ：&le;0.030</span><img src="http://i0.qhimg.com/dr/200__/t01d888c443fdc2efbf.jpg" style="margin: 0px; padding: 0px; outline: 0px; border: none;" /><span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">铬 Cr：0.50～0.80</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">镍 Ni：允许残余含量&le;0.25</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">铜 Cu：允许残余含量&le;0.30</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">钨 W ：0.50~0.80<span style="margin: 0px; padding: 0px; outline: 0px;">硬度 ：退火,241～197HB,压痕直径3.9～4.3mm;淬火,&ge;62HRC</span><img src="http://i0.qhimg.com/dr/200__/t01562b1ef7ab6fb8f1.jpg" style="margin: 0px; padding: 0px; outline: 0px; border: none;" /><span style="margin: 0px; padding: 0px; outline: 0px;">●热处理规范及金相组织：</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px;">热处理规范：淬火,800～830℃油冷。</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px;">●交货状态：钢材以退火状态交货。</span></span></span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 25px;"><span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;"><span style="margin: 0px; padding: 0px; outline: 0px;">退火：一般退火采用780-800度，保温4-6小时，以&le;50度/小时，冷却到550度出炉空冷，等温退火采用700-800度保温2-4小时，然后再670-720度保温，保持2-4小时，以&le;50度/小时冷速冷却到500度出炉空冷，退火硬度为241-197HB</span></span></span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 25px;"><span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;"><span style="margin: 0px; padding: 0px; outline: 0px;">9CrWMn模具钢材为低合金冷作模具钢.。该钢具有一定的淬透性和耐磨性，淬火变形较小，碳化物分布均匀颗粒细小。</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px;">9CrWMn模具钢材通常用于制造截面不大而形状较复杂的冷冲模以及各种量规量具等。</span></span></span></p>