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<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具鋼有一些裂紋敏感性，鍛造加熱時(shí)不宜迅速加熱，最好在650-750度進(jìn)行一次預(yù)熱，鍛造加熱溫度為1130-1150度，終鍛溫度應(yīng)大于800-850度，鋼錠鍛造時(shí)取上限溫度。<span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">●化學(xué)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;">錳 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;">鉻 Cr：0.50～0.80</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">鎳 Ni：允許殘余含量&le;0.25</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">銅 Cu：允許殘余含量&le;0.30</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px; line-height: 28px;">鎢 W ：0.50~0.80<span style="margin: 0px; padding: 0px; outline: 0px;">硬度 ：退火,241～197HB,壓痕直徑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;">●熱處理規(guī)范及金相組織：</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px;">熱處理規(guī)范：淬火,800～830℃油冷。</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px;">●交貨狀態(tài)：鋼材以退火狀態(tài)交貨。</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，保溫4-6小時(shí)，以&le;50度/小時(shí)，冷卻到550度出爐空冷，等溫退火采用700-800度保溫2-4小時(shí)，然后再670-720度保溫，保持2-4小時(shí)，以&le;50度/小時(shí)冷速冷卻到500度出爐空冷，退火硬度為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模具鋼材為低合金冷作模具鋼.。該鋼具有一定的淬透性和耐磨性，淬火變形較小，碳化物分布均勻顆粒細(xì)小。</span><br style="margin: 0px; padding: 0px;" /> <span style="margin: 0px; padding: 0px; outline: 0px;">9CrWMn模具鋼材通常用于制造截面不大而形狀較復(fù)雜的冷沖模以及各種量規(guī)量具等。</span></span></span></p>