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<h1 class="title maintitle" id="" style="margin: 0px 0px 14px; padding: 0px; font-size: 34px; width: 700px; font-family: 'Microsoft YaHei', SimHei, Verdana; line-height: 34px; color: rgb(0, 0, 0); font-weight: 500; z-index: 0; position: relative; overflow: hidden; zoom: 1; clear: right;"> <span class="lemmaTitleH1" style="height: auto; padding: 0px 0px 5px; display: inline;">9Cr2Mo</span></h1> <p> &nbsp;</p> <p> <span class="lemmaTitleH1" style="height: auto; padding: 0px 0px 5px; display: inline;">熱處理：</span></p> <p> <span class="lemmaTitleH1" style="height: auto; padding: 0px 0px 5px; display: inline;">物理性能</span></p> <p> <span style="color: rgb(51, 51, 51); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 2em;">&nbsp; &nbsp; &nbsp; 1、球化退火：790~810℃加熱，650~670℃℃等溫，&le;500℃出爐空冷；</span></p> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 2、淬火：加熱溫度=880~900℃，淬火冷卻：根據不同的工件結構，不同的要求，可以采用水、PAG淬火液、油等冷卻介質。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 注：此材料為典型的Cr2系冷軋輥用鋼。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 3、臨界點溫度 (近似值)：Ac1 =740&deg;C 、 Ar1 =700&deg;C、 Accm :850&deg;C</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 4、冷壓毛坯普通軟化規范：(820&plusmn;10)&deg;c &times;3 ~4h, 以.&le;15&deg;C /h的冷卻速度, 隨爐緩冷至&le;650&deg;C, 出爐空冷。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 5、冷壓毛坯等溫球化軟化規范：(820&plusmn;10)&deg;C &times;3 ~4h, (720 &plusmn;10) &deg;C &times;6 ~8h, 再隨爐緩冷至&le;600&deg;C, 出爐空冷。處理前硬度&le;217HBW, 處理后硬度&ge;170HBW。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 6、正火規范：正火溫度 900 ~920&deg;C, 硬度 302 -388HBW。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 7、成批等溫球化退火規范：790 ~810&deg;C &times;2 ~3h, 爐冷, 7O0 -720&deg;C &times;3 ~4h, 硬度&le;217HBW, 珠光體組織2-5 級, 網狀碳化物等級&le;2 級。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 8、淬火、回火規范</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 1) 淬火溫度 830 - 850&deg;C, 硬度 62 ~65HRC, 回火溫度 130 ~150&deg;C, 硬度 62 ~65HRC。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 2) 淬火溫度 840 ~ 860&deg;C, 硬度 61~63HRC, 回火溫度 150 ~170&deg;C, 硬度 60 ~62HRC。</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 化學成分：</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> &nbsp;</div> <div class="para" style="color: rgb(51, 51, 51); margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 碳C:0.85～0.95；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 鉻Cr:1.70～2.10；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 錳Mn:0.20～0.35；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 鉬Mo:0.20～0.40；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 鎳Ni:&le;0.25；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 磷P:&le;0.025；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 硫S:&le;0.025；</div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; line-height: 24px; font-size: 14px;"> 硅Si:0.25～0.45</div> </div> <p> &nbsp;</p>