亚洲无码中字_亚洲欧美一级夜夜爽视频_久久都是精品国产_国产麻豆一精品一av一免费

<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;">34CrNiMo6</span></h1> <p> <strong><span style="color: rgb(51, 51, 51); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">&nbsp; &nbsp; &nbsp; 34CrNiMo6合金高強(qiáng)</span><span style="font-family: arial, 宋體, sans-serif; text-indent: 28px; font-size: 0px; line-height: 0px;"><font color="#136ec2">強(qiáng)</font></span><span style="color: rgb(51, 51, 51); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">,因其優(yōu)良的綜合力學(xué)性能,廣泛用于制造發(fā)動機(jī)的</span><a href="http://baike.baidu.com/subview/779873/779873.htm" style="text-decoration: none; color: rgb(19, 110, 194); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;" target="_blank">凸輪軸</a><span style="color: rgb(51, 51, 51); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">及連桿等重要零件,加工性較差,屬于典型的</span><a href="http://baike.baidu.com/subview/4569375/4569375.htm" style="text-decoration: none; color: rgb(19, 110, 194); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;" target="_blank">難加工材料</a><span style="color: rgb(51, 51, 51); font-family: arial, 宋體, sans-serif; font-size: 14px; line-height: 24px; text-indent: 28px;">.</span></strong></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;"> <strong>化學(xué)成分：</strong></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;"> <strong>C碳 :0.34</strong></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;"> <strong>Si硅 :0.25~0.30</strong></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;"> <strong>Mn錳 :0.5</strong></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;"> <strong>Mo鉬 :0.2 Cr鉻 :1.5</strong></div> <p> &nbsp;</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;"> <strong>Ni鎳 :1.55</strong></div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em; font-family: arial, 宋體, sans-serif;"> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>力學(xué)性能：</strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>34CrNiMo6材料經(jīng)<a href="http://baike.baidu.com/subview/72146/72146.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">調(diào)質(zhì)處理</a>后,硬度為36～40HRC,<a href="http://baike.baidu.com/subview/52178/52178.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">抗拉強(qiáng)度</a>&sigma;b為1 100 MPa,<a href="http://baike.baidu.com/subview/499391/499391.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">伸長率</a>&delta;為12%,<a href="http://baike.baidu.com/subview/3869092/3869092.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">沖擊韌度</a>值&alpha;&kappa;為8kg/cm2</strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>熱處理:</strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>34CrNiMo6其<a href="http://baike.baidu.com/subview/891605/891605.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">調(diào)質(zhì)</a>工藝為850 油淬580度<a href="http://baike.baidu.com/subview/145442/14383113.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">回火</a></strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>分類：</strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>①調(diào)質(zhì)結(jié)構(gòu)鋼</strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>②表面硬化結(jié)構(gòu)鋼</strong></div> <div class="para" style="margin: 15px 0px 5px; text-indent: 2em;"> <strong><font color="#333333"><span style="font-size: 14px; line-height: 24px;">①調(diào)質(zhì)</span></font><font color="#136ec2"><span style="font-size: 0px; line-height: 0px;">，，，，，，，， &nbsp; &nbsp;</span></font><font color="#333333"><span style="font-size: 14px; line-height: 24px;">這類鋼的含碳量一般約為0.25%～0.55%，對于既定截面尺寸的結(jié)構(gòu)件，在調(diào)質(zhì)處理（淬火加回火）時(shí)，如果沿截面淬透，則力學(xué)性能良好，如果淬不透，</span></font><a href="http://baike.baidu.com/subview/1490886/1490886.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">顯微組織</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">中出現(xiàn)有自由</span></font><a href="http://baike.baidu.com/subview/7557/7557.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">鐵素體</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">，則韌性下降。對具有</span></font><a href="http://baike.baidu.com/subview/543262/543262.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">回火脆性</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">傾向的鋼如</span></font><a href="http://baike.baidu.com/subview/1061735/1061735.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">錳鋼</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">、</span></font><a href="http://baike.baidu.com/subview/1687185/1687185.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">鉻鋼</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">、</span></font><a href="http://baike.baidu.com/subview/11775852/12143908.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">鎳鉻鋼</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">等，</span></font><a href="http://baike.baidu.com/subview/145442/14383113.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">回火</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">后應(yīng)快冷。這類鋼的淬火</span></font><a href="http://baike.baidu.com/subview/650865/650865.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">臨界直徑</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">，隨</span></font><a href="http://baike.baidu.com/subview/1220902/1220902.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">晶粒度</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">和合金元素含量的增加而增大，例如，</span></font><a href="http://baike.baidu.com/subview/1979559/1979559.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">40cr</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">和</span></font><a href="http://baike.baidu.com/subview/2384857/2384857.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">35simn</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">鋼約為30～40mm，而</span></font><a href="http://baike.baidu.com/subview/3695241/3695241.htm" style="color: rgb(19, 110, 194); font-size: 14px; line-height: 24px; text-decoration: none;" target="_blank">40crnimo</a><font color="#333333"><span style="font-size: 14px; line-height: 24px;">和30crni2mov鋼則約為60～100mm，常用于制造承受較大載荷的軸、連桿等結(jié)構(gòu)件。</span></font></strong></div> <div class="para" style="color: rgb(51, 51, 51); font-size: 14px; line-height: 24px; margin: 15px 0px 5px; text-indent: 2em;"> <strong>②表面硬化結(jié)構(gòu)鋼用以制造表層堅(jiān)硬耐磨而心部柔韌的零部件,如<a href="http://baike.baidu.com/view/25045.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">齒輪</a>、軸等。為使零件心部韌性高,鋼中含碳量應(yīng)低，一般在0.12～0.25%，同時(shí)還有適量的合金元素，以保證適宜的<a href="http://baike.baidu.com/subview/539552/539552.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">淬透性</a>。氮化鋼還需加入易形成氮化物的合金元素（如al、cr、mo等）。<a href="http://baike.baidu.com/subview/72159/72159.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">滲碳</a>或<a href="http://baike.baidu.com/subview/1615065/1615065.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">碳氮共滲</a>鋼，經(jīng)850～950℃滲碳或碳氮共滲后，淬火并在<a href="http://baike.baidu.com/subview/543183/543183.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">低溫回火</a>(約200℃)狀態(tài)下使用。氮化鋼經(jīng)<a href="http://baike.baidu.com/subview/402817/402817.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">氮化處理</a>(480～580℃)，直接使用，不再經(jīng)淬火與<a href="http://baike.baidu.com/subview/3024709/3024709.htm" style="text-decoration: none; color: rgb(19, 110, 194);" target="_blank">回火處理</a>。</strong></div> </div> <p> &nbsp;</p>