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<a href="/web/20180826182432/http://hxft1.com/html/cpzx/">产品中心</a> &gt; <a href="/web/20180826182432/http://hxft1.com/html/cpzx/ft/">封头</a> &gt; </div> <!-- weizi结束 --> <div id="DocContent"> <h1 class="doc_title">罐体封头 </h1> <div class="content"> <!-- 文章内容开始 --> <a href="https://web.archive.org/web/20180826182432/http://hxft1.com/">宏鑫封头厂位于河北省沧州市盐山县城南开发区,本厂专业生产各种型号的封头、各种型号的冲压件。  联系电话【13731720882】</a><strong><a href="https://web.archive.org/web/20180826182432/http://hxft1.com/"><span style="color:#ff0000;">罐体封头</span></a></strong>经加工成形的同轴或二轴平行的凸形、锥形、变径段、平盖、紧缩口、偏心圆锥等旋转或对称的几何体,并与圆筒形几何体的二端或一端或其他部位共同构成一密闭或敞开的承压、真空或常压空间,用于存放气体、液体或固体的这个部件叫封头。其英文名为“Head”,日文称“镜板”(Formed Head),中国台湾称“端板”。JISB0190压力容器建造用术语词汇的定义是:“形成压力容器端部或中间间隔的碟形等形状的部分就是封头”。 ASMEⅧ一1和ENl3445对薄壁成型封头采用定量计算的方法,通过具体的公式确定其最小壁厚。其中,ENl3445定义了碟形封头详细设计参数,对碟形封头各部位壁厚(包括球冠部分、过渡圆角以及直边连接段)都做了量化规定。确定封头计算厚度时,需要分别用三组公式计算出球冠部分厚度、过渡圆角部分厚度和过渡圆角满足失稳条件的厚度,封头的计算厚度取其中的最大值,这样既满足了设计强度要求,又满足了稳定性要求。标准中还做出了标准椭圆形封头与球冠部分半径尺=0.9域、转角过渡内半径r=O.17见的碟形封头可以互相当量替代的规定,其中Di为封头的内直径。 GBl50中没有给出类似的计算公式防止封头在内压下的弹性失稳破坏.而是限制封头的最小壁厚H,,直接规定:标准椭圆形封头的有效壁厚不应小于其内直径的0.15%,其他椭圆形封头的有效壁厚不小于其内直径的0.30%。实际应用时,需计算出封头有效厚度,与内直径对比后才能最终确定封头有效厚度。<br><br><br><span style="font-family: Arial, Helvetica, sans-serif; line-height: 21.591796875px;"><a href="https://web.archive.org/web/20180826182432/http://hxft9.com/"><img alt="罐体封头" src="/web/20180826182432im_/http://hxft1.com/uploads/allimg/160515/1-1605151642590-L.jpg" style="width: 400px; height: 300px;" title="点击更多精彩"></a></span><br><!-- 文章内容结束 --></div> </div> <!-- DocContent结束 --> <div id="PrevNext"> <p>上一篇:<a href="/web/20180826182432/http://hxft1.com/html/cpzx/ft/2016/0515/70.html">冲压封头</a> </p> <p>下一篇:<a href="/web/20180826182432/http://hxft1.com/html/cpzx/ft/2016/0515/72.html">热压封头</a> </p> </div></article></div><span class="clear"></span><div style="height:20px"> </div><span class="claer"> </span> <footer id="footer"><ul class="bomnav"><li><a href="/web/20180826182432/http://hxft1.com/">官网首页</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/cpzx/">产品中心</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/gsjj/">公司简介</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/xwzx/">新闻中心</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/jswz/">技术文章</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/shfw/">售后服务</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/cfsbzs/">厂房设备展示</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/zxly/">在线留言</a></li> <li><a href="/web/20180826182432/http://hxft1.com/html/lxwm/">联系我们</a></li> </ul><span class="clear"></span> <div class="center"> <div class="box"> <p> Copyright ©2016 河北盐山宏鑫封头管件制造厂 版权所有 <script type="text/javascript">var cnzz_protocol = (("https:" == document.location.protocol) ? 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