管材负压试验�?参数-价格-中国粉体罐�/title>

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} }); function showliuyan(me, showtype){ if(showtype==0){ //$("#Content").val($("#Content").attr('placeholder')); Content= document.getElementById('PopMsgFrom').Content.getAttribute('placeholder'); document.getElementById('PopMsgFrom').Content.value=Content; } if(showtype==1){ // $("#Content").val($(me).text()); alert($(me).text()); document.getElementById('PopMsgFrom').Content.value=$(me).text(); } $(".fxp").css("display","flex"); } function close_popwin(){ $(".fxp").css("display","none"); // 关闭虚拟电话后的留言� $(".dhxj").css("display","none"); $(".dhxjbox").css("display", "none"); $(".dhxjbox2").css("display", "none"); return false; } </script>  <div class="cpjs"> <div class="cpjs_tab"> <div class="js_cpjj" style="border-bottom: 3px solid #1479d7; color: #1479d7;">产品介绍</div> <div class="js_cxd">创新炸�/div> <div class="js_xgfa">相关方案</div> <div class="js_xgzl">相关资料</div> <div class="js_yhpl">用户评论</div> <div class="js_gsdt">公司动�?/div> <div class="js_wsj">问商宵�/div> </div> <script> $(function(){ // 切换 $(".cpjs_tab a").click(function(){ $(".cpjs_tab a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><span>一、简今�/span></p><p><span>1</span><span>、功胼�</span></p><p><span><strong><span><strong>管材负压试验朹�/strong></span></strong></span><span>是根据管材在在实际应用中的工作条件的要求而设计、生产的，用于测定热塑性管材、复合管�?*负压值，是塑料管材生产厂商及检测机构必备的检测设备。此设备能够充分体现企业的产品质量的水平、�/span></p><p><span>2</span><span>、符合标准：</span></p><p><span>GB/T19471.2-2004</span><span>《塑料管道系� 硬聚氯乙烯管材弹性密封圈式承口接� 负压密封试验方法》� ISO 13844�?000</span></p><p><span>3</span><span>、基本原理：</span></p><p><span>将塑料管插口管段插入塑料管承口管段，使两管段的轴线偏角满足规定角度，并使插口管段产生一定的形变，在规定的温度范围内，依次向试样施加两个规定的负内压，在规定的测试时间内观察试样的密封情况、�/span></p><p><span>工作架：</span></p><p><span>至少包括两个紧固装置，其中一个是可调节的，在向试样施加负压（相对真空）的同时，可以使试样接头处产生一定的偏转角度、�/span></p><p><span>夹具：可以在距离承口管段端面规定距离处的插口管段上，施加一个变形力、�/span></p><p><span>真空泵：能施加并保持两个规定的负压、�/span></p><p><span>隔离阀：安装在真空泵和试样之间、�/span></p><p><span>试样９�/span></p><p><span>选择适当的尺寸，管材的平均外径d<sub>em</sub>，应是在公差范围内的*小值，并且承口尺寸（平均内径d<sub>em</sub>和放密封圈的密封槽的直径）尽量取符合制造商规定�?*值、�/span></p><p><span>插口管段的自由长度L，是指承口端面和插口管段密封接头端面的距离，等于5倍的公称外径d<sub>n</sub>，插口管段的自由长度L*小为500mm�?*�?500mm、�/span></p><p><span>二�?/span><span><strong><strong>管材负压试验朹�/strong></strong></span><span>组成及配�?/span></p><p><span>1</span><span>�?/span><span>主机箱及控制系统--------1�?/span></p><p><span>2</span><span>�?/span><span>真空负压�?-------------1奖�/span></p><p><span>3</span><span>�?/span><span>管材支架----------------1奖�/span></p><p><span>4</span><span>�?/span><span>管材夹具----------------配D225� D250两套</span></p><p><span>5</span><span>�?/span><span>PLC</span><span>可编程控制器---------1奖�/span></p><p><span>6</span><span>�?/span><span>汉字液晶触摸�?---------1奖�/span></p><p><span>7</span><span>�?/span><span>隔离阀，安全阀----------�?奖�/span></p><p><span>三�?/span><span><strong><strong>管材负压试验朹�/strong></strong></span><span>性能指标及技术要汁�/span></p><p><span>1</span><span>、适用管径:315以下</span></p><p><span>2</span><span>、德国BECKER真空泵主要参数：</span></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><span>型号</span></p></td><td><p><span>流量 m<sup>3</sup>/h@50Hz</span></p></td><td><p><span>**真空</p><p>mbar**倻�/span></p></td><td><p><span>电机功率kW</span></p></td><td><p><span>转速转/分钟@50Hz</span></p></td></tr><tr><td><p><span>U 4.40 SA/K</span></p></td><td><p><span>410</span></p></td><td><p><span>0.5</span></p></td><td><p><span>1.50</span></p></td><td><p><span>1450</span></p></td></tr></tbody></table><p><span>5</span><span>、显示精度：0.0002MPa</span></p><p><span>6</span><span>、压力变送器:试验压力采样频率0.1毫秒</span></p><p><span>7</span><span>、计时范围：0�?999h</span></p><p><span>8</span><span>、计时精度：1S</span></p><p><span>四�?/span><span><strong><strong>管材负压试验朹�/strong></strong></span><span>试验方法和步骤：</span></p><p><span>（一）试验方泔�/span></p><p><span>1</span><span>、按相关标准要求，选择试样安装在试样架上、�/span></p><p><span>2</span><span>、将经过状态调节后的试样与加压设备连接起来，然后根据试样的材料、规格尺寸和加压设备情况，当达到试验-�?.01��0.002）Mpa（绝�?.093��0.002 Mpa）时关闭负压泵开始计时。如果负压变化超�?.005MPa，停止试验、�/span></p><p><span>如果负压变化不超�?.005 MPa，则对试样继续施加负压，直到压力达到－（0.08��0.002）MPa（绝�?.023��0.002 Mpa）。断开试样与负压泵，监控压�?5min，并记录负压的变化、�/span></p><p><span>机器同时显示压力曲线的实时变化、�/span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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