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href='http://www.www.nobushinkyu.com/news/383.html'>http://www.www.nobushinkyu.com/news/383.html</a></span> </h3> </div> <div class="content"><p><span style="font-size:14px;">1、一般要?/span><br /> <span style="font-size:14px;">当改变加工工艺或原材料变动时Q制造商应对接头做型式试验。型式试验分为气密性试验和耐压</span><span style="font-size:14px;">试验?/span><br /> <span style="font-size:14px;">型式试验h一-定的危险性,在进行试验时Q必M格遵守相应的安全防护措施Q特别需防范爆裂?/span><span style="font-size:14px;">l喷(能穿透皮?和气体膨胀造成的能量释放。ؓ了降低气体膨胀能量释放的危险性,在进行耐压?/span><span style="font-size:14px;">验时Q加压前应排攑ְ试验样g中的I气。试验h员需l过适当培训?/span><br /> <span style="font-size:14px;">2、试验介?/span><br /> <p> <span style="font-size:14px;">气密性试验流体介质应采用I气、气或氦气。耐压试验体介质应采用符合GB/T7631.2要求?/span><span style="font-size:14px;">_度不大于GB/T 3141 规定的VG 32 液压?如HM)或水。除非另有规定,所有试验用体介质?/span><span style="font-size:14px;">度应?5'C~ 80'C之间?/span> </p> <p style="text-align:center;"> <span style="font-size:14px;"><img style="max-width:100%;" src="/uploads/image/20201020/20201020143135_1943.jpg" alt="" /><br /> </span> </p> <span style="font-size:14px;">3、气密性试?/span><br /> <span style="font-size:14px;">接头应通过泄漏试验Q将l装好的接头试验组件浸没在水中Q加压至4.8 MPa。保? min,</span><span style="font-size:14px;">观察是否有气泡冒出。应在测试报告中明确注明试体介质是空气、气或氦气?/span><span style="font-size:14px;">通过本试验的零g可l用于耐压试验Q但不得投入实际使用?/span><br /> <span style="font-size:14px;">4、耐压试验</span><br /> <span style="font-size:14px;"><b><a href="http://www.www.nobushinkyu.com/" target="_blank" style="font-weight:bold">铰接接?/a></b>试验lg应能?4 MPa的工作压力下(升压速度每秒不得过最大工作压力值的16%)?/span><span style="font-size:14px;">?min而不产生渗漏、破裂或拔脱。应在测试报告中明确注明试体介质是a或水?/span><span style="font-size:14px;">通过本试验的零g不得投入实际使用?/span><br /> <br /> <span style="font-size:14px;"></span></p></div> <h3 class="tag">相关标签Q?a href='/key.aspx?k=%e9%93%b0%e6%8e%a5%e7%ae%a1%e6%8e%a5%e5%a4%b4'>铰接接?/a>,</h3> <div class="page"><div>上一?<a href="384.html">采样钢瓶专用阀的用寿命是多少呢?</a></div> <div>下一?<a href="382.html">采样器角阀性能Ҏ?/a></div> </div> </div> <div class="relate_list"> <div class="relateproduct relate"><h4>相关产品Q?/h4> 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