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fs14"> <b class="fl"><a href="/">首页</a> > <a href="/sh17i7/news/cjwd/">常见问答</a> > 详细内容</b> </div> <div class="insNewsArti clearfix pt10 font_w"> <h2 class="tac fs20">PE管出现斑点的原因及解决办?/h2> <h3 class="tac"><span>来源?a href='http://www.samedvurgun.com/news/213.html'>http://www.samedvurgun.com/news/213.html</a></span><span>发布时间?018-06-07</span></h3> <div class="con mt10 fs14"> <p><p> <span style="color:#333333;font-family:"font-size:17px;line-height:29.75px;background-color:#FFFFFF;"><a href="/sh17i7/supply/133.html" target="_blank">PE?/a>在生产过程中如果操作不当,会出现各种不同的影响管材使用或质量的问题,造成这种问题的原因有御多种,可能是由于操作人员的技术不成熟、原料原因以及机器设备故障等原因造成的。今天着重向大家介绍両Ӌ造成PE管出现斑点的原因以及解决办法?nbsp;</span> </p> <p> <span style="color:#333333;font-family:"font-size:17px;line-height:29.75px;background-color:#FFFFFF;"><img src="/uploads/image/20180607/20180607161817_3780.jpg" alt="" /><br /> </span> </p> <p> <span style="color:#333333;font-family:"font-size:17px;line-height:29.75px;background-color:#FFFFFF;"> </span> </p> <p style="color:#333333;font-family:"font-size:17px;text-align:justify;text-indent:2em;background-color:#FFFFFF;"> 1.由于定型套冷却水道堵塞导致水量不匀而造成有规律的麻点分布,这种情况下应清洗调节流道孔隙,以保证冷却水的匀成衩,从而避免麻点出现?nbsp; </p> <p style="color:#333333;font-family:"font-size:17px;text-align:justify;text-indent:2em;background-color:#FFFFFF;"> 2.由于机头或机筒中原料加热时间过长,机头和螺筒e不清洁或加工温度太高或螺杆损伤都容易产生老化料,挤出时形戨K大的麻点而成凹洞,别是在添加回用料时,这种情况庨在停机1.5小时左右停娍粉碎料,若停机后4小时不开机应迅速将温度降到150-200℡内,大限度的降低原料的分解程度,还应注意检查加工温度是否适应挤出要求〡?nbsp; </p> <p style="color:#333333;font-family:"font-size:17px;text-align:justify;text-indent:2em;background-color:#FFFFFF;"> 3.定型套的冷却水量不均匀造成PE管材表面麻点,?15以上各种规格管材或多或少都在此类现象,厦因是随口径的增大,定型套受冷却水分布受重力影响越大,所需冷却水量越大,形成完整水膜越困难,应谡ƃ整各进水管的水流量,适当增大上部水流量或增大冷却效果巡̮的部位的水流量?nbsp; </p> <p style="color:#333333;font-family:"font-size:17px;text-align:justify;text-indent:2em;background-color:#FFFFFF;"> 4.如果原中存在难以塑化的杂质时,是会产生麻点的,并且这类麻点较大的话是可以看出麻点中部的杂质成分的,生产PE管时需提高加工温度或更换原料? </p> <p style="color:#333333;font-family:"font-size:17px;text-align:justify;text-indent:2em;background-color:#FFFFFF;"> 5.如果原料潮湿,管材表面会产生小气泡,定型后便形成麨点,这时观察这类点可以发现,在挤出的反方向上有拉伸形成稈小尾巴,这时就需要对原料烘塺处理?nbsp; </p> <p style="color:#333333;font-family:"font-size:17px;text-align:justify;text-indent:2em;background-color:#FFFFFF;"> 6.水量太大造成管材表面麻点,这种情况䡷要发生在孔式定型套上,由于定型套内部流道不分区,水由重力作用下部分|压较大,水量较多,而上部水量较小,管材表面较软,造水压大的地方出现麻点? </p> <br /> <p> <br /> </p></p> </div> <div class="newArtiNext mt10"><div>上一?<a href="214.html">PE管道胦ء在现代社会如此受欢迎得益于它的实力</a></div> <div>下一?<a href="/sh17i7/news/212.html">FRPP管道使用范围广且安全又放?/a></div> </div> <div class="tag">相ׅ标签?/div> <div class="crumb mt15"> <span class="fl font_w fb fs22">相关w新闻<b class="fs14 fn font_i ml5">RELATED NEWS</b></span> </div> <div class="insNews1 clearfix pt10 fs14 font_w"> <ul> <li><a href="/news/351.html"> FRPP管道主要应用领域咡特?/a><span>2021-07-06</span></li> <li><a href="/news/350.html">PP管道材设计几个注意点</a><span>2021-06-30</span></li> <li><a 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