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pe管材管件检测标准

聚乙烯(PE)管道热熔连接、电熔连接焊口接头质量快速、实用的检测方法和合格判定也是目前PE管道施工的一个瓶颈。以热熔连接为例,目前的检测方法是以目测焊口焊环的外观来检验其质量,虽然有些问题可以通过焊环的外观发现,但有些内在的问题则无法从表面体现,比如“假焊”,“假焊”的外观与合格外观相差无几,但长期强度无法保证,其他管线施工时破坏了燃气管道地基,燃气管道在不平衡外力作用下,被挤压开裂造成重大泄露事故。

It is a bottleneck in the construction of PE pipeline to melt and connect the welded joints of polyethylene (PE) pipes. The hot melt connection as an example, the current detection method is to visually weld welding ring appearance to test its quality, although some problems can be found by ring welding appearance, but some inherent problems cannot be reflected from the surface, such as "false welding", "false welding" with the appearance of qualified appearance but not much difference between. The long-term strength can not be guaranteed, other pipeline construction damage of the gas pipeline gas pipeline foundation, the imbalance in the external force, extrusion cracking caused by major accidents.

在电熔连接方面,仅靠最终电熔管件上观察孔的顶出与否来判断焊接的质量是不完全也是不确切的,观察孔仅作为判断焊接效果的一个依据,电熔焊接接头的最终质量最主要还是靠操作过程中严格的控制。所以研究出聚乙烯(PE)压力管道接头质量快速、实用检测方法,对确保工程质量具有重要意义

In welding connection, only the final fused fittings on the top and observe whether or not to judge the quality of welding is not completely is not the exact hole, the observation hole only as a basis to judge the effect of welding, electric fusion welded joint the final quality mainly depends on the control in the process of operation strictly. Therefore, it is of great significance to study the quality and quality of polyethylene (PE) pressure pipe joint in order to ensure the quality of the project

就PE管道连接施工而言,虽然操作简单容易掌握,但无论热熔连接和电熔连接的操作过程都必须严格控制操作步骤,也就是操作的过程控制,而并非单一的靠最终焊口来对接头质量进行合格的判定。以热熔焊接为例,温度、时间和压力是焊接过程中最重要的三个因素,由于PE管道热熔焊接非常容易受到环境变化和人为操作因素的影响,在世界范围内都没有统一的定值,但在一些使用PE管道较早的国家都形成了一套比较完善和成熟的操作规程和参数设定的计算方法,而在我国很多PE管道工程的施工中,三个重要因素的设定一般由聚乙烯(PE)生产企业提供,所以存在的差异较大。

PE pipeline construction, although the operation is simple and easy to grasp, but whether the hot melt connection and electric melt connection operation process must be strictly controlled operation steps, operation process is controlled, rather than relying on the final single to weld on the joint quality of qualified judges. With hot melt welding as an example, temperature, pressure and time are the three most important factors in the welding process, due to the influence of PE pipe hot melt is very vulnerable to environmental changes and human factors of welding, there is no fixed value are unified in the world, but in some countries are using the PE pipeline earlier formed a calculation method a set of more perfect and mature operation rules and parameters, and in the construction of many PE pipeline project in China, three important factors set by the general polyethylene (PE) production enterprises, so there are great differences.

另外在许多地方,施工人员野蛮施工造成的质量事故也是时有发生。尽管在温度、时间和压力三个重要因素上比较重视,但是整个操作过程中的其它细节往往容易被忽视。比如待焊端面的铣削,如何保持端面的清洁以及最终焊口的冷却过程及时间等细节问题,这些问题被忽视可能从最终的焊口上无法表现出来,但焊口的内在性能无法保证。因此焊接工艺和操作规程的正确有效执行至关重要,并且和焊接设备性能的稳定和操作人员的责任心紧密相关。在电熔连接方面,仅靠保证对电熔管件输放电压的稳定和焊接时间的准确是不够的,而焊接前的准备工作如:待焊管材管件端面是否清洁,如存在杂质,最终熔接的效果肯定受到影响。

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In addition, in many places, construction workers barbaric construction of quality accidents also happen. Although the temperature, time and pressure are three important factors, but the whole process of other details are often overlooked. For example, to be welded end milling, how to maintain the cooling process and end time cleaning and final weld details, these problems may not be ignored from the end of the welding performance, but can not guarantee the inherent properties of weld. Therefore, the correct and effective implementation of welding procedures and procedures is critical and closely related to the stability of welding equipment and the responsibility of operators. In welding connection, it is not enough to guarantee the electric melting pipe transport and discharge voltage stability and welding time accurately, and weld preparations such as welding pipe surface is clean, such as the existence of impurities, eventually melt effects are affected.

氧化层的刮除,不刮除或是刮除程度不够很可能会引起熔接百分之百的失败;电熔管件与待焊管材或管件的组装是否正确也会影响最终焊接的质量。此外,焊接前电熔管件的贮存条件是否符合标准以及焊接后冷却的过程是否得当等都是影响最终焊接质量的因素。而在国内这些方面进行规范和必要的施工技术配套则落后于PE管发展应用的速度,从而一定程度上制约了PE管道的推广应用。因此,对工程技术人员以及施工人员进行专业培训,逐步实现持证上岗是使PE管道施工走向正规和良好发展的有效途径

The scraping of the oxide layer, without scraping or scraping is not enough. It is likely to cause the failure of welding one hundred percent. The assembly of the fused tube and the pipe or pipe to be welded will also affect the quality of the final welding. In addition, before welding, whether the storage condition of the fused pipe meets the standard and the proper cooling process after welding are the factors that affect the final welding quality. The specification and the necessary supporting construction technology in the country is lagging behind in the development of PE pipe application speed, which restricts the popularization and application of PE pipe. Therefore, it is an effective way to make professional construction of engineering technicians and construction personnel, and gradually realize the certificate holder appointment to make PE pipeline construction go to regular and good development

本文由RBS旋流加强型导流管件整理发布,您是不是对这些内容有所了解了呢?更多的内容请点击:http://www.sdcpvc.com我们会有更多精彩内容等你查看。

This article is issued by the RBS swirl reinforced manifold tube. Do you know something about it? Please click on http://www.sdcpvc.com for more details. We will have more exciting information for you to check.


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