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道路护栏的防锈防腐维护方法是什么?

  道路护栏的防锈防腐维护方法是什么?


  道路护栏是为了更好的维持交通秩序,但是道路防护栏网若不维护就会缩短其使用寿命,同时为了大家的安全,公路护栏网也要做好防腐防锈工作。


  对于道路护栏网进行浸塑是防腐的方法之一,现在国内比较成熟的作法是粉末浸塑法,它起源于流化床法。所谓的流化床最初是在温克勒气体发生炉上应用于石油接触分解,进而开发了固气两相接触工艺,后逐渐用于金属涂塑方面。所以有时仍叫“流化床包覆法”,实际过程是把粉末涂料加入底部多孔透气的容器(流动槽)中,由鼓风机从下送入经过处理的压缩空气,使粉末涂料翻动达到“流化状态”,成为均匀分布的细散粉末。


  我们知道流化床是固体流态的第二阶段(第一阶段为固定床阶段,第二阶段为气流输送阶段),在固定床的基础上继续增大流速(W),床层开始膨胀和松动,床层高度开始增加,每个粉末颗粒被浮起,因而离开原来位置作一定程度的移动,这时便进入流化床阶段。bc段说明流化床内粉层膨胀,其高度(I)随着气体速度的增大而增加,但床内压强(△P)并不增大,在一定范围内变动流速而不影响流体所需的单位功率,这是流化床的特征,正是利用这一特点来进行涂装工艺实施的。流化床内粉末流化状态的均匀性是保证涂膜均匀的关键。在粉末涂装上用的流化床属于“竖式流态化”,流化数必需经过试验找出,一般以能够涂敷即可,流化床内粉末的悬浮率最高可达30~50%。


  浸塑方法如下:道路护栏网或铁路护栏网经过除油预热到粉末涂料熔融点以上,浸渍到流化床中后塑粉会均匀粘附,然后塑化高分子交联流平成钢塑复合制品。


  What is the method of protection against rust and corrosion of road barrier?


  Road guardrail is in order to maintain traffic order, but if you don't maintain road protection nets will shorten its service life, at the same time for everyone's safety, highway fence should also do the anticorrosion work.


  It is one of the methods of corrosion protection for the road fence net to be dipped. Now the domestic more mature is the powder impregnation method, which originated from the fluidized bed method. The fluidized bed was originally in the Winkler gas generator used in oil contact decomposition, then developed a two-phase contact process, after gradually for the metal coated hand. I sometimes called the fluidized bed coating method, the actual process is put into a container at the bottom of the powder coating porous breathable (flow), by the blower from processed into compressed air, make the powder coating reach "fluidized state", become the uniform distribution of fine powder.


  We know that the second phase flow of solid fluidized bed (first stage fixed bed stage, the second stage is the stage of air transportation), continue to increase the velocity based on fixed bed (W), the bed began to swell and loose, the height of bed began to increase, each powder particles float, thus leaving the original position for mobile to a certain extent, it will enter the stage of fluidized bed. BC shows that fluidized bed powder layer expansion, its height (I) increased with increasing gas velocity, but the bed pressure (P) does not increase, changes in flow rate in a certain range without affecting the unit power fluid required, the fluidized bed features, is to use the implementation of coating process a special point. The uniformity of fluidization state in fluidized bed is the key to ensure the uniformity of coating film. The powder coating used in fluidized bed belong to the vertical fluidization, the flow number must be found in the test, in general, can be suspended in the fluidized bed can be coated, powder rate of up to 30 ~ 50%.


  The following methods: dip road or rail fence fence after in addition to preheat the oil to the melting point of powder coating, dipping into the fluidized bed after plastic powder evenly adhesion, then plasticized polymer flow Heisei plastic composite products.