北京公路护栏网厂

Anticorrosion of highway fence is usually used for powder impregnation method, which originated in the fluidized bed method, the fluidized bed was originally in the Winkler gas generating furnace used in petroleum and contact decomposition, developed a solid gas 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.

公路护栏网的涂装工艺由两个阶段来完成：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型槽模具 井盖钢模具 保定雅思 一次性止血带 保定养老院  保定水处理设备 一次性止血带  30～50%。

Coating process of highway guardrail is accomplished by two stages: the first stage is a fixed bed stage, the second stage is the stage of air transportation, continue to increase the flow rate 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 move 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 in fluidized bed is the key to ensure the uniformity of 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%.