河北静电喷枪厂

Misunderstandings 1: the higher the spray gun voltage, the faster the better the powder.

问题解析

Problem analysis

（1）根据静电喷涂的基本物理原理我可以知道，当充电电压逾越一定数值时反而会激化 “ 法拉第效应 ”和“ 反电离效应 ” 发生，更加影响上粉率。

(1) according to the basic physical principle of electrostatic spraying, I can know that when the charging voltage exceeds a certain value, it will intensify the "Faraday effect" and "anti ionization effect", which will also affect the rate of powder addition.

（2） 静电喷枪电压过高容易造成枪尖打火的现象，容易在工件外表留下针孔，造成表观质量不良。

(2) the high voltage of the electrostatic spray gun is easy to cause the fire at the tip of the gun. It is easy to leave a pinhole on the surface of the workpiece, resulting in poor apparent quality.

（3） 高压打火的现会增加喷粉室内粉尘燃烧的现象。 因此，实际使用过程中应当根据粉末的特点，工件的特点等调节电压至适当的阶段才干获得比较良好的喷涂效果。

(3) high pressure fire will increase the combustion of dust in the powder chamber. Therefore, the actual application process should be based on the characteristics of the powder, the characteristics of the workpiece and so on, and adjust the voltage to the appropriate stage, so that we can get a better spray effect.

误区二：形状简单的工件可以使用性能差些的喷枪。

Myth two: a simple piece of work can use a less efficient spray gun.

问题解析

Problem analysis

（1） 有些操作员认为工件的形状简单，所以不需要性能很好的喷枪。事实上性能好的喷枪不仅仅是对形状的适应能力强，更重要的出粉状态的均匀水平会实现更好的表观涂层和上粉率。并且上粉率高了会节约粉末，降低生产成本。

(1) some operators think the shape of the workpiece is simple, so there is no need for a good performance gun. In fact, the good performance of the spray gun is not only a strong adaptability to the shape, but also more importantly, the uniform level of the pulverized state will achieve better apparent coating and up powder rate. And the high powder rate will save the powder and reduce the cost of production.

（2）静电性能好也会加快生产速度，提高工作效率。

(2) good static performance will speed up production speed and improve work efficiency.

（3） 上粉均匀也会降低废品率，使生产管理更加轻松。

(3) uniform powder will also reduce the rate of waste products, making production management more relaxed.

（4） 性能不好的喷枪由于使用的元器件性能比较差，故障率会高多，即使厂家及时维修也难免耽误生产。因此，工件形状绝对不是选择性能差的喷枪的理由。

(4) the poor performance of the spray gun because of the poor performance of the components, the failure rate will be much higher, even if the manufacturer in time maintenance also can not avoid delay production. Therefore, the shape of the workpiece is not the reason for choosing a low performance spray gun.

误区三：误认为喷枪喷出的粉末透明度低、直观感觉浓度大的喷枪出粉量大。

Misunderstandings three: mistaken idea that the powder of the spray gun has low powder transparency and a large intuitionistic feeling concentration has a large amount of powder.

问题解析

Problem analysis

充电性能好的喷枪，由于能够给喷出的粉末颗粒充上足量的静电荷，从而使粉末颗粒之间获得足够的相互间的静电排斥力，这样的粉末离开喷枪后粉末颗粒之间不粘连，呈现出非常好的雾化状态，从侧面看，会感到粉末均匀透明度高，造成“ 出粉少 ” 错觉。而充电性能不好的喷枪喷出的粉末，粉末颗粒之间没有足够的静电排斥力，粉末颗粒之间成片粘连、雾化效果不好，从喷枪的正面看，喷出的粉末透明度低，往往造成“ 出粉多 ” 假象。

The charging gun performance, due to the electrostatic charge on the spray powder filling enough, can obtain the mutual electrostatic repulsion between the particles of the powder enough, no adhesion between such a powder gun left after the powder particles, showing a very good atomization state, from the side, will feel the powder transparency high, cause "powder" illusion. However, there is not enough electrostatic repulsion between powder particles discharged by charging gun with poor charging performance, and particle adhesion and atomization effect between powder particles are not good. From the front side of the spray gun, the powder transparency is low, which often causes the illusion of "too much powder".

误区四：喷枪出粉量越大，上粉率越高，工作越快。

Misunderstanding four: the bigger the powder output, the higher the powder rate and the faster the work.

问题解析

Problem analysis

（1） 喷枪的上粉率是由静电性能和出粉状态共同决定的，只有电场强度与出粉量达到最佳配合点的情况下才实现最佳上粉率。

(1) the powder charge rate of the spray gun is determined by the electrostatic property and the pulverized state. Only when the electric field intensity and the powder output reach the best matching point, can the best powdering rate be achieved.

（2） 喷枪出粉过大会影响出粉状态的均匀，这就是许多大粉量喷枪的出粉状态很不均匀的根本原因。而不佳的出粉状态则有可能造成涂层厚度不均匀的问题。

(2) the powder out of the spray gun affects the uniformity of the powder state, which is the fundamental reason for the uneven powder production of many large powder guns. The poor powder state may cause the uneven thickness of the coating.

（3）经大量实验数据及实际工作经验得出喷枪的出粉量在 450g/min 就满足工作需求，而过大的出粉量会导致有一局部粉末根本无法带电，没有附着力，直接落入回收系统中，造成严重的浪费。

(3) by a large number of experimental data and practical experience that gun powder amount can meet the work requirement in 450g/min, and large amount of powder will lead to a local powder cannot be charged, no adhesion, directly into the recovery system, resulting in serious waste.

（4） 性能优异的静电喷枪，正是根据电场强度与出粉量的最佳配比开发的，不但杜绝了不必要的浪费，更使出粉状态均匀完美，更加提高了上粉率。因此，出粉量不是越大越好，但也不是越小越好。

(4) the electrostatic spray gun with excellent performance is developed according to the best ratio of electric field strength and powder output. It not only eliminates unnecessary waste, but also makes powder status even and perfect, and improves the rate of powder addition. Therefore, the greater the amount of powder, the better, but it is not the smaller the better.