First, why should the stainless steel spray nozzle be cleaned regularly, the reasons are as follows:
1. Erosion. When the liquid of high flow rate passes through the metal surface of stainless steel spray nozzle hole, it will erode the stainless steel spray nozzle hole, resulting in reduced pressure of stainless steel spray nozzle and irregular spray state. The probability of stainless steel spray nozzle erosion depends on the hardness of the liquid, spray pressure, the type of chemical materials used and their amount. In addition, the liquid particle impurities will also make stainless steel spray nozzle by severe erosion.
2. Accidental damage. Improper use and not timely maintenance is the main cause of stainless steel spray nozzle accidental damage. Although stainless steel spray nozzles are usually designed to be concave, the offset structure of fan-shaped stainless steel spray nozzles is vulnerable to damage.
3, corrosion. These chemicals can also cause corrosion of stainless steel spray nozzle materials when spraying the workpiece.
4. Blocking. The buildup of chemical materials and impurities on the inside or outside of the stainless steel spray nozzle can cause the stainless steel spray nozzle to block. This will affect the shape of the stainless steel spray nozzle spray, thereby affecting the spray pressure.
5. Temperature. stainless steel spray nozzle for a long time in high temperature or abnormal temperature work, will lead to stainless steel spray nozzle due to material softening and damage.
Two, stainless steel spray nozzle problem identification
Spray pump according to its rated capacity operation, stainless steel spray nozzle spray pressure will be reduced with the expansion of stainless steel spray nozzle aperture. For the damaged stainless steel spray nozzle, even if the actual flow rate of the stainless steel spray nozzle exceeds 30% of its rated flow rate, the change of atomization state is difficult to be identified by naked eyes.
The best way to identify problems with stainless steel spray nozzles is to observe pressure changes in the upper part of the nozzle. The position and accuracy of the pressure gauge is critical when comparing different stainless steel spray nozzles in the same pretreatment system. Usually the pressure gauge should be placed at the front end of the spray pipe. When determining the pressure change on the spray pipe, the spray pressure of the intact stainless steel spray nozzle should be taken as the benchmark, and the difference between the actual pressure and the benchmark pressure should be used to determine whether there is a problem with the stainless steel spray nozzle.
Three, the elimination of stainless steel spray nozzle problem
It is difficult for us to directly perceive the stainless steel spray nozzle problem, so we must first pay attention to the choice of stainless steel spray nozzle. Choose the right stainless steel spray nozzle, but also a complete set of maintenance and replacement plan.
Check stainless steel spray nozzle regularly. Including regular cleaning of stainless steel spray nozzle and regular inspection of stainless steel spray nozzle appearance is damaged. General pretreatment production line in the first few processes (such as pre-degreasing, degreasing) stainless steel spray nozzle every shift should be checked and cleaned, behind the process of spray inspection and cleaning frequency can be appropriate director.
Replace stainless steel spray nozzle regularly. The replacement frequency of stainless steel spray nozzle depends on its environment, the composition of spray liquid and the material of stainless steel spray nozzle. If the temperature is high and the spray contains impurities, the number of stainless steel spray nozzle replacement is relatively frequent.
It is very important to choose the appropriate stainless steel spray nozzle.
First, the use of stainless steel spray nozzle type affects the quality of the product. If the surface is not properly cleaned, the coating can easily corrode and cause defects.
Second, stainless steel spray nozzle in the use of water and chemical dose is different. Choosing the right stainless steel spray nozzle will ensure you don't overuse these expensive resources.
Third, choose appropriate corrosion resistant materials and appropriate stainless steel spray nozzle can maintain the use of stainless steel spray nozzle in the best state.
Finally, some stainless steel spray nozzles on the market today are designed to speed up disassembly and assembly, which greatly reduces downtime. In addition, depending on your application and the number of stainless steel spray nozzles changes, you can specify a "quick change", automatically calibrated stainless steel spray nozzles and stainless steel spray nozzles, which is the real advantage of its maintenance.
Choose chemically resistant stainless steel spray nozzles. There are now many stainless steel spray nozzles available that are specified to extend service life and reduce downtime.