Recently, many friends have reported that they have encountered problems such as large amount of dry ice, unclean cleaning, residue, and repeated cleaning when using dry ice cleaning machines. I explained to you some relevant precautions when using dry ice cleaning machines, and analyzed the reasons for the above-mentioned similar problems with you. Specifically, the angle, distance, movement speed, and amount of dry ice spraying will affect the effect of dry ice cleaning and the amount of dry ice used.
Clean cleaning is everyone's cleaning goal, but at the same time, the cleaning cost must also be considered. The amount of dry ice used and the cleaning time per unit product will directly affect the cleaning cost. For different cleaning objects, they must be tested and debugged during the initial cleaning, and corresponding adjustments must be made in the four aspects of dry ice spraying angle, distance, movement speed, and dry ice spraying amount, so that it can achieve the best cleaning effect and save dry ice. Record the relevant cleaning data in four aspects and form a complete set of cleaning operation guidance documents to truly achieve the goal of reducing costs and increasing efficiency.
Starting today, I will conduct multiple experiments to test the general data of dry ice spray angle, distance, movement speed, and dry ice spray volume under the best cleaning effect, so that friends who use dry ice cleaning can refer to it. What can be referred to is not only the relevant data, but more importantly the experimental method. When the target cleaning object is initially cleaned and debugged, you can refer to my experimental method.
Today we will first test the effect of spray angle on dry ice cleaning effect. What is the best angle for dry ice cleaning? The machine used in this experiment is our company's energy-saving dry ice cleaning machineYJ-04. The target cleaning object is a PCB board after spraying paint.Other test standard data are as follows:
| Size of sprayed dry ice particles | Blasting distance | Dry ice output | Dry ice spray gun movement speed |
| 0.2mm-0.6mm | 100mm | 150g/min | 250mm/min |
This test is to see how effective dry ice cleaning is at different water blasting angles. We selected angles from 30° to 90° and tested them every 15°, that is, we tried five angles of 30°, 45°, 60°, 75° and 90°, and each angle was tested three times. The actual pictures of the test results are as follows:
As you can see from the pictures, the larger the blasting angle, the cleaner the cleaning. At 30°, almost nothing can be washed off. At 45° to 75°, although some places can be washed, the washing is not complete and not coherent, and there are still many paint spots that have not been washed off. However, when the angle is adjusted to 90°, the washing is far and coherent, and the effect is the best.
Conclusion of this experiment: The best cleaning effect is achieved when the dry ice spray gun is perpendicular (90°) to the target cleaning object for spraying.