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Troubleshooting (1)
What is "troubleshooting? Troubleshooting is an orderly process of finding faults and resolving faults that can slow down production and produce waste. Finding and troubleshooting is to reduce the occurrence of problems. In a sense, as long as potential problems do not recur, the more experience there is, the less technical requirements will be required. The result of the accumulation is the appearance of a statistical process control process chart called Statistical Process Control (SPC). Fortunately (or unfortunately), technology will never be useless or outdated, because potential problems are always hidden in every factor that affects printing and the combination of factors. The more you learn, the more bizarre problems you find. In screen printing, there can be no complete solution. To better find and troubleshoot should be done according to the following five criteria: Apply common sense and logical methods to solve the problem. 2. When problems arise, document them (including solutions, if known). 3. Continue to learn and supplement relevant knowledge to understand the relationship between various factors in screen printing and printing effects. 4. Classify according to their importance. 5. Find the solution step by step and solve the problem. Basic common sense When the button is pressed, the machine does not move. It is of no use to disassemble the operation panel to find the cause. Common sense and experience tell us that before checking the components in the operation panel, you should first check the power supply to see if it is short circuited or open circuited. When discovering and resolving problems in printed images, we must start with the simplest and most obvious reasons. For example, if the graphic is not printed, checking the supply of ink is more effective than simply increasing the pressure on the scraper. After solving a simple problem, you should assume what the next problem is. Assuming a slight change in the conditions, what will happen? Constantly compare your predictions with actual conditions. If you do not make assumptions (even if the wrong assumptions), it may be a lot of time wasted on the trial rather than spend on solving problems. Of course, if you don't understand anything, then you have to try it a little bit. Record and List To avoid being puzzled by the problems that arise, you apply accessibility tools. To establish your own reference manual, you must document the issues that arise and be as detailed as possible, including suspicious questions and ways to solve them. At the end of this article is a list of the Troubleshooting records that can be used or modified to suit everyone's specific situation. The factors in screen printing solve problems in printing, just as if you were going to see someone else. Your doctor's work requires physiology knowledge, and you should understand the connections and differences between various factors in the screen printing process. If you want to do a good job, you must clearly know: the impact of different stretches on the ink flow, the relationship between the speed and pressure of the blade, and the effect on the print after the combination of various factors. The organization arranges the influencing factors and corresponding results in a certain order according to the size of the effect. At first, write it on paper until you have a good experience in mind. Adding a table of your own makes it easy to identify suspicious causes based on probability and importance. Step-by-step checks When troubleshooting, it's important to know that a problem is often caused by many reasons. For example, the common "scratching" is caused by insufficient tension in the stretch, but the gap, ink viscosity, printing speed, and even the machine itself may cause "scratching." In order to better solve the problem, you should not do it overnight, otherwise the following problems will occur: The problem is getting worse. Although the problem has improved, you never know why it is. 3. Even if there are correct steps, the problem is still not resolved. On the other hand, if you only perform one step at a time, you will find: 1. If the problem gets worse, it means that your judgment is correct, but it is not adjusted correctly (if you should have reduced it, you have increased it). 2. If the problem improves (but does not resolve it completely), you will find at least one correct reason and operate it correctly. 3. If the problem persists, it means that your judgments and operations have nothing to do with this issue. If this operation was effective, the problem is not the same as before. The right tool for troubleshooting is also important. For example: Exclusion of textual problems requires observation and measurement. At this time, there is no doubt that a microscope (at least 100X) is a must. Of course, stereo microscopes or electron microscopes are better. If not only troubleshooting but also correcting problems and controlling processes, additional tools are needed. Micrometers, thickness gauges, gap gauges, durometers, dynamometers, viscometers, and even stopwatches are all required. Conclusion 1. Troubleshooting is to reduce the reliance on this mechanism. 2. Successful troubleshooting requirements: Understand basic common sense and logic Infer recording faults and solutions Familiarize yourself with the impact of screen printing on every factor. Organize your troubleshooting procedures. Step-by-step solution to problems 3. Have tools ready, where the measuring microscope is the most important.