1. What should I do if the emulsified oil is not emulsified after flushing? In the production process of emulsified oil, some volatile stabilizers are generally added. If the process cannot be operated according to the process requirements or the inferior base oil is used as the raw material, this phenomenon may occur. The simplest problem is to deal with this problem. The solution is to add some emulsified oil that can be emulsified. After stirring, it can be emulsified, or some alcohol can be added, and the ratio is controlled at about 1% to 2%. 2. What should I do if the workpiece is not cut? In the actual cutting process, the workpiece is often not cut, and sometimes it cannot be cut at all. This kind of situation usually occurs when cutting or cutting high-hardness materials such as stainless steel. The fundamental reason is that the working fluid is not good. In order to remove the characteristics of the product, the emergency method is to add some detergent or increase the concentration of the working fluid, but the most fundamental method is to switch to a good working fluid. (In some areas, due to the use of hard water, there is also the problem of cutting.) 3. When the molybdenum wire is cut in the forward and reverse directions, the cutting speed is inconsistent, even if one direction does not go, what should I do? This situation is often encountered in high-thickness cutting, the root cause is the problem of working fluid, of course, and other factors such as: frequency conversion tracking speed, uniformity of molybdenum wire tension and so on. By the way, it is better to turn the frequency conversion tracking faster when cutting high-thickness workpieces, because there is basically no broken wire during over-tracking, but in the case of under-tracking, the processing is unstable and the broken wire is caused. 4. How to reduce the probability of molybdenum wire breaking at both ends of the wire barrel. The high-speed wire cutting molybdenum wire should be frequently reversed at both ends of the wire barrel, so the molybdenum wire at both ends will repeatedly receive the impact of the pulling force, so that the molybdenum wire at both ends is fatigue damaged, so the service life of the molybdenum wire should be extended by one. The shift (about 8 hours) will move the changeover switch inward. This method is especially important in high current and high efficiency machining. 5. How to extend the service life of molybdenum wire The molybdenum wire will be damaged by itself when it is discharged with the workpiece, but the degree is small and flawed. Therefore, after replacing the new molybdenum wire, it is better to cut with small energy processing parameters (making the damage less). Wait until the color of the molybdenum wire is basically whitish and then switch to normal high current for cutting. Of course, it is best to let the molybdenum wire run for 5 to 10 minutes before replacing the molybdenum wire for cutting, so that the original internal stress is released. 6. How to reduce the probability of breaking the molybdenum wire at the cutting point Generally, the method of automatically cutting the workpiece from the outside by using the machine tool automatic frequency conversion can reduce the probability of the molybdenum wire breaking at the cutting point, and at the same time ensure the good supply of the cooling liquid, so as to absorb the discharge explosive force and cause the disturbance of the molybdenum wire, the best distance of the workpiece. The upper and lower spouts are 5 to 10 mm, so that the coolant can better wrap the molybdenum wire. 7. How to adjust the frequency conversion tracking speed Adjusting the frequency conversion tracking speed itself does not have the ability to increase the processing speed, and its function is to ensure the stability of the processing. When the tracking speed is not properly adjusted, it will significantly affect the processing index and the quality of the cut surface, and it is possible to produce broken wires. The best frequency conversion tracking speed adjustment can refer to the following two basis: First of all, the optimal machining current should be about 80% of the short-circuit current (in the initial processing, the molybdenum wire can be pressed on the side of the workpiece and then the high frequency is turned on. At this time, the current meter shows the short-circuit current value). It is judged whether the feed speed adjustment is appropriate; secondly, it can be judged by the swing condition of the ammeter pointer, and the current meter pointer should be basically not moved during normal machining. If you sway down often, it means under-tracking, you should adjust the tracking speed quickly; if you sway frequently, it means frequent short circuit, it belongs to over-tracking state, you should slow down the tracking speed; if the pointer swings back and forth, the processing is not Stable, it should be determined that the parameters are adjusted (such as adjusting pulse energy, working fluid flow, wire routing system including guide wheel, bearing state) and then processing, otherwise it is easy to cause broken wire. 8. Broken wire cause and treatment Broken wire is the most worrying thing for wire cutting operators. It will increase the workload and the mold will be scrapped. Therefore, it should be taken seriously. The following reasons and troubleshooting methods are as follows: Method for eliminating the cause of broken wire (1) Phenomenon: It is regularly broken, and it is often broken on one side or both sides. Cause: When the wire cylinder is reversing, the high frequency power supply cannot be cut off in time to make the molybdenum wire blow. Method: Adjust the proximity switch. If it is still invalid, it is necessary to detect the circuit part. It is necessary to ensure that the high frequency is switched first. (2) Phenomenon: Broken wire is just started when cutting. Cause: The machining current is too large, the feed is unstable; the molybdenum wire is very shaken; the surface of the workpiece has burrs, or there are non-conductive oxide scales or sharp edges. Method: 1. Decrease the electrical parameters and reduce the current; (Note: the current should be adjusted appropriately when the cut-in is entered, and then increase the current when there is no spark on the sidewall surface of the workpiece after cutting.) 2 Check the wire system part, such as the guide wheel. Whether the bearing and the wire barrel have abnormal jumping and vibration; 3. Remove the scale and burrs. Polyester Nylon Yarn,Weaving Knitting Nylon Yarn,Spandex Nylon Yarn,High Strength Nylon Yarn BEIJING FINECAST INTERNATIONAL CORPORATION , https://www.cfic-finecast.com