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In the process of CNC flame cutting, it is easy to have cross-sectional slag due to the unsuitable cutting oxygen pressure or cutting nozzle accessories, and the slag that is difficult to remove on the cutting section or lower edge will not only affect the finish of the cutting surface, but also have a greater or lesser impact on the subsequent processing operations. Wuhan Jinjia CNC Technology Co., Ltd. has summarized the problem of slag hanging in the flame cutting section based on many years of cutting technology research, and explained in detail the causes of various problems for easy reference by users
1. The lower edge is hung with slag.
Phenomenon: Continuous slag formation at the lower edge of the cutting section.
Reason: aThe cutting speed is too fast or too slow, the cutting nozzle number used is too small, and the cutting oxygen pressure is too low;
b.There is excess gas in the preheating flame, and the surface of the steel plate is rusted or unclean;
c.The height between the nozzle and the workpiece is too large, and the preheating flame is too strong.
2. Hanging slag occurs on the cutting section.
Phenomenon: There is hanging slag on the cutting section, especially in the lower part.
Reason: The alloy content is too high.
Hope it helps!!
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My experience: 1 tempering is not suitable, depending on the plate.
The thickness determines the pressure of oxygen and gas.
2. The preheating is not sufficient, or the gun is off the board. Too high.
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Check whether the air path, air pressure, speed, and flame size of the nozzle are within the configuration range.
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Adjust your blowing pressure or speed.
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It may be that the oxygen is turned on too little.
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We occasionally have some problems that affect the quality when using CNC flame cutting machines, in addition to affecting the appearance of parts, strictly.
Heavy ones may even cause deformation on the outer surface of the material, making it impossible to carry out secondary processing. Hanging slag became the main phenomenon, which due to the cutting of oxygen.
Pressure or cutting nozzle fittings are not suitable for cross-section slag defects, which are difficult to remove on the cutting section or lower edge.
The slag not only affects the finish of the cutting surface. Next, we will analyze and deal with the phenomenon of slag hanging in the flame cutting section;
There are several factors that lead to the slag of CNC flame cutting machine;
1. The cutting speed is too fast or too slow, the number of the cutting nozzle used is too small, and the cutting oxygen pressure is too low.
2. There is excess gas in the preheating flame, and the surface of the steel plate is corroded or unclean.
3. The height between the cutting nozzle and the workpiece is too large, and the preheating flame is too strong.
In general, the slag defect of the flame cutting section is caused by the insufficient oxygen pressure of the cutting. For such problems, it is in the cut.
Come to consult, as a professional CNC cutting machine manufacturer, we will explain the problems that can occur to customers one by one in the process of training.
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First, the cutting speed is too slow.
The second nozzle model is too small.
The oxygen pressure is too small.
Fourth, there is a problem with the air line of the mouthpiece.
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CNC flame cutting machine cutting slag:
1. Drop-shaped skewers of melted beans. A string of teardrop-shaped molten beans is formed on the top edge of the cut. The reason is that the surface of the steel plate is rusted or has oxide scale; The height between the cutting nozzle and the steel plate is too small, and the preheating flame is too strong; The height between the nozzle and the steel plate is too large.
2. The upper edge of the incision is concave and there is slag.
Nima: Go upstairs, since you say that the No. 2 mouth can be cut When you are cutting the board, you can cut it It doesn't matter if you cut into the line 70 board, you must cut from the edge of the board It is impossible to make a hole so 5mm is OK It's a waste After all, such a thick board The fire must be adjusted well I often cut the 70 board The gun must be adjusted vertically When cutting in, bake it with fire in the place where it is cut In the red, open high-pressure oxygen on the outside of the board Cut in at a slow speed Adjust to the right number of degrees when completely worn The board surface must be clean Otherwise, it is easy to break the fire It will be troublesome Where there is rust, it is best to use a grinder to grind it Cut thick plates comfortably A plate is cut for a day Just sit on the machine One shift is over Hehe I use a 70 plate for No. 4 cutting nozzle No pressure Oh Hehe If you don't know, it's better to use No. 5 or No. 6.
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