1. Contour distortion and fluctuation due to unreasonable design of die hole, too fast extrusion speed and improper lubrication of die hole, the guide device is incorrect or not installed.

2. Bubbles and peeling are caused by excessive wear of the inner diameter of the extrusion cylinder, and the gap between the extrusion pad and the extrusion cylinder is too large; Oil and sewage grades are stained on the extrusion cylinder and extrusion pad; There are holes, trachoma and oil stains on the surface of ingot, and the surface of ingot is too rough; The extrusion cylinder temperature and blank temperature are too high, and the filling is too fast; The mold will be lubricated during extrusion and other reasons.

3. Extrusion cracking of aluminum alloy pipe. Because the temperature of extruded blank is too high, the extrusion speed is too fast. The uniform treatment of billet is not good; Unreasonable die design makes the velocity difference between the center and the edge too large.

4. The temperature of the pit or pit is too high, and the extrusion speed is too fast or uneven; The working zone of the mold is not smooth due to metal sticking; The hardness of the mold table belt is insufficient or the working belt is wide; The billet is too long and so on.

5. The unqualified size of aluminum alloy pipe is due to incorrect mold design or manufacturing defects; Improper mold maintenance; During the extrusion process, the billet temperature rises too high and the extrusion speed changes too much; The calculation of ingot billet length is not accurate, which is not enough to fix the length.

6. The delamination of aluminum alloy tube is due to the oil and dust on the surface of the blank; The surface quality of billet is not good, and there are large segregation tumors; There is residue on the surface of the mold; The analysis of aluminum pipe manufacturers is that the billet itself has delamination, bubbles and other reasons.

7. The scratches and convex edges of aluminum alloy pipes are due to defects or ribs in die processing; The sharp blade edge of the mold is sharp and not smooth; Foreign bodies on the working surface are not clean; The analysis of aluminum pipe manufacturers is that hard inclusions in billet are blocked by die holes and other reasons.

8. Poor performance of aluminum alloy pipe. Because the extrusion temperature is too low, the profile cannot reach the quenching temperature; The artificial aging system is not suitable; The instrument is out of control and the furnace temperature is too high or too low; The ingot structure is uneven and the cooling air volume is insufficient.

9. Because the extrusion residue is too short, the oil on the extrusion washer is not clean, the surface of the ingot is not clean, the length of the product cutting layer is insufficient, and the tail shrinkage caused by extrusion suddenly increases at the end of extrusion.

Evaporative cold aluminum tube is also a very common equipment, and it is used in many places now. It has been applied in many fields of life. Because the demand is increasing, the price is also rising. Many manufacturers are constantly producing evaporative cooling aluminum tubes, so what aspects should we consider when purchasing?

Evaporative cold aluminum tube is a new type of equipment. After technical improvement, it is now more familiar. Not only has many advantages, but also has quite a lot of functions. Because many industries will use it, and now there are more manufacturers on the market, we should pay attention to the selection of brands at this time. This is very important. Of course, don't blindly listen to other people's opinions. If you can, it's better to know and check those brands online now. Because under normal circumstances, big brands will produce high-quality products in order to attract customers and retain consumers. This is what we need. Only when these products are used can their life be guaranteed.

The products produced by different manufacturers of evaporative cooling aluminum tubes will have certain differences. If you want to purchase them, you should proceed from the quality, and you can guarantee its effect when you use them in the future. However, it may be slightly more expensive for enterprises to evaporate cold aluminum tubes, but you must know that you get what you pay for. In order to use it for a long time, it is better to choose a slightly more expensive one directly, because the manufacturer will never suffer, and if it is low, it will definitely cut corners. In the future, the original effect will not be achieved when it is used, and there may be problems after a few years. You will have to spend money to repair or replace it with a new one, which is not worth the loss.

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