What is mold trial:
1. Make the processing running time longer to stabilize the melt temperature and hydraulic oil temperature.
2. Adjust the machine conditions according to the size of all finished products is too large or too small. If the shrinkage rate is too large and the finished products appear insufficient shooting material, you can also refer to increase the size of the gate.
3. If the size of each mold hole is too large or too small, it should be corrected. If the size of the mold hole and the door is still correct, it should try to change the machine conditions, such as the filling rate, mold temperature and pressure of each part, and check whether some mold holes are slow to fill the mold.
4. According to the matching situation of finished products of each mold hole or mold core shift, it is allowed to adjust the filling rate and mold temperature again to improve its uniformity
5. Check and modify the faults of the extruder, such as the poor oil pump, oil valve, temperature controller and so on, will cause the change of processing conditions, even if the perfect mold can not play a good work efficiency in the poorly maintained machine.
After testing all the recorded values, keep a set of samples so that you can check and compare the corrected samples for improvement.
1. In the process of aluminum extrusion die test and aluminum extrusion, the following aspects should be paid attention to:
A. Determine the temperature of the die bar before extrusion of aluminum alloy profiles, whether it meets the requirements of extrusion temperature, and whether the heating has penetrated core (the placement of the die in the heating furnace is very important, and there should be a certain heating gap between the die and the die).
B. Aluminum extrusion mold must first check whether the key parts of the new mold are qualified, such as: plate groove, cooling water, etc... After adjusting the mold lock, find the origin of the blank, according to the origin of the supercharging, two fast, a piece of position, and then adjust the length of the thimble, according to the wall thickness of the product to judge the cooling time, injection time. According to the size of the product judge spoon size, soup quantity. Slow injection starts. Remember that if there is a risk of mold sticking, the mold must be preheated first. When slow injection is used, the mold brush oil does not spray water. Alignment center position, so as to avoid collapse, plug phenomenon.
C. Suitable extrusion speed should be selected for different aluminum alloy profile moulds, so as to avoid poor discharge caused by too fast and too urgent.
D. In the process of extrusion of aluminum alloy profiles, we should pay attention to the quality of aluminum rods to avoid mold collapse caused by impurities of aluminum rods, etc.
2. Aluminum extrusion mold repair is a very important link, but the first thing to consider is the strength of the mold repair, to ensure the strength of aluminum extrusion mold on the basis of mold repair. Less than the last degree is generally not used to burn welding, because burning welding has a significant impact on the life of the die. Especially the welding of working belt, easy to shorten the life. For the quick and slow repair of profiles, generally use the slow place repair and do not use the fast place slow. So far, reducing the burden on the mold construction can ensure its life to a certain extent. Of course, improving the level of mold repair and reducing the number of mold trials is also one of the ways to improve the service life of the mold.
3. In the process of mold cooking, special attention should be paid to the link of taking punching material, especially in some screw holes or more fragile places, otherwise, it is easy to destroy the mold.
4. The handling process of aluminum extrusion die should be carried out carefully to avoid bumping into the work belt and other places. Before the mold is put into the warehouse, be sure to clean it and check the mold carefully and deeply to see if there are any small cracks and damage.
5. The process data of the finished mold must be effectively managed, such as the mold repair scheme, processing details, extrusion process, etc. Because these can become the subsequent supplementary mold or similar mold copy object, this can effectively improve the mold on the machine pass rate.
In short, the improvement of extrusion die life depends on the perfect link of design, manufacturing, use and subsequent maintenance processes. Relying on a single link can not effectively achieve the purpose, through the effective integration of all links, I believe that the life of the mold can be improved accordingly.
Aluminum alloy die casting mold test:
First of all, check whether the key parts of the new mold are qualified, such as: plate groove, cooling water, etc... After adjusting the mold lock, find the origin of the blank, according to the origin of the supercharging, two fast, a piece of position, and then adjust the length of the thimble, according to the wall thickness of the product to judge the cooling time, injection time. According to the size of the product judge spoon size, soup quantity. Slow injection starts. Remember that if there is a risk of mold sticking, the mold must be preheated first. When slow injection is used, the mold brush oil does not spray water.
