What Are the Processing Methods of Industrial Aluminum Profiles? -WJW Aluminum Supplier Aluminum

The work process and precautions of aluminum extrusion machine 1. Working process 1 of aluminum extrusion machine. Check whether the oil pressure system leaks oil and the air pressure is normal. 2. Check whether the conveyor belt, cold bed, and storage table are damaged and scratched.

three. Before drawing, the length of the aluminum profile should be confirmed. In the predetermined pull rate, that is, the movement of the main card, the pull rate of 6063T5 is generally 0.5%-1%, and the pull rate of 6061T6 is 0.8%-1.5%.

Four. Determine the clamping method according to the shape of the aluminum profile. Large -seater hollow materials can be inserted into the stretch pad, but you should try to ensure that enough clamping area. 5. When the aluminum profile is cooled to less than 50 degrees, the profile can be stretched. 6. When the profile is bent and distorted, the twist must be corrected first, and then stretched. Number 7. Perform tensile tests for the first and second heels to determine whether the predetermined stretch rate and clamping method are appropriate. Veimage of the plane gaps, expansion of the outline, and the expansion of the outline, if it is not appropriate, appropriately adjust the extension rate if it is not appropriate. 8. When the normal tensile rate still cannot eliminate bending, twisting or qualified geometric size, the operator should be notified to stop squeezing. No.9. The profiles on the cooling platform shall not rub, collide, and stack it to prevent scratching. 2. Precautions for aluminum profile extrusion molds

1. The aluminum profile section itself is ever -changing, and the aluminum profile squeezing industry has developed to this day. The aluminum alloy and aluminum profile section itself are also important advantages such as ever -changing, clean organic body, and good strength. At present, aluminum profiles are used to replace raw materials. Due to the special section of some profiles, mold design and manufacturing are difficult. If the conventional squeezing method is still difficult to reach the rated output of the mold, it is necessary to strictly control the production process parameters with special processes in order to normally produce

2. Choose a suitable extruder for production. Before squeezing production, the section size of the profile should be determined according to the complexity, wall thickness size and extrusion coefficient of the section of the profile.

three. Reasonably select steel ingots and heating temperatures, uniformly control steel ingots, and strictly control the alloy composition of squeezing steel ingots. Enterprises require the grain size of the steel ingot to meet the first -level standard to improve the plasticity and reduce the opposite sex. When there are gas, holes, loose tissues or central cracks in the steel ingot, the sudden release of the gas during the squeezing process is similar to "Shot", which suddenly reduces the load and load of the local workband of the mold to form a huge local impact load. There was a great impact.

Four. Optimize the squeezing process and extend the life of the mold. In squeezing production, reasonable measures must be taken to ensure the structure and performance of the mold, and a proper squeezing speed must be taken. During the squeezing process, the squeezing speed should generally be controlled below 25mm/s. When the squeezing speed is too fast, the metal flow will be uneven, resulting in the reasonable choice of the mold workband and the squeezing temperature. The heating temperature of the mold, the temperature of the steel ingot cylinder and the temperature of the aluminum rod. The low temperature of the aluminum rod can easily lead to an increase in squeezing pressure or the phenomenon of cars. The mold is prone to local minimally flexible deformation or cracks at the stress concentration site, causing the mold to scrap it in advance. When the temperature of the aluminum rod is too high, when the mold collapses under high pressure, the metal tissue will soften. The uneven heating temperature of the steel ingot will reach 460 520 C, and the reasonable heating temperature of the average steel ingot will be 430 480 C. When the temperature of the aluminum rod is too high, the metal structure will soften, and even the mold will be blocked on the surface of the mold work area (when the mold collapses under high pressure).

5. In the early stage of the use of squeezing molds, it must be reasonably nitrogen seepage treatment. It should be noted that the surface of the surface cannot be completed at one time. During the mold service, it must be repeatedly nitrogen seepage treatment 3-4 times. Generally, the thickness of the nitrogen seepage layer must be about 0. The 15 mm mold cavity should be cleaned, without residual alkali or foreign body particles. Under normal circumstances, the number of nitrogen seepage of the mold should not exceed 4-5 times. It should be noted that the nitride time should not be too frequent, otherwise the working area will be easily layered.

6. The working zone of the mold must be grinded and polished to put it on the machine, and it is usually necessary to polish the work belt to the mirror. The workband of the mold must be grinded and polished before the machine is installed on the machine, and the working belt generally requires polishing to the flatness and verticality of the mirror strap facing the mirror. The quality of nitrogen is determined to a certain extent the smoothness of the working belt polishing. The mold cavity must be cleaned with high -pressure gases and brushes. There is no dust or impurities. Otherwise, it is easy to pull out the workband under the driver of the metal to make the rough surface or labeling of the profile products.

7. Squeezing the mold during production is generally about 2 to 3 hours. When using the mold, there must be mold brackets, mold sleeves and support pads to avoid the contact surface between the outlet surface and the support pad, because it is too small, because because The inner holes of the support pad are large, causing the mold to deform or break.

8. Use the correct base washing (boiling mold) method. After removing the mold, the mold temperature is 500 C. If the temperature of the mold drops rapidly, the mold is easy to crack. The correct method is to place the mold in the air 100 -150 C, and soak it in alkaline water after removing the mold. After squeezing, the squeezing rod shrinks in front of the squeeze tube, then squeezed the tube to retract, and then remove the residual aluminum in the diversion of the mold with the same pressure, and then cook the alkali.

9. The use intensity of the mold is from low to high to low. In the middle of the mold, because the performance of the mold is basically stable, the strength of the mold can be appropriately improved. In the later period, the metal structure of the mold began to degenerate. After a long period of production and use, the fatigue strength, stability, and toughness of the mold began to enter the decline curve. At this time, the strength of the mold should be appropriately reduced until the mold is scrapped.

10. Strengthen the use and maintenance records of molds during the production process, improve the tracking records of each set of molds, and strengthen the convenient management of mold use and maintenance records in the squeezing production process.