Radiator extrusion production process specification

1. For high-density tooth-to-tongue mold trials, the first aluminum rod must be a short aluminum rod or pure aluminum rod of 150-200mm.

2. Before trying the mold, the extrusion center must be adjusted so that the extrusion shaft, the ingot barrel and the outlet of the mold base are on the same center line.

3. During mold trial and normal production, the heating temperature of the aluminum rod should be between 480-520℃.

4. The heating temperature of the mold is controlled at about 480℃ according to the conventional mold temperature. The heat preservation time for flat molds with a diameter of less than 200mm shall not be less than 2 hours. If it is a split mold, the heat preservation time shall be more than 3 hours; for molds with a diameter greater than 200mm, heat preservation 4-6 Hours to ensure the uniformity of the mold core temperature and the external temperature.

5. Before mold trial or production, the inner container of the ingot barrel must be cleaned with a cylinder cleaning gasket, and check whether the dry running of the extruder is normal.

6. When trying out the mold or just starting production, the automatic gear of the extruder is turned off, and the switches of each section are reset to zero. Start slowly from the minimum pressure and discharge the material for about 3-5 minutes. The pressure is mainly controlled during the aluminum filling process. The pressure is controlled within 100Kg/cm2, the ammeter data is within 2-3A, generally 80-120Kg/cm2 can be discharged, and then it can be slowly accelerated. During normal production, the extrusion speed is subject to pressure less than 120 Kg/cm2.

7. During mold trial or production process, if mold blockage, eccentric teeth, excessive speed deviation, etc. are found, the mold should be shut down immediately, and the mold should be removed by point retreat to avoid mold scrap. 8. During the trial mode or production process, the discharge port must be unobstructed, and the cushion support or clamp slack should be reasonably controlled according to the discharge situation. Observe and find abnormal conditions at any time, and deal with them in time, and stop immediately when the machine stops.

9. During the straightening process, it is necessary to carefully check the changes before and after, operate in a standardized manner, use moderate force, and strictly guarantee the product quality.

10. Set the length reasonably according to the requirements of the production plan. When sawing, the saw tooth feeding speed should not be too fast to avoid damage to the end. The end must be clamped to remove the flash and burr.

11. The installation of the basket should be standardized, including the mats should be placed reasonably to avoid damage to the profile.

12. The aging temperature of the profile is controlled at 190±5℃, the temperature is kept for 2.5-4 hours, and it is air-cooled after being released from the furnace.