Aluminum extruded heat sink is a kind of common heat sink in the life, But do you know how to make aluminum extruded heat sink? Make brief introduction to everybody by Lori which is heat sink manufacturer as below.

1. The first aluminum bar must be 150-200mm short aluminum bar or pure aluminum bar for the test of aluminum extrusion die with high density fin

2. Before the die test, the center of the aluminum extrusion machine must be adjusted. The extrusion shaft, the spindle and the outlet of the die base should be in one center line.

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

4. Aluminum mold heating temperature according to the conventional mold temperature, controlled at about 480℃, diameter of 200mm below the flat mold insulation time should not be less than 2 hours, if the split mold insulation more than 3 hours; The mould with diameter larger than 200mm shall be insulated for 4-6 hours to ensure the uniformity of the temperature of the mould core and the external temperature.

5. Before mold test or production, clean the inner tank of the spindle cylinder with clean cylinder pad and check whether the extrusion machine runs normally when empty.

6. During the trial or initial production, the extrusion machine will turn off automatically and switch to zero.From the minimum pressure to start slowly pressure, discharge about 3-5 minutes, aluminum filling process mainly control the pressure.The pressure should be controlled within 100Kg/cm2, and the ammeter data should be within 2-3a. Generally, 80-120kg /cm2 can be discharged, and then the extrusion speed can be gradually accelerated. In normal production, the pressure should be less than 120Kg/cm2.

7. Aluminum heat sink extrusion mold in the test or production process, such as the discovery of blocking mold, teeth, speed deviation is too big phenomenon to stop immediately, and in the way of point back to unload the mold, to avoid the mold scrap.

8. In the test mold or aluminum production process, the outlet must be unobstructed, support or jig loosening according to the discharge situation reasonable grasp.Observe and find any abnormal situation at any time and deal with it in time. Stop the machine immediately when the machine stops.

9. In the process of straightening, it is necessary to carefully test the changes before and after, operate in a standard manner, apply force moderately, and strictly guarantee the product quality.

10. According to the requirements of the aluminum production plan, make a reasonable measurement. When sawing, the feeding speed of the fins shall not be too fast to avoid the end end being injured.