Aluminum Extrusion,Suitable for power supply’s heatsink field | WEIHUA

Aluminum extrusion process:

Actual extrusion started with extrusion cast in aluminum rod, aluminum casting rod must be heated before extrusion to soften it, the heating good aluminum casting rods sheng ingot is put in the extruder barrel inside, and then driven by high-power hydraulic extrusion rod, the front end of the extrusion rod has a pressure pad, such heated soft aluminum alloy in dummy block under strong pressure from mold precision molding extrusion, get the final product.

The aluminum bar is the blank of the extrusion process. The aluminum bar for extrusion may be solid or hollow, usually cylindrical, and its length is determined by the extrusion spindles.Aluminum bars are usually cast, some are forged or pressed.It is usually made by sawing aluminum alloy bars with good alloy composition.The rods are normally heated to 450 degrees in a heating furnace before being sent to form, with about 10% remaining in the ingots.

Classification of extrusion methods:

1. According to the extrusion direction: forward extrusion, reverse extrusion, lateral extrusion

2. According to deformation characteristics: plane deformation extrusion axial symmetry deformation extrusion general three-dimensional deformation extrusion

3. According to the lubrication state: no lubrication extrusion lubrication extrusion ideal lubrication extrusion

Advantages of extrusion processing:

1. Improve the deformation ability of metal

The extrusion ratio of pure aluminum can reach 500, the extrusion ratio of pure copper can reach 400, and the extrusion ratio of steel can reach 40-50.

2. Extrusion products have high comprehensive quality

The extrusion deformation can improve the microstructure and mechanical properties of metal materials, especially for some aluminum alloys with extrusion effect, the longitudinal (extrusion direction) mechanical properties of the extruded products after quenching and aging are much higher than similar products produced by other processing methods.

3. Extrusion products have a wide range

Extrusion processing can not only produce pipe, rod and wire with simple section shape, but also can produce solid and hollow sections with very complex section shape, and variable section sections with gradual change and gradual change along the length direction of product section.

The range of dimensions is also very wide, from very large tubes and profiles with sections with an outer circle diameter of 500-1000mm to very small precision extrusions with sections the size of matchsticks.