Extrusion Aluminum Alloy

Extrusion Aluminum Alloy

High Quality Extrusion Aluminum Alloy Products Product Description and Process High Quality Extrusion Aluminum Alloy Products Production process: cold extrusion process Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc. Surface treatment process: anodic...

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High Quality Extrusion Aluminum Alloy Products

Product Description and Process

High Quality Extrusion Aluminum Alloy Products

Production process: cold extrusion process

Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.

Surface treatment process: anodic oxidation, Dacromet coating, paint coating, powder coating, electrophoretic coating etc.


Product Material and Uses

Normally produce with aluminum L1, L2, L3, L4, L5, Aluminum alloy LF21, LY11, LY12, LD10, Brass H62, H68, carbon steel Q195, Q215, Q235, Q255, 10, 15, 20, 25, 30, 35, 40, 45, low alloy steel 15Cr, 20Cr, 20MnB, 16Mn, 30CrMnTiA, 12CrNiTi, 35CrMnSi, stainless steel 1Cr13, 2Cr13, 1Cr18Ni9Ti, etc.

The extrusion products are widely used for auto-car parts, truck parts, train parts, vehicle components, aviation industry components, gear parts, spline parts, universal joint crossing shaft, other machinery components, etc.


Cold Extrusion Process

The process of cold extrusion is carried out at room temperature or at marginally elevated temperature, with the assistance of Extruder and Extrusion Machines. These equipment / machines are specially developed on the basis of innovative Extrusion Technology. Cold extrusion can also be defined as the process of shaping of a cold metal by striking a slug. This striking is done with a punch (in closed cavity), which forces the metal in upward direction around the punch. This process is also called Cold Forging, Cold Pressing, Extrusion Pressing, and Impact Extrusion.

Cold extrusion is done at room temperature or near room temperature. The advantages of this over hot extrusion are the lack of oxidation, higher strength due to cold working, closer tolerances, better surface finish, and fast extrusion speeds if the material is subject to hot shortness.

Materials that are commonly cold extruded include: lead, tin, aluminum, copper, zirconium, titanium, molybdenum, beryllium, vanadium, niobium, and steel.

Examples of products produced by this process are: collapsible tubes, fire extinguisher cases, shock absorber cylinders and gear blanks.


Another Definition of Cold Extrusion

Cold extrusion is also defined as a compressive forming process (push-through), where the starting material is billet / slug and the process is carried out at the room temperature. During the cold extrusion process, deformation heating of the deforming material takes place at several hundred degrees. Deformation heating is the process of conversion of deformation work to heat. In general, a punch is used for applying pressure to the enclosed billet in the stationary die. This pressure can applied partially or completely, as per the requirements. On the basis of punch, die design along with the resulting material flow, we can classify cold extrusion into three major processes:

• Forward Extrusion

• Backward Extrusion

• Lateral Extrusion.

Forward Extrusion: In this process, the material flows in the direction of the punch displacement. Also, the rod / tube diameter is reduced by forcing it in a die, through an orifice. A variation of this process is known as Hooker Extrusion. In this process, a billet (tubular) is forced by way of a forward extrusion die. This force is applied with a punch and a mandrel that act as a pusher and reduces the outer diameter along with elongating the tubular portion, respectively.

Backward Extrusion: In this process, the material flows in the other direction of the punch displacement. The billet, which is enclosed in die, is forced to flow in the backward direction from the annular region that resides amidst the die and punch.

Lateral Extrusion: In this process, the material flows in the perpendicular direction of the punch displacement. The material, which is enclosed by the punch and die, is forced to flow through orifices that are radially placed.


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