Aluminum Channels

Aluminum Channels

An aluminum channel is an extruded aluminum product that is lightweight, has a high strength-to-weight ratio and is cost effective. One of many possible extruded aluminum shapes, aluminum channels are smooth, linear and fairly narrow. Extruded aluminum channels often provide a supportive frame for roll-formed products and are ideal for engineering and structural applications such as light building frames, frame extensions, light poles, lighting fixtures, window frames, car bumpers, hardware joints and boat dock ladders. Aluminum channels also have high electrical conductivity and are good heat conductors and reflectors, making them ideal for heat transfer and heat shield applications. Industries that benefit from aluminum channels include construction, industrial manufacturing, shipping, medical and automotive.

Aluminum channels are formed during the extrusion process, in which round aluminum stock called "billets" or "logs" are pressed by a ram through a die, which is a hollow profile that shapes the aluminum into a specific extruded shape as the billet is squeezed through. Aluminum channels can be made using two different types of extrusion process: indirect extrusion and direct extrusion. Direct extrusion holds the die stationary while the ram forces the aluminum alloy through the die opening, while indirect extrusion holds the die stationary as the hollow ram moves into the stationary billet from one end, forcing the metal to flow through the die. In addition, extrusion processes include hot extrusion, cold extrusion and warm extrusion. In cold extruding, aluminum billet is pressed through the die at room temperature or near room temperature. Warm extruding, or forging, is done on billets brought to temperature ranges between 800 and 1800 degrees F. Hot extrusions are performed on aluminum which has been fully plasticized by heat and is often performed in a vacuum to avoid oxidation. After an aluminum channel has been extruded, it is straightened by a stretcher.

Aluminum is the third most abundant element on Earth, yet it is one of the most recent metals to be used in industrial manufacturing processes with just over a hundred years of usage in industrial and commercial applications. This is because natural aluminum elements are compounds that need to be separated from the oxide alumina in order to create pure aluminum. The process of extracting aluminum ore from the Earth's surface is relatively costly, but aluminum channels have a far longer service life than most metal channels and may be fully recycled while retaining 100% of the material's original properties. Using aluminum channels in transportation often saves on carbon emissions, as aluminum is a far lighter metal than its alternatives, such as steel; aluminum combines stainless steel's beneficial properties of corrosion resistance and strength with 1/3 the weight. Recycling aluminum requires only 20% the amount of energy used by acquiring virgin materials; this energy savings is converted into a significant cost savings by aluminum channel extruders who use recycled aluminum materials.

Aluminum Channels Images Provided by Johnson Bros. Metal Forming Co.

Aluminum Channels Image Provided by Aluminum Extruded Shapes, Inc.