What Is Aluminum Extrusion<\/span>\uff1f(Definition)<\/span><\/b><\/h2>\nAluminum extrusion is an aluminum metal forming process. This manufacturing process turns aluminum alloy into an aluminum product with a specific cross-section. <\/span>This specific cross-section can be solid, hollow or semi-hollow in any shape. Aluminum extrusion is the process of passing an extrusion billet through a steel die with a specific cross-section. A strong pushing force causes the extrusion billet to form an aluminum product with the same cross-section as the die at the die opening. <\/span><\/p>\nThe process of aluminum extrusion is often explained simply as squeezing toothpaste out of a tube. The tube opening is round, so the extruded toothpaste is a solid cylinder. When the die opening is similarly round, the extruded aluminum product is an aluminum bar.<\/span><\/p>\n![\"aluminum](\"https:\/\/www.fonnovaluminium.com\/wp-content\/uploads\/2019\/08\/aluminum-extrusion-fonnov-aluminium.png\")
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In life, we commonly see aluminum tubes, aluminum bars, aluminum angles, aluminum channels, and aluminum beams as aluminum products produced through the aluminum extrusion process. In addition to these simple shapes, there are complex designs in industry that require aluminum extrusion manufacturing. More and more products are required to be lightweight, which also makes aluminum products replace steel products.<\/p>\n<\/div><\/div><\/div><\/div><\/div>
Different Types of Aluminum Extrusion Process<\/strong><\/h2>\n<\/div>Hot Extrusion Vs. Cold Extrusion Vs. Warm Extrusion<\/strong><\/h3>\nAccording to the different temperatures of aluminum extrusion billet, the aluminum extrusion process can be divided into hot extrusion, cold extrusion, and warm extrusion.<\/p>\n<\/p>\n
\n\n\n\nHot Extrusion<\/b><\/td>\n A process in which aluminum billets are heated to a recrystallization temperature range (400-500 degrees Celsius) for extrusion. In this temperature range, aluminum has very good plasticity, increased fluidity, and is easy to form.<\/p>\nThe majority of extruded aluminum products are produced by hot extrusion, especially for complex sections as well as large-size sections.<\/td>\n<\/tr>\n
\nCold Extrusion<\/b><\/td>\n A process in which aluminum billets are extruded without heating.<\/p>\nThe cold extrusion process is suitable for the production of small-sized parts. The surface finish is better than the hot extrusion.<\/td>\n<\/tr>\n
\nWarm Extrusion<\/b><\/td>\n A process in which aluminum billets are heated, but not to the crystallization temperature range for extrusion.<\/p>\nWarm extrusion is not widely used at present.<\/td>\n<\/tr>\n<\/thead>\n<\/table>\n<\/div>\n
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Direct Extrusion Process Vs. Indirect Extrusion Process<\/strong><\/h3>\nAccording to the direction of flow of the aluminum billet relative to the die in the extrusion process, the aluminum extrusion process can be divided into direct extrusion(forward extrusion) and indirect extrusion(backward extrusion). Both production processes are hot extrusion.<\/p>\n<\/p>\n
\n\n<\/thead>\n\n\nIndirect Extrusion (Backward Extrusion)<\/b><\/td>\n The extrusion billet remains stationary and the aluminum is extruded in the opposite direction of the ram movement.<\/p>\nAluminum bars and aluminum seamless tubes are usually produced by the indirect extrusion method to ensure a more homogeneous internal structure.<\/td>\n<\/tr>\n
\nDirect Extrusion (Foward Extrusion)<\/b><\/td>\n Aluminum billets are extruded through the die opening in the direction of the movement of the extrusion billet during extrusion. The majority of extruded aluminum is produced by direct extrusion. We will focus on this process to explain the specific steps.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n<\/div>
The process of aluminum extrusion is often explained simply as squeezing toothpaste out of a tube. The tube opening is round, so the extruded toothpaste is a solid cylinder. When the die opening is similarly round, the extruded aluminum product is an aluminum bar.<\/span><\/p>\n In life, we commonly see aluminum tubes, aluminum bars, aluminum angles, aluminum channels, and aluminum beams as aluminum products produced through the aluminum extrusion process. In addition to these simple shapes, there are complex designs in industry that require aluminum extrusion manufacturing. More and more products are required to be lightweight, which also makes aluminum products replace steel products.<\/p>\n<\/div><\/div><\/div><\/div><\/div> According to the different temperatures of aluminum extrusion billet, the aluminum extrusion process can be divided into hot extrusion, cold extrusion, and warm extrusion.<\/p>\n<\/p>\n The majority of extruded aluminum products are produced by hot extrusion, especially for complex sections as well as large-size sections.<\/td>\n<\/tr>\n The cold extrusion process is suitable for the production of small-sized parts. The surface finish is better than the hot extrusion.<\/td>\n<\/tr>\n Warm extrusion is not widely used at present.<\/td>\n<\/tr>\n<\/thead>\n<\/table>\n<\/div>\n \n<\/div> According to the direction of flow of the aluminum billet relative to the die in the extrusion process, the aluminum extrusion process can be divided into direct extrusion(forward extrusion) and indirect extrusion(backward extrusion). Both production processes are hot extrusion.<\/p>\n<\/p>\n Aluminum bars and aluminum seamless tubes are usually produced by the indirect extrusion method to ensure a more homogeneous internal structure.<\/td>\n<\/tr>\n \n<\/div><\/p>\nDifferent Types of Aluminum Extrusion Process<\/strong><\/h2>\n<\/div>
Hot Extrusion Vs. Cold Extrusion Vs. Warm Extrusion<\/strong><\/h3>\n
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\n Hot Extrusion<\/b><\/td>\n A process in which aluminum billets are heated to a recrystallization temperature range (400-500 degrees Celsius) for extrusion. In this temperature range, aluminum has very good plasticity, increased fluidity, and is easy to form.<\/p>\n \n Cold Extrusion<\/b><\/td>\n A process in which aluminum billets are extruded without heating.<\/p>\n \n Warm Extrusion<\/b><\/td>\n A process in which aluminum billets are heated, but not to the crystallization temperature range for extrusion.<\/p>\n Direct Extrusion Process Vs. Indirect Extrusion Process<\/strong><\/h3>\n
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\n Indirect Extrusion (Backward Extrusion)<\/b><\/td>\n The extrusion billet remains stationary and the aluminum is extruded in the opposite direction of the ram movement.<\/p>\n \n Direct Extrusion (Foward Extrusion)<\/b><\/td>\n Aluminum billets are extruded through the die opening in the direction of the movement of the extrusion billet during extrusion. The majority of extruded aluminum is produced by direct extrusion. We will focus on this process to explain the specific steps.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n