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Main extrusion operations

Hot extrusion of tubes from solid billets (sometimes the term "direct extrusion" is also used) is the main method of producing aluminium tubes of all diameters and wall thicknesses. The cross-section of the billet is reduced but the length is increased, and the direction of the metal flow coincides with the direction of travel of the forming tool.

Horizontal hydraulic presses

The working area of the extruding operation includes:

• A container where a solid cylindrical workpiece is placed:
• A die through which the extrusion is performed;
• A mandrel, which is positioned freely in the die and produces an annular gap in the blank;
• The press stud, which performs the extrusion of the semi-finished product through the matrix;
• The press washer, which performs the pressure on the end face of the deformed billet;
• A roller conveyor, through which the billet continuously enters the extruding zone;

In-line hot extrusion line may also include hot shears for cutting pipes to size. During the plastic deformation process the semi-finished product is intensively cooled by cooling lubricants. The lubricant performs two functions - it separates the rubbing surfaces of the metal and the tool, and reduces the specific loads during extrusion. Supplier Evek GmbH offers to buy a wide range of aluminum tubes at an affordable price. We provide product delivery anywhere in the continent. The price is optimal.

Equipment for hot aluminum extrusion

Hydraulic presses extruding aluminum, refer to bar and profile piercing presses. Industrial oil is used as the operating fluid. The presses are equipped with a modern filter system that effectively removes impurities from the working fluid. At the same time, the pressure in the working cylinder system is maintained at a level sufficient to overcome the resistance to the deformation of the material of the original workpiece.

Working temperatures

For pipes made of AB, AD33, AD31 alloys - 250 ... 400°C on matrix and washer, and 360 ... 510°C on the billet; For tubes from alloys Д16 - 300 ... 350 °С on a matrix and washers, and 250 ... 320 °С - on a blank.

Piercing

Press piercing system does not depend on the main press system, which provides the equipment with extended technological capabilities. The press also includes auxiliary and conveying equipment that take the heated ingot from the furnace to the die punch, separation of the rest from the main tubular billet, and units for work tool change.

Buy. Supplier, price.

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