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aluminium extrusion plant process

aluminium extrusion plant process

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aluminium extrusion plant process

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    1. Aluminium Extrusion Plant Process

    2. ALUMINUM A silver-white soft metal, noted for its lightness, high reflectivity, high thermal conductivity, nontoxicity, and corrosion resistance. It is the most abundant metallic element, comprising about 1/12th of the earth's crust. It is never found in nature as an elemental metal, but only in combination with oxygen and other elements. In ordinary commercial and industrial use, the word aluminum is often understood to mean aluminum alloy, rather than the pure metal.

    3. EXTRUSION Extrusion is a manufacturing process used to create long objects of a fixed cross-sectional profile. A material, often in the form of a billet, is pushed and/or drawn through a die of the desired profile shape. Hollow sections are usually extruded by placing a pin or piercing mandrel inside of the die, and in some cases positive pressure is applied to the internal cavities through the pin. Extrusion may be continuous (producing indefinitely long material) or semi-continuous (producing many short pieces). Some materials are hot drawn whilst others may be cold drawn.

    4. ALUMINIUM EXTRUSION Aluminium extrusions are made from solid aluminium cylinders called billets, which are continuously cast from molten aluminium. Billets are available in a wide variety of alloys, pretreatments and dimensions, depending upon the requirements of the manufacturer. The extrusion process involves Aluminium metal being forced through a die with a shaped opening. This is made possible by preheating the billet to 450-500C and then applying a pressure of between 500 and 700 MPa (equivalent to the pressure found at the bottom of a 60km high water tank). The heated and softened metal is forced against the container walls and the die by a hydraulic ram, the only exit is the geometric cross-section of the die opening, and the metal is squeezed out. The extrusion leaves the die at a temperature of around 500C and the exit temperature is carefully controlled in order to achieve specified mechanical properties, a high quality surface finish and good productivity. Aluminium extrusions are made from solid aluminium cylinders called billets, which are continuously cast from molten aluminium. Billets are available in a wide variety of alloys, pretreatments and dimensions, depending upon the requirements of the manufacturer. The extrusion process involves Aluminium metal being forced through a die with a shaped opening. This is made possible by preheating the billet to 450-500C and then applying a pressure of between 500 and 700 MPa (equivalent to the pressure found at the bottom of a 60km high water tank). The heated and softened metal is forced against the container walls and the die by a hydraulic ram, the only exit is the geometric cross-section of the die opening, and the metal is squeezed out. The extrusion leaves the die at a temperature of around 500C and the exit temperature is carefully controlled in order to achieve specified mechanical properties, a high quality surface finish and good productivity. Aluminium extrusions are made from solid aluminium cylinders called billets, which are continuously cast from molten aluminium. Billets are available in a wide variety of alloys, pretreatments and dimensions, depending upon the requirements of the manufacturer. The extrusion process involves Aluminium metal being forced through a die with a shaped opening. This is made possible by preheating the billet to 450-500C and then applying a pressure of between 500 and 700 MPa (equivalent to the pressure found at the bottom of a 60km high water tank). The heated and softened metal is forced against the container walls and the die by a hydraulic ram, the only exit is the geometric cross-section of the die opening, and the metal is squeezed out. The extrusion leaves the die at a temperature of around 500C and the exit temperature is carefully controlled in order to achieve specified mechanical properties, a high quality surface finish and good productivity.

    5. INGOT A cast form suitable for subsequent working by such methods as rolling, forging, extruding, etc

    6. Ingot -A method of producing blooms, billets and slabs in long lengths using water cooled moulds. The castings are continuously withdrawn through the bottom of the caster whilst the teeming of the metal is proceeding. The need for primary and intermediate mills and the storage and use of large numbers of ingot moulds is eliminated. The continuous casting process is also used in the production of cast iron, Aluminium and copper alloys.

    7. ALUMINIUM LOG The starting stock for extrusion billet. Extrusion log is usually produced in lengths from which shorter extrusion billets are cut.

    9. BILLETS May be solid or hollow in form, commonly cylindrical, used as the final length of material charged into the extrusion press cylinder. It is usually a cast product, but may be a wrought product or sintered from powder compact

    10. Billet is a term used in manufacturing to refer to a cast product. A cast product is defined as either as ingot or a billet, depending on whether the cross-sectional diameter is greater than, or less than approximately 200 mm, respectively. A billet is typically cast to a geometry compatible with secondary processing, e.g. forging. An ingot is typically cast to a convenient geometry for further primary processing, e.g. heat treatment Ingots and billets are collectively known as bar stock.

    11. HOMOGENIZING Is a process whereby ingots are raised to temperatures near the solidus temperature and held at that temperature for varying lengths of time. The purposes of this process are to reduce micro segregation by promoting diffusion of solute atoms within the grains of aluminum and Improve workability

    12. LOG CASTING BILLET HEATING In 750C temperature in 440C to 520C temperature

    13. ALUMINIUM HOMOGENIZING FURNACES

    14. A DIE In extrusion a tool with an opening through which heated aluminum is forced by pressure, taking on that cross-sectional shape. HOLLOW DIE SOLID DIE

    15. The term DIE is most commonly used in tooling, i.e. press tools "punch and die" but there are many other types of die, e.g. thread cutting dies, forming dies, forging dies, die-casting dies, etc. The term when applied to steel often refers to drawing dies through which hot rolled wire and bar are drawn to produce the finish and dimensional accuracy that is required for bright steel.

    16. THE PRESS The press supplies the force necessary to squeeze the billet through the extrusion die. It consists of The container where the billet is put under pressure. The main cylinder with the ram for pushing the billet into the container and through the die. The front platen giving counter support to the die package. The main columns fixing the front platen and the cylinder together. The die is supported by a series of back dies or backers and bolsters for transferring the main press load to the front platen.

    18. STRETCHING In extrusion a tool with an opening through which heated aluminum is forced by pressure, taking on that cross-sectional shape. Its depends on the length but approximately stretching on a length is 2% to 5%.

    19. AGEING Precipitation from solid solution resulting in a change in properties of an alloy, usually occurring slowly at room temperature (natural aging) and more rapidly at elevated temperatures (artificial aging). Minimum 6 hours in 180C temperature

    20. EXTRUDED ALUMINIUM

    21. ALUMINIUM PROPERTIES

    24. APPLICATIONS Aluminium extrusions are used throughout the construction industry, particularly in window and door Framesystems, prefabricated houses/building structures, roofing and exterior cladding and curtain walling. Extrusions are also used in road and rail vehicles, airframes and marine applications.

    26. MOST USEABLE MATERIAL 6063 (He9) 6101 6351 6060 6082 6061 (He20) 1050 (Ec)

    27. 6063 Aluminium alloy 6063 is a medium strength alloy commonly referred to as an architectural alloy. It is normally used in intricate extrusions. It has a good surface finish, high corrosion resistance, is readily suited to welding and can be easily anodized. Most commonly available as T6 temper, in the T4 condition it has good formability.

    35. PRESENTED BY:

    36. JAI SHIV ALUMINIUM PVT. LTD. Formerly Known As JSK ALUMINIUM PVT. LTD H.O. : 185 INDUSTRIAL AREA , PHASE-1 CHANDIGARH. Phone- +91-172-4660185 Fax- +91-172-4660184 Visit us at:-www.jaisco.com E-mail- info@jaisco.comm Works:- Vill. Kuranwala, Barwala Road, Derabassi. Distt. SAS Nagar Mohali Punjab. Tele/Fax. :- +91-1762-280227

    37. Thank you