Views: 4 Author: Site Editor Publish Time: 2021-04-14 Origin: Site
Profile pipe: It is an object with a certain geometric shape made by rolling, extrusion, casting and other processes of iron or steel and materials with certain strength and toughness (such as plastic, aluminum, glass fiber, etc.), and its uniform length is 6m . Profile pipes refer to materials manufactured in accordance with certain standards and using man-made materials for standardized and large-scale production. The profile pipe has a certain appearance size, a certain shape in section, and certain mechanical and physical properties. Profile pipes can be used alone or further processed into other manufactured products, often used in building structures, manufacturing and installation.So what is the extrusion principle of the profile pipe?
Principles of extrusion of Profiles Pipe.
The profile pipe provided by the company.
Aluminum profile pipe extrusion is a plastic processing method that applies external force to a metal blank placed in a container (extrusion cylinder) to make it flow out of a specific die hole to obtain the desired cross-sectional shape and size.
Composition of extruder
The aluminum extrusion press consists of a machine base, a front column frame, a tension column, an extrusion cylinder and a hydraulic system controlled by hydraulic pressure.
Classification of extrusion methods
According to the type of metal in the aluminum extrusion cylinder, the state of stress and strain, the extrusion direction of the aluminum profile pipe, the lubrication state, the extrusion temperature, the extrusion speed, the type or structure of the mold, the number of shapes or shape blanks, and the shape of the product Or quantity can be divided into forward extrusion method, reverse extrusion method (including plane deformation extrusion, axisymmetric deformation extrusion, general three-dimensional deformation extrusion) transverse extrusion method, glass lubrication extrusion method, hydrostatic extrusion Out method, continuous extrusion method, etc.
Positive thermal deformation extrusion
Most thermal deformation aluminum production companies use the positive thermal deformation extrusion method to obtain aluminum profile pipes with the desired cross-sectional shape through specific molds (flat molds, conical molds, and split molds).
The forward extrusion process is simple, the equipment requirements are not high, the metal deformability is high, the production range is wide, the aluminum performance is controllable, the production flexibility is large, and the mold is easy to maintain and modify.
The defect is the strong friction between the inner surface of the extrusion cylinder and the aluminum material, which accounts for a large proportion of the energy consumption of extrusion. Friction can easily cause the ingot in the cylinder to heat up and increase the instability of the profile pipe, impair the efficiency of the finished product, and limit aluminum and aluminum. The extrusion speed of the alloy accelerates the wear and service life of the alloy.
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