In the choice of extrusion method, according to the profile shape, the structure of the extruder, the number of residual material and residual material with the product separation method, the use of extrusion capacity of the cylinder, profile quality requirements (poor wall thickness, the quality of the internal surface and the macro organization ), Stress conditions and metal flow rate and other indicators, to make a comprehensive trade-off, the selection of the best method of extrusion. Production of porous profiles, the hole diameter of the profile is very small; the distribution of the internal position of the hole is very asymmetric profile and the shape of the hole complex profiles, not punctured needle method. Production does not allow the internal profile of the weld profiled profile and poor welding performance of alloys such as duralumin, magnesium% 26mdash; aluminum alloy, brass, bronze, copper, titanium, zirconium, steel and other hollow profiles can not be used Co-extrusion method

The production of profiles by extrusion process. Extruded profiles divided into two types of hollow profiles and solid profiles. Hollow profile refers to the cross-section of one or more closed through-hole profiles. Extruded profiles of the species and specifications have more than 30,000 species, especially aluminum up to more than 2.4 million species. Followed by copper profiles, magnesium profiles and profiles and plastic profiles. Solid extruded profiles account for about 65% of all extruded profile specifications, while profiled profiles represent the bulk of solid profiles, followed by hollow extruded profiles such as aluminum doors and windows, plastic doors and windows. Extruded profiles have higher strength than other methods such as rolling and die forging. Extrusion tool replacement is relatively simple, small batch production. The use of extrusion method for the production of complex shapes, especially those with widely varying sections, can greatly reduce the amount of machining, reduce metal loss and improve the performance of parts and structures. 

Squeeze the use of more positive-shaped profile extrusion, reverse extrusion and joint extrusion. Joint extrusion method currently used up little. Hollow profile extrusion can be based on the shape of the hollow profile, the number of holes (in the single-hole extrusion is the cross-section of the hole shape and size), the profile of the hole section of the asymmetric distribution of the center position and other factors, And welding extrusion method (see composite die extrusion). The former uses a hollow billet or solid billet forward or reverse extrusion; the latter is suitable for the welding of metals and alloys with good forward extrusion, especially when extruded aluminum building profiles obtained Wide range of applications. 

The company is engaged in cold-formed sections for many years enterprises. Order cold-formed profiles please Xiaofeng building materials factory!