High-strength aluminum alloy pre-burie channel and molding process thereof

Abstract

The invention discloses a high-strength aluminum alloy pre-buried channel and a molding process thereof, comprising a pre-buried channel body, wherein the pre-buried channel body is composed of a C-shaped groove and an anchor rod fixedly connected to the back surface of the C-shaped groove bottom; The anchor rod and the C-shaped groove are an integral structure of extrusion forming, the notch of the C-shaped groove is two inner flanging structures symmetrical to the middle line of the C-shaped groove, and the opposite sides of the two inner flanging edges are rack structures. As that high-strength aluminum alloy material is adopt for the pre-buried channel through the extrusion die to be extruded into the pre-buried channel body profile, the strength and load capacity of the pre-buried channel are greatly improved, the consumption of materials is less than that of the prior pre-buried channel unde the same load, and the manufacturing cost is lower than that of the prior pre-buried channel. The meshing teeth engaged with the T-shaped bolt are arranged on opposite sides of the two inner flanges of the C-shaped notch, so that the tooth area is large, the tooth profile is clear, the load level of the tooth force-bearing part is high, and the anti-sliding ability of the tooth is greatly improved.

Description

Technical field [0001] The invention relates to the field of comprehensive pipeline support in the electromechanical installation industry, in particular to a high-strength aluminum alloy pre-buried channel and its forming process. Background technique [0002] In infrastructure projects, more and more embedded channel technology is adopted, that is, embedded channels are implanted before the on-site pouring and prefabricated reinforced concrete, and they are matched with T-bolts on any inclined surface and arc surface instead of expansion Bolts to fix suspended pipelines and other products. [0003] The existing embedded channel is a hot-rolled steel toothed C-shaped channel, such as Figure 7-9 As shown, the C-shaped channel body 1.1 and the anchor rod 1.2 on the back are processed separately, and multiple anchor rods 1.2 are connected to the channel body 1.1 by riveting or welding. Due to the local stress concentration at the welding part, the welding part of the C-shaped channe...

AI Technical Summary

Problems solved by technology

Due to the local stress concentration at the welding part, the welding part of the C-shaped channel body 1.1 is deformed, and the concrete will leak into the inner side of the C-shaped channel during pre-embedding, which will affect the pre-embedded effect

Cold pressure riveting means that the end of the anchor rod 1.2 is plastically deformed by applying pressure to form a large local raised step, which affects the appearance of the product. The contact area between the anchor rod 1.2 and the channel body 1.1 is small, and the thickness around the inner riveting head is not large. Uniform, anchor 1.2 fixed unstable

[0004] like Figure 11.1 , 11.2 As shown, the C-shaped channel body 1.1 is generally processed by Q235 hot-rolled steel 1.3. The forming process is to first carry out tooth-shaped rolling on the two sides of the hot-rolled steel strip 1.3 through the rolling gear 1.4, and then roll it into a C-shaped channel body 1.1; as Figure 7 , Figure 8 As shown, the meshing teeth 1.5 of the C-shaped channel body 1.1 and the T-bolts are located inside the C-shaped groove of the C-shaped channel body 1.1, which is inconvenient for tooth detection; The regularity makes the meshing teeth 1.5 out of the rolling shape irregular, the width and depth are small, and the outline of the teeth is not clear, especially after hot-dip galvanizing. Figure 10 The corner deposition 1.6 phenomenon shown affects the normal meshing, and the anti-slip ability of the teeth is low. During the engineering installation or normal operation, the teeth are overloaded and slipped, resulting in collapse accidents.

[0005] In terms of surface anti-corrosion treatment, the existing C-shaped channel body 1.1 is generally processed by Q235 hot-rolled steel strip 1.3. Carbon steel material itself does not have anti-corrosion function, and its anti-corrosion function depends on the thickness and quality of the surface hot-dip galvanized layer , the hot-dip galvanizing process itself has many defects. Zinc nodules and zinc slag are left on the surface of the workpiece, and the surface of the galvanized layer is prone to fish-scale peeling, blistering, and white spots, which destroys the surface anti-corrosion layer and shortens its service life; at the same time, the The process environment is seriously polluted, and the waste lye, waste acid, harmful gas, etc. produced cause environmental pollution

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