Compound steel groove, embedded groove channel and embedded groove channel production method

A pre-embedded channel and composite steel technology, which is applied in the field of pre-embedded channels and pre-embedded channel production, composite steel channels, can solve the problems that the surface anti-corrosion technology cannot guarantee the service life, exceed the project budget, and cannot be widely used. , to achieve the effect of maintaining anti-corrosion performance, improving safety and reducing material cost

Pending Publication Date: 2020-06-09
罗显龙 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the design requirements of civil engineering, the service life of the embedded channel is usually required to be 100 years, but the existing metal components made of ordinary carbon steel and low alloy steel cannot guarantee the service life only through surface anti-corrosion technology, so there are potential safety hazards
Components made of stainless steel can reach the service life, but its cost is too high, often exceeding the project budget, so it cannot be widely used

Method used

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  • Compound steel groove, embedded groove channel and embedded groove channel production method
  • Compound steel groove, embedded groove channel and embedded groove channel production method
  • Compound steel groove, embedded groove channel and embedded groove channel production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] In this embodiment, the composite steel channel is a dovetail steel channel composited by stainless steel and carbon steel. The cross section of the composite steel channel is rectangular, with a width of 30mm and a height of 20mm. The metal of the surface layer is 316L stainless steel. The unilateral thickness of the 316L stainless steel layer is 0.3mm, accounting for 10% of the total thickness of the section (3mm), and the thickness of the 316L stainless steel layer at the outer surface of the groove leg hook is 0.3mm, accounting for 10% of the total thickness of the section (5.6mm). 5.4%, the thickness of the 316L stainless steel layer at the inner surface of the groove leg hook is 0.26mm, accounting for 4.6% of the total thickness of the section (5.6mm). The metal of the core is Q355 steel, and the thickness of the Q355 steel layer at the groove waist and groove leg is 2.4mm, accounting for 80% of the total thickness (3mm) of the section.

[0055] In this embodiment...

Embodiment 2

[0057] In this embodiment, the pre-buried channel includes a composite steel channel and a composite anchor rod. The surface layer metal of the composite steel channel is 304 stainless steel, the core metal is Q355 carbon steel, and the composite steel channel is a dovetail steel channel with a rectangular cross section. The width is 52mm, the height is 34mm, the length is 1000mm, and the bending radius is 6640mm.

[0058] The metal of the surface layer of the composite anchor is 304 stainless steel, the metal of the core of the anchor is Q355 carbon steel, the height is 125mm, the leg width is 40mm, and the length is 40mm.

[0059] Both ends of the composite steel channel and the composite anchor rod are coated with epoxy zinc-rich paint.

[0060] In this embodiment, since the entire outer surface of the pre-buried channel is covered by stainless steel layer and epoxy zinc-rich layer, it can achieve 2400 hours of neutral salt spray test without rust (equivalent to 100 years o...

Embodiment 3

[0062] In the present embodiment, the production process of the composite steel channel described in [Example 1] is as follows:

[0063] 1. Use a crane to place the core metal Q355B continuous casting billet with a thickness of 150mm x 150mm x 1200mm on the transport roller table, transport it to the brushing machine for four-sided brushing, remove the iron sheet, sundries and oil stains on the surface, and brush it The temperature is 20°C, and the polishing machine uses four polishing and milling pieces to simultaneously polish the cross-section.

[0064] 2. Send the continuous casting billet after throwing and brushing into the pressing device of the roll forming machine on-line with the roller table, and cross-cut, transfer and press the 6mm thick × 150mm wide × 1200mm long after the roll forming machine The surface layer metal 316L stainless steel plates are combined together along the diagonal direction of the continuous casting billet to make a combined billet.

[0065]...

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Abstract

The invention relates to a compound steel groove, an embedded groove channel and an embedded groove channel production method. The compound steel groove is compounded by a core part metal and a surface layer metal, wherein the surface layer metal and the core part metal are completely coated in the compound steel groove and are subjected to metallurgical bonding. The embedded groove channel comprises the compound steel groove, a compound anchor rod and an end surface nonmetal protection layer, wherein the compound anchor rod is a cylindrical anchor rod or an I-shaped anchor rod and is compounded by an anchor rod core part metal and an anchor rod surface layer metal; and the fracture surface of the compound steel groove and the fracture surface of the I-shaped anchor rod are provided with the end surface nonmetal protection layer. According to the invention, on a premise that the anti-corrosion service life period requirement of the embedded groove channel guarantees to be met, constructional engineering cost is lowered to a maximum extent, and building safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of profile production, in particular to a composite steel channel, a pre-embedded channel and a production method for the pre-embedded channel. Background technique [0002] The pre-embedded channel technology refers to the pre-embedding of steel channels on the concrete surface during the prefabrication of cement products such as segments, and fixing cables, pipelines, equipment, etc. Reduce damage to structures and save security time. The pre-buried channel technology was initially used in nuclear power projects, and later it was gradually used in building curtain walls, high-speed railway tunnels, bridges, municipal tunnels and power tunnels, rail transit and other fields. [0003] The embedded channel is composed of a C-shaped channel steel (also known as channel steel or steel channel) produced by hot rolling forming process and the anchor rod arranged on the back of the channel steel, GB / T37613-2019 "...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/41B32B15/01B32B1/00B23P15/00B32B37/06
CPCB23P15/00B32B1/00B32B15/011B32B15/013B32B37/06B32B2307/7145B32B2419/00E04B1/41
Inventor 罗显龙罗光政孙晓帆罗显贺赵玲赵本强刘哲赵妍
Owner 罗显龙
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