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A kind of core filling tube and preparation method thereof

A core-filling tube and core-filling technology, which is applied in the field of core-filling tubes and their preparation, can solve the problems of difficulty in injecting long-sized steel tubes and low efficiency, and achieve the effects of energy saving, low price, and high stability

Active Publication Date: 2019-02-05
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the concrete filled steel tube structure has not undergone pressure processing after filling the concrete, the concrete cannot be fully compacted in the steel tube, and the smaller the size of the steel tube, the lower the efficiency of injecting concrete into the steel tube
When the diameter is less than 50mm, it is very difficult to efficiently inject concrete into long-sized steel pipes

Method used

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  • A kind of core filling tube and preparation method thereof
  • A kind of core filling tube and preparation method thereof
  • A kind of core filling tube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A core-filled coiled wire, which is composed of an outer layer metal material and an inner layer core material; the outer layer metal material is Q235 low-carbon steel; the inner layer core material is a mixture of filler and hardener; wherein, by mass ratio , filler: hardening agent=96:4, the filler is silicon dioxide with a particle size of 100-8000 microns; the hardening agent is a tile adhesive; Q235 low-carbon steel, the chemical composition is 0.076%C by weight percentage, 0.257%Si , 0.326% Mn, 0.057% P, 0.007% S, 0.004% A1, the balance is Fe, the steel has a yield strength of 235MPa, a tensile strength of 380MPa, and an elongation of 35%.

[0059] The diameter of the cored wire coil is 6mm, the diameter of the cored material is 4mm, and the wall thickness of Q235 low carbon steel is 1mm;

[0060] Tile adhesive is added as an additive for bonding and strengthening.

[0061] The above-mentioned preparation method of the core-filled coil adopts the schematic diagra...

Embodiment 2

[0075] A core-filled pipe material is composed of an outer layer metal material and an inner layer core material; the outer metal material is 304 stainless steel; the inner layer core material is a mixture of filler and hardener; wherein, according to the mass ratio, the filler: Hardener=97:3, the filler is slag powder with a particle size of 100-8000 microns; the hardener is water glass, 304 stainless steel, and the chemical composition is 0.072%C, 0.5%Si, 1%Mn, 18%Cr by weight percentage , 9% Ni, 0.02% S, 0.03% P, 0.05% N, the balance is Fe, the steel has a yield strength of 205MPa, a tensile strength of 520MPa, and an elongation of 45%;

[0076] The outer diameter of the cored pipe is 60 mm, and the diameter of the cored material is 58.4 mm.

[0077] The above-mentioned preparation method of the core-filled pipe, the schematic diagram of the core-filled pipe production device used is as follows figure 2 As shown, it specifically includes the following steps:

[0078] Ste...

Embodiment 3

[0091] A kind of core rod material is composed of outer layer metal material and inner layer core material; the outer layer metal material is TB2 titanium alloy; the inner layer core material is a mixture of filler and hardener; wherein, by mass ratio, Filler: hardener = 95:5, the filler is a mixture of sandstone and iron slag powder with a particle size of 100 to 8000 microns; the hardener is vinyl triamine; the outer diameter of the core rod is 15 mm, and the core material 12.6mm in diameter.

[0092] The above-mentioned preparation method of the cored rod, the schematic diagram of the used cored pipe production device is as follows figure 2 As shown, it specifically includes the following steps:

[0093] Step 1: Select raw materials:

[0094] According to the composition of the core rod, select TB2 titanium alloy, vinyl triamine, sandstone and iron slag powder with a particle size of 100-8000 microns;

[0095] Step 2: Mix the filler material well:

[0096] Use a mixer to...

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Abstract

The invention discloses a core filling steel pipe and belongs to the field of metal drawing product developments. The core filling steel pipe is composed of an outer-layer metal material and an inner-layer core filling material in a compounding manner. The outer-layer metal material is one of stainless steel, titanium, a titanium alloy, aluminum or copper, and the inner-layer core filling material is a mixture of padding and a hardening agent. The hardening agent is organic matter containing epoxy resin and / or amido. A preparing method includes the steps that firstly, raw materials are selected; secondly, the core filling material is evenly mixed; thirdly, the core filling material is added in the strip rolling forming process, and a core filling blank pipe is obtained; fourthly, welding and burr removing are conducted on the core filling blank pipe, and a billet pipe with the core filling material is obtained; and fifthly, reducing and sizing drawing is conducted, and a finished product is obtained. According to the core filling steel pipe and the preparing method, a hardening agent is mixed in the core filling material to ensure the forming strength of the core filling steel pipe, and energy consumption of high-temperature annealing is saved; high-speed continuous drawing can be achieved, the structure is simple, and stability is high; due to control over drawing parameters, the needed core filling steel pipe is prepared; and in addition, the cost of the core filling material is low, meanwhile, the use amount of steel is reduced, and the functions of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention belongs to the field of development of metal drawing products, in particular to a core-filling tube and a preparation method thereof. Background technique [0002] Filling another material inside the pipe can improve the load-bearing capacity as a structural pipe. The concrete-filled steel tube structure is prepared according to this concept. After the steel pipe is filled with concrete, the steel pipe and the concrete bear the external load together, which has higher bearing capacity (compression resistance, bending resistance) and internal corrosion resistance than the empty pipe, and can reduce the amount of steel. Good economic benefits. Since the concrete filled steel tube structure has not undergone pressure processing after filling the concrete, the concrete cannot be fully compacted in the steel tube, and the smaller the size of the steel tube, the lower the efficiency of injecting concrete into the steel tube. When the diamete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/10B21C37/12B21C37/30
CPCB21C37/10B21C37/107B21C37/121B21C37/127B21C37/30
Inventor 刘相华高海涛张世龙祁俊龙
Owner NORTHEASTERN UNIV LIAONING