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A kind of composite rebar and preparation method thereof

A technology of rebar and steel core, applied in the direction of coating, melting spray coating, building components, etc., can solve the problem of general anti-corrosion effect, etc., and achieve the effect of improving the anti-corrosion effect and saving costs.

Active Publication Date: 2021-08-24
广州广钢新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention improves the anti-corrosion performance of steel by compounding a layer of stainless steel surface on ordinary steel, but the composite surface is ordinary threaded steel, and the anti-corrosion effect is general

Method used

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  • A kind of composite rebar and preparation method thereof

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Embodiment 1

[0031] A composite threaded steel and a preparation method thereof, comprising a steel core and an alloy layer, the alloy layer wraps the steel core, the steel core is metallurgically combined with the alloy layer, and the thickness of the alloy layer is 3mm. The steel core is low carbon steel. 950 parts by mass of the pig iron, 0.9 parts by mass of the carbon powder, 4 parts by mass of the zinc ingot, 0.3 parts by mass of the copper ingot, 0.4 parts by mass of the ferrophosphorus, 1 part by mass of the ferromanganese alloy share. To prepare the master alloy, take 85 parts by mass of zinc ingot and 4 parts by mass of metal calcium, and eutectically melt under the protection of argon. When the temperature reaches 680°C, blow in argon and stir. The pressure of argon is 0.03MPa, and the temperature drops to 540°C. , to obtain an intermediate alloy solution; to prepare a modified solution, take 72 parts by mass of aluminum ingot, 3 parts by mass of silicon, and 0.08 part by mass ...

Embodiment 2

[0042] Embodiment 2 is different from Embodiment 1 in that the thickness of the alloy layer is 1mm, and the manufacturing method of the alloy layer is as follows: sequentially comprising electric furnace smelting, refining outside the furnace, continuous casting process, and the electric furnace smelting process In the process, pig iron, zinc ingots, and copper ingots are eutectically stirred, and ferrosilicon and ferromanganese alloys are added in the process of circuit smelting to out-of-furnace refining, and ferrophosphorus is added in the out-of-furnace refining process. The pig iron is 900 parts by mass, and the 0.3 parts by mass of carbon powder, 3 parts by mass of the zinc ingot, 0.1 part by mass of the copper ingot, 0.3 parts by mass of the described ferrophosphorus, and 0.9 parts by mass of the ferromanganese alloy.

Embodiment 3

[0044] Embodiment 3 is different from Embodiment 1 in that the manufacturing method of the alloy layer is as follows: successively include electric furnace smelting, out-of-furnace refining, and continuous casting processes. In the electric furnace smelting process, pig iron, zinc ingots, copper Ingot eutectic stirring, adding ferrosilicon and ferromanganese alloy in the process from circuit smelting to out-of-furnace refining, adding ferrophosphorus in the out-of-furnace refining process, 1000 parts by mass of pig iron, 1.2 parts by mass of carbon powder, and 5 parts by mass of the zinc ingot, 0.4 part by mass of the copper ingot, 0.5 part by mass of the ferrophosphorus, and 1.3 parts by mass of the ferromanganese alloy.

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Abstract

The invention relates to the field of iron and steel smelting, and provides a composite threaded steel and a preparation method thereof, which are used to solve the corrosion problem of the threaded steel. A composite threaded steel and a preparation method thereof provided by the present invention include a steel core and an alloy layer, the alloy layer wraps the steel core, the steel core is metallurgically combined with the alloy layer, and the thickness of the alloy layer is 1~ 3mm. A layer of alloy layer is placed on the surface of the steel core. The alloy layer can effectively protect the steel core from corrosion. The steel core and the alloy layer are metallurgically bonded to make the connection firm.

Description

technical field [0001] The invention relates to the field of iron and steel smelting, in particular to a composite threaded steel and a preparation method thereof. Background technique [0002] The production cost of stainless steel continues to increase with the consumption of precious metal nickel. Therefore, it is an urgent goal to seek materials that not only have the corrosion resistance of stainless steel bars, but also have low cost and higher strength than stainless steel bars. Low-carbon steel and low-alloy steel have low cost and high strength, and stainless steel has excellent corrosion resistance. Composite low-carbon steel or low-alloy steel and corrosion-resistant alloys are used to prepare composite steel, which is helpful for improving the quality of construction projects and extending the construction structure. service life is of great significance. [0003] CN107023119A discloses a stainless steel composite corrosion-resistant ribbed steel bar and its man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/03C22C33/06C23C4/134C23C4/06
CPCC22C33/006C22C33/06C23C4/06C23C4/134E04C5/03
Inventor 王辉
Owner 广州广钢新材料股份有限公司