Threaded steel and preparation method thereof

A technology of threaded steel and mass parts, applied in the field of iron and steel smelting, to achieve the effect of increasing hardness, improving strength, and increasing strength

Inactive Publication Date: 2018-11-23
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

However, there are also some problems that cannot be ignored in large-scale construction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A threaded steel and a preparation method thereof, comprising 950-1000 parts by mass of the pig iron, 3-4 parts by mass of the copper ingot, 0.6-0.8 parts by mass of the vanadium ingot, and 3-5 parts by mass of the ferrosilicon parts, 40 to 45 parts by mass of the ferromanganese alloy, and 15 to 25 parts by mass of the ferrophosphorus. The vanadium ingot is a modified vanadium ingot. The modification method of the modified vanadium ingot is as follows: prepare a matrix, take 80 parts by mass of vanadium pentoxide, 4 parts by mass of aluminum oxide, 50 parts by mass of deionized water, and 6 parts by mass of sodium chloride. Press molding, dry and sinter at high temperature to form a cathode block; use graphite block as anode, sodium chloride molten salt as electrolyte, and cathode block as cathode for molten salt electrolysis; after electrolysis is completed, lift the cathode block from the molten salt and clean it , drying to obtain the matrix; get 3 parts by mass of ...

Embodiment 2

[0033] The difference between embodiment 2 and embodiment 1 is that it includes electric furnace smelting, refining outside the furnace, continuous casting, hot rolling, cooling, cutting and flat head in sequence. In the electric furnace smelting process, pig iron, copper ingots and vanadium ingots are Eutectic stirring, adding ferrosilicon and ferromanganese alloy in the process of electric furnace smelting to out-of-furnace refining, adding ferrophosphorus in the out-of-furnace refining process, said 900 parts by mass of pig iron, 2 parts by mass of said copper ingot, said 0.4 parts by mass of vanadium ingot, 2.5 parts by mass of said ferrosilicon, 35 parts by mass of said ferromanganese alloy, and 10 parts by mass of said ferrophosphorus.

Embodiment 3

[0035] The difference between embodiment 3 and embodiment 1 is that it includes electric furnace smelting, out-of-furnace refining, continuous casting, hot rolling, cooling, cutting and flat head in sequence. In the electric furnace smelting process, pig iron, copper ingots and vanadium ingots are Eutectic stirring, adding ferrosilicon and ferromanganese alloys in the process of electric furnace smelting to out-of-furnace refining, adding ferrophosphorus in the out-of-furnace refining process, said 1000 parts by mass of pig iron, 4 parts by mass of said copper ingot, said 0.8 parts by mass of vanadium ingot, 5 parts by mass of said ferrosilicon, 45 parts by mass of said ferromanganese alloy, and 25 parts by mass of said ferrophosphorus.

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PUM

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Abstract

The invention relates to the field of iron and steel smelting, and provides threaded steel and a preparation method thereof. The preparation method is used for improving the intensity of the threadedsteel. The preparation method of the threaded steel provided by the invention sequentially comprises the working procedures of electric furnace smelting, external refining, continuous casting, hot rolling, cooling, cutting and end flattening, wherein in the electric furnace smelting working procedure, cast iron, copper ingots and vanadium ingots are subjected to eutectic melting stirring; in the process from electric furnace smelting to external refining, silicon iron and ferromanganese iron alloy are added; ferro phosphorus is added into the working procedure of external refining; the cast iron accounts for 900 to 1000 mass parts; the copper ingots account for 2 to 4 mass parts; the vanadium ingots account for 0.4 to 0.8 mass parts; the silicon iron accounts for 2.5 to 5 mass parts; the ferromanganese iron alloy accounts for 35 to 45 mass parts; the ferro phosphorus accounts for 10 to 25 mass parts. C, Mn, V, Cu and Fe are compounded to be prepared into alloy; the intensity of the threaded streel can be effectively improved; meanwhile, the toughness of the threaded steel cannot be influenced.

Description

technical field [0001] The invention relates to the field of iron and steel smelting, in particular to a threaded steel and a preparation method thereof. Background technique [0002] Rebar is an important building material, which is widely used in the construction of houses, bridges, roads and other civil engineering. my country is a big producer of rebar, with an output of 131 million tons in 2010, accounting for more than 70% of the global output. At present, our country is at the peak of modernization construction, housing and infrastructure construction is booming, which strongly supports the pace of social modernization. However, there are also some problems that cannot be ignored in large-scale construction. In order to improve the life of buildings and reduce the waste of resources, we must start from many aspects, and improving the strength of building materials is an important part of it. [0003] When the rebar is subjected to external impact, the toughness and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C38/04C22C38/12C22C38/16C22C38/02C21D1/18C22C35/00C25C3/36
CPCC21D1/18C22C33/006C22C33/06C22C35/00C22C38/002C22C38/02C22C38/04C22C38/12C22C38/16C25C3/36
Inventor 周广武
Owner 广州广钢新材料股份有限公司
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