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Titanium-aluminum core-spun yarn and application thereof, titanium alloying molten steel and preparation method thereof, and titanium-containing alloy steel

A technology for titanium alloy steel and cored wire is applied in the fields of titanium aluminum cored wire and its application, titanium alloyed molten steel and its preparation, and titanium-containing alloy steel, and can solve the problems of little research on titanium cored wire, etc. Achieve high yield strength and tensile strength, stable recovery rate, and high recovery rate

Active Publication Date: 2014-07-16
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] It can be seen that the core material of the cored wire studied in the prior art is mainly calcium, niobium, vanadium, boron and other elements, but there is little research on the cored wire containing titanium

Method used

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  • Titanium-aluminum core-spun yarn and application thereof, titanium alloying molten steel and preparation method thereof, and titanium-containing alloy steel

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Embodiment approach

[0035] According to a preferred embodiment of the present invention, the aluminum skin is made of grade 1050A aluminum (the Al content is 98.5% by weight, the balance is Si<0.25% by weight, Fe<0.45% by weight, etc.).

[0036] According to the cored wire of the present invention, preferably, the thickness of the aluminum skin is 0.8-1.5mm. The aforementioned cored wire is used to carry out titanium alloying of molten steel, the titanium recovery rate is high and stable, and the yield strength and tensile strength of titanium alloy steel obtained after casting the obtained titanium alloyed molten steel are high.

[0037] According to the cored wire of the present invention, preferably, the diameter of the cored wire is 12-20 mm. The aforementioned cored wire is used to carry out titanium alloying of molten steel, the titanium recovery rate is high and stable, and the yield strength and tensile strength of titanium alloy steel obtained after casting the obtained titanium alloyed ...

Embodiment 1

[0055] A cored wire A1 (outer diameter 12 mm), including a core layer and an aluminum sheath wrapping the core layer, the core layer is ferrotitanium powder (brand FeTi70, particle size ≤ 1.5 mm, containing 67% by weight of Ti, <0.5 % by weight of C, <0.05% by weight of S, the balance is Fe), the aluminum skin is made of 1050A aluminum (Al content is 98.5% by weight, the balance is Si<0.25% by weight, Fe<0.45% by weight, etc.) (thickness 0.8mm), the weight ratio of the ferrotitanium powder to the aluminum skin is 5:1.

Embodiment 2

[0057] A cored wire A2 (with an outer diameter of 12 mm), comprising a core layer and an aluminum sheath wrapping the core layer, the core layer being ferrotitanium powder (brand FeTi60, particle size ≤ 1.5 mm, containing 58% by weight of Ti, <0.5 % by weight of C, <0.05% by weight of S, the balance is Fe), the aluminum skin is made of 1050A aluminum (Al content is 98.5% by weight, the balance is Si<0.25% by weight, Fe<0.45% by weight, etc.) (thickness 1mm), the weight ratio of titanium iron powder and aluminum skin is 8:1.

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Abstract

The invention provides a titanium-aluminum core-spun yarn which comprises a core layer and an aluminum sheath wrapped outside the core layer, wherein the core layer is titanium-iron powder. The invention provides application of the titanium-aluminum core-spun yarn in preparing titanium alloying molten steel. The invention provides a preparation method of the titanium alloying molten steel, which comprises the following steps: feeding the titanium-aluminum core-spun yarn into molten steel to be subjected to titanium alloying, and carrying out titanium alloying. The invention provides a titanium alloying molten steel prepared by the method. The invention provides a titanium-containing alloy steel which is prepared by casting the titanium alloying molten steel. In the preferable embodiment, the core-spun yarn is used for implementing titanium alloying of molten steel, and the titanium recovery rate is high and stable (80-85%), thereby effectively enhancing the quality of the molten steel.

Description

technical field [0001] The invention relates to a titanium-aluminum cored wire and its application in molten steel titanium alloying, a titanium alloyed molten steel and a preparation method thereof, and a titanium-containing alloy steel. Background technique [0002] In order to ensure the various physical and chemical properties of steel, it is necessary to add alloy additives to the steel to adjust its composition to the specified range. Elements (C, Si, Mn, S or P) that are not present in ordinary steel or have a small content are all alloying elements. Alloy additives can be pure materials (nickel, copper, aluminum, graphite powder, etc.), ferroalloys (ferromanganese, ferrosilicon, ferrovanadium, ferrotitanium, etc.), or compounds of alloying elements (oxides, carbides, etc.) substances, nitrides, etc.). [0003] Ni, Mo, Cu, Co and other elements have low affinity with oxygen, so they can be added together with the charge or during the smelting process; while Ti, V, C...

Claims

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Application Information

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IPC IPC(8): C21C7/00C22C33/04
Inventor 陈炼王建戈文荪常军徐权李龙曾建华蒋龙奎张开华
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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