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A special coated film seamless solid core pure calcium wire for steelmaking deoxidation and its production method

A production method and technology of pure calcium wire, which are applied to the special coated seamless solid core pure calcium wire for steelmaking and deoxidation and its production field, can solve the problems of reduced calcium content of the core wire, easy oxidation of the surface of the calcium wire, and high cost of calcium treatment , to improve antioxidant, improve quality and use effect, and solve the effect of reducing calcium content

Active Publication Date: 2021-03-16
河北树航冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a coated seamless solid-core pure calcium wire special for steelmaking deoxidation and its production method, which solves the problem that the calcium wire surface is easily oxidized in the prior art, which reduces the calcium content in the core wire and the low calcium yield. , high cost of calcium treatment

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  • A special coated film seamless solid core pure calcium wire for steelmaking deoxidation and its production method
  • A special coated film seamless solid core pure calcium wire for steelmaking deoxidation and its production method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A seamless solid-core pure calcium wire coated for steelmaking deoxidation, including a calcium core layer, an anti-oxidation coating, and a seamless steel strip layer connected in sequence from the inside to the outside. The diameter of the calcium core layer is 12.3mm, and the anti-oxidation The thickness of the coating is 0.32mm, the thickness of the seamless steel strip layer is 1.35mm,

[0028] Wherein, the seamless steel strip layer adopts a cold-rolled steel strip, and the anti-oxidation coating consists of the following components by weight:

[0029] 10 parts of dopamine, 2.5 parts of polyimide, 3.2 parts of disodium hydrogen phosphate, 1.5 parts of glycerol, and 5.5 parts of trishydroxymethylaminomethane.

[0030] A method for producing a film-coated seamless solid-core pure calcium wire special for steelmaking deoxidation, comprising the following steps:

[0031] S1. After the metal calcium is heated and melted, it is vacuum cast into a metal calcium rod;

...

Embodiment 2

[0038] A coated seamless solid-core pure calcium wire specially used for steelmaking deoxidation, including a calcium core layer, an anti-oxidation coating, and a seamless steel strip layer sequentially connected from the inside to the outside. The diameter of the calcium core layer is 14.7mm, and the anti-oxidation The thickness of the coating is 0.45mm, the thickness of the seamless steel strip layer is 1.72mm,

[0039] Wherein, the seamless steel strip layer adopts a cold-rolled steel strip, and the anti-oxidation coating consists of the following components by weight:

[0040] 15 parts of dopamine, 5.9 parts of polyimide, 7.1 parts of disodium hydrogen phosphate, 3.6 parts of glycerol, and 8.3 parts of trishydroxymethylaminomethane.

[0041] A method for producing a film-coated seamless solid-core pure calcium wire special for steelmaking deoxidation, comprising the following steps:

[0042] S1. After the metal calcium is heated and melted, it is vacuum cast into a metal ...

Embodiment 3

[0049] A seamless solid-core pure calcium wire coated for steelmaking deoxidation, including a calcium core layer, an anti-oxidation coating, and a seamless steel strip layer connected in sequence from the inside to the outside. The diameter of the calcium core layer is 12.9mm, and the anti-oxidation The thickness of the coating is 0.37mm, the thickness of the seamless steel strip layer is 1.48mm,

[0050] Wherein, the seamless steel strip layer adopts a cold-rolled steel strip, and the anti-oxidation coating consists of the following components by weight:

[0051] 12 parts of dopamine, 3.7 parts of polyimide, 4.6 parts of disodium hydrogen phosphate, 2.2 parts of glycerol, and 6.2 parts of trishydroxymethylaminomethane.

[0052] A method for producing a film-coated seamless solid-core pure calcium wire special for steelmaking deoxidation, comprising the following steps:

[0053] S1. After the metal calcium is heated and melted, it is vacuum cast into a metal calcium rod;

[0...

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Abstract

The invention belongs to the technical field of molten steel refining and provides a coating seamless solid core pure calcium line special for steelmaking deoxygenation and a production method of theline. The coating seamless solid core pure calcium line special for steelmaking deoxygenation comprises a calcium core layer, an antioxidation coating and a seamless steel belt layer which are connected from inside to outside in sequence. The diameter of the calcium core layer is 12.3-14.7 millimeters, the thickness of the antioxidation coating is 0.32-0.45 millimeter, and the thickness of the seamless steel belt layer is 1.35-1.72 millimeters. The antioxidation coating is prepared from, by weight, 10-15 parts of dopamine, 2.5-5.9 parts of polyimide, 3.2-7.1 parts of sodium hydrogen phosphate,1.5-3.6 parts of glycerin and 5.5-8.3 parts of trismetyl aminomethane. The production method of the line comprises the steps that metal calcium is fused and subjected to vacuum casting into a metal calcium bar, the metal calcium bar is heated and then extruded into the calcium core layer, the surface of the calcium core layer is evenly coated with the antioxidation coating, after drying is conducted, the calcium core layer is wrapped by a cold-rolled steel strip, rolling is conducted to form a pipe blank, and through welding, the coating seamless solid core pure calcium line is obtained. Through the technical scheme, the problems are solved that in the prior art, since the surface of a calcium wire is easily oxidized, the content of calcium in a core wire is lowered, the calcium yield islow, and the calcium treatment cost is high.

Description

technical field [0001] The invention belongs to the technical field of molten steel refining, and relates to a coated seamless solid-core pure calcium wire special for steelmaking deoxidation and a production method thereof. Background technique [0002] In the process of steelmaking, feeding calcium wire into the steel for denaturation treatment of non-metallic inclusions is a commonly used method of out-of-furnace treatment in steelmaking. Calcium fed to the molten pool, usually in the form of cored wire. Traditional silicon-calcium and calcium-iron cored wires have the functions of deoxidation, desulfurization and denaturation treatment of inclusions in steel, which is beneficial to the improvement of various properties of steel and efficient production of continuous casting, but there are uneven material components, Due to the impurity of the material, inclusions and harmful elements are brought into the steel, polluting molten steel and unstable calcium yield. In rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/00C21C7/06
CPCC21C7/0056C21C7/06
Inventor 杨鑫郭磊张付森
Owner 河北树航冶金材料有限公司