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Remelting electroslag premelting material for high alloy steel round billet containing aluminum and titanium and preparation method thereof

A high-alloy steel and electroslag premelting technology, which is applied in the field of electroslag remelting, can solve unknowable problems, achieve the effects of improving productivity, uniform and stable slag composition, and shortening the formation time of slag pools

Inactive Publication Date: 2014-04-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the applicable object of this patent is the titanium alloy steel slab. Due to the huge difference between the slab and the round billet, it is not known whether it is applicable to the titanium alloy steel round billet.

Method used

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  • Remelting electroslag premelting material for high alloy steel round billet containing aluminum and titanium and preparation method thereof
  • Remelting electroslag premelting material for high alloy steel round billet containing aluminum and titanium and preparation method thereof
  • Remelting electroslag premelting material for high alloy steel round billet containing aluminum and titanium and preparation method thereof

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Embodiment

[0032] The above-mentioned components are provided by the following raw materials, and the respective component weight percentages of the raw materials satisfy respectively:

[0033] Lime: CaO ≥96%, SiO 2 ≤1.0%, FeO ≤0.5%, S ≤0.05%, the balance is impurities;

[0034] Fluorite: CaF 2 ≥95%, SiO 2 ≤1.0%, FeO ≤0.5%, S≤0.05%, the balance is impurity;

[0035] Alumina powder: Al 2 o 3 >95%, SiO 2 ≤1.0%, FeO ≤1.0%, S ≤0.05%, the balance is impurities;

[0036] Fused magnesia: MgO ≥ 95%, SiO 2 ≤1.0%, CaO ≤1.5%, the balance is impurity;

[0037] Titanium dioxide: TiO 2 ≥92%, SiO 2 ≤1.0%, the balance is impurities.

[0038] Using the above materials, the cost is low, and the stability of the premelt can be improved, so that the premelt has the following physical properties: the temperature of the hemispherical point is 1300-1350 o C, 1550 o C viscosity is 0.020.05 Pa s, calculated to be 1600 o C conductivity is 2-3 Ω -1 cm -1 .

[0039] A method for preparing a ...

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Abstract

The invention discloses a remelting electroslag premelting material for a high alloy steel round billet containing aluminum and titanium and a preparation method thereof. The remelting electroslag premelting material is prepared from the following components in parts by weight: 20-25 parts of CaO, 28-32 parts of Al2O3, 40-45 parts of CaF2, 2-4 parts of MgO, 2.5-4 parts of TiO2, less than 1.5 parts of SiO2, and less than 0.3 part of FeO. The remelting electroslag premelting material has uniform and stable components, the time for melting slag charge is shortened, the degree of environment contamination is lowered, power consumption is lowered, the oxidation of alloy elements such as Al and Ti is reduced, alloy elements are uniformly distributed in electroslag ingots, the surface quality of an ingot casting is good, and the interior thereof is qualified.

Description

technical field [0001] The invention relates to the technical field of electroslag remelting, in particular to a remelting electroslag premelt for aluminum-containing titanium-containing high-alloy steel round blanks and a preparation method thereof. [0002] Background technique [0003] High-alloy steels containing aluminum and titanium are often used in the manufacture of key core components of aero-engines. With the rapid development of the aviation industry, more stringent requirements are put forward for the quality of high alloy steel. High-quality high-alloy steels are often produced by electroslag remelting. Electroslag remelting can improve the internal structure of steel ingots, reduce non-metallic inclusions and impurities in steel, and improve the hot workability of steel. [0004] In the electroslag remelting smelting process, the liquid droplets formed by the melting of the consumable electrode pass through the molten slag layer to be purified to improve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18
Inventor 郭银涛何生平陈固军王谦
Owner CHONGQING UNIV
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