Method for producing steel for high-efficiency alloy welding wires through continuous billet casting

A technology of billet continuous casting and alloy welding wire, which is applied in the direction of welding medium, welding equipment, metal processing equipment, etc., to achieve the effect of promoting floating and entering the slag layer, reducing the risk of nozzle blockage and mold slag agglomeration, and improving the yield

Active Publication Date: 2012-11-21
BEIJING SHOUGANG CO LTD
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Problems solved by technology

However, when the titanium content increases above 0.17%, the above-mentioned defects will still occur frequently

Method used

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  • Method for producing steel for high-efficiency alloy welding wires through continuous billet casting
  • Method for producing steel for high-efficiency alloy welding wires through continuous billet casting
  • Method for producing steel for high-efficiency alloy welding wires through continuous billet casting

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Embodiment Construction

[0027] The present invention can be implemented in iron and steel production plants with LF, RH external refining equipment and full protection casting conditions. The following table 2 to table 6 have listed the time when Shougang Qiangang Company adopts the present invention to produce titanium-containing high-efficiency alloy welding wire steel Examples of key parameters of the production process.

[0028] Table 2 Key parameters of converter process

[0029]

[0030] Table 3 Key parameters of LF refining process

[0031]

[0032] Table 4 Key parameters of RH refining process

[0033]

[0034] Table 5 Key parameters of continuous casting process

[0035]

[0036] Table 6 Control level of finished product components

[0037]

[0038]High-efficiency alloy welding wire is mainly used for automatic gas shielded welding, especially for robotic automatic welding. Therefore, the surface quality of the welding wire is required to be excellent, and the production pr...

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Abstract

The invention relates to a method for producing steel for high-efficiency alloy welding wires through continuous billet casting, belonging to the technical field of steel making. The method comprises the following processes: providing low-sulfur molten iron and scrap steel; smelting in a top / bottom blowing converter; pulling off slag and tapping; deoxidizing the ladle; alloying the molten steel; carrying out LF (Ladle Furnace) refining; carrying out RH (Ruhrstahl Heraeus) refining; carrying out fully-protected continuous casting by a continuous billet casting machine; and checking the cast billets, wherein the key processes comprise the end point control during converter smelting, the dose of deoxidizer, the control on the oxygen activity of the molten steel in the production process, thecontrol on the top slag during LF refining, the denitriding effect during RH refining, the regulation of sulfur and titanium contents in the refining process, the effect of protected casting and the like. The method is characterized by controlling oxygen and nitrogen contents in the molten steel through various process measures in the smelting process, thereby achieving the purpose of controllingthe reaction of titanium with oxygen and nitrogen, and reducing the possibilities that a submerged nozzle is blocked and crystallizer protecting slag is agglomerated. By using the method, the steel for high-efficiency alloy welding wires, of which the titanium content is 0.15-0.22%, can be stably produced.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular provides a production method of billet continuous casting high-efficiency alloy welding wire steel, which is suitable for the production of a class of titanium-containing high-efficiency alloy welding wire steel, and can replace die casting and bloom Production method of continuous casting. Background technique [0002] At present, the technology of various industries is developing towards high energy efficiency and high efficiency, and the welding technology widely used in various industries plays an important role in promoting the development of the industry, the technological progress of products and the development of the national economy. . In the field of welding materials, Japanese researchers have developed a low-splash gas shielded arc welding wire containing an appropriate amount of titanium. The titanium content of the finished product ranges from 0.12-0.25%, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/14C22C33/04B23K35/32
Inventor 朱殷翔靳伟李明王立峰陈涛魏建全
Owner BEIJING SHOUGANG CO LTD
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