Smelting method for electrode bar base material for electroslag remelting of H13 steel at protective atmosphere

A technology of electroslag remelting and protective atmosphere, which is used in casting molten material containers, manufacturing tools, metal processing equipment, etc., can solve the problems of low cleanliness and high oxygen content, and achieve the effect of improving cleanliness and reducing inclusion content.

Active Publication Date: 2021-06-18
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem that the base material of the electrode bar used for electroslag remelting H13 steel in the protective atmosphere has low cleanliness and high oxygen content

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  • Smelting method for electrode bar base material for electroslag remelting of H13 steel at protective atmosphere

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Embodiment

[0039] This embodiment provides three groups of electrode rod base materials for protective atmosphere electroslag remelting H13 steel smelted by the smelting method of the present invention, such as Examples 1, 2 and 3. The specific smelting process includes the following steps:

[0040] a. Electric furnace steelmaking takes scrap steel, ferroalloy, structural parts, recarburizer and pig iron for batching; puts lime on the bottom of the furnace and then loads the material, and sends electricity to melt; the furnace material is fully melted to control the temperature, single-tube low-pressure deep oxygen blowing, and fully stirred. , Sampling and analysis of components, controlling the contents of [C] and [S] to obtain molten steel. The specific process parameters are shown in Table 1.

[0041] Table 1 EAF steelmaking process parameters

[0042] example Oxygen blowing temperature / ℃ [C] Content / % [S]Content / % 1 1608 0.05 0.04 2 1607 0.05 0.06 3 1...

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Abstract

The present invention discloses a smelting method for an electrode bar base material for electroslag remelting of H13 steel at a protective atmosphere, and belongs to the field of ferrous metallurgy. The smelting method for the electrode bar base material for electroslag remelting of the H13 steel at the protective atmosphere includes steps of: electric furnace steelmaking, LF furnace refining, VD vacuum degassing, protective pouring and the like. According to the method disclosed by the present invention, the content of inclusions in the molten steel can be effectively reduced by adjusting the composition of LF slag, a proper VD argon soft blowing system, protecting pouring and the like, and thus, the cleanliness of the electrode bar base material is improved. The electrode bar base material prepared by using the method provided by the present invention is low in oxygen content and inclusion content and high in cleanliness, and the problem that an existing electrode bar base material for electroslag remelting of the H13 steel at the protective atmosphere is low in cleanliness can be effectively solved.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy, and relates to protective atmosphere electroslag remelting H13 steel, in particular to a method for smelting an electrode rod base material used for protective atmosphere electroslag remelting H13 steel. Background technique [0002] Mold is the foundation of industrial production, known as the "mother of industry". The level of mold steel production has become an important indicator to measure the level of a country's manufacturing industry. Various molds based on mold steel production determine product quality. and its economic benefits. At present, the hot work die steel mainly used in my country is the national standard H13 (4Cr5MoSiV1). In actual production, due to the large amount of alloy elements in H13, each element is prone to oxidation and burning during the production process. Oxidation inclusions are produced during the deoxidation process, which will reduce the Product quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C33/06C21C7/10C21C7/06C21C7/00B22D25/04B22D41/58C22B9/18
CPCC22C38/02C22C38/04C22C38/22C22C38/24C22C33/06C21C7/10C21C7/06C21C7/0087B22D25/04B22D41/58C22B9/18
Inventor 蒋琪吴铖川王唐林王洪利
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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