A method for smelting high-strength wear-resistant steel
A technology of high-strength wear-resistant steel and smelting method, which is applied in the field of special-purpose steel smelting, can solve the problems of high price, high rarity, and sharp contradiction between supply and demand of high-strength wear-resistant steel, and achieve the goal of saving alloy elements and reducing production costs Effect
Active Publication Date: 2016-11-09
HUNAN XIANGYE MACHINERY MFG
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[0002] For a long time, when smelting mining machinery, military machinery and other special-purpose steel for special engineering machinery, especially high-strength wear-resistant steel, ordinary steel billets or scrap steel are usually used as raw materials, and then various alloys are added according to the requirements of the steel type. Element smelting steel, these alloying elements are extracted from various ores, which are expensive, and some even belong to national strategic resources, with high rarity. However, the demand for special-purpose steel such as high-strength wear-resistant steel is constantly improving in terms of variety and quality, and the demand for high-strength wear-resistant steel is also increasing year by year. The contradiction between supply and demand of high-strength wear-resistant steel is becoming increasingly acute
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[0016] The smelting method of the high-strength wear-resistant steel is used to produce the crushing wall material of the cone machine. The material is ZGMn18Cr2MoVTi. The austenite structure of the material is purified, the grain is fine, and the tensile strength is ≥850Mpa after testing, which is relatively In terms of the prior art, its initial hardness is basically the same, but after being used for 10 minutes at the same time, the surface hardness of the crushed wall material of the cone machine produced by the smelting method of the high-strength wear-resistant steel is higher than that of the material produced by the prior art 100HRS, and its strength is better.
[0017] Adopt the smelting method of a kind of high-strength wear-resistant steel to produce the crushing wall material of the cone machine, its alloy composition is controlled as follows, C (1.4~1.65%), Si (0.8~1.2%), Mn (16~18%) , Cr (1.4-2%), Mo (0.6-0.8%), P≤0.086%, S≤0.040%, V (0.3-0.5%), Ti (0.3-0.5%).
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Abstract
A smelting formula technique of high-strength wear resistant steel is disclosed. The technique includes: 1) a step of screening scrap steel I and scrap steel II, namely a step of sorting and screening a large amount of recovered scrap metal materials by utilization of a spectral analysis method to obtain the scrap steel I and the scrap steel II; 2) a step of directionally recovering scrap steel III and scrap steel IV, namely a step of determining recovery sources of the screened scrap steel I and the scrap steel II, performing directional collection and storage of leftover materials and steel cuttings of the sources, and separately storing the directionally recovered scrap steel III and the directionally recovered scrap steel IV; and 3) a step of quantitative matching and quantitative feeding, namely a step of performing quantitative matching and quantitative feeding respectively based on percentages according to grade requirements of the produced high-strength wear resistant steel. The beneficial effects of the technique are that: a large amount of alloy elements or strategy elements can be saved, and the production cost is largely saved.
Description
technical field [0001] The invention belongs to the technical field of special-purpose steel smelting, and more specifically relates to the smelting formula technology of special high-strength wear-resistant steel used in mines and military engineering, that is, a smelting method of high-strength wear-resistant steel. Background technique [0002] For a long time, when smelting mining machinery, military machinery and other special-purpose steel for special engineering machinery, especially high-strength wear-resistant steel, ordinary steel billets or scrap steel are usually used as raw materials, and then various alloys are added according to the requirements of the steel type. Element smelting steel, these alloying elements are extracted from various ores, which are expensive, and some even belong to national strategic resources, with high rarity. However, the demand for special-purpose steel such as high-strength wear-resistant steel is constantly improving in terms of va...
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IPC IPC(8): C22C33/04
Inventor 李建农李介琴李明
Owner HUNAN XIANGYE MACHINERY MFG