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Composite alloy for steel-making deoxidization and microalloying
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A technology of microalloying and composite alloys, applied in the field of composite alloys, can solve problems such as reducing steel quality and inclusions
Inactive Publication Date: 2010-03-24
谢英凯
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Problems solved by technology
However, if the content is too high, it is easy to form Al 2 o 3 Inclusions, reducing the quality of steel
Method used
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Embodiment 1
[0017] Feed 500kg, weigh out 230kg metal aluminum block, put 70% of it, that is 175kg aluminum block, into the induction furnace, then add 250kg of clean low-carbon light scrap steel, and then send electricity to melt. After the furnace charge is completely melted, add the remaining 30%, i.e. 75Kg aluminum block and 20kg of magnesiumingot to continue melting, after it is completely melted, it is released from the furnace, cast and formed, and the gained alloy is the basic alloy of the present invention, which consists of:
[0018] Al: 45.3%, Mg: 3.1% Fe: 53.4%.
Embodiment 2
[0020] The alloy was smelted in the same process as in Example 1, but the total amount of aluminum was 220kg, magnesium 30kg, and steel scrap 150kg. (After adding scrap steel, add Ti-Fe100kg containing Ti25% to finally obtain a kind of alloy suitable for producing steel for container plates, which consists of Al: 43.8%, Mg: 3.5%, Ti: 54.8%, Fe: 46.8%.
Embodiment 3
[0022] Smelt the alloy with the same process as in Example 1, but use 180kg of aluminum ingots, 20Kg of magnesium ingots, and 200kg of steel scrap (Nb-Fe and Ti-Fe contain Fe60kg), after adding the scrap steel, add Nb containing 50% Nb-Fe50kg. 50kg of Ti-Fe alloy containing 25% Ti;
[0023] Finally, an alloy suitable for the production of steel for oil and gas pipelines is obtained, which consists of:
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Abstract
the invention discloses a deoxidizing and micro-alloy metallic compound alloy, which consists of 30-65% aluminum and 1-10% magnesium as base alloy. the niobium, vanadium, titanium and calcium are added in the basic alloy according to need, which satisfies micro-alloy request.
Description
technical field [0001] The invention relates to a composite alloy used for steelmaking deoxidation and microalloying. technical background [0002] With the development of technology, the performance requirements of steel are getting higher and higher, not only high strength is required for steel, but also good plasticity and toughness and excellent processing performance are required. In order to meet the requirements of technological development for steel, the production of microalloyed steel is one of the ways. [0003] At present, the addition of niobium, titanium, vanadium and other elements in the production of micro-alloyed steel is done by adding single-component alloys such as: ferroniobium, ferro-titanium, and ferro-vanadium to molten steel. Each of these alloys has certain disadvantages. Some of the elements have a strong chemical affinity with the oxygen in the molten steel, so when they are added to the molten steel, most of them participate in deoxidation and ...
Claims
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Application Information
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