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Al-Si, Al-Mn complex deoxidation of the experimental study


] These results suggest that changes l from the use of A1: Si, A1-Ma complex deoxidizer homes more efficient than a single aluminum oxygen oxygen increased. Added in three equal amount of aluminum, and dissolved oxygen content of molten steel by adding a considerable time before, Al_Si, A1 has a higher oxygen Mn degree of oxygen and acid-soluble aluminum content, that is, to achieve the same degree and acid-soluble aluminum deoxidation content, can reduce the consumption of aluminum. According to the results look. By Al_Si, AI-Mn final deoxidation,[link widoczny dla zalogowanych], aluminum consumption can be reduced by about 4O. 3.2 After the end of oxygen from the oxygen content of copper in the Kui Figure 3 shows, when the final amount of aluminum deoxidation are o. 10, using the A1 a si, AI-Mn steel is the final deoxidation in the furnace total oxygen content decreased. Test also showed that when using the AI-S], AI-Mn complex deoxidation agent platform, which reduced the amount of added aluminum O. O6% when, Al_si final deoxidation of molten steel and pure AI total oxygen content equal to or slightly lower final deoxidation, and AI-Mn steel deoxidized final total oxygen content than that of pure A1 is still much lower final oxygen (see Figure 4). As shown in Figure 4, the heats of the same dissolved oxygen content in molten steel (Figure 2), we can see, the use of AI-Mn end-deoxy, reducing oxygen in steel base,[link widoczny dla zalogowanych], and its essence is to reduce the amount of oxide inclusions in steel. Figure 3 the same as A1 plus the amount of copper in different oxygen Jing 3.3 ZO of oxide inclusions in molten steel deoxidation order to clarify the behavior of AI, AI: Si, AI = Mn end-deoxy-18, Shanghai metals asked (m / n ) 4 complex deoxidation Jing project plus two 0.06 Al changes in steel ship, the law of inclusion formation and removal of oxygen in the oxide inclusions in steel were studied by electron microprobe results were as follows; (1) different final deoxidation with aluminum alone, AI-Si, Al-Mn deoxidation eventually joined in the final after a very short time oxygen scavenger to form a composite oxide (see Figure 5 ~ . Figure 5A1 after final deoxidation 308 AI. O. Inclusion × 1000 (2) Al-Si end-deoxy-Si, the initial formation of stern volume and composition of complex oxides with the oxygen absorber in the Si / Al value of the related. Si/A1 higher the value, the formation of Al-Mn-silicate composite oxygen depleted first l5 3 Lixin other: AI-Si, AI-. 'Mn ~ homes Experimental Study of Oxygen i9 matter (see circle g). Figure 9Al-Mn after final deoxidation 3.5rain liquid mixture of sodium weed × 4004. Discussion 4. IAl-Si,[link widoczny dla zalogowanych], AI-Mn complex deoxidation efficiency of oxygen Qi {for Al, Si, Mn elements, aluminum is the most effective oxygen scavenger, in the usual killed steel, and steel elements in the oxygen equilibrium depends on the oxygen content of aluminum deoxidation reaction, that is, 2 [AI] +3 [O] = (A1208) (1) K = aA1.0 ~ / At · mouth. (2) [O] = (3) For this experiment,[link widoczny dla zalogowanych], the final deoxidation with aluminum, the main formation of pure A1. O inclusions (I; 0: = 1), but with AI =- Si or Al-Mn in the oxygen end of the initial oxygen can be generated when the aluminum manganese silicate inclusions, reduce AIO. Of activity, from (3), we know, will be lower dissolved oxygen content. In addition, compared with aluminum, Al: Si, Al_Mn than significant, less burning of aluminum, so the same amount of Alcan, adding A!-Si and AI-Mn, and Cu content of the water to be remains of Als higher, usually in the range of permissible residual aluminum, steel, acid-soluble aluminum writing means that the dissolved oxygen content is low. Therefore, the use of AIISi, A1-Mn final deoxidation with aluminum higher than the oxygen efficiency. 4.2Al-Si, A1-Mn deoxidation products to Hsu as mentioned above, when the inclusions are liquid, easy to remove the poly floating platform, the purity of the steel increased, according to the well and waited for Mitch Shiwei study manipulation in liquid iron M_nO-SiO. An AlO. Removal of inclusions floating good composition range domain as shown in Figure l0. This is a composition range with higher MnO, from this experiment, that when the AI-Mn deoxidation end, its inclusions composed of easy access or close to the best group】 mao range. Figure 1oj; card inclusions floating in the liquid iron to remove the best composition of 5. Head Conclusion (1) compared with aluminum, A1-Si, Al-Mn can improve the oxygen end of the efficiency of oxygen and reduce the consumption of aluminum to achieve the purpose of section aluminum. T from the use of this test to see AI_Si,[link widoczny dla zalogowanych], Ai-Mr. Final deoxidation, aluminum consumption can be reduced by about 4O (2) compare AlAl-Si, A1-Mn deoxidizer, Al-M 【J final total oxygen content is low oxygen, the product is easy to remove oxygen, is a relatively good performance of the composite deoxidizer. 6. References [1】 Chen Jiaxiang. Chart data sheet steel used [2】 Sheng cut http, etc., based on iron and steel please Shuo

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