М. Х. Зиатдинов, И. М. Шатохин, Леопольд Игоревич Леонтьев
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引用次数: 7

摘要

本文介绍了炼钢和高炉炼铁用复合铁合金专用SHS技术开发的研究成果。为解决建立冶金生产线的主要目标,开发了一种新的SHS方法的实际实施方法——冶金SHS过程。SHS的冶金版本是基于使用不同的冶金合金作为主要原料;其中包括铁氧体合金生产中产生的粉尘废物。在这种情况下,燃烧合成的过程是通过放热交换反应实现的。在这里,复合材料形成;它们是基于与铁结合的无机组合物和/或基于铁的合金。研究表明,根据源试剂的聚集状态,冶金SHS过程可以是无气、吸气或产气的。这些过程的燃烧模式差别很大。为了安排弱放热系统中的冶金SHS过程,可以使用不同版本的热键合原理。研究了氮化钒铁和铬铁的自蔓延高温合成。研究表明,源合金的相组成对钒铁燃烧流的一致性和燃烧机理有很大影响(如果在氮气气氛中燃烧)。在渗氮σ-(Fe - V)过程中,发生了过程活化;当相变温度达到(~1200℃)时,金属间化物转变为α-固溶体。氮化钒铁产品的组成结构是由熔融铁和固体氮化钒组成的固液液滴颗粒汇合形成的。铬铁与氮相互作用的三相机制有助于实现高氮化。结果表明,在共流过滤模式下,随着氮流量的增加,氮化过程中铬铁(和铬)的燃烧速率增加。在这里,强制过滤(4.7 - 7.5% N)时铬铁氮化程度远小于非强制过滤(8.8 - 14.2% N)时。
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ТЕХНОЛОГИЯ CВС КОМПОЗИЦИОННЫХ ФЕРРОСПЛАВОВ ЧАСТЬ I. МЕТАЛЛУРГИЧЕСКИЙ СВС ПРОЦЕСС. СИНТЕЗ НИТРИДОВ ФЕРРОВАНАДИЯ И ФЕРРОХРОМА
The article presents research findings in the development of a  specialized SHS technology for composite ferrous alloys for steel melting and blast furnace iron-making. To resolve the principle goal of creating metallurgical production lines it was developed a new approach to practical implementation of the SHS method – a metallurgical SHS process. The metallurgical version of SHS is based on using different metallurgical alloys as the main raw stock; those include dust-type wastes of ferrite alloys production. In this case, the process of synthesis by combustion is implemented via exothermic exchange reactions. Here, composite materials form; they are based on inorganic compositions bound with iron and/or an alloy based on iron. It has been shown that depending on the aggregate state of source reagents, metallurgical SHS processes can be gasless, gasabsorbing or gas-yielding. Combustion modes for these processes largely differ. To arrange for metallurgical SHS process in weakly exothermic systems, one can use different versions of the thermal bonding principle. The authors have investigated self-propagating high-temperature synthesis of nitrided ferrovanadium and ferrochrome. It has been shown that the phase composition of the source alloy has strong impact on the consistent behaviors of the combustion flow and the combustion mechanism of ferrovanadium (if combustion is taking place in nitrogen atmosphere). In the course of nitriding σ-(Fe – V), process activation takes place; the activation is related to the transformation of the intermetallide into α-solid solution when the phase transition temperature is reached (~1200  °C). The composition structure of ferrovanadium nitride products is formed by the confluence of solid-liquid droplet-particles that consist of molten Fe and solid vanadium nitride. A 3-phase mechanism of ferrochrome interaction with nitrogen facilitates the achievement of a high degree of nitriding. It was shown that the combustion rates of ferrochrome (and chrome) during nitriding in coflow filtration mode increase as the nitrogen flow rate is increased. Here, the degree of ferrochrome nitriding during forced filtration (4.7  –  7.5  %  N) is much less than that during non-forced filtration (8.8  –  14.2  %  N).
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来源期刊
Izvestiya Vysshikh Uchebnykh Zavedenij. Chernaya Metallurgiya
Izvestiya Vysshikh Uchebnykh Zavedenij. Chernaya Metallurgiya Materials Science-Materials Science (miscellaneous)
CiteScore
0.90
自引率
0.00%
发文量
81
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