Metallurgist最新文献_第3页

Advancements in steelmaking technologies 炼钢技术的进步

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-02-05 DOI: 10.1007/s11015-025-01856-0

A. I. Dagman, A. V. Yaroshenko, S. S. Emelyanov, E. N. Tyulenev

引用次数: 0

Thermal analysis of mechanically activated Cr–B mixture 机械活化Cr-B混合物的热分析

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-14 DOI: 10.1007/s11015-024-01845-9

O. N. Pripisnov, E. V. Shelekhov, S. I. Rupasov

{"title":"Thermal analysis of mechanically activated Cr–B mixture","authors":"O. N. Pripisnov, E. V. Shelekhov, S. I. Rupasov","doi":"10.1007/s11015-024-01845-9","DOIUrl":"10.1007/s11015-024-01845-9","url":null,"abstract":"<div><p>A chromium-boron mixture with the atomic composition corresponding to CrB<sub>2</sub> was subjected to mechanical activation in a high-energy planetary mill for 6–40 min at a balls-to-material ratio of 20:1. The milled powders were analyzed by X‑ray diffraction and other methods. Then the mixture was heated at an initial rate of ~ 6 °C/s to a temperature of 1000 °C. Exothermic peaks associated with the formation of borides were observed on the heating curves. The onset temperature of this transformation decreased with the milling time to 15 min and then reached a plateau. This is due to the formation of a thin layered structure as the milling time increases and the limit of structure thinning is reached. The optimal milling time for preparing the mixture for self-propagating high-temperature synthesis should be 15–20 min, since the thinning of the roll layers after this practically stops or becomes very slow. At such milling duration, boride formation does not occur in the grinder, that is, the energy charge of the mixture is not consumed. At the same time, some literature data suggest that during milling for 40 h, up to 50% of boron is converted into CrB<sub>2</sub>.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"68 9","pages":"1338 - 1344"},"PeriodicalIF":0.8,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tellurium and selenium in the gold-silver ore of the Baleysky ore field (Eastern Transbaikalia) and development of their associated extraction method 东外贝加尔Baleysky矿田金银矿石中的碲、硒及其伴生提取方法研究

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-08 DOI: 10.1007/s11015-024-01854-8

Georgy A. Yurgenson, Lidia V. Shumilova

引用次数: 0

Layered synthesis of billets by pulse MIG welding using austenitic flux-cored wire with nitrogen 用含氮奥氏体药芯焊丝脉冲MIG焊接分层合成钢坯

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01826-y

A. S. Smolentsev, D. N. Trushnikov, G. L. Permyakov, V. E. Veselova, E. B. Votinova

引用次数: 0

The influence of iron stearate and sintering conditions on the structure and properties of powder alloy steel SP50S2KhF 硬脂酸铁和烧结条件对粉末合金钢SP50S2KhF组织和性能的影响

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01843-x

J. V. Eremeeva, Yu. S. Ter-Vaganyants

引用次数: 0

Dearsenizing roasting of fine copper-smelting dusts 细铜冶炼粉尘的脱砷焙烧

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01853-9

Pavel A. Kozlov, Dmitry A. Ivakin, Sergey A. Krayuhin, Vasily A. Kochin, Konstantin L. Timofeev

{"title":"Dearsenizing roasting of fine copper-smelting dusts","authors":"Pavel A. Kozlov, Dmitry A. Ivakin, Sergey A. Krayuhin, Vasily A. Kochin, Konstantin L. Timofeev","doi":"10.1007/s11015-024-01853-9","DOIUrl":"10.1007/s11015-024-01853-9","url":null,"abstract":"<div><p>Fine dust from copper smelting production is processed together with zinc cake in Waelz kilns of a zinc plant to recover non-ferrous and precious metals. The resulting clinker into which copper, precious metals, and most of arsenic pass is used in the smelting of copper-containing raw materials, which causes undesirable accumulation of arsenic in inter-plant circulation. Moreover, the presence of chlorine and fluorine in dust necessitates their removal in the zinc recovery process. It appears rational to use dearsenizing roasting to remove arsenic, chlorine, and fluorine from dust before zinc production. The chemical and phase compositions of dusts are presented. Laboratory studies and pilot tests were performed to determine the optimal roasting conditions. The mode of mixing the starting dust was determined: 90–95% dust, 5–7.5% petcoke, 0–5% calcium oxide, 0–2% pyrite. It was proposed to roast a granulated charge in a rotary tubular kiln at a temperature of 1050 °C for two hours. With these parameters, the degrees of sublimation of arsenic, chlorine, and fluorine were 78–85%, > 95%, and > 97%, respectively, the loss of zinc with sublimates being 4.3–7.2%. The resulting clinker (yield = 51.9–67.4%) can be used to recover zinc at a zinc plant, while sublimates (3.3–4.9% Zn, 23.9–28.0% Pb, 25.4–38.6% As, < 2.6% Cl, < 0.04% F) are additionally processed to separately recover lead cake and transform arsenic to stable form for subsequent utilization.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"68 9","pages":"1406 - 1412"},"PeriodicalIF":0.8,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the stress-strain and thermal states of Ni–Ti-alloy billets subjected to screw piercing 螺杆穿孔镍钛合金坯料的应力-应变及热状态评价

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01848-6

M. M. Skripalenko, V. A. Andreev, B. A. Romantsev, V. S. Yusupov, S. O. Rogachev, M. P. Kuprikov, V. P. Kuznetsov, M. N. Skripalenko, E. V. Shuster

引用次数: 0

Elevation of the wear resistance of a graphite reactor designed for melting thermite charge 用于熔化铝热剂装药的石墨反应器耐磨性的提高

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01847-7

V. A. Khudyakova, S. G. Zhilin, V. V. Predein, O. N. Komarov

{"title":"Elevation of the wear resistance of a graphite reactor designed for melting thermite charge","authors":"V. A. Khudyakova, S. G. Zhilin, V. V. Predein, O. N. Komarov","doi":"10.1007/s11015-024-01847-7","DOIUrl":"10.1007/s11015-024-01847-7","url":null,"abstract":"<div><p>In the process of manufacturing iron-aluminum alloys, the prospects of reducing the costs spent for the refractory and charge materials, as well as for the supply of thermal and electric energy are connected with the realization of the exothermal process of melting of the thermite charge, i.e., in fact, industrial wastes in the form of scale and metal shavings, in the reactor without applying traditional melting units. In view of the high temperature of formed melts, it seems reasonable to use carbon materials as refractories. The durability of the reactor strongly depends on the number of thermal cycles and the possibility of ensuring the mechanical strength and functionality of its elements subjected to the most aggressive thermal effects of the melts. As a result of a series of experiments, we determine the possibility of weakening of the thermal effect of iron–aluminum melts formed as a result of the exothermal reaction on the material of the graphite reactor by regulating the content of active aluminum. Moreover, we propose a version of measures connected with the possibility of updating the design of the graphite reactor aimed at increasing its service life.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"68 9","pages":"1353 - 1363"},"PeriodicalIF":0.8,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of small additions of aluminum on the structure and phase composition of (Fe0.25Co0.25Ni0.25Cr0.125V0.125)83B17 alloy 少量添加铝对（Fe0.25Co0.25Ni0.25Cr0.125V0.125）83B17合金组织和相组成的影响

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01840-0

Andrey I. Bazlov, Evgeny V. Ubyivovk, Ilya V. Strochko, Erzhena N. Zanaeva, Tatiana A. Sviridova

引用次数: 0

Analyzing the modifying ability of rods made from AD31 alloy waste by direct extrolling 分析了AD31合金废棒的直接焙烧改性能力

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-01-07 DOI: 10.1007/s11015-024-01852-w

Sergey B. Sidelnikov, Ekaterina S. Lopatina, Nikita A. Terentev, Denis S. Voroshilov, Andrey V. Parubok, Dmitry I. Kuzin

{"title":"Analyzing the modifying ability of rods made from AD31 alloy waste by direct extrolling","authors":"Sergey B. Sidelnikov, Ekaterina S. Lopatina, Nikita A. Terentev, Denis S. Voroshilov, Andrey V. Parubok, Dmitry I. Kuzin","doi":"10.1007/s11015-024-01852-w","DOIUrl":"10.1007/s11015-024-01852-w","url":null,"abstract":"<div><p>The results of studying the structure and properties of master-alloy rods produced from AD31 alloy extrusion waste by direct extrolling are presented. A SLiPP‑2.5 unit, which is part of the combined processing line in the laboratory of the Department of Metal Forming of the School of Non-Ferrous Metals of the Siberian Federal University, was used to make rods with a diameter of 9 mm from AD31 alloy waste. The process parameters for producing rods from AD31 aluminum alloy by direct extrolling were determined: elongation = 16.5, melt temperature = 760 ±10 °C, rolling strain = 50%, roll speed = 5 rpm. It was established that the initial structure of the master-alloy rod affects the melt, and the rods made from AD31 alloy extrusion waste by direct extrolling have a stable ultra-fine subgrain structure, which allows them to be applied to AD31 alloy. The Alcan test revealed that introducing 3 to 4% rod with a diameter of 9 mm into a solidifying AD31 alloy ingot at a melt temperature of 720 °C and a melt holding time of at least 3 min ensures a stable modifying effect.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"68 9","pages":"1397 - 1405"},"PeriodicalIF":0.8,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0