METAL 2021 Conference Proeedings最新文献_第9页

Identification and evaluation of internal logistics risks within metallurgical supply chain 冶金供应链内部物流风险识别与评估

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4296

Martin Sváček, R. Lenort

引用次数: 0

Laser treated metal heat exchangers for boiling heat transfer enhancement 激光处理金属热交换器的沸腾强化传热

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4209

Ł. Orman, N. Radek, J. Pietraszek, A. Szczotok

引用次数: 0

IN-SITU SYNTHESIS OF MULTICOMPONENT ALLOYS FROM Ni BASED ELEMENTAL POWDERS BY DIRECT LASER DEPOSITION 直接激光沉积镍基元素粉末原位合成多组分合金

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4220

D. Masaylo, S. Igoshin, A. Popovich

{"title":"IN-SITU SYNTHESIS OF MULTICOMPONENT ALLOYS FROM Ni BASED ELEMENTAL POWDERS BY DIRECT LASER DEPOSITION","authors":"D. Masaylo, S. Igoshin, A. Popovich","doi":"10.37904/metal.2021.4220","DOIUrl":"https://doi.org/10.37904/metal.2021.4220","url":null,"abstract":"The paper investigates an approach to the synthesis of classical heat-resistant alloys by laser cladding (LC) or direct laser deposition (DLD). This approach corresponds to the concept of developing the production of small parties of metal products with the economically feasible use of additive technologies. The results of already obtained materials from pure elemental powders and the prospects for the development of such formation of alloys from the liquid phase, as well as metal-matrix composites by 3D printing, are discussed. The paper presents the result of a specimen formation from a mechanical mixture of Ni / Cr / Fe powder, in the mass ratio of the main components, close in composition to the alloy Inconel 600. The produced multilayer specimen was studied by optical and electron microscopy. Measurement of fluctuations in the chemical composition in the specimen to determine the degree of diffusion of elements in the alloy was carried out. The formation of chromium oxide clusters along the boundaries of the tracks, which, presumably, diffuse in the direction of heat removal during crystallization from the melt, was found. The structure of the specimen is represented by large, elongated grains up to 1-2 mm in size, significantly exceeding the height of one pass. The direction of grain growth corresponds to the growth direction of the specimen in the direction of the Z axis.","PeriodicalId":266696,"journal":{"name":"METAL 2021 Conference Proeedings","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123294904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

abrasion wear resistance of selected HVOF sprayed WcCoCr coatings 选定HVOF喷涂WcCoCr涂层的耐磨性

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4205

Sofia Kšiňanová, M. Vostřák, Ž. Dlouhá

引用次数: 0

the Usage of artificial intelligence in recognition of embossed numbers on billet 使用人工智能识别钢坯上的压花数字

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4286

Petra Svobodova, Antonin Tomecek, J. Krátký, H. Špačková, Miroslav Klus

{"title":"the Usage of artificial intelligence in recognition of embossed numbers on billet","authors":"Petra Svobodova, Antonin Tomecek, J. Krátký, H. Špačková, Miroslav Klus","doi":"10.37904/metal.2021.4286","DOIUrl":"https://doi.org/10.37904/metal.2021.4286","url":null,"abstract":"The article is focused on the recognition and localization of numbers on steel billets. Serial numbers are embossed to each billet. Our automated solution allows product identification without human interaction. There are several problems caused by embossing to the hot steel. First, the numbers are not clearly visible. There is a lot of noise around the serial number which causes shadows and reflections. Next, the surface of the billet is rough with grooves and ridges. These issues affect object detection. As a part of the 4 th Industrial Revolution, artificial intelligence and neural networks are used to automate production. Object recognition identifies which numbers are presented in the image. Another problem occurs when the serial number is located anywhere on the billet surface. The aim is to detect multiple objects in the scene using a single neural network. Our proposed solution is based on an extremely fast and accurate model from a class of deep learning algorithms. To localize and identify individual numbers, the You Only Look Once (YOLO) algorithm is implemented. It predicts bounding boxes and assigns classes from category 0 – 9. The approach is fully automatic and detects embossed numbers in real time. A custom dataset and annotations for train the model is created. Due to the lack of training images, data augmentation is used to extend a dataset by increasing the amount of data.","PeriodicalId":266696,"journal":{"name":"METAL 2021 Conference Proeedings","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130552970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy rolling mill automation proposal with utilization of digital image processing 采用数字图像处理的重型轧机自动化方案

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4277

A. Laptev, Cristian Petrachi, Jan Minarcik, B. Čapková, J. Polášek, Nikita Stratinskiy

{"title":"Heavy rolling mill automation proposal with utilization of digital image processing","authors":"A. Laptev, Cristian Petrachi, Jan Minarcik, B. Čapková, J. Polášek, Nikita Stratinskiy","doi":"10.37904/metal.2021.4277","DOIUrl":"https://doi.org/10.37904/metal.2021.4277","url":null,"abstract":"The modern metallurgical industry characterized by increased requirements for quality, economy and efficiency of technological processes. Automation based on a systematic approach to problem solving, it focuses on improving technical means, increasing labor productivity and improving product quality. The ultimate goal is to create automatic systems, which operate without human intervention. The article contains a description of the current state of the heavy rolling mill and a proposal for the automation of its individual components. The main goal of the article is to show the use of a camera system and artificial intelligence in the automation of heavy industry processes. To automate the rolling process on a heavy rolling mill, a machine vision will be used with the help of a laser camera system with digital image processing on rolling wagons used for handling with a rolling bar. This is used for the transfer of the rolled bars between the individual stands and between the rolling calibers within the rolling mill stands. The intended automation of the operation follows the Industry 4.0 trend, which is beginning to inspire even these heavy operations. The concept of an automation system based on artificial intelligence and utilization of machine vision is in great demand and it is possible to expect the rapid development of these scientific fields. The article will also focus on issues, which prevents the use of standard commercial solutions. As part of the feasibility analysis, the conditions prevailing in profile rolling were analyzed. The biggest challenge was the presence of steam in the area of the rolling mill stand, which makes it impossible to precisely guide the rolled bars between the rolling calibers.","PeriodicalId":266696,"journal":{"name":"METAL 2021 Conference Proeedings","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129640656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 CaF2 AND CaCO3 FLUX ADDITIVES ON THE DISTRIBUTION OF GOLD AND PLATINUM BETWEEN MATTE AND SLAG DURING MELTING OF COPPER-NICKEL SULPHIDE MATERIALS 助熔剂添加剂CaF2和CaCO3对铜镍硫化材料熔炼过程中金和铂在锍和渣间分布的影响

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4266

A. Amdur, S. Fedorov

{"title":"INFLUENCE OF CaF2 AND CaCO3 FLUX ADDITIVES ON THE DISTRIBUTION OF GOLD AND PLATINUM BETWEEN MATTE AND SLAG DURING MELTING OF COPPER-NICKEL SULPHIDE MATERIALS","authors":"A. Amdur, S. Fedorov","doi":"10.37904/metal.2021.4266","DOIUrl":"https://doi.org/10.37904/metal.2021.4266","url":null,"abstract":"One of the stages of extracting gold and platinum from copper-nickel sulphide materials is their melting in electric furnaces, where the melt is separated into matte and slag. Gold and platinum are concentrated in the matte, but a significant part of them ends up in the slag, which reduces the recovery of metals. The main reason for such losses is the flotation of matte droplets containing gold and platinum with gas bubbles. One of the options for reducing the loss of valuable components is to add fluxes to the initial charge before melting. The influence of calcite and fluorite on the distribution of gold and platinum over the melting products of copper-nickel sulphide materials (matte and slag) has been experimentally studied based on the above theoretical concepts of droplet flotation. When calcite was added to sulphide ore, there was a significant decrease in the sulphur content in the slag - more than 3 times. This led to a decrease in non-ferrous metals in the slag by 2-3 times, gold from 0.45 to 0.29 ppm, platinum from 2.15 to 2.06 ppm. The addition of fluorite to the mixture of copper-nickel-iron matte and model slag significantly reduced the content of sulphur, non-ferrous metals by 1.5-2.5 times, gold was not found in the slag. The decrease in the amount of sulphides in the slag is mainly due to the fact that the listed additives reduce the viscosity of the slag. This leads to acceleration of the coagulation of matte droplets and increases the rate of their settling to the slag-matte boundary","PeriodicalId":266696,"journal":{"name":"METAL 2021 Conference Proeedings","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127098083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unconventional Method of Production of Cavities in full material on a MachinE 在机器上制造全材料空腔的非常规方法

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4098

J. Moravec

引用次数: 0

LOGICAL-INFORMATION SUBSYSTEM OF THE EXPERT SYSTEM FOR THE DESIGN OF MULTI-ASSORTMENT LOW-TONNAGE PAINT AND VARNISH INDUSTRIES 多品种低吨位油漆清漆工业设计专家系统的逻辑信息子系统

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4178

V. Boldyrev, V. Men’Shikov, A. Savina, N. Bogatov, Yana Seina Kuznetsov, A. Zotkin, Anastasiya Razvodova

引用次数: 0

Speciation of Iron, Zinc, Lead and Calcium in blast furnace top-gas filter dust by sequential leaching 高炉煤气过滤尘中铁、锌、铅、钙的顺序浸出形态

METAL 2021 Conference Proeedings Pub Date : 1900-01-01 DOI: 10.37904/metal.2021.4072

C. Lanzerstorfer

引用次数: 0