METAL 2020 Conference Proeedings最新文献_第8页

ANALYSIS OF THE CAUSES OF INCOMPATIBILITY OF GEARBOX HOUSING CASTING 齿轮箱壳体铸件不兼容原因分析

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3656

M. Mazur, K. Czerwińska, A. Pacana

{"title":"ANALYSIS OF THE CAUSES OF INCOMPATIBILITY OF GEARBOX HOUSING CASTING","authors":"M. Mazur, K. Czerwińska, A. Pacana","doi":"10.37904/metal.2020.3656","DOIUrl":"https://doi.org/10.37904/metal.2020.3656","url":null,"abstract":"The purpose of the conducted tests was to apply an integrally configured method of quality control of the condition of modified helicopter gearbox housing castings. The use of this innovative method (consisting of the following techniques: Pareto-Lorenz diagram, Ishikawa diagram and 5WHY method?). would contribute to identifying the causes of non-compliant castings and, consequently, to eliminating non-compliant castings. As part of the analysis of the efficiency of checkpoints, a non-conformity test was carried out on the gearbox housing castings under analysis, including the identification of sensitive areas in terms of the number of defects. Transmission housing casts have become the subject of research due to significant problems with maintaining their desired level of quality after the introduced structural and technological changes. The proposed method has helped to identify the root cause of non-compliance. These were: inadequate flooding of moulds due to insufficient employee qualifications and inadequate human resources management. The study shows the advisability of using an integrated approach to finding the causes of quality problems on the example of a foundry. This was a new solution for the company, as no in-depth analyses of quality problems using a sequence of quality management techniques have been conducted so far. The improvement actions taken so far have been sufficient in a stabilised production process, but the modification of the process has shown the need to seek other more advanced techniques. This configured and integrated method was proposed and the expected results were achieved. The sequential method developed in the study is a universal way to prevent future non-compliance in this or other companies.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88160380","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

Investigation on possible use of palm Nutshells as Reductant for the Reduction of copper slag for copper recovery 棕榈仁壳作为还原剂用于铜渣还原铜回收的可行性研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3633

M. Kalenga, Motshoea Thunka, D. Nyembwe

{"title":"Investigation on possible use of palm Nutshells as Reductant for the Reduction of copper slag for copper recovery","authors":"M. Kalenga, Motshoea Thunka, D. Nyembwe","doi":"10.37904/metal.2020.3633","DOIUrl":"https://doi.org/10.37904/metal.2020.3633","url":null,"abstract":"The depletion of ores from the first sources on one hand has led to using damped materials that contain valuable metals to be recycled while environmental threats are being targeted and on the other hand high price of reductant coupled with their depletion have caused a stir in the metallurgical industry. Many slags are currently recycled for the recovery of valuable metals while new reductants are being tested for eventually replace the generic reductants. In this work, copper slag from Water-jacket furnace have been used to recover copper in presence of raw palm nutshells as possible replacement of generic reductants. Characterisation of the copper slag, the palm nutshells and products were conducted using XRD, XRF and SEM-EDS. Results have shown that dominants elements in the slag were Fe 33.83 wt%, Zn 6.73 wt%, Cu 1.26 wt%. Raw palm nutshells analyses revealed 6.39 wt% moisture, 61.56 wt% volatile matters and 4.35 wt% ash content while fixed carbon amounted to be 27.89 % and loss of ignition (LOI) 91.8 %. The reduction experiments were conducted in a horizontal tube furnace at 1300 °C under argon to create an inert environment and efficiently test the reducing capability of the palm nutshells. The composition of the metal produced revealed 41.84 wt% Cu, 26.41 wt% Co and 31.75 wt% Fe. However, it was noticed that the miscibility of the metal and the slag was prominent. As a first attempt, results showed very promising and further investigations are required to reveal optimums","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83585444","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

ASSESSMENT OF PRODUCTION EQUIPMENT OF chosen rolling mill IN POLAND 波兰选定轧钢厂生产设备评价

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3647

M. Ingaldi, M. Mazur

引用次数: 0

study of secondary phases in trip steel by advanced SEM and AFM Techniques 先进的扫描电镜和原子力显微镜技术对trip钢中二次相的研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3516

Š. Mikmeková, O. Ambrož, Veronika Hegrová, T. Aoyama

引用次数: 0

NUMERICAL STUDY OF THE BENDING OF STEEL SHEETS TRIP 304L 钢板弯曲的数值研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3488

Amar Boudedja, Aghiles Hannaou, Siham Ben Abdesselam, M. Almansba

引用次数: 0

THE TECHNOLOGY FOR THE REDUCTION OF METAL OXIDES USING WASTE POLYETHYLENE MATERIALS 利用废旧聚乙烯材料减少金属氧化物的技术

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3592

Sh. T. Khojiev, S. Matkarimov, Etibor Tukhtaboy kizi Narkulova, Z. Matkarimov, Nasiba Yuldasheva

{"title":"THE TECHNOLOGY FOR THE REDUCTION OF METAL OXIDES USING WASTE POLYETHYLENE MATERIALS","authors":"Sh. T. Khojiev, S. Matkarimov, Etibor Tukhtaboy kizi Narkulova, Z. Matkarimov, Nasiba Yuldasheva","doi":"10.37904/metal.2020.3592","DOIUrl":"https://doi.org/10.37904/metal.2020.3592","url":null,"abstract":"The study relates to the processing of zinc-containing wastes of metallurgical production using products of joint pyrolysis of polyethylene wastes and wood pods. The process is carried out in two stages: preparation of polyethylene waste for the operation and then the recovery process. Zinc-containing wastes are thickened, dehydrated to a moisture content of not more than 10 - 13%, mixed with a reducing agent. Dehydrated Zinc-containing wastes (cake or sludge) are mixed with synthetic reducing agents in a mass ratio cake - artificial reducing agent from 8.8: 2.2 to 8.2: 2.8, respectively, and pelletized. They carry out reductive heat treatment of pelletized waste in the presence of a reliable carbon-containing reducing agent in the amount of 20-40% by weight of the processed waste and the resulting products of the combined pyrolysis of polyethylene waste and wood pods with counter current air blasting in a rotary kiln, distillation of zinc and trapping of sublimates to produce zinc oxides. Moreover, before igniting a reliable, reducing agent and pyrolysis products of polyethylene wastes (synthetic reducing agent), gaseous fuel is burned in the working volume of the furnace. This study will increase the intensity of the processes of sublimation of zinc and reduction of iron, increase the degree of utilization of polymer waste.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77046965","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: 5

STUDYING THE SELF-ORGANIZATION OF MACROMOLECULES ON THE SURFACE OF TEXTURED POLYMER COATING OF METAL SHEET 研究了金属薄板结构聚合物涂层表面大分子的自组织

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3566

O. Maksimova, V. Smirnov, S. Osipov, E. Menshikov, A. Maksimov, V. I. Egorov, A. Trifanova, Aleksander Baidzhanov, N. Osipova

引用次数: 0

Advantages and limitations of using the QFD method in the production of copper PRODUCTS – CASE study 在铜产品生产中使用QFD方法的优点和局限性-案例研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3655

M. Jagusiak-Kocik

引用次数: 0

INVESTIGATION OF THE PROCESS WINDOW FOR DEFORMATION INDUCED FERRITE TO IMPROVE THE JOINABILITY OF PRESS-HARDENED COMPONENTS 形变诱导铁素体提高冲压硬化件焊接性能的工艺窗口研究

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3523

B. Behrens, K. Brunotte, H. Wester, E. Stockburger

{"title":"INVESTIGATION OF THE PROCESS WINDOW FOR DEFORMATION INDUCED FERRITE TO IMPROVE THE JOINABILITY OF PRESS-HARDENED COMPONENTS","authors":"B. Behrens, K. Brunotte, H. Wester, E. Stockburger","doi":"10.37904/metal.2020.3523","DOIUrl":"https://doi.org/10.37904/metal.2020.3523","url":null,"abstract":"Due to their high tensile strengths increasing the crashworthiness of the vehicles, ultra-high strength steels are increasingly used in the automotive industry, for example in components like B-pillars or tunnel. 22MnB5 is a premier candidate for this cause, since it can be press-hardened and phase-transformed into the martensitic phase, resulting in high hardness and tensile strength. However, complications can arise in the assembly of press-hardened components since conventional mechanical joining processes have their limitations due to high forces required for joining press-hardened steels, especially in multi-sheet layers. Therefore, this study focuses on the determination of an optimum process window to influence the 22MnB5 microstructure thermo-mechanically during press hardening, causing a local softening. This so-called deformation-induced ferrite improves ductility at the desired locations to ease the mechanical joining operation in the assembly. Investigations are performed on a forming dilatometer varying the cooling rate, the introduced amount of plastic strain and the forming temperature along with metallographic as well as microhardness measurements. Based on the laboratory tests, a process window of the deformation induced ferrite is derived for an application in a forming press.","PeriodicalId":18449,"journal":{"name":"METAL 2020 Conference Proeedings","volume":"449 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76058006","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: 2

Influence of vacuum on adjusting parameters of high pressure die casting parts from alloy AlSi9Cu3(Fe) 真空对AlSi9Cu3(Fe)合金高压压铸件调整参数的影响

METAL 2020 Conference Proeedings Pub Date : 2020-01-01 DOI: 10.37904/metal.2020.3630

M. Ferdyn, J. Piątkowski

引用次数: 0