Improving the Quality of Production of Sand Core on Core Shooting Machines

2020 ◽  
Vol 989 ◽  
pp. 589-594
Author(s):  
A.Yu. Korotchenko ◽  
D.E. Khilkov ◽  
A.A. Khilkova ◽  
M.V. Tverskoy
Keyword(s):  
Cast Iron ◽  
Software Package ◽  
Cold Hardening ◽  
Iron And Steel ◽  
The Core ◽  
Sand Core ◽  
Technology Of Production ◽  
Core Shooting Process

The article is devoted to the study of the method of modeling the core shooting process of manufacturing core from cold hardening mixtures (CHM) in the software package Flow-3D, as well as consideration of recommendations on the parameters of the core shooting process, to ensure quality castings of cast iron and steel. This technology of production of cores belongs to technologies which are widely used in foundry production.

scholarly journals PERFORATIONS ON THE SURFACE OF IRON CASTINGS

2018 ◽  
pp. 37-42
Author(s):  
O. C. Komarov ◽  
E. V. Rozenberg ◽  
A. N. Karas ◽  
A. M. Neumiarzhytski ◽  
A. N. Apanasevich
Keyword(s):  
Surface Layer ◽  
Cast Iron ◽  
Cold Hardening ◽  
The Core ◽  
Iron Castings ◽  
Selection Of

The mechanism of the formation of veinings on cast iron castings whose cores are made of a cold-hardening mixture is studied. It is shown that the cause of the formation of the veinings are the stresses in the surface layer of the core that arise when a-quartz is converted to a-tridymite. The possibility of reducing the number and size of veinings due to the selection of the composition of paints and the thickness of their layer on the surface of the rods was tested.

scholarly journals RESULTS OF SHRINKAGE ORIGIN DEFECTS DISTRIBUTION COMPUTER SIMULATION IN STANDARD CAST SAMPLE VOLUME OF GREY CAST IRON

2021 ◽  
pp. 71-78
Author(s):  
A. A. Baron ◽  
L. V. Palatkina ◽  
S. V. Palatkin
Keyword(s):  
Computer Simulation ◽  
Cast Iron ◽  
Computer Modeling ◽  
Software Package ◽  
Sample Volume ◽  
Grey Cast Iron ◽  
Cast Sample ◽  
Grey Cast

For cast iron grades SCH 15 and SCH 20, using the computer modeling system of casting processes in the environment of the LVMFlow software package, the possibility of predicting defects of shrinkage origin when obtaining a standard cast sample that determines the grade and quality of the castings of responsible purpose poured simultaneously with it is considered

Compositions Based on Nanosized Powders Carbides of Tungsten and Titanium, Obtained by the Method Self-Propagating High Temperature Synthesis for the Modification of Gray Cast Iron and Steel 110g13L

2019 ◽  
Vol 802 ◽  
pp. 43-56
Author(s):  
Mikhail Georgievich Leontiev
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Cast Iron ◽  
Crystallization Process ◽  
Technological Parameters ◽  
Nanosized Powders ◽  
Iron And Steel ◽  
Average Grain Size

Iron-based alloys (steel and cast iron) are currently the main structural materials that provide a high level of mechanical and technological properties along with a relatively low cost. Increasing the performance characteristics (tensile strength, hardness, wear resistance, corrosion resistance and, ultimately, service life) of cast irons and steels is an urgent task. The quality of castings made of cast iron and steel depends on many technological parameters that affect the processes of crystallization of the melt (casting temperature, molding mixture, chemical composition, volume of casting, overheating of the metal during smelting, etc.). It is possible to improve the quality of castings without changing the technology of smelting and pouring metal into molds, if you learn how to manage the crystallization process. The laboratories have grown defect – free iron crystals with a tensile strength of more than 1000 kg/m2 (strength of carbon steel-40 kg/m2). Attempts to improve the mechanical properties by creating a single crystal are not justified, so you have to go the opposite way-to influence the crystallization process to get a lot of small crystals (grains), which also allows you to achieve high mechanical properties. The dependence of the strength characteristics on the grain size is well described by the law of Hall-Petch, according to which when the average grain size is reduced by 3...5 times there is an increase in the hardness of the material, with a further decrease in the average grain size by more than 10 times – an increase in plasticity. Influence on the processes of crystallization of iron and steel melts (change the size of metal grains, change the shape, size and distribution of graphite inclusions) can be the introduction of small additives substances (modifiers), not chemically interacting with the matrix. The use of modifiers to increase the rate of crystallization, reduce the structural heterogeneity of castings has good prospects. In addition, unlike doping, modification does not require a large number of expensive additives and, accordingly, slightly increases the final cost of production.

MEEHANITE GD

Alloy Digest ◽  
1964 ◽  
Vol 13 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Cast Iron ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Damping Capacity ◽  
Iron And Steel ◽  
Lubricating Properties

Abstract MEEHANITE-GD is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on casting, heat treating, machining, and joining. Filing Code: CI-32. Producer or source: Meehanite Metal Corporation.

MEEHANITE GA

Alloy Digest ◽  
1954 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Cast Iron ◽  
Physical Properties ◽  
Machine Tools ◽  
High Strength ◽  
Heat Treating ◽  
Damping Capacity ◽  
Iron And Steel ◽  
Lubricating Properties

Abstract MEEHANITE GA is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. Applications include machine tools, gears, shafts, and housings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on heat treating and machining. Filing Code: CI-5. Producer or source: Meehanite Metal Corporation.

Assessment of multimorbidity of diseases in geriatric practice

2020 ◽  
pp. 17-21
Author(s):  
Mark Oprenko
Keyword(s):  
Quality Of Life ◽  
The Core ◽  
Definition Of

The definition of the multimorbidity concept reveals insufficient specificity of the comorbidity and multimorbidity definitions and, as a result, confusion in the use of these terms. Most authors are unanimous that the “core” of multimorbidity is presence of more than one disease in a patient. These coexisting diseases can be pathogenetically interconnected and non-interconnected. Regardless, the degree of multimorbidity always affects prognosis and quality of life.

STUDI ANALISIS DAMPAK PADEMI COVID-19 TERHADAP EKSISTENSI PEMBELAJARAN PENDIDIKAN AGAMA ISLAM DI INDONESIA

Edupedia ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 45-53
Author(s):  
Ilzam Dhaifi
Keyword(s):  
Online Education ◽  
Religious Education ◽  
Virtual Classroom ◽  
Education Services ◽  
Religious Consciousness ◽  
The Core ◽  
Equal Education ◽  
The World ◽  
The Government

The world has been surprised by the emergence of a COVID 19 pandemic, was born in China, and widespread to various countries in the world. In Indonesia, the government issued several policies to break the COVID 19 pandemic chain, which also triggered some pro-cons in the midst of society. One of the policies government takes is the closure of learning access directly at school and moving the learning process from physical class to a virtual classroom or known as online learning. In the economic sector also affects the parents’ financial ability to provide sufficient funds to support the implementation of distance learning applied by the government. The implications of the distance education policy are of course the quality of learning, including the subjects of Islamic religious education, which is essentially aimed at planting knowledge, skills, and religious consciousness to form the character of the students. Online education must certainly be precise, in order to provide equal education services to all students, prepare teachers to master the technology, and seek the core learning of Islamic religious education can still be done well.

Estudio del proceso de lavado de contenedores para eliminar tiempos y movimientos innecesarios, caso: Wash Containers S.A de C.V.

2020 ◽  
pp. 25-36
Author(s):  
Juan Alfredo Lino-Gamiño ◽  
Carlos Méndez-González ◽  
Eduardo José Salazar-Araujo ◽  
Pablo Adrián Magaña-Sánchez
Keyword(s):  
Business Process ◽  
Value Chain ◽  
Process Management ◽  
Core Business ◽  
The Core ◽  
Washing Process ◽  
Overall Performance ◽  
The Times

In the value chain it is important to keep in mind the core business of the company, since it depends largely on the competitiveness of the company and its overall performance, bearing in mind that all business indicators depend on it. In this work we will study the washing process within the company WASH CONTAINERS SA DE CV, to improve the washing processes and in this way reduce times and movements in the process leading the company to reduce costs considerably within the operations company daily, having a more competitive operation and with greater profit margin in its business process. Goals: It Improve the logistics of the movement of containers for washing and with it the core business of the company. Methodology: The action research will be applied applying Business Process Management for the improvement of processes in situ, it will be developed in a certain period of time and with that it will establish an improvement projection. Contribution: The improvement of the times for the disposal of the containers and their subsequent use, allows a better competitiveness and with it the income of the company, on the other hand, the transport companies improve in performance in quantity, quality of disposition and with it their income.

Sign in / Sign up

Export Citation Format

Share Document