Application of TOPSIS and ANOVA Methods to Evaluate the Electrical Resistance Spot Welding Process Parameters of AISI 1020 Steel

2020 ◽  
Vol 12 (4) ◽  
Author(s):  
Harshavardhana Natarajan ◽  
Sundar Singh Sivam Sundarlingam Paramasivam ◽  
Durai Kumaran ◽  
G. Balakumaran ◽  
R. Naveen
Keyword(s):  
Spot Welding ◽  
Hold Time ◽  
Welding Process ◽  
Current Control ◽  
Production Costs ◽  
Steel Plates ◽  
Test Results ◽  
Electrode Current ◽  
The Cost

Deformation and deterioration of the electrode caused by chemical reaction is resistant to AISI 1020 with caps screw electrodes. In this study, squeeze, weld, hold time, current and pressure is evaluated for the nugget diameter. OP1is the surface waviness, OP2 is the force, OP3 is the nugget height and OP4 is welded by spot welding on steel plates. AISI 1020 steel plates with thicknesses of 0.8 mm and 1.5mm for connecting the cap screw electrode, current and clock sensor with current control for 120 kVA capacitors are connected. The cycle welding currents of 5, 10, 15, 20 and 25 were selected and increased from 8 kA to 10 kA is done during the welding process. In this study, OP1 to OP4 are selected and the verification experiment is performed in an optimal state to observe the development accuracy. Based on confirmation of test results, it was determined to develop a model that can be effectively used to predict the size of weld surface thereby improving the quality of the weld and calculating the cost of the top screw head. The welded joints of two electrodes are exposed to weld radius. The groove, force and valve height are calculated by the ingot detector, dynamometer and ultrasonic. This allows the workstation to be welded to the desired contour while reducing its production costs.

scholarly journals Production Automation as A Factor in Improving Product Quality in The Automotive Industry

2020 ◽  
pp. 1-25
Author(s):  
Ewa Kulińska ◽  
Dariusz Masłowski ◽  
Małgorzata Dendera-Gruszka ◽  
Lilianna Wojtynek ◽  
Konstanty Szeląg
Keyword(s):  
Product Quality ◽  
Spot Welding ◽  
Industrial Robot ◽  
Welding Process ◽  
Quality Parameters ◽  
The Body ◽  
Production Costs ◽  
Production Automation ◽  
The Impact

The automation of production is an important element in the functioning of any production enterprise. The aim of this article is to analyze the quality of the product made manually with the use of spot-welding machines and to analyze the quality of the product made by the industrial robot type "Fanuc Robotics S-420i". The analyzed product was the front panel of the body, made of semi-finished products in the spot-welding process. During the analysis, the impact of production automation on the product quality was found. Applications of the robotized welding process are used not only because of better quality parameters, but also because of the significant reduction of production costs and less fatigue of employees. The robot operator is a quality controller and contributes to quality management.

Analysis of Electromagnetic Inverse Model of Resistance Spot Welding

2010 ◽  
Vol 160-162 ◽  
pp. 974-979
Author(s):  
Nai Feng Fan ◽  
Zhen Luo ◽  
Yang Li ◽  
Wen Bo Xuan
Keyword(s):  
Resistance Spot Welding ◽  
Regularization Method ◽  
Spot Welding ◽  
Influence Factors ◽  
Great Influence ◽  
Welding Process ◽  
Inverse Model ◽  
Resistance Spot ◽  
Inversion Theory

Resistance spot welding (RSW) is an important welding process in modern industrial production, and the quality of welding nugget determines the strength of products to a large extent. Limited by the level of RSW quality monitor, however, RSW has rarely been applied to the fields with high welding quality requirements. Associated with the inversion theory, in this paper, an electromagnetic inverse model of RSW was established, and the analysis of influence factors, such as the layout of the probes, the discrete program and the regularization method, was implemented as well. The result shows that the layout of the probe and the regularization method has great influence on the model. When the probe is located at the y direction of x-axis or the x direction of y-axis and Conjugate Gradient method is selected, a much better outcome can be achieved.

scholarly journals Numerical Simulation Mode of Spot Contact Welding Processes

2021 ◽  
pp. 85-91
Author(s):  
А.С. Угловский ◽  
И.М. Соцкая ◽  
Е.В. Шешунова
Keyword(s):  
Spot Welding ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Welding Parameters ◽  
Low Carbon ◽  
Detailed Data ◽  
Welding Quality ◽  
Welding Processes ◽  
Contact Welding

Цель рассмотрения численного метода заключалась в получении подробных данных, позволяющих оценить проведение сварочного процесса: изменение объёма сварного шва, радиуса сварного шва, радиуса зоны термического влияния. При проведении моделирования авторами выведены зависимости параметров точечной сварки низкоуглеродистой стали толщиной до 3,2 мм. Данные зависимости будут определять качество сварных швов. Соответствующее сочетание параметров точечной сварки обеспечит прочное соединение и хорошее качество сварки. The purpose of the numerical method consideration was to obtain detailed data allowing evaluating the performance of the welding process: changing the volume of the weld, the radius of the weld, the radius of the weld-affected zone. During the simulation the authors have derived dependencies of the parameters of spot welding of low-carbon steel up to 3.2 mm thick. These dependencies will determine the quality of the welds. The correct combination of spot welding parameters will ensure a firm joint and good welding quality.

Formation of the cost structure for bakery products in the format of economic cooperation with partners

2020 ◽  
pp. 74-81
Author(s):  
L. Golovina ◽  
E. Yurkov
Keyword(s):  
Cost Structure ◽  
Production Costs ◽  
Bakery Products ◽  
White Bread ◽  
Pricing Policy ◽  
Financial Condition ◽  
Retail Chains ◽  
The Cost ◽  
Baking Industry

The article examines important problematic issues of domestic bakery production. On the example of one of the bakeries of the Orel region, the changes in the list of production costs for the production of white bread for the period 1999-2019 are analyzed. The article discusses the benefits for the baking industry of canceling the return of unrealized bread from commercial enterprises. The reasons for the deterioration of the quality of wheat flour and white bread in the country's retail chains are considered. The problem of increasing the profitability of bakery production due to changes in the pricing policy is touched upon. The conditions for improving the financial condition of bakery enterprises, as well as the possibility of attracting investment in the industry, are considered.

Welding of Aluminum to DP600 Steel Plates by Refill Friction Stir Spot Welding Process (Refill FSSW): Preliminary Results

2014 ◽  
Vol 1082 ◽  
pp. 123-132 ◽  
Author(s):  
Roger Navarro Verastegui ◽  
José Antonio Esmerio Mazzaferro ◽  
Cíntia Cristiane Petry Mazzaferro ◽  
Telmo Roberto Strohaecker ◽  
Jorge Fernandez Dos Santos
Keyword(s):  
Spot Welding ◽  
Rotation Speed ◽  
Welding Process ◽  
Steel Plates ◽  
Mechanical Resistance ◽  
Shear Tests ◽  
Friction Stir ◽  
Lap Shear ◽  
Substantial Change ◽  
Tool Rotation

The main objective of the current work was to produce sound Refill FSSW joints between AA6181-T4 aluminum and DP600 steel plates. The steel plates were used in two different surface conditions: with and without galvanized surface layer. The Taguchi statistical method was used to find out the set of parameters indicated to produce joint with higher mechanical resistance. Then, the possibility of joining these dissimilar metals using the Refill FSSW process was verified. Tool rotation speed and welding time were varied to observe its effect over the joint behavior. The results of lap shear tests showed that galvanized layers do not cause any substantial change on the final joint mechanical resistance, even though different joining mechanisms had been observed.

Optimizing spot welding parameters in a sheet metal assembly by neural networks and genetic algorithm

2007 ◽  
Vol 221 (7) ◽  
pp. 1175-1184 ◽  
Author(s):  
M Hamedi ◽  
M Shariatpanahi ◽  
A Mansourzadeh
Keyword(s):  
Neural Networks ◽  
Spot Welding ◽  
Welding Process ◽  
Welding Current ◽  
The Body ◽  
Welding Parameters ◽  
Automotive Body ◽  
Body In White ◽  
Assembly Operations

Deformation of the spot-welded sub-assemblies in assembly operations and the gap between the matching sub-assemblies have been quality concerns specifically in the automotive industry. Overall quality of the car body and its sub-assemblies, apart from quality of each stamped part, depends markedly on the welding process. This paper considers optimization of three important process parameters in the spot welding of the body components, namely welding current, welding time, and gun force. In this research, first the effects of these parameters on deformation of the sub-assemblies are experimentally investigated. Then neural networks and multi-objective genetic algorithms are utilized to select the optimum values of welding parameters that yield the least values of dimensional deviations in the sub-assemblies. Welding sub-assemblies with the optimized set of parameters brought all of them into the tolerance range. The proposed approach can be utilized in manufacturing sub-assemblies that can fit and match better with adjacent parts in the automotive body. It enhances quality of the joint and will result in improving overall quality of the body in white.

scholarly journals Quality of pre-sprouted sugarcane seedlings grown on substrates with decomposed babassu palm stem

2021 ◽  
Vol 51 ◽  
Author(s):  
Romário Martins Costa ◽  
Marcos Renan Lima Leite ◽  
Sâmia dos Santos Matos ◽  
Rayssa Carolinne Mouzinho de Sousa ◽  
Raissa Rachel Salustriano da Silva-Matos ◽  
...  
Keyword(s):  
Growth And Development ◽  
Dry Mass ◽  
Quality Parameters ◽  
Point Of View ◽  
Production Costs ◽  
Economic Point ◽  
Babassu Palm ◽  
Number Of Leaves ◽  
The Cost

ABSTRACT The use of pre-sprouted seedlings in the implantation of sugarcane crops not only reduces the establishment period and production costs, but also has other advantages, such as a lesser requirement of propagules (stems) and greater phytosanitary control of the seedlings, when compared to conventional planting. Commercial substrates are also expensive and their use increases the cost of seedlings. This study aimed to evaluate the quality of sugarcane pre-sprouted seedlings grown on substrates with different proportions of decomposed babassu palm stem (DBPS), as well as to recommend the substrate formulation that provides the most favorable environment for the growth and development of sugarcane pre-sprouted seedlings. For preparation of the substrate (S), DBPS and soil were used in the following proportions: S1: 0 % of DBPS + 100 % of soil; S2: 20 % of DBPS + 80 % of soil; S3: 40 % of DBPS + 60 % of soil; S4: 60 % of DBPS + 40 % of soil; S5: 80 % of DBPS + 20 % of soil; S6: 100 % of DBPS + 0 % of soil. The use of S2 and S3 considerably improved the seedling quality parameters, such as sprout diameter and length, number of leaves and total, shoot and root dry mass. However, from an economic point of view, S2 is recommended for use.

The role of feeding in the prevention of non-communicable diseases of poultry

2019 ◽  
Author(s):  
Сергей Енгашев ◽  
Syergyey YEngashyev ◽  
Тамара Околелова ◽  
Tamara Okolelova
Keyword(s):  
Metabolic Disorders ◽  
Raw Materials ◽  
Production Costs ◽  
Biologically Active ◽  
Poisonous Plants ◽  
Minimum Requirements ◽  
The Cost ◽  
Poultry Farming

The book deals with many factors, including anti-nutritional, determining the biological value of feed components. Considerable attention is paid to the minimum requirements that must be imposed on the quality of raw materials and can be met in each economy. Provides information on poisonous plants and weeds that may be present in the plant material and cause phytotoxicity. The causes of diseases of feed nature associated with metabolic disorders, and ways to prevent them. The consequences of technological violations in poultry farming are revealed. The role of the quality of raw materials, biologically active and mineral substances in the prevention of certain diseases of forage nature, increasing the productivity of poultry, reducing the cost of feed and their production costs. It is addressed to specialists and managers of poultry farms, feed industry enterprises, researchers, postgraduates and students.

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