A Study on Development of Forming Roller for Miniature Metal Balls Manufacturing Process

2007 ◽  
Vol 539-543 ◽  
pp. 2518-2523
Author(s):  
H.S. Joe ◽  
J.S. Park ◽  
Y.H. Kim
Keyword(s):  
Process Parameters ◽  
Manufacturing Process ◽  
Manufacturing System ◽  
Fem Simulation ◽  
Basic Design ◽  
Knife Edge ◽  
Processing Parameter ◽  
Processing Property ◽  
Rigid Plastic ◽  
Steel Balls

According as the demand of miniature metal balls of various diameter increases, processing property and a variety of coverage are important. In this study, especially an optimal groove design of cutting roller was investigated for determining size and shape of metal ball in the manufacturing system. The effects of radius of the groove and radius of the knife-edge of cutting roller and the speed of roller as process parameters were calculated and analyzed. We applied data of rigid-plastic FEM Simulation with DEFORM3D and ANSYS in basic design of equipment to solve these issues, and checked processing parameter about metal balls manufacturing process that use cutting process of metal wire stock in this research. This paper deals with the new improved process of producing miniature STS316L steel balls continuously. Our first goal is to develop a much more efficient equipment and a much more economical production process

The Key Factor Research in Automobile Covering Mechanical Manufacturing Process

2012 ◽  
Vol 548 ◽  
pp. 566-570
Author(s):  
Xin Jie Zhang ◽  
Jian Qiang Zhou
Keyword(s):  
Production Process ◽  
Process Parameters ◽  
Manufacturing Process ◽  
Fem Simulation ◽  
Simulation Software ◽  
Friction Condition ◽  
Key Factor

The influence rules of the different parameters on automotive covering stamping forming and springback, such as blank-hold force、friction condition、draw-bead is studied using the FEM simulation software DYNAFORM combined with the elastic and plastic FEM. In practical production process, through reasonable setting of process parameters, the springback is effectively controlled, the quality of the products is improved.

A Study of the Influence of the Manufacturing Process Parameters on the Distribution of Residual Stresses in Pipe Walls during Sink Drawing

2018 ◽  
Vol 284 ◽  
pp. 542-546
Author(s):  
Georgy V. Shimov ◽  
V.V. Shimov ◽  
Artem Zavalin
Keyword(s):  
Friction Coefficient ◽  
Residual Stresses ◽  
Process Parameters ◽  
Manufacturing Process ◽  
Fem Simulation ◽  
Taper Angle ◽  
Drawing Speed

The paper presents the results of the study of residual stresses in stainless cold-drawn pipes obtained during FEM simulation of the process of sink drawing. The relation of the value of reduction, the taper angle of the working area of the drawing zone, the drawing speed and the friction coefficient to the pattern of distribution and the value of residual stresses in the pipe walls was established.

Application Of Cusum Chart In Control Of Paper Quality

GIS Business ◽  
2020 ◽  
Vol 14 (6) ◽  
pp. 1062-1069
Author(s):  
S.Ramesh ◽  
B.A.Vasu
Keyword(s):  
Process Parameters ◽  
Manufacturing Process ◽  
Paper Industry ◽  
Primary Data ◽  
Cusum Chart ◽  
Paper Machine ◽  
Statistical Control ◽  
Operating Characteristics ◽  
Small Shift

This paper is an attempt to assess if the manufacturing process of paper machine is in statistical control thereby improving the quality of paper being produced in a paper industry at the time of process itself. Quality is the foremost criteria for achieving the business target. Therefore, emphasis was made on controlling the quality of paper at the time of manufacturing process itself, rather than checking the finished lots at a later time.  This control on quality will help the industry deduct the small shift in the process parameters and modify the operating characteristics at the time of production itself rather than receiving complaints from customers at a later stage.  This paper describes controlling quality at the time of manufacture itself and helps the industry to concentrate on quality at low cost. The researcher has collected primary data at a leading paper industry during October, 2019.  Though X-bar and Range charges were primarily used, CUSUM charts were used to sense the minor shifts in manufacturing process, to explore the possibility of adjusting process parameters during manufacture of paper.

Random impact FEM simulation of irregularly-shaped media for parametric study of vibratory surface enhancement

2021 ◽  
pp. 095440542199012
Author(s):  
Jing Zhang ◽  
Joselito Yam Alcaraz ◽  
Swee-Hock Yeo ◽  
Arun Prasanth Nagalingam ◽  
Abhay Gopinath
Keyword(s):  
Residual Stress ◽  
Fatigue Life ◽  
Parametric Study ◽  
Thermal Loading ◽  
Low Cycle Fatigue ◽  
Fem Simulation ◽  
Surface Finishing ◽  
Aerospace Materials ◽  
Surface Enhancement ◽  
Steel Balls

Aerospace materials experience high levels of mechanical and thermal loading, high/low cycle fatigue, and damage from foreign objects during service, which can lead to premature retirement. Mechanical surface treatments of metallic components, for example, fan blades and blisks, are proven to improve fatigue life, improve wear resistance and avoid stress corrosion by introducing work hardening, compressive residual stresses of sub-surface, and surface finishing. Vibropeening can enhance aerospace materials’ fatigue life involving the kinetic agitation of hardened steel media in a vibratory finishing machine that induces compressive stresses into the component sub-layers while keeping a finished surface. Spherical steel balls are the most widely used shape among steel-based media and have been explored for decades. However, they are not always versatile, which cannot access deep grooves, sharp corners, and intricate profiles. Steel ballcones or satellites, when mixed with round steel balls and other steel media (diagonals, pins, eclipses, cones), works very well in such areas that ball-shaped media are unable to reach. However, a methodology of study the effect of irregularly-shaped media in surface enhancement processes has not been established. This paper proposes a finite element-based model to present a methodology for the parametric study of vibratory surface enhancement with irregularly-shaped media and investigates residual stress profiles within a treated area of an Inconel component. The methodology is discussed in detail, which involves a stochastic simulation of orientation, impact force, and impact location. The contrasting effects of a high aspect ratio, or an edge contact, as opposed to rounded and oblique contacts are demonstrated, with further analysis on the superposition of these effects. Finally, the simulation results are compared with actual residual stress measurements and was found to have a max percent difference of 34% up to 20 [Formula: see text]m below the media surface.

scholarly journals The impact of molded pulp product process on the mechanical properties of molded Bleached Chemi-Thermo-Mechanical Pulp

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Claire Dislaire ◽  
Yves Grohens ◽  
Bastien Seantier ◽  
Marion Muzy
Keyword(s):  
Mechanical Properties ◽  
Water Uptake ◽  
Process Parameters ◽  
Manufacturing Process ◽  
Water Immersion ◽  
Young Modulus ◽  
Drying Time ◽  
Mechanical Pulp ◽  
Hygroscopic Properties ◽  
The Impact

AbstractThis study was carried out using bleached softwood Chemi-Thermo-Mechanical Pulp to evaluate the influence of Molded Pulp Products’ manufacturing process parameters on the finished products’ mechanical and hygroscopic properties. A Taguchi table was done to make 8 tests with specific process parameters such as moulds temperature, pulping time, drying time, and pressing time. The results of these tests were used to obtain an optimized manufacturing process with improved mechanical properties and a lower water uptake after sorption analysis and water immersion. The optimized process parameters allowed us to improve the Young’ Modulus after 30h immersion of 58% and a water uptake reduction of 78% with the first 8 tests done.

Application of Orthogonal Test in Numerical Simulation of Glass Lens Molding

2012 ◽  
Vol 497 ◽  
pp. 245-249
Author(s):  
Dao Cheng Zhang ◽  
Ke Jun Zhu ◽  
Yong Jian Zhu ◽  
Shao Hui Yin ◽  
Jian Wu Yu
Keyword(s):  
Process Parameters ◽  
Orthogonal Experiment ◽  
Fem Simulation ◽  
Orthogonal Test ◽  
Test Method ◽  
Testing Time ◽  
Molding Process ◽  
Glass Lens ◽  
Lens Molding ◽  
Process Factors

Glass lens molding is a high-volume fabrication method for producing optical components. In this paper, combined with the orthogonal test method and finite element method (FEM) simulation, the coupled thermo-mechanical analysis was carried out to analyze the key process factors. In order to reduce the testing time, an orthogonal test with three sets of level factors and three parameters is conducted to obtain the optimal molding process parameters. The result shows that the most significant parameter is molding velocity, the other effect parameters are molding temperature and friction coefficient. According to the previous analysis of orthogonal experiment, it is shown that the best optimal finishing process parameters were A2B1C1.

Design for Product Variety: Key to Product Line Structuring

1995 ◽  
Author(s):  
Kosuke Ishii ◽  
Cheryl Juengel ◽  
C. Fritz Eubanks
Keyword(s):  
Supply Chain ◽  
Life Cycle ◽  
Manufacturing Process ◽  
Life Cycle Cost ◽  
Manufacturing System ◽  
Product Variety ◽  
Product Line ◽  
Customer Preference ◽  
The Cost ◽  
Structure Graph

Abstract This study develops a method to capture the broadest customer preference in a product line while minimizing the life-cycle cost of providing variety. The paper begins with an overview of product variety and its importance in overhead costs: supply chain, equipment and tooling, service, and recycling. After defining the product structure graph as a representation of variety, the paper introduces an approximate measure for the customer importance and life-cycle cost of product variety The cost measure utilizes the concept of late point identification which urges standardization early in the manufacturing process and differentiation at the end of the process. The variety importance-cost map allows engineers to identify cost drivers in the design of the product or the manufacturing system and seek improvements. The refrigerator door example illustrates the concept. On-going work seeks to validate and enhance the method with several companies from different industries.

scholarly journals Optimisation of manufacturing process parameters using deep neural networks as surrogate models

Procedia CIRP ◽  
2018 ◽  
Vol 72 ◽  
pp. 426-431 ◽  
Author(s):  
Julius Pfrommer ◽  
Clemens Zimmerling ◽  
Jinzhao Liu ◽  
Luise Kärger ◽  
Frank Henning ◽  
...  
Keyword(s):  
Neural Networks ◽  
Process Parameters ◽  
Manufacturing Process ◽  
Deep Neural Networks ◽  
Surrogate Models

scholarly journals The GRINDER CONSTRUCTION DESIGN OF A BALL MILL MACHINE FOR THE PROCESS OF HOMOGENIZING BLACK POWDER USING AN AUTOMATIC SYSTEM

2021 ◽  
Vol 2 (Oktober) ◽  
pp. 22-28
Author(s):  
Arif Setiawan ◽  
Dedy Pradigdo ◽  
Farid Hendro Wibowo
Keyword(s):  
Long Range ◽  
Manufacturing Process ◽  
Ball Mill ◽  
Automatic System ◽  
Quantitative Method ◽  
Rapid Development ◽  
Black Powder ◽  
Construction Design ◽  
Steel Balls ◽  
The Military

Combat technology in the military world has undergone a very rapid development in both close combat and long-range combat. Long-range combat is identical to a rocket weapon where the rocket works because of the presence of an igniter that serves to burn the propellant so that when the propellant burns it will produce pressure that will push the rocket hurtling towards a predetermined target. Igniter is very important in the launch of rockets where the filling of the igniter is black powder that has been difficult to obtain because of the difficult manufacturing process and risk of explosion. This research aims to design a tool that can produce black powder with a large enough capacity and good quality and reduce the risk of explosions to support the manufacture of igniters for rocket launches, especially those owned by Indonesian Army. This research used pure experimental quantitative method with empirical calculations to obtain tools with the desired specifications. The results obtained after the calculation are the volume of octagonal prism tubes 2942.5 cm3, the total volume of steel balls with two size variations is 979.5 cm3, the maximum lendutan that occurs on the shaft of the player is 0.108 mm, so it is said to be safe.

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