Modern manufacturing methods for the production of steel sheets

1949 ◽  
Vol 28 (8) ◽  
pp. 373
Author(s):  
H.H. Stanley
Keyword(s):  
Steel Sheets ◽  
Modern Manufacturing ◽  
Manufacturing Methods

British Rail Class 58 Diesel Electric Locomotive

1986 ◽  
Vol 200 (2) ◽  
pp. 135-147 ◽  
Author(s):  
M W J Etwell
Keyword(s):  
Type Structure ◽  
Electrical Engineer ◽  
Design Development ◽  
Electric Locomotive ◽  
Design Features ◽  
Main Design ◽  
Modern Manufacturing ◽  
Manufacturing Methods

This paper outlines the basic development background of the Class 58 locomotive and main design features, with areas of design development resulting from the introduction into service in 1983–85 of the first build of thirty-five locomotives and detail changes in design being applied to the second batch of fifteen locomotives authorized in 1984. This locomotive design developed from a joint exercise between British Rail Engineering Limited (BREL) and the then Chief Mechanical and Electrical Engineer (CM and EE), British Railways Board (BRB) in 1977 which resulted in BREL fully participating in the design development to utilize modern manufacturing methods. The Class 58 was designed by BR specifically for freight duties and is based on a strength underframe with bonnet-type structure and equipment in modular assemblies.

INVESTIGATION USING FINITE ELEMENT ANALYSIS OF EFFECT ON CRATER GEOMETRY OF DIFFERENT ABRASIVE TYPES IN ABRASIVE WATER JET MACHINING

2021 ◽  
pp. 2150060
Author(s):  
KADIR GOK
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cutting Tool ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Machining Performance ◽  
Element Analysis ◽  
Abrasive Water Jet Machining ◽  
Modern Manufacturing ◽  
Manufacturing Methods

Today, manufacturing methods are classified into two groups as conventional and non- conventional manufacturing methods. While turning, milling, and drilling are among the conventional manufacturing methods, processes such as laser, plasma, electro erosion, ultrasonic machining and water jet machining are among non-conventional, namely modern manufacturing methods. The cutting tool does not used in modern manufacturing methods. This situation is an advantage. There are some uncertainties on the machining performance of abrasive types, apart from the superior properties of the method. In this study, the effect of different abrasive types on machining performance in abrasive water jet machining (AWJM) was investigated by using computer aided finite element analysis.

scholarly journals Technological Aspects in Manufacturing of Non-Circular Gears

2020 ◽  
Vol 10 (10) ◽  
pp. 3420
Author(s):  
Tadeusz Sałaciński ◽  
Aleksander Przesmycki ◽  
Tomasz Chmielewski
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Free Form ◽  
Wire Electrical Discharge Machining ◽  
Technological Capabilities ◽  
Machine Technology ◽  
Modern Manufacturing ◽  
Manufacturing Methods

The construction and manufacture of non-circular gears is one of the most difficult issues in machine technology. Due to the limited technological capabilities of traditional machines and tools, past manufacturing methods were unable to calculate the assumed shape of the tooth line and its profile. Modern manufacturing methods using computer numerical control allow for the generation of non-circular gears with free-form tooth profiles and curvilinear teeth in their lengthwise direction. These methods are also used to manufacture internal gears. This article provides a review of the methods of machining non-circular gears and presents the results of the research on the Fellows method using a shaper cutter, as well as the wire electrical discharge machining method.

Towards the Design of Heterogeneous Compliant Mechanisms

2001 ◽  
Author(s):  
Luzhong Yin ◽  
G. K. Ananthasuresh
Keyword(s):  
Topology Optimization ◽  
Compliant Mechanisms ◽  
Design Method ◽  
Optimality Criteria ◽  
Integer Programming Problem ◽  
Material Interpolation ◽  
Peak Function ◽  
Multiple Materials ◽  
Modern Manufacturing ◽  
Manufacturing Methods

Abstract Inspired by nature’s multi-material compliant designs and the capability of modern manufacturing methods to make multi-material components without assembly, and motivated by the versatility and enhanced functionality with multi-material designs, we formalize the notion and the design of heterogeneous compliant mechanisms. In the topology optimization of compliant mechanisms, a fictitious density function is often used for material interpolation to overcome the computational difficulties encountered in the large “0-1” type integer programming problem. In this paper, we illustrate that a gradually formed continuous peak function can be used for material interpolation. One of the advantages of introducing the peak function is that multiple materials can easily be incorporated into the topology optimization without increasing the number of design variables. By using the peak function and the optimality criteria method, we synthesize compliant mechanisms with multiple materials with and without the material resource constraint. The numerical examples include the two, three, and four material designs where void is treated as one material. This new design method enables us to optimally juxtapose stiff and flexible materials in heterogeneous compliant mechanisms that can be built using a variety of modern manufacturing methods.

Direct observation of Fe-Al-Zn ternary intermetallic compound and its transformation during the early stage of hot-dip galvanizing

1993 ◽  
Vol 51 ◽  
pp. 1116-1117
Author(s):  
C. S. Lin ◽  
W. A. Chiou ◽  
M. Meshii
Keyword(s):  
Intermetallic Compound ◽  
Reaction Rate ◽  
Diffusion Rate ◽  
Early Stage ◽  
Zinc Bath ◽  
Steel Sheets ◽  
Direct Observations ◽  
Solid Iron ◽  
Iron And Zinc ◽  
Ternary Intermetallic Compound

The galvannealed steel sheets have received ever increased attention because of their excellent post-painting corrosion resistance and good weldability. However, its powdering and flaking tendency during press forming processes strongly impairs its performance. In order to optimize the properties of galvanneal coatings, it is critical to control the reaction rate between solid iron and molten zinc.In commercial galvannealing line, aluminum is added to zinc bath to retard the diffusion rate between iron and zinc by the formation of a thin layer of Al intermetallic compound on the surface of steel at initial hot-dip galvanizing. However, the form of this compound and its transformation are still speculated. In this paper, we report the direct observations of this compound and its transformation.The specimens were prepared in a hot-dip simulator in which the steel was galvanized in the zinc bath containing 0.14 wt% of Al at a temperature of 480 °C for 5 seconds and was quenched by liquid nitrogen.

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