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 |  موضوع: كتاب Fundamentals of Die Casting Design الإثنين 07 يناير 2013, 4:06 pm | |
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Fundamentals of Die Casting Design
Genick Bat-Meir, Ph. D.
ويتناول الموضوعات الأتية :
CONTENTS
I BASIC SCIENCE 1
1 Introduction
1.1 The importance of reducing production costs . . .
1.2 Designed/Undesigned Scrap/Cost
1.3 Linking the Production Cost to the Product Design
1.4 Historical Background
1.5 Numerical Simulations
1.6 “Integral" Models
1.7 Conclusion
2 Basic Fluid Mechanics
2.1 Introduction
2.2 What is fluid? Shear streass
2.2.1 Thermodynamics and mechanics concepts
Thermodynamics
Control Volume, c.v
Energy Equation
2.2.4 Momentum Equaton
2.2.5 Compressible flow .
3 Dimensional Analysis
3.1 Introduction
3.2 The processes in die casting
3.2.1 Filling the shot sleeve
3.2.2 Shot sleeve
3.2.3 Runner system
3.2.4 Die cavity
3.2.5 Intensification period and after
XIXCONTENTS
3.3 Special topics
3.3.1 Is the flow in die casting is turbulent?
Additional note on numerical simulation
3.3.2 Dissipation effect on the temperature rise
3.3.3 Gravity effects
3.4 Estimates of the time scales in die casting
3.4.1 Utilizing semi dimensional analysis for characteristic time
Miller’s approach
Present approach
3.4.2 The ratios of various time scales
3.5 Similarity applied to Die cavity
3.5.1 Governing equations
3.5.2 Design of Experiments
3.6 Summary of dimensionless numbers
3.7 Summary
3.8 Questions
4 Fundamentals of Pipe Flow
4.1 Introduction
4.2 Universality of the loss coefficients
4.3 A simple flow in a straight conduit
4.3.1 Examples of the calculations
4.4 Typical Components in the Runner andVent Systems
4.4.1 bend
4.4.2 Y connection
4.4.3 Expansion/Contraction
4.5 Putting it all to Together
4.5.1 Series Connection
4.5.2 Parallel Connection
5 Flow in Open Channels
5.1 Introduction . . . .
5.2 Typical diagrams . .
5.3 Hydraulic Jump . .
II DIE CASTING DESIGN 59
6 Runner Design
6.1 Introduction
6.1.1 Backward Design
6.1.2 Connecting runner seqments
6.1.3 Resistance
What have your membership dues
, 2000, by Dr. Bar-Meir done for you today? plagiarism?CONTENTS
7 pQ 2 Diagram Calculations
7.1 Introduction
7.2 The “common” pQ 2 diagram
7.3 The validity of the “common” diagram
7.3.1 Is the “common” model valid?
7.3.2 Are the trends reasonable?
Plunger area/diameter variation
Gate area variation
7.3.3 Variations of the Gate area, 7L3
7.4 The reformed pQ 2 diagram
7.4.1 The reform model
7.4.2 Examining the solution
The gate area effects
General conclusions from example 7.4.2 . . .
The die casting machine characteristic effects
Plunger area/diameter effects
Machine size effect
Precondition effect (wave formation)
7.4.3 Poor design effects
7.4.4 Transient effects
7.5 Design Process
7.6 The Intensification Consideration
7.7 Summary
7.8 Questions
8 Critical Slow Plunger Velocity
8.1 Introduction
8.2 The “common” models . .
Garber’s model
Brevick’s Model
The square shot sleeve . . . .
8.2.3 Brevick’s circular model . . . .
8.2.4 Miller’s square model
The validity of the “common” models
8.3.1 Garber’s model
8.3.2 Brevick’s models
square model
Improved Garber’s model . . .
8.3.3 Miller’s model
8.3.4 EKK’s model (numerical model)
The Reformed Model
8.4.1 The reformed model
8.4.2 Design process
Summary
Questions
What have your membership dues
XXI done for you today? plagiarise? , 2000, by Dr. Bar-MeirCONTENTS
9 Venting System Design 109
9.1 Introduction
9.2 The “common” models .
9.2.1 Early (etc.) model
9.2.2 Miller ’s model . .
9.3 General Discussion . . . .
9.4 The Analysis
9.5 Results and Discussion .
9.6 Summary
9.7 Questions
10 Clamping Force Calculations 119
III MORE INFO: Appendixes 121
A What The Establishment’s Scientists Say
A.l Summary of Referee positions
A.2 Referee 1 (from hand written notes) .
A.3 Referee 2
A.4 Referee 3
B My Relationship with Die Casting Establishment 135
C Density change effects 151
D Fanno Flow
D.l Introdcion
E Reference 159
What have your membership dues
, 2000, by Dr. Bar-Meir done for you today? plagiarism? XXII
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