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 |  موضوع: كتاب Gear Materials, Properties, and Manufacture - Edited by J.R. Davis Davis & Associates الخميس 17 أبريل 2014, 11:14 am | |
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أخوانى فى الله
أحضرت لكم كتاب
Gear Materials, Properties, and Manufacture
Edited by
J.R. Davis
Davis & Associates
ويتناول الموضوعات الأتية :
Contents
Preface.vii
Introduction to Gear Technology
Chapter 1 Basic Understanding of Gears 1
Gear Nomenclature 1
Types of Gears 5
Proper Gear Selection 8
Basic Applied Stresses 9
Strength 11
Gear Materials 12
Gear Manufacturing Methods 13
Heat Treating 16
Through Hardening and Case Hardening 17
Chapter 2 Gear Tribology and Lubrication 19
Gear Tribology 19
Lubrication Regimes 19
Classification of Gear Tooth Failure Modes 21
Lubrication-Related Failure 21
Elastohydrodynamic Lubrication 27
Lubricant Selection 31
Oil Lubricant Applications 32
Selection of Gear Lubricant Viscosity 33
Application of Gear Lubricants 33
Case History: Failure of a 24-Unit Speed-Increaser Gearbox 35
Gear Materials
Chapter 3 Ferrous and Nonferrous Alloys 39
Wrought Gear Steels 39
Surface-Hardening Steels 40
Through-Hardening Steels 44
Gear Steel Requirements 44
Processing Characteristics of Gear Steels 45
Bending Fatigue Strength of Carburized Steels 46
Other Properties of Interest for Carburized Steels 62
Gear Materials, Properties, and Manufacture
Other Ferrous Alloys for Gears 66
Nonferrous Alloys 72
Chapter 4 Plastics. 77
General Characteristics of Plastic Gears 77
Classification of Plastics for Gear Applications 77
Metals versus Plastics 78
Plastic Gear Materials 79
Plastic Gear Manufacture 82
Gear Manufacture
Chapter 5 Machining, Grinding, and Finishing 89
Machining Processes for Gears 90
Selection of Machining Process 98
Cutter Material and Construction 104
Speed and Feed 107
Cutting Fluids 111
Comparison of Steels for Gear Cutting 113
Computer Numerical Control (CNC) Milling and Hobbing Machines 113
Grinding of Gears 114
Honing of Gears 122
Lapping of Gears 124
Superfinishing 125
Chapter 6 Casting, Forming, and Forging 129
Casting 129
Forming 131
Forging 133
Chapter 7 Powder Metallurgy 139
Capabilities and Limitations 140
Gear Forms 142
Gear Tolerances 143
Gear Design and Tooling 144
Gear Performance 147
Quality Control and Inspection 148
Examples of P/M Gears 149
Heat Treatment of Gears
Chapter 8 Through Hardening 155
Through-Hardening Processes 155
Through-Hardened Gear Design 157
Hardness Measurement 157
Distortion of Through-Hardened Gears 158
Applications 158
Case History: Design and Manufacture of a Rack 158
Chapter 9 Carburizing 163
Gas Carburizing: Processing and Equipment 163
Quenching and Hardening 166
Tempering of Carburized and Quenched Gears 168
Recarburizing 169
Cold Treatment 169
Selection of Materials for Carburized Gears 169
Carbon Content and Case Properties 175
Core Hardness of Gear Teeth 181
Problems Associated with Carburizing 184
Heat Treat Distortion of Carburized and Hardened Gears 188
Grinding Stock Allowance on Tooth Flanks to Compensate for Distortion 201
Shot Peening of Carburized and Hardened Gears 208
Applications and Costs 211
Vacuum Carburizing 212
Chapter 10 Nitriding. 227
The Gas Nitriding Process 227
Controlled Nitriding 240
Ion Nitriding 241
Chapter 11 Carbonitriding 245
Applicable Steels and Applications 246
Depth of Case 246
Hardenability of Case 246
Quenching and Tempering 247
Distortion 247
Chapter 12 Induction and Flame Hardening 249
Induction Hardening 249
Flame Hardening 253
Failure Analysis, Fatigue Life Prediction, and Mechanical Testing
Chapter 13 Gear Failure Modes and Analysis 257
Classification of Gear Failure Modes 257
Fatigue Failures 257
Impact 271
Wear 273
Scuffing 275
Stress Rupture 276
Causes of Gear Failures 276
Conducting the Failure Analysis 277
Examples of Gear Failure Analysis 283
Chapter 14 Fatigue and Life Prediction 293
Gear Tooth Contact 293
Gear Tooth Surface Durability and Breakage 296
Life Determined by Contact Stress 297
Life Determined by Bending Stress 302
Gear Tooth Failure by Breakage after Pitting 304
Flaws and Gear Life 306
Bores and Shafts 307
Gear Materials, Properties, and Manufacture
Chapter 15 Mechanical Testing 311
Common Modes of Gear Failure 311
Stress Calculations for Test Parameters 312
Specimen Characterization 315
Tests Simulating Gear Action 316
Gear Power-Circulating (PC), or Four-Square, Tests 323
Index. 329
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