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Handbook Of Molded Part Shrinkage And Warpage

Handbook Of Molded Part Shrinkage And Warpage
Author: Jerry Fischer
Publisher: William Andrew
ISBN: 1455730572
Size: 50.59 MB
Format: PDF, Kindle
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How easy life would be if only moldings were the same size and shape as the mold. But they never are, as molders, toolmakers, designers and end users know only too well. Shrinkage means that the size is always different; warpage often changes the shape too. The effects are worse for some plastics than others. Why is that? What can you do about it? The Handbook of Molded Part Shrinkage and Warpage is the first and only book to deal specifically with this fundamental problem. Jerry Fischer’s Handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and explains why you never can have a single ‘correct’ shrinkage value. It goes on to demonstrate how to alleviate the problem through careful design of the molded part and the mold, and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the Handbook gives you the data you need to work with. . Authoritative and rooted in extensive industrial experience, the expert guidance contained in this handbook offers practical understanding to novices, and new insights to readers already skilled in the art of injection molding and mold making. Contains the answers to common problems and detailed advice on how to control mold and post-mold shrinkage and warpage. Case Studies illustrate and enrich the text; Data tables provide the empirical data that is essential for success, but hard to come by.
Handbook of Molded Part Shrinkage and Warpage
Language: en
Pages: 292
Authors: Jerry Fischer
Categories: Technology & Engineering
Type: BOOK - Published: 2012-12-31 - Publisher: William Andrew
How easy life would be if only moldings were the same size and shape as the mold. But they never are, as molders, toolmakers, designers and end users know only too well. Shrinkage means that the size is always different; warpage often changes the shape too. The effects are worse for some plastics than others. Why is that? What can you do about it? The Handbook of Molded Part Shrinkage and Warpage is the first and only book to deal specifically with this fundamental problem. Jerry Fischer’s Handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and explains why you never can have a single ‘correct’ shrinkage value. It goes on to demonstrate how to alleviate the problem through careful design of the molded part and the mold, and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the Handbook gives you the data you need to work with. . Authoritative and rooted in extensive industrial experience, the expert guidance contained in this handbook offers practical understanding to novices, and new insights to
Handbook of Molded Part Shrinkage and Warpage
Language: en
Pages: 265
Authors: Jerry M. Fischer
Categories: Plastics
Type: BOOK - Published: 2003 - Publisher:
The handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and tells why you never can have a single """"correct"""" shrinkage value. But that's not all. The handbook shows how to alleviate the problem by careful design of the molded part and the mold and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the handbook gives you the data you need to work with. This is the most complete c.
Handbook of Molded Part Shrinkage and Warpage
Language: en
Pages: 263
Authors: Jerry Fischer
Categories: Technology & Engineering
Type: BOOK - Published: 2004-01-14 - Publisher: William Andrew
The handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and tells why you never can have a single ""correct"" shrinkage value. But that's not all. The handbook shows how to alleviate the problem by careful design of the molded part and the mold and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the handbook gives you the data you need to work with. This is the most complete collection of shrinkage data ever made and includes an extensive compilation of hard-to-find multi-point information on how processing, part design, mold design, material and post mold treatment affect the part's final dimensions. Manufacturers' figures for thousands of grades, along with an exhaustive search of magazines, journals, conference papers, books, web sites and brochures combine to make this a powerful resource. A lot depends on a dimensionally correct molding. Quality, speed to market, profit margins for the molder and toolmaker, the efficiency of secondary and assembly operations, reputation; all these are on the line. The Mold Shrinkage and Warpage Handbook is the book for
Injection Molding Handbook
Language: en
Pages: 1457
Authors: Dominick V. Rosato, Donald V. Rosato, Marlene G. Rosato
Categories: Science
Type: BOOK - Published: 2000 - Publisher: Springer Science & Business Media
Provides reference information concerning the injection molding operation and each of its aspects. It examines considerable technological advancements, especially those in computer methods, that have been made since the second edition was published.
Plastics Process Analysis, Instrumentation, and Control
Language: en
Pages: 416
Authors: Johannes Karl Fink
Categories: Technology & Engineering
Type: BOOK - Published: 2021-03-09 - Publisher: John Wiley & Sons
This book focuses on plastics process analysis, instrumentation for modern manufacturing in the plastics industry. Process analysis is the starting point since plastics processing is different from processing of metals, ceramics, and other materials. Plastics materials show unique behavior in terms of heat transfer, fluid flow, viscoelastic behavior, and a dependence of the previous time, temperature and shear history which determines how the material responds during processing and its end use. Many of the manufacturing processes are continuous or cyclical in nature. The systems are flow systems in which the process variables, such as time, temperature, position, melt and hydraulic pressure, must be controlled to achieve a satisfactory product which is typically specified by critical dimensions and physical properties which vary with the processing conditions. Instrumentation has to be selected so that it survives the harsh manufacturing environment of high pressures, temperatures and shear rates, and yet it has to have a fast response to measure the process dynamics. At many times the measurements have to be in a non-contact mode so as not to disturb the melt or the finished product. Plastics resins are reactive systems. The resins will degrade if the process conditions are not controlled. Analysis of
The Effect of Long Term Thermal Exposure on Plastics and Elastomers
Language: en
Pages: 296
Authors: Laurence W. McKeen
Categories: Technology & Engineering
Type: BOOK - Published: 2013-11-20 - Publisher: William Andrew
This reference guide brings together a wide range of essential data on the effect of long term thermal exposure on plastics and elastomers, enabling engineers to make optimal material choices and design decisions. The data is supported by explanations of how to make use of the data in real-world engineering contexts. High heat environments are common in automotive, oil and gas, household appliances, coatings, space and aeronautics and many more end uses. As a result, thermal stability data are critically important to engineers designing parts particularly that replace metals, work that is common today as they look for ways to reduce weight. The data tables in this book enable engineers and scientists to select the right materials for a given product or application across a wide range of sectors. Several polymer classes are covered, including polyolefins, polyamides, polyesters, elastomers, fluoropolymers, biodegradable plastics and more, saving readers the need to contact suppliers. The book also includes introductory sections to provide background on plastic/polymer chemistry and formulation and plastic testing methods, providing the knowledge required to make best use of the data. Essential data and practical guidance for engineers and scientists working with plastics for use in high temperature environments Includes introductory
Fluoroelastomers Handbook
Language: en
Pages: 584
Authors: Jiri George Drobny
Categories: Technology & Engineering
Type: BOOK - Published: 2016-04-27 - Publisher: William Andrew
Fluoroelastomers Handbook: The Definitive User's Guide, Second Edition is a comprehensive reference on fluoroelastomer chemistry, processing technology, and applications. It is a must-have reference for materials scientists and engineers in the automotive, aerospace, chemical, chemical process, and power generation industries. Covering both physical and mechanical properties of fluoroelastomers, it is useful in addressing daily challenges in the use of these materials, as well as the challenges posed in long-term research and development programs. Since the publication of the previous edition in 2005, many new findings and developments in chemistry, technology, and applications of fluoroelastomers have taken place. This is the only book with updated information on the manufacturing process, cross-linking chemistry and the formulation of compounds, as well as mixing, processing, and curing methods. A fully revised chapter is included on applications and examples of fluoroelastomer compounds. Safety, hygiene, and disposal standards and guidelines have been updated, and a new chapter has been added to discuss new developments and current trends, helping engineers and materials scientists stay ahead of the curve. Presents the only definitive reference work on fluoroelastomer chemistry, processing technology, and applications Helps engineers and materials scientists with the day-to-day challenges of using fluoroelastomers, as well as long-term
Fractography in Failure Analysis of Polymers
Language: en
Pages: 252
Authors: Michael Hayes, Dale Edwards, Andy Shah
Categories: Technology & Engineering
Type: BOOK - Published: 2015-05-08 - Publisher: William Andrew
Fractography in Failure Analysis of Polymers provides a practical guide to the science of fractography and its application in the failure analysis of plastic components. In addition to a brief background on the theory of fractography, the authors discuss the various fractographic tools and techniques used to identify key fracture characteristics. Case studies are included for a wide range of polymer types, applications, and failure modes, as well as best practice guidelines enabling engineers to apply these lessons to their own work. Detailed images and their appropriate context are presented for reference in failure investigations. This text is vital for engineers who must determine the root causes of failure when it occurs, helping them further study the ramifications of product liability claims, environmental concerns, and brand image. Presents a comprehensive guide to applied fractography, enabling improved reliability and longevity of plastic parts and products Includes case studies that demonstrate material selection decisions and how to reduce failure rates Provides best practices on how to analyze the cause of material failures, along with guidelines on improving design and manufacturing decisions
Fluoroelastomers Handbook
Language: en
Pages: 359
Authors: Albert L. Moore, Jiri George Drobny
Categories: Technology & Engineering
Type: BOOK - Published: 2006-01-14 - Publisher: Taylor & Francis
This is a must-have reference for materials scientists and engineers in the automotive, aerospace, chemical, chemical process, and power generation industries. Fluoroelastomers are growing as products of choice for critical components such as O-rings, hoses and seals in hostile fluid and temperature conditions.
Handbook of Metal Injection Molding
Language: en
Pages: 656
Authors: Donald F. Heaney
Categories: Technology & Engineering
Type: BOOK - Published: 2019-05-21 - Publisher: Woodhead Publishing
Metal injection molding combines the most useful characteristics of powder metallurgy and plastic injection molding to facilitate the production of small, complex-shaped metal components with outstanding mechanical properties. Handbook of Metal Injection Molding, Second Edition provides an authoritative guide to this important technology and its applications. Building upon the success of the first edition, this new edition includes the latest developments in the field and expands upon specific processing technologies. Part one discusses the fundamentals of the metal injection molding process with chapters on topics such as component design, important powder characteristics, compound manufacture, tooling design, molding optimization, debinding, and sintering. Part two provides a detailed review of quality issues, including feedstock characterisation, modeling and simulation, methods to qualify a MIM process, common defects and carbon content control. Special metal injection molding processes are the focus of part three, which provides comprehensive coverage of micro components, two material/two color structures, and porous metal techniques. Finally, part four explores metal injection molding of particular materials, and has been expanded to include super alloys and precious metals. With its distinguished editor and expert team of international contributors, the Handbook of Metal Injection Molding is an essential guide for all those involved in