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Corrosion Testing for Metal Finishing provides metal finishers with a range of test methods as well as guidance in the choice of method for a particular finish. There is a wide range of corrosion test methods available, the majority being the subject of Standard Specifications or being brought to Standards status. With many product Standards there is a choice of test methods available to met the Standard requirements. It is hoped that the relevant choice may be obtained more easily as a result of the information published in this book. The book outlines the apparatus and procedure for each test method and discusses its applicability to different metals and finishes. Indications are given of the nature and extent of the corrosion which develops in the test. Reference is also made to the relevant Standards for each test method. The book begins with a discussion of the basic requirements for corrosion testing of finished metal products. Subsequent chapters are devoted to testing procedures such as humidity tests, salt fog tests, industrial atmosphere test, porosity test, and anti-perspiration tests.
Electroplating is the process of depositing a metal coating onto the surface of an object through the use of an electrical current. Electroplating has evolved into a highly complex process requiring a high level of precision and expertise. Phosphating is the process of converting a steel surface to iron phosphate. This is mostly used as a pretreatment method in conjunction with another method of corrosion protection. Powder coating is a finishing process in which a coating is applied electrostatically to a surface as a free-floating, dry powder before heat is used to finalize the coating. The powder can be made of any number of products: polyester, polyurethane, polyester-epoxy, straight epoxy, and acrylics. Metal finishing is the final step in the manufacturing process used to provide aesthetics and environmental protection. The electroplating market mostly is driven by the electronics and electrical industry and followed by the automotive industry. The demand for electroplating is rising rapidly from the end user industries which propel the growth of the market. The increasing demand for durable metals and growing use of adaptable manufacturing processes for a wide range of applications in the automotive, aerospace & defense, and electrical & electronics industries are likely to boost the demand for electroplating. With the growing demand for high-performance automobile components having excellent resistance to corrosion to enhance the appearance of exterior automobile parts, such as emblems, door handles, hood ornaments, and wheel rims, is driving the demand for electroplating and likely to continue owing to the increasing automobiles production in Asia-Pacific and other emerging economies in the Middle East & Africa. The zinc-nickel electroplating is one of the popular methods of electroplating in the automotive industry. The book cover various aspects related to different Electroplating, Phosphating, Powder Coating and Metal Finishing with their manufacturing process and also provides contact details of machinery suppliers with equipment photographs and plant layout. A total guide to manufacturing and entrepreneurial success in one of today’s complete process of electroplating to metal finishing in industry. This book is one-stop guide to one of the fastest growing electroplating, phosphating, powder coating and metal finishing industry, where opportunities abound for manufacturers, retailers, and entrepreneurs. The book serves up a feast of how-to information, from concept to purchasing equipment.
This practical handbook provides an introduction to all aspects of decorative, protective and engineering finishes applicable to aluminium. Descriptions of the processes concerned, including properties and methods of application, their benefits and limitations, are given, making this manual a useful asset to managers, technologists and students.
Metallic Coatings for Corrosion Control describes how metal coatings can control corrosion, the selection process, preparations, suitability, limitations, and how coatings are applied. The book reviews the nature of corrosion, the forms of corrosion (even general, uneven general, even local, narrow pits, cracking), electrochemical mechanism of corrosion, effects of discontinuities in coatings, and economic considerations of coating. It describes pretreatments (such as removal of superficial corrosion, abrading, polishing), the coating processes (molten or spray application, chemical or vapor deposition, diffusion coating), and also coating performance. The rate of corrosion on different metals such as aluminum, cadmium, copper, gold, silver, or tin depends on the presence of an oxide film, solubility, electrodeposits, or tarnish blackening. Gold is resistant to corrosion and tarnishing except in aqua regia. The book recommends the following when the engineer is selecting a type of coating: the environment where it is exposed, the service life required, the substrate material, shape or size of the article, its decorative appeal, mechanical factors, and if there will be any subsequent fabrication. The book is useful for students of civil, structural, and mechanical engineering. Designers and technicians of industrial machinery or maritime equipment will also profit from reading it.
The objective of this second edition remains the discussion of the many diverse roles of electrochemical technology in industry. Throughout the book, the intention is to emphasize that the applications, though extremely diverse, all are on the same principles of electrochemistry and electrochemical engineer based ing. Those familiar with the first edition will note a significant increase in the number of pages. The most obvious addition is the separate chapter on electrochemical sensors but, in fact, all chapters have been reviewed thoroughly and many have been altered substantially. These changes to the book partly reflect the different view of a second author as well as comments from students and friends. Also, they arise inevitably from the vitality and strength of electrochemical technology; in addition to important improvements in tech nology, new electrolytic processes and electrochemical devices continue to be reported. In the preface to the first edition it was stated: . . . the future for electrochemical technology is bright and there is a general expectation that new applications of electrochemistry will become economic as the world responds to the challenge of more expensive energy, of the need to develop new materials and to exploit different chemical feedstocks and of the necessity to protect the environment. The preparation of this second edition, seven years after these words were written, provided an occasion to review the progress of industrial electro chemistry.