Cathodic Electro Deposition

Good Essays
Electrodeposition

Coating

Process

for Automobile

Bodies*

By Yoshiaki 0YABU,** Nobuo FURUNO,*** Yoji HIRASAWA*** and Hiroshi OMORI ****
Synopsis The earlier electrodeposition processwas mainlypursuitedfor the quality control in terms of mass production. However, the coating efficiency was picked up to be a serial problemfrom a standpoint of the harmony between natural circumstancesand human's living-life conditions and the recovery usage of the paint was earnestlysearched. This trend led to the development in various technicalfields. The second impetus on further improvementof electrodeposition paint was due to oil crisis in 1973. The new technology relating to save-energy was developed. In thepaint industries, the further improvedanti-corrosive performance was strongly demanded. This demand also involvedthe developmentof new materials for automobile bodies and even the design of bodiesstructure. In this report, the introduction of electrodeposition process into automobile industries in Japan is hystrically reviewedand the electrodeposition mechanismand the mechanism which deposited materials from the coating film are briefly explained. As the demandfor anti-corrosiveperformance is increased, the coating system in which the anodic oxidation and the dissolutionfrom the object metal can not occur, was aimed and recentlyit was rapidly accepted as the superior system. On the other hand, there is an oppositeopinionfor this trend on the basis of the metal analysis detectedin the deposited film. The characteristics of cationic electrodeposition,in particular, the superior corrosion resistance with regard to the metal dissolution in the wholeelectrodeposition processis explained. In Chapter III, throwingpower which is characteristic for electrodeposition processis described. It is referred that throwingpower is not necessarily determined by the paint performance. Even the electrodeposition coating system, the areas into which the paint liquid does not

You May Also Find These Documents Helpful

  • Powerful Essays

    Cathodic Protection

    • 3887 Words
    • 16 Pages

    CATHODIC PROTECTION P E FRANCIS CONTENTS 1 2 3 INTRODUCTION............................................................................................................2 PRINCIPLES OF CATHODIC PROTECTION..........................................................3 METHODS OF APPLYING CATHODIC PROTECTION........................................5 3.1 3.2 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 IMPRESSED CURRENT..........................................................................................5 SACRIFICIAL…

    • 3887 Words
    • 16 Pages
    Powerful Essays
  • Good Essays

    Electro Industries

    • 1492 Words
    • 6 Pages

    Case Introduction Electro Industries are a large diversified manufacturer of computer systems, industrial electronics, electronic components and consumer electronics and a supplier of a broad range of services. Problems confronting Electro • Electro has incurred its first loss for the company in 15 years, despite sales growth of 20%. The net loss in 1974 was $5.7 million on sales of $875 million • Operational expenses and administrative expenses soared. • Stock price is low from 1968 till…

    • 1492 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    Cathodic Protection System

    • 4461 Words
    • 18 Pages

    K.C. LTD. MARINE IMPRESSED CURRENT CATHODIC PROTECTION SYSTEM ICCP DOCUMENT REV(E) : 14/04/06 NOTES : a) Do not attempt to service or readjust the system operating levels without first reading and understanding this Manual. b) The system operates at low d.c. voltage levels and may be severely damaged by high voltage test equipment such as a 500V Megger. Read the relevant section in this manual before carrying out any tests. c) There is no need of protective current as far as ship is well enclosed…

    • 4461 Words
    • 18 Pages
    Powerful Essays
  • Good Essays

    Analysis of Deposition

    • 372 Words
    • 2 Pages

    Pontormo, DEPOSITION, 1525-1528 I choose the painting Deposition, by Pontormo, as the work I would like to analyze for the first assignment. It shows a vivid scene when Jesus just had been removed from the cross. Pontormo painted almost every figure with desperate and painful eyes. And, actually, those emotions indeed touch viewer’s heart. I would like to start analyze this painting with lines and internal composition. There are more than ten figures in this painting; thus, the lines are countless…

    • 372 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Electro chemistry

    • 1846 Words
    • 8 Pages

    Section 10.10 Balancing Oxidation–Reduction Equations ENERGY General Chemistry 2 (Chem 112) Return to TOC Copyright © Cengage Learning. All rights reserved 1 Section 10.10 Balancing Oxidation–Reduction Equations UNIT 1: ENERGY MODULE 1: ELECTROCHEMICAL ENERGY MODULE 2: NUCLEAR ENERGY MODULE 3: FUELS Return to TOC Copyright © Cengage Learning. All rights reserved 2 Section 10.9 Oxidation–Reduction Reactions Redox Reactions • Reactions in which one…

    • 1846 Words
    • 8 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Electro 8

    • 421 Words
    • 2 Pages

    ELECTRO-TECHNOLOGY (EEE111) EXPERIMENT 8 DIRECT-ON-LINE (D.O.L) STARTER OBJECTIVES 1. To understand the function of contactor, push button, switches and overload protective devices used in direct-on-line starter. 2. To understand the wiring diagram, the inspection and the testing method of the D.O.L starter 3. To understand the steps and safety to power up the signal-phase motor by the D.O.L starter LIST OF REQUIREMENTS EQUIPMENT 1. Insulation tester COMPONENTS 1 Wire…

    • 421 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Electro Inc

    • 1148 Words
    • 5 Pages

    Electro Inc. Case Analysis Who: Electro Inc.’s executive assistant When: 1987 Where: Calgary, Canada Electro Inc. is fast developing company which strive to build a high tech wonder company image, it also has clear market segmentation and specific strategies to penetrate this segment. However, in recent report, the company’s financial statement indicates that the company experience financial difficulties at this moment. Some managers believe that this difficulty is largely due to two projects…

    • 1148 Words
    • 5 Pages
    Good Essays
  • Better Essays

    Molecular Vapor Deposition

    • 1892 Words
    • 8 Pages

    properties. The traditional coating deposition methods consist of a set of sequential wet baths. The wet processing method is complex and limits the ability of molecular coating in many MEMS applications. The use of liquid precursors has extremely limited bath life, which cause the method to be highly expensive and have low product ability. In this paper a new surface coating technique a new surface coating technique will be discussed, which is called Molecular Vapor Deposition (MVD). This new method has…

    • 1892 Words
    • 8 Pages
    Better Essays
  • Satisfactory Essays

    Physical Vapor Deposition

    • 544 Words
    • 3 Pages

    Physical vapor deposition PHYSICAL METHODS A physical deposition process consists of three steps: 1. Emission of the particles from a source 2. Their transport to the substrate 3. The condensation on the substrate Physical vapor deposition  a process by which a thin film of material is deposited on a substrate according to the following sequence of steps: 1) the material to be deposited is converted into vapor by physical means; 2) the vapor is transported across a region of low pressure…

    • 544 Words
    • 3 Pages
    Satisfactory Essays
  • Powerful Essays

    Electro Learning

    • 31368 Words
    • 126 Pages

    INTRODUCTION In the recent years, technology continues to evolve and improves its capability affecting every individual’s daily routines. Technology has impacted the different facets of life and certainly changed and redefined the way we live (Oak, 2011). One of the most common technologies used by people around the globe is computer. According to International Telecommunications Union or ITU, in 2010, the ratio of Filipino computer users over the Philippines’ population results in 29,700,000…

    • 31368 Words
    • 126 Pages
    Powerful Essays