EL3005 Industrial Metal Finishing Syllabus:
EL3005 Industrial Metal Finishing Syllabus – Anna University Regulation 2021
OBJECTIVE:
To enable the students
• To differentiate between the electroplating and anodizing process and
• To compare the various engineering aspects and electroplating process.
UNIT I ELECTROPLATING OF METALS
Fundamental principles – Faradays laws, mechanism of deposition, surface preparation for electroplating, electroplating of copper, nickel, chromium, zinc, tin and precious metals (gold and silver)
UNIT II EVALUATION & TESTING
Measurements of pH, specific gravity, surface tension, conductivity, throwing power and current efficiency of electroplating electrolytes. Testing of Electro deposits for thickness, adhesion, stress, corrosion, porosity, hardness, ductility and solderability. The use of Hull-cell in plating.
UNIT III ELECTROPLATING OF ALLOYS AND OTHER PLATING METHODS
Principles of alloy deposition, barrel finishing and plating, electroforming of copper and nickel, electroless deposition of copper and nickel, brush plating, continuous plating, PCB plating.
UNIT IV ENGINEERING ASPECTS
Equipment selection, rectifier, pre-treatment equipment-mechanical – chemical, automation, flooring, materials for tanks and linings, ventilation, bus bar, filtration and purification, agitation, heating and cooling arrangement for electrolytes.
UNIT V ANODIZING
Anodizing of aluminium, principles, pre-treatment, jigging. Sulphuric acid process, operating conditions for decorative and protective anodizing, effect of impurities, analysis for free acid and aluminium content, chromic acid process, operating conditions, effect of impurities, coloring of anodized aluminium with organic dyes. Sealing in hot water and dichromate solution. Testing of anodic film thickness by Eddy current method and stripping method, coating weight – coating ratio.
TOTAL: 45 PERIODS
OUTCOMES:
• Understand the fundamental principles of electroplating of metals
• Understand evaluation & testing of electroplating process
• Understand electroplating of alloys and other plating methods
• Acquire knowledge on engineering aspectsof electroplating techniques
• Acquire knowledge on anodizing concepts
TEXT BOOKS:
1. F.A.Lowenheim, “Modern Electroplating”, John Wiley and Sons INC. USA, 3rd Edition, 1974.
2. N.V.Parthasarathy, “Practical Electroplating Handbook”, Prentice Hall Inc., 1989
REFERENCES:
1. L.J.Durney, “Electroplating Engineering Handbook”, V Edition,Van Nostrand Reinhold, New York, 1984.
2. V.F. Henley, “Anodic Oxidation of Metals”, Pergamon ,1st edition, 1982