surface treatment seminar's introduction

1. ahmadkhan_99@hotmail.com
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2. • Introduction
Process Design- OEM Perspective
Process Operation – Operator Perspective
Process Qualification Concerns
Product Quality Concerns
How to Improve Process Quality
Focus Point – Process Criticalities
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3. • Seminar Overview
Surface Treatment – An Overview
Pre-Processes & Criticalities
Plating Processes & Criticalities
Post Processes & Criticalities
Review of Some Existing Plating Processes
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4. Processes Design- OEM Perspective
A process is designed after extensive studies,
research work verified by experiments
Thus; each and every step as described by the
OEM has its own importance and implications;
may it be a simple / repetitive step e.g too
many hot-wash, cold-wash, blowing dry air or
ensuring continuity of some steps in the
process
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5. Processes Operation – Operator Perspective
Process operators take the process as a set of certain
steps to be performed with a sole concern of
acceptance / rejection of out-coming products
Operators, over a period of time, based on their
observations / experience start taking shortcuts /
omitting process steps, which they think, do not have
any effect on the product &
Their assumptions remain true due to various reasons
like non-detection of underlying adverse effects,
incapacitation of process control parameters being
monitored to show the effects 5

6. Process Qualification Concerns
Specifications/requirements of process qualification
as specified by the OEM be met/ensured/monitored
Product Quality Concerns
Is the product coming out of a process a Quality
Product?
Who/How a product will be defined as Quality
Product. Answer is “ in our case Products meeting
OEM’s requirements & in general Products meeting
User’s requirements” 6

7. How to Improve Process/Product Quality
Process Qualification Implementation
Intelligent Embedding of Quality Control Element
Knowing What, Why & How of the Process
Process Criticalities' Awareness
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8. Focus Point – Process Criticalities
Process Criticalities can only be understood / ensured
through
Knowing What, Why & How of the Process
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9. Surface Treatment An Overview
Finishing and Polishing
Coatings
Deposition
Organic Coatings
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10. Pre-Processes Surface Preparation
Mechanical Preparation
Blast Finishing
Shot Peening
Mass Finishing
Polishing
Buffing
Chemical Preparation
Pre-process Baking
Preheating
Effects of Discontinuity in process
Effects of Poor Cleaning process 10

11. Plating Process & Criticalities
What & Why of Elctroplating
Factors Influencing Electro Deposition
Current density
Cathode Efficiency
Agitation
Bath composition & Solution concentration
Water Requirement
The presence of impurities & Filtration
Hydrogen Embrittlement and its Effects
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12. Post Processes & Criticalities
Drying with Air (Hot/Cold)
Post Process Baking
Hot / Cold Water Rinse
Heat Treatment
Inspection
Quality Control
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13. Review of Some Existing Plating Processes
Lead – Indium
Zinc Plating
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