Marine Welding Technology detail syllabus for Marine Engineering (122), M scheme is taken from TNDTE official website and presented for diploma students. The course code (32783), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below.
For all other marine 6th sem syllabus for diploma m scheme tndte you can visit Marine 6th Sem Syllabus for Diploma M Scheme TNDTE Subjects. For all other ELECTIVE – II THEORY subjects do refer to ELECTIVE – II THEORY. The detail syllabus for marine welding technology is as follows.
Rationale:
Diploma holders in marine engineering should have enough knowledge about different welding processes and different types of welding equipments. Special welding processes are used in ships where conventional methods cannot be used. A knowledge about welding of different metals is necessary. The welder should judge the applicability of the weld.
Objectives:
At the end of the study of V Semester the student will be able to
- Understand about different types of welding processes and equipments.
- Know about the special welding process.
- Study about metallurgy of welding.
- Acquire broader ideas about weldability of ferrous and non ferrous metals.
- Understand about welding economy and applications.
Detailed Content:
Unit I
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Unit II
Special Welding Processes
Submerged arc welding -TIG welding -MIG welding – resistance welding -spot welding – CO2 welding – Electro slag welding -plasma arc welding -Under water welding – Principle of operation -equipment – merits and demerits – applications – Ultrasonic welding – explosive welding – atomic hydrogen welding – electron beam welding – laser beam welding -definition, concept principle of operation and applications.
Unit III
Metallurgy of Welding
Welding arc – Heat flow and temperature distribution in and around weld metal – temperatures zones – temperatures gradient cooling rates -metallurgical effects of welding-weld metal solidification – absorption of gases by welds and their effects- gas metal reactions – porosity in welds -Isothermal contours for localised heating – thermal effects of welding on parent metal – structure of fusion weld deposits in mild steel – heat affected zones – grain size control – corrosion of welds, weld decay, dilution -metallurgy of soldering and brazing.
Unit IV
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Unit V
Welding Economy and Applications
Principles of sound welding design of ship construction “V” and “U” preparation – advantages of “U” preparation when compared to “V” preparation economics of welding design – cost of welding design -Welding Economy – Cost of welding by different processes and selection of welding processes – Principles governing design of good welding jigs and fixtures -design of pressure vessels for welding – design of static loaded structures, plate girders, beam brackets for welding. Defects in welds -causes and remedies – welding distortion – control of welding distortion.
Text Books:
- Workshop technology I and II by Hajra Choudary
For detail syllabus of all other subjects of BE Marine, M scheme do visit Marine 6 syllabus for M Scheme.
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