# Theory of Production Processes - Institution: IIT Roorkee - Department: Mechanical Engineering - Teacher: Prof. P. K. Jha - Level: Undergraduate - Language: English - Subjects: Engineering - Source: [NPTEL](https://nptel.ac.in/courses/112107239) - Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.) - Syllabus: [at the source](https://nptel.ac.in/courses/112107239) - Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words) The course focuses on understanding the science behind technology of primary production processes namely casting, forming and welding. Conventionally, the courses on manufacturing processes deal with study of operational procedures. However, it is desirable to know how any process occurs and the products are finally manufactured, the basic principles behind these processes are required to be highlighted. The course will make the students aware with the theoretical aspects of the different manufacturing processes mentioned above. The course has been divided into three sections namely casting, forming and welding, each being covered in 4 weeks of time. The underlying principles of solidification, fluidity, gating, risering, melting etc. will be covered in casting section whereas mechanics of metalworking, analysis of different metal working processes will be covered in the second section i.e. forming. In the third section i.e. welding, principles of welding processes, thermal effects, weldability etc. will be covered. The course will enable the students be conversant with working principles so that they can use the knowledge gained towards increasing the productivity of manufacturing industries in the long run. Prerequisites: Introduction to manufacturing technology or manufacturing processes. ## Lectures 1. [Introduction to Theory and Practice of Casting](https://invisiblenetwork.ai/learn/nptel/112107239/c4c5198a059a) (YouTube) 2. [Theory of Solidification: Cooling Curves](https://invisiblenetwork.ai/learn/nptel/112107239/df895892344e) (YouTube) 3. [Solidification of Pure Metals and Alloys](https://invisiblenetwork.ai/learn/nptel/112107239/e62350f3b0df) (YouTube) 4. [Factors Affecting Solidification Process](https://invisiblenetwork.ai/learn/nptel/112107239/e344b48a1bc5) (YouTube) 5. [Fluidity of Liquid Metals](https://invisiblenetwork.ai/learn/nptel/112107239/3c4742b61121) (YouTube) 6. [Technology of Patternmaking: Pattern Materials](https://invisiblenetwork.ai/learn/nptel/112107239/cf576c821999) (YouTube) 7. [Patternmaking: Types of Pattern & Allowances](https://invisiblenetwork.ai/learn/nptel/112107239/5c00fa8989e4) (YouTube) 8. [Molding sand Ingredients and Sand Testing Methods](https://invisiblenetwork.ai/learn/nptel/112107239/0529364ee986) (YouTube) 9. [Sand Molding Methods](https://invisiblenetwork.ai/learn/nptel/112107239/19daf11d8a11) (YouTube) 10. [Coremaking: Properties and Types of Cores](https://invisiblenetwork.ai/learn/nptel/112107239/fc53ff237d68) (YouTube) 11. [Gating System Design: Types of Gates](https://invisiblenetwork.ai/learn/nptel/112107239/5bbd4702d5a1) (YouTube) 12. [Gating System Design: Pouring Time Calculation](https://invisiblenetwork.ai/learn/nptel/112107239/ef65d11e77b4) (YouTube) 13. [Introduction to Riser Design](https://invisiblenetwork.ai/learn/nptel/112107239/39757066fafe) (YouTube) 14. [Risering Methods](https://invisiblenetwork.ai/learn/nptel/112107239/27694044b318) (YouTube) 15. [Problem Solving on Gating Design and Risering Methods](https://invisiblenetwork.ai/learn/nptel/112107239/6ae8601c5f22) (YouTube) 16. [Theory of Melting: Types of Furnaces](https://invisiblenetwork.ai/learn/nptel/112107239/be72652d7097) (YouTube) 17. [Melting and Production of Iron Castings](https://invisiblenetwork.ai/learn/nptel/112107239/8e4e7d7101a8) (YouTube) 18. [Production of Steel and Non-Ferrous Castings](https://invisiblenetwork.ai/learn/nptel/112107239/275cf27a949c) (YouTube) 19. [Casting Design Considerations](https://invisiblenetwork.ai/learn/nptel/112107239/bfc6a7392173) (YouTube) 20. [Casting Defects: Types, Causes and Remedies](https://invisiblenetwork.ai/learn/nptel/112107239/49842b43e645) (YouTube) 21. [Concept of Stress and Strain, Elastic and Plastic Behavior](https://invisiblenetwork.ai/learn/nptel/112107239/edf6a6ee86bb) (YouTube) 22. [State of Stress in Two and Three Dimensions, Mohr's Circle](https://invisiblenetwork.ai/learn/nptel/112107239/14b6b2553f52) (YouTube) 23. [Description of Strain at a Point](https://invisiblenetwork.ai/learn/nptel/112107239/fbe335174d52) (YouTube) 24. [Mean and Deviator Stresses, Elastic Stress Strain Relationships](https://invisiblenetwork.ai/learn/nptel/112107239/7b99481be88b) (YouTube) 25. [Theory of Plasticity: True Stress and True Strain, Flow Curve](https://invisiblenetwork.ai/learn/nptel/112107239/38122a317b88) (YouTube) 26. [Yield Criteria for Ductile Materials](https://invisiblenetwork.ai/learn/nptel/112107239/67750dfa6ca6) (YouTube) 27. [Flow Rules, Plastic Stress Strain Relationships](https://invisiblenetwork.ai/learn/nptel/112107239/2fa95975044a) (YouTube) 28. [Classification of Metal Working Processes](https://invisiblenetwork.ai/learn/nptel/112107239/2c7c35d62544) (YouTube) 29. [Mechanics of Metal Working](https://invisiblenetwork.ai/learn/nptel/112107239/7b4d479660d6) (YouTube) 30. [Temperature in Metal Working: Hot and Cold Working](https://invisiblenetwork.ai/learn/nptel/112107239/827f91c124c1) (YouTube) 31. [Rolling Process: Classification, Hot and Cold Rolling](https://invisiblenetwork.ai/learn/nptel/112107239/82adc1be69b2) (YouTube) 32. [Analysis of Rolling Operation: Forces and Geometrical Relationships](https://invisiblenetwork.ai/learn/nptel/112107239/8f22fd6252c3) (YouTube) 33. [Introduction to Forging Process: Classification and Equipments](https://invisiblenetwork.ai/learn/nptel/112107239/76bb331aa7f6) (YouTube) 34. [Analysis of Forging Process](https://invisiblenetwork.ai/learn/nptel/112107239/35585584ded3) (YouTube) 35. [Problem Solving on Rolling and Forging Processes](https://invisiblenetwork.ai/learn/nptel/112107239/aec7bc398f21) (YouTube) 36. [Extrusion Process: Classification and Analysis](https://invisiblenetwork.ai/learn/nptel/112107239/cc8f11bd3ccc) (YouTube) 37. [Drawing of Rods, Tubes and Wires](https://invisiblenetwork.ai/learn/nptel/112107239/48bb9e6d594e) (YouTube) 38. [Analysis of Drawing Operation](https://invisiblenetwork.ai/learn/nptel/112107239/f9fa2837f428) (YouTube) 39. [Sheet Metal Operations](https://invisiblenetwork.ai/learn/nptel/112107239/6886e3715657) (YouTube) 40. [Metal Forming Defects](https://invisiblenetwork.ai/learn/nptel/112107239/07cd4699c72e) (YouTube) 41. [Classification of Joining Processes](https://invisiblenetwork.ai/learn/nptel/112107239/f1a59bb4f983) (YouTube) 42. [Heat Flow in Welding](https://invisiblenetwork.ai/learn/nptel/112107239/97d2f2fc821e) (YouTube) 43. [Metallurgy of Fusion Welds](https://invisiblenetwork.ai/learn/nptel/112107239/918b6c34fab7) (YouTube) 44. [Heat Affected Zone in Welding](https://invisiblenetwork.ai/learn/nptel/112107239/4c2cf6fb0e6d) (YouTube) 45. [Heat Treatment Processes in Welding](https://invisiblenetwork.ai/learn/nptel/112107239/cc3a3d2e7a67) (YouTube) 46. [Principle of Shield Arc Welding Processes](https://invisiblenetwork.ai/learn/nptel/112107239/edbf16214bd0) (YouTube) 47. [Principle of Gas Shield Arc Welding Processes](https://invisiblenetwork.ai/learn/nptel/112107239/354a2293a61e) (YouTube) 48. [Principle of Resistance Welding](https://invisiblenetwork.ai/learn/nptel/112107239/6a54989a2b11) (YouTube) 49. [Principle of Solid State Welding Processes](https://invisiblenetwork.ai/learn/nptel/112107239/35000750d4c0) (YouTube) 50. [Brazing, Soldering and Adhesive Bonding](https://invisiblenetwork.ai/learn/nptel/112107239/b4c77fe72d22) (YouTube) 51. [Residual Stresses in Welding](https://invisiblenetwork.ai/learn/nptel/112107239/512f7a5612df) (YouTube) 52. [Methods of Controlling Residual Stresses in Welding](https://invisiblenetwork.ai/learn/nptel/112107239/4f3eaad99de2) (YouTube) 53. [Welding Distortion](https://invisiblenetwork.ai/learn/nptel/112107239/3957562c5af0) (YouTube) 54. [Control of Welding Distortion](https://invisiblenetwork.ai/learn/nptel/112107239/ae3d81434fa5) (YouTube) 55. [Preheat and Postweld Heat Treatment of Weldments](https://invisiblenetwork.ai/learn/nptel/112107239/20d8fe0404d4) (YouTube) 56. [Weldability of Metals](https://invisiblenetwork.ai/learn/nptel/112107239/4ff440e64d14) (YouTube) 57. [Weldability of Steels](https://invisiblenetwork.ai/learn/nptel/112107239/dce6b789b4cb) (YouTube) 58. [Weldability of Cast Iron](https://invisiblenetwork.ai/learn/nptel/112107239/863f270366ac) (YouTube) 59. [Weldability of Non-Ferrous Materials](https://invisiblenetwork.ai/learn/nptel/112107239/453457327f6b) (YouTube) 60. [Welding Defects](https://invisiblenetwork.ai/learn/nptel/112107239/278eb8b99f79) (YouTube)