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Manufacturing Processes Lab I MET 1321

Manufacturing Processes Lab I MET 1321. MET 1321 – Course Introduction. This is a lecture and laboratory course. Students familiarize themselves with industrial manufacturing techniques from a mechanical technology perspective . Co-requisite: MET 1311 or concurrently.

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Manufacturing Processes Lab I MET 1321

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  1. Manufacturing Processes Lab IMET 1321 Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  2. MET 1321 – Course Introduction This is a lecture and laboratory course. Students familiarize themselves with industrial manufacturing techniques from a mechanical technology perspective. Co-requisite: MET 1311 or concurrently. If you do not meet the co-requisite requirement, then you are expected to withdraw from this course. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  3. Course texts The texts for the course are: Miller R.T. Welding Skills, 3rd edition. American Technical Publishers. Walker, J. R. Machining Fundamentals. The Goodheart-Willcox Co., Inc. The text is meant as a reference and for supplemental assigned reading, lecture notes will deviate in both content and approach. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  4. Course Objectives • The objective of the course is to Students familiarize themselves with industrial manufacturing techniques from a mechanical technology perspective. The processes covered will introduce • fundamental machine tool operations, • basic metal joining techniques, • Terminology(American Welding Society or AWS) , and • current safety practices. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  5. Course content- Topic coverage • Part 1: • Welding safety, • Shielded metal arc welding, • Gas metal arc welding, • Gas Tungsten arc welding, • Oxyacetylene welding, • Fundamental of welding design, • Precision measurement and inspection, • Part 2: • Machine tool safety, • Cutting tool selection, • Machine tool workholding, • Speed and feedrate calculations, • Materials properties. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  6. Part 1: What is Welding? The process of joining two members by the addition of heat and filler metal. Welding is the most economical and efficient way to join metals permanently. A large amount of welding is done by manual techniques where an electric arc or a gas flame is used to melt the metal in the joint. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  7. Welding Processes • There are four main manual processes. They are called: • Manual Metal Arc welding (MMA or stick welding), • Tungsten Inert Gas welding (TIG), • Metal Inert Gas welding (MIG) and • Oxyfuel Welding (OFW) Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  8. Welding Processes • Shielded Metal Arc Welding (Stick welding) • Gas Metal Arc Welding (MIG) • Gas Tungsten Arc Welding (TIG) • Flux Cored Arc Welding • Submerged Arc Welding • Plasma Arc Welding ARC Welding (AW) Oxyfuel Welding OFW Oxyacetylene Welding (OAW) Resistance Welding RW Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  9. 1 Shielded Metal Arc Welding (SMAW), also known as Manual Metal Arc (MMA) welding or informally asStick Welding Shielded metal arc welding (SMAW), also known as manual metal arc (MMA) welding or informally as stick welding, is a manual arc welding process that uses a consumable electrodecoated in flux to lay the weld. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  10. 1 Shielded Metal Arc Welding (SMAW), or Manual Metal Arc (MMA) welding or Stick Welding Fact 1: The world's most popular welding process, Fact 2: The process is used primarily to weld iron and steels (including stainless steel) but aluminum, nickel and copper alloys can also be welded with this method. Fact 3: The main advantages of shielded metal arc welding are that high-quality welds are made rapidly at a low cost. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  11. 1 Shielded Metal Arc Welding (SMAW), or Manual Metal Arc (MMA) welding or Stick Welding Shielded metal arc welding is performed by striking an arc ( electronic current AC or DC) between a coated-metal electrode and the base metal. Once the arc has been established (the weld is laid), the molten metal from the tip of the electrode flows together with the molten metal from the edges of the base metal to form a sound joint. This process is known as fusion. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  12. 1 Shielded Metal Arc Welding (SMAW), or Manual Metal Arc (MMA) welding or Stick Welding The coating from the electrode forms a covering over the weld deposit, shielding it from contamination; therefore the process is called shielded metal arc welding. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  13. 1 Shielded Metal Arc Welding (SMAW), or Manual Metal Arc (MMA) welding or Stick Welding The SMAW welding process typically is capable of producing three types of welded joints. They are: Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  14. 2 Gas Metal Arc Welding (GMAW) orMetal Inert Gas (MIG) WeldingMetal Active Gas (MAG) Welding MIG is an arc welding process that uses an arc between a continuous wire electrode and the weld pool. Wire is continuously fed from a spool. Argon is used as a shielding gas for nonferrous metals such as aluminum, and Carbon dioxide/carbon dioxide mixtures ( such as 75/25, 98/2) with argon are used as a shielding gas for steels. MIG welding is a commonly used high deposition rate welding process. MIG welding is therefore referred to as a semi-automatic welding process. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  15. 3 Gas Tungsten Arc Welding (GTAW)Tungsten Inert Gas (TIG) GTAW or TIG is an arc welding process in which a shielding gas protects the arc between a non consumabletungsten electrode and the weld area. The shielding gas is helium or argon. It runs with or without filler metal. Usage: Joining thin-wall tubing and depositing the root pass in pipe joints. GTAW Produces high quality weldment. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  16. 4 Oxyfuel Welding (OFW) • A high temperature flame (normally made using acetylene gas and oxygen) is used to melt the edges of the parts that is welded together. Sometimes additional welding material needs to be added. • Can be used for most types of sheet metal welding. • The welding equipment is easy to transport and does not require external power supply. • It is typically slower than the electrical arc-welding processes. • The equipment is often found in small workshops and automobile workshops since it is also used for heating parts and for soldering. Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  17. Summary • Shielded Metal Arc Welding (Stick welding) • Gas Metal Arc Welding (MIG) • Gas Tungsten Arc Welding (TIG) ARC Welding (AW) Oxyfuel Welding OFW 4. Oxyacetylene Welding (OAW) Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  18. Test yourself What type of welding is used here? It can be anything, but mainly by SMAW (MMA or stick welding) Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  19. Test yourself What type of welding is this? Oxy-fuel welding Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  20. Test yourself What type of welding is this? Gas Metal Arc Welding or MIG Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  21. Test yourself What type of welding is this? SMAW (MMA or stick welding) Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  22. Test yourself What type of welding is this? Gas Tungsten Arc Welding or TIG Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  23. Test yourself What type of welding is this? Gas Metal Arc Welding or MIG Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

  24. Which one is which? Stick welding, Gas metal arc welding (MIG) Gas Metal Arc Welding or MIG SMAW (MMA or stick welding) Manufacturing Processes lab 1 (MET 1321) Prof S. Nasseri

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