Arc welding for Engineering Students fisrt year

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1. Arc Welding By- Harshit Tiwari (31) Ayush Kumar Shukla (15)

2. Welding Welding is a fabrication process that joins materials, usually metals or thermoplastics, primarily by using high temperature to melt the parts together and allow them to cool, causing fusion. Common alternative methods include solvent welding (of thermoplastics) using chemicals to melt materials being bonded without heat, and solid-state welding processes which bond without melting, such as pressure, cold welding, and diffusion bonding.

3. Types of welding Topic two Topic three Topic four Topic five Tuesday, February 2, 20XX Sample Footer Text 3

4. Types of Welding Forge Welding: This welding is done by the black-smiths. In this two similar metal pieces are heated up to the plastic stage in the furnace. Then it is hammered so that a homogeneous mixture is formed at the joint. The surface to be joined should be cleaned and made free of any foreign particle, this is done by brushing. Gas Welding: Gas welding is the process in which a gas flame is used to raise the temperature of the metals to be joined. The metals are heated up the melting. The metal flows and on cooling it solidifies. A filter metal may be added to the flowing molten to fill up cavity made during the end preparation. Arc Welding: The welding in which the electric arc is produced to give heat for the purpose of joining two surfaces is called electric arc welding.

5. WHAT IS ARC WELDING ? Arc welding is welding using the heat of an arc as a heat source. In arc welding, positive voltage is applied to the electrode (welding rod/wire) and negative voltage is applied to the base material. This makes an arc occur from the base material to the electrode.

6. Simulation

7. Arc Welding Tools Arc Welding Machine : The cornerstone of any arc welding setup is the welding machine itself. These machines are responsible for generating the electrical current needed to create the welding arc. Electrodes and Filler Metals : Electrodes are consumable rods or wires that provide the material to be deposited into the weld joint, while filler metals are used to fill gaps and reinforce the weld. Welding Helmets : Welding helmets and are designed to keep you safe while providing clear visibility of your work. Welding Gloves and Apparel : Welding gloves and appropriate clothing are essential to prevent burns and injuries.

8. Wire Brush : A wire brush with stainless steel or brass bristles is used to clean the surface of the weld and surrounding area. Electrode Holder : The electrode holder clamps onto the welding electrode and conducts the current to the workpiece. C-Clamps : C-clamps are versatile and can be used to hold metal pieces together while welding. Welding Cables : High-quality, flexible welding cables are necessary for efficient current transmission. The size of the cable should match the amperage output of your welding machine.

9. APPLICATION This welding is used in marine and aerospace industries. It is used to weld pipes and tubes of stainless steel and titanium. It is used to repair tools, die and mold. It is used for welding of cast iron or steel housings and frames. Electric welding is also used for welding process in shipbuilding.

10. Advantage of Arc Welding 1. Versatility: Arc welding is versatile and applicable to a wide range of materials, including steel, aluminum alloy, and stainless steel, making it suitable for diverse welding needs. 2. Cost-Effective: Arc welding is generally more cost-effective than some alternative welding methods, making it an economical choice for various industries. 3. Portability: Arc welding equipment is often portable, allowing for flexibility in performing welding tasks in various locations, whether indoors or outdoors. 4. Strong and Durable Welds: Arc welding produces strong and durable welds, providing reliability and integrity in the joined materials, essential for applications in construction and manufacturing

11. Disadvantage of arc welding Complexity and Skill Requirement: Arc welding requires skill and expertise. Improper technique can lead to weak welds or defects, necessitating a trained operator. Safety Concerns: Arc welding involves high temperatures and bright arcs, posing safety hazards such as eye injuries, burns, and exposure to harmful fumes. Adequate safety measures and protective gear are crucial. Weld Appearance: The appearance of arc welds may not be as aesthetically pleasing as welds produced by other methods, which could be a consideration in applications where visual appearance is important. Sensitivity to Environmental Conditions: Arc welding can be affected by environmental factors like wind and rain when performed outdoors. Such conditions may necessitate additional measures to ensure quality welds.

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