Presentation on theme: "PRINCIPLES OF AGRICULTURE Introduction to shielded arc welding and welding in general."— Presentation transcript:
PRINCIPLES OF AGRICULTURE Introduction to shielded arc welding and welding in general
Introduction to shielded arc welding 1- What is shielded arc welding? Describe it. 2- Identify some safety precautions for shielded arc welding? 3- What are some procedures for striking an arc? 4- List the basic weld joints and positions. 5- List the equipment needed for shielded arc welding. 6- Examine some basic weave patterns used in shielded metal arc welding.
What is shielded arc welding? 1. Shielded arc welding is a fusion process where heat is obtained from an electric arc which is formed between a base metal and an electrode. 2. Some safety precautions are: A)Don't strike arc until helmet is in place. B)Wear proper clothing. C)Hold electrode by insulated handle. D)Proper ventilation. E)Avoid welding near combustible material. F)Always wear safety glasses. G)Never stand in water when welding. H)Never weld on closed containers. 3. Hold the electrode at a 15 degrees travel angle and either tap or strike an arc then position electrode 1/8 inch from metal.
What is shielded arc welding? (cont.) 4. Some basic weld joints are Butt, Tee, Lap, Corner and Edge. 5. Welding positions are flat, horizontal and overhead. 6. Some of the equipment used includes: A) GrinderE) Chipping Hammer B) HelmetF) Clothes/Sleeves C) ViceGrips G) Helmet D) Wire Brush
Why is understanding welding important to the agriculture industry? Used for construction, repairs and industry development. Provides many jobs to the industry. Creates a higher need for development in technology and metal fabrication. What else can you think of?