INTRODUCTION TO METALWORKS.pptx MA - TLE

Metalworks includes, forming, joining ...

1. INTRODUCTION TO METALWORKS LORLIE T. BUSMENTE

2. What is metalworking? Metalworking is the process of forming and shaping metals to create useful tools, objects, equipment parts, and structures.

3. The history of metalworking For thousands of years, precious metals have been worked into objects and valued by ancient civilizations, from Pharaohs in Egypt to Mayans in North America.

4. Metalworking has been a way for civilizations to communicate status, religious beliefs, and symbolism through artifacts and a practical way to build tools and structures. It has been practiced by artisans, blacksmiths, alchemists, contractors, and more around the world, all of whom specialize in different aspects of metalworking. Many ancient metalsmithing techniques are still used today, from soldering to  welding .

5. Metallic ores have been extracted from the earth for thousands of years, placing great importance on metalworkers as the source of extricating metals. For example, you can remove iron from mineral-rich sand and mine precious metals like silver from the earth. In modern times, metals have become even more critical to humanity and advancements in technology and transportation. Metalworking is all around us, from the fabrication of electronics to automobiles.

6. Metalworking techniques Metalworking techniques create everything from small decorative objects to large-scale structures.

7. Cutting Cutting removes material from metal using milling, routing, turning, and technologies like CNC (computer numerical control) machines.

8. Joining Joining is the process of combining several pieces of metal with heat through welding or soldering.

9. Forming Forming is the process of re-shaping and fabricating metal objects without adding or removing any material. This process is possible through a combination of heat and pressure.

10. Casting Metal casting is a metalworking process that can be traced back to around 4000 BCE, and it is still used for making sculptures, tools, and jewelry.

11. The common methods for casting metal are lost wax casting and sand casting.

12. Lost wax casting involves carving or shaping your piece in wax, creating a plaster mold around it, then burning out the wax.

13. Sand casting uses sand as the mold material. Sand is combined with a bonding agent, such as clay, and is gated. Then, molten metal is flowed into the mold to create a solid object.

14. Cutting processes & techniques Metals must be cut and separated throughout the metalworking process to build structures, make tools, and more.

15. Milling Milling is the process of removing precise amounts of material from a greater piece.

16. Turning Turning is a machining process in which a cutting tool moves linearly while the workpiece rotates, strategically removing material from the piece.

17. Grinding Grinding uses an abrasive process to remove material from the workpiece, typically in the finishing stages of metalworking.

18. Drilling Drilling creates holes in metal using a drill press, handheld drill, or CNC machine.

19. Joining processes & techniques Joining metals utilized heat and pressure in order to create a larger piece or build a structure.

20. Welding Welding metal is a fabrication process that joins materials through pressure and heat.

21. Soldering Soldering is another method for joining metals by melting a filler metal on top of the metals being joined to make a reliable electrical bridge.

22. Riveting Rivets are permanent mechanical fasteners that can create kinetic joints in a workpiece or reinforce the structural integrity of a larger object.

23. Forming processes & techniques Reshaping and manipulating the shape of metal can be done when the material is hot or cold.

24. Forging Forging is one of the oldest metalworking processes used to form and shape metal.

25. Roll forming Roll forming is a process that involves the continuous bending of a long strip of sheet metal through a roll forming mill at room temperature.

26. Rolling Rolling is a metal forming process in which metal stock is passed through a rolling mill to reduce the thickness or to make the thickness uniform.

27. ASSESSMENT: 1. It is the metal forming process in which metal stock is passed through a rolling mill to reduce the thickness or to make the thickness uniform. 2 . It is one of the oldest metalworking processes used to form and shape metal. 3. a process that involves the continuous bending of a long strip of sheet metal through a roll forming mill at room temperature.

28. 4. It is a permanent mechanical fasteners that can create kinetic joints in a workpiece or reinforce the structural integrity of a larger object. 5. It is another method for joining metals by melting a filler metal on top of the metals being joined to make a reliable electrical bridge.