Understanding Carbide Tools and Powder Techniques
Which of the following is not pronounced by the powder techniques?
O Grub screw
O Porous bearings
O Tungsten filament
O Carbide tool
Answer:
Carbide tools are not produced using powder techniques. Powder techniques, such as powder metallurgy, are commonly employed to manufacture components with specific properties by compacting and sintering metal powders. Grub screws, porous bearings, and tungsten filaments can be produced using powder metallurgy.
Powder Techniques in Manufacturing
Powder metallurgy is a method of producing components from metal powders. This process involves compacting metal powders in a die to create the desired shape and then sintering the compacted powder to bond the particles together. This results in a final product with high density and specific properties tailored to the application.
Components Produced with Powder Techniques
Grub screws are small threaded fasteners commonly used to secure objects in place. These screws can be produced using powder metallurgy, allowing for precise shaping and high strength.
Porous bearings are components used in applications where self-lubrication is required. By utilizing powder techniques, porous bearings can be manufactured with controlled porosity and composition to optimize their performance.
Tungsten filaments are used in incandescent light bulbs to produce light when heated by an electric current. Powder metallurgy enables the production of tungsten filaments with the necessary properties for efficient light generation.
Carbide Tools Production Process
Carbide tools are cutting tools made from hard carbide materials, typically tungsten carbide. Unlike components produced with powder techniques, carbide tools are manufactured through a process called cemented carbide production.
In cemented carbide production, tungsten carbide powder is mixed with a binder material, such as cobalt, to form a paste. This mixture is then shaped using processes like pressing or injection molding before being sintered at high temperatures. The sintering process results in a dense and hard material ideal for cutting applications.
While carbide tools and components produced with powder techniques serve different purposes, both processes offer unique advantages in manufacturing specialized parts with specific properties.