Machining Processes: Powder Metallurgy, Turning, Facing

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Questions and Answers

What is the main purpose of the turning process?

  • To remove material to reduce the diameter of a rotating workpiece (correct)
  • To create a flat surface on a workpiece
  • To shape a metal sheet into a specific form
  • To cut spiral threads into a workpiece

In the deep drawing process, a punch is used to compress the material into a die.

True (A)

What term describes the material that is removed by a cutting tool in the turning process?

chip

In slab milling, the direction of the cutter's movement is __________ to the rotation of the cutter.

<p>perpendicular</p> Signup and view all the answers

Which of the following processes specifically involves creating a flat surface on a cylindrical workpiece?

<p>Facing (A)</p> Signup and view all the answers

The threading process only involves the rotary motion of the workpiece.

<p>False (B)</p> Signup and view all the answers

In powder metallurgy, what is the main outcome of compressing the metal powder?

<p>a compact metal part</p> Signup and view all the answers

Match the following manufacturing processes with their descriptions:

<p>Turning = Material removal to reduce diameter of a workpiece Facing = Machining to create a flat surface Threading = Cutting a spiral thread into a workpiece Deep Drawing = Forming a shape using a punch and die</p> Signup and view all the answers

Flashcards

Powder Metallurgy

A manufacturing process where metal powder is compressed and shaped into a desired form under pressure, resulting in a compact metal part.

Turning

A machining process that uses a single-point cutting tool to remove material from a rotating workpiece, reducing its diameter.

Facing

A machining process that creates a flat surface on a workpiece by removing material with a single-point cutting tool.

Threading

A machining process that creates a spiral thread on a workpiece by moving a cutting tool along its axis.

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Slab Milling

A milling process where a cutter moves across a workpiece to shape its surface.

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Deep Drawing

A sheet metal forming process where a workpiece is pressed against a die to create a desired shape.

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Feed (in machining)

The movement of a cutting tool along a workpiece.

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Rotation (in machining)

The rotary motion of a workpiece or a cutting tool.

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Study Notes

Powder Metallurgy

  • Powder metallurgy is a process where metal powders are compacted and then sintered to form a solid component.
  • Initial step involves preparing metal powders. These powders are then compacted into a desired shape.
  • The compacted powder is then heated (sintered) at a specific temperature below the melting point of the metal, bonding the particles together.

Turning

  • Turning is a machining process where a single-point cutting tool removes material from a rotating workpiece to create a cylindrical shape.
  • A single-point cutting tool is used to remove material.
  • The workpiece rotates, while the cutting tool moves along the workpiece's axis to produce the desired shape.
  • Starting diameter and chip are important features of the process.

Facing

  • Facing is an operation in machining which generates a flat surface on the end of a workpiece.
  • A single-point cutting tool is used.
  • The workpiece rotates while the tool moves along the axis of rotation to create a flat face on the end of the workpiece.

Threading

  • Threading is a machining process creating a helical groove on a workpiece to produce a thread.
  • A threading tool is used for producing threads.
  • The tool creates the desired helical groove.
  • Feed and rotation are important for the process.

Slab Milling (Specifically, Conventional Milling)

  • Slab milling involves removing material from a flat surface using a milling cutter.
  • A milling cutter is used, and the workpiece is typically stationary.
  • The milling cutter removes material in a specific way.
  • The process produces flat surfaces.
  • Feed and Rotation are important aspects of the process.

Deep Drawing

  • Deep drawing is a sheet metal forming process where a blank is shaped into a desired cup-like form by applying force.
  • A punch and die are used.
  • The blank is drawn into the die cavity by the punch.
  • The process results in the creation of a contoured part.
  • Punch, Die, and blank are important components of the process.

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