Manufacturing processes
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Keith Lee – [email protected] Punching A metal forming process that uses a press to force a tool through the workpiece to create a hole via shearing. Used to make bicycle chains, bolts, and various metal rings. Die Casting Forces molten metal under high pressure into a mold cavity

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Manufacturing Processes

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Manufacturing processes

Keith Lee – [email protected]

  • Punching

  • A metal forming process that uses a press to force a tool through the workpiece to create a hole via shearing.

  • Used to make bicycle chains, bolts, and various metal rings

  • Die Casting

  • Forces molten metal under high pressure into a mold cavity

  • Used to make gearbox housing, oil pans, cylinder head covers

  • Hot Pressing

  • Simultaneous application of heat and pressure to powder creates hard, brittle material

  • Used to make cutting tools, brake pads, clutch discs

Manufacturing Processes


Patents

Keith Lee – [email protected]

Patents

Die Casting

Hot Pressing

Punching


Manufacturing processes

Punching

http://en.wikipedia.org/wiki/Punching 2/3/2014

- Most cost effective process of making holes in strip or sheet metal for average to high fabrication

- Very quick process

http://www.thefabricator.com/article/punching/the-formula-for-successful-punching2/3/2014

- Four essential components: punch, stripper, die, and tool holder system

- Optimizing the die clearance is a very important part of punching success

http://www.manufacturelink.com.au/processes/fabrication-punching.aspx2/3/2014

- Punched material is most normally in sheets, but rolled material can also be punched

- Some machines are able to change punches during the operation to punch different sized holes in the same piece

Keith Lee – [email protected]

Die Casting

http://en.wikipedia.org/wiki/Die_casting 2/3/2014

- Excellent dimensional accuracy (between .1 and .02 mm)

- Casting tensile strength as high as 60 ksi

http://diecasting.org/faq 2/3/2014

- High speed production

- Multiple finishing techniques available

http://www.custompartnet.com/wu/die-casting 2/3/2014

- Can produce geometrically complex parts

- Reusable molds help reduce production costs

Hot Pressing

http://en.wikipedia.org/wiki/Hot_pressing 2/3/2014

- Heats metal powder into a mold

- Largely used to create diamond-metal composite cutting tools and technical ceramics

http://www.bodycote.com/services/hot-isostatic-pressing/isostatic-pressing-services/hot-isostatic-pressing.aspx2/3/2014

- Enables blends of metal powder to be combined into solids that other processes can not achieve

- Eliminates all internal voids in castings

http://technoman.hubpages.com/hub/Isostatic-Pressing 2/3/2014

- Heat and pressure are applied simultaneously

- The process must be closed from the atmosphere so that oxide films can be avoided


Summary

Keith Lee – [email protected]

Summary

  • Punching is the most cost effective way to make holes

  • Die casting is fast and has high dimensional accuracy

  • Hot pressing easily combines different types of metals


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