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Comprehensive Guide to Hammer Forging in Engineering Technology

Learn about the techniques, tools, and processes involved in hammer forging in engineering technology. This tutorial covers free forging, anvil types, forging tools, temperatures, and more. Enhance your knowledge of volume forming with practical insights.

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Comprehensive Guide to Hammer Forging in Engineering Technology

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  1. Anglicky v odborných předmětech"Support ofteachingtechnicalsubjects in English“ Tutorial: Engineering technology Topic: Volumeforming – hammerforging Prepared by: Ing. Elena Nová Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.

  2. Volume forming– hammer forging

  3. Volume forming – hammer forging • Free forging • Anvil • Anvil path

  4. Volume forming – hammer forging • Anvil’s top swage is smooth and hardened

  5. Volume forming – hammer forging • Free (smith) forging is divided on: • 1. Hand • 2. Machine • Hand forging uses hand forging tools on anvil. • For smith / hammer forging is used different machines, namely power hammer and presses.

  6. Volume forming – hammer forging • Steel hearth – fuel is black coal or coke • Smith’s hammers

  7. Volume forming – hammer forging • Hammers are made from steels with Carbon content – C 0,7 to 1%. • Both sides of hammer are hardened. • Recessed/stepped hammers have hardened only surface.

  8. Volume forming – hammer forging • Type of smith hammers – recessed hammers • SharpSet (flat) hammer • Profiled hammerFore (Sledge) hammer

  9. Volume forming – hammer forging • Black smith tongs – are adapted to the shape of holding material. • Tongs main parts: • Jaws • Lock • Handle • Smith tongs • “Wolf jaws“

  10. Volume forming – hammer forging • Forging temperatures in Fe – Fe3C diagram

  11. Volume forming – hammer forging • Basic forging operation at hand forging: • 1. Extension • 2. Smoothing / planishing • 3. Shouldering • 4. Ramming • 5. Bending • 6. Punching • 7. Black smith welding

  12. Volume forming – hammer forging • 1.Extension (Length forging, drawing). It is the most used operation. • 2. Planishingis provided by material hammering onto set hammer.

  13. Volume forming – hammer forging • 3. Shouldering is rod thinning in given length • Shouldering is done on rod’s one or both sides.

  14. Volume forming – hammer forging • 4. Ramming – strengthening of semi-product.

  15. Volume forming – hammer forging • Forged welding – is the oldest type of welding. • Forged welding is done at temperature of 1300 deg. C (white heat / incandescence). • Welding is called ‘butt weld’ (short rods of dia. 15mm) or overlapping.

  16. Answer questions • How is ‘smith forging’ divided? • Name forging tools. • Name hammer types? • Name basic black smith works. • What temperature is used at forged welding? • What is used at machine forging?

  17. Answer questions: • Explain forge extension. • Explain smoothing. • Explain shouldering. • Explain ramming. • Explain bending. • Explain cutting. • Explain punching.

  18. Used literature • http://www.ksp.tul.cz/cz/kpt/obsah/vyuka/skripta_tkp/sekce/03.htm • Strojírenská technologie, Otakar Bothe,1980

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