Forging

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Die materials Common steels used for forging dies <strong>Forging</strong> materials DIN Steels AISI Copper and copper alloys DIN AISI Light alloys DIN AISI <strong>Forging</strong> dies C70 W2 - C85 W2 - 60MnSi4 - X30WCrV53 H21 X30WCrV53 - 40CrMnMo7 - X38CrMoV51 H11 X38CrMoV51 H11 X32CrMoV33 H10 Die inserts 55NiCrMoV6 6F2 55NiCrMoV6 56NiCrMoV7 6F3 56NiCrMoV7 6F2 57NiCrMoV77 - 57NiCrMoV77 - 57NiCrMoV77 6F3 35NiCrMo16 - X38CrMoV51 H11 X30WCrV93 H21 X38CrMoV51 H11 X32CrMoV33 H10 X32CrMoV33 H10 X32CrMoV33 H10 X30WCrV53 - X30WCrV52 - X30WCrV53 - X37CrMoW51 H12 Suranaree University of Technology Tapany Udomphol Jan-Mar 2007
Die materials Die life can be increased by 1) Improving die materials such as using composite die or 2) Using surface coating or self-lubricating coatings Ultra hard surface coatings Current forging Future forging Ultra hard surface coating on die surface is used to Innovative die materials Innovative surface modification http://www.eere.energy.gov/industry/supporting_industries /pdfs/innovative_die_materials.pdf • Improve die life. • Reduce energy input. • Reduce die-related uptime and downtime. • Reduce particulate emission from lubricants. Suranaree University of Technology Tapany Udomphol Jan-Mar 2007
Page 1 and 2: Chapter 2 Forging Subjects of inter
Page 3 and 4: Introduction • Forging is the wor
Page 5 and 6: Forging operations Fullering is use
Page 7 and 8: Classification of forging processes
Page 9 and 10: Hammer and press forging processes
Page 11 and 12: Forging hammer or drop hammer Belt
Page 13 and 14: Power hammer • Power hammer provi
Page 15 and 16: Example: Hydraulic Press forging
Page 17 and 18: Typical values of velocity for diff
Page 19 and 20: Open-die forging • Open-die forgi
Page 21 and 22: Closed-die forging operation billet
Page 23 and 24: Example: Die set and forging steps
Page 25 and 26: Shape classification •The degree
Page 27 and 28: Preform design is the most difficul
Page 29 and 30: General considerations for preform
Page 31: www.nitrex.com Die materials Requir
Page 35 and 36: Calculation of forging loads The to
Page 37 and 38: D o h o h D We have engineering str
Page 39 and 40: • Consider the force acting on a
Page 41 and 42: As the frictional force µσ y is u
Page 43 and 44: The total forging load, P, is given
Page 45 and 46: Example: The flash has high deforma
Page 47 and 48: In the case of sticky friction, if
Page 49 and 50: The mean forging load (in the stick
Page 51 and 52: Forming textures Redistribution of
Page 53 and 54: Residual stresses in forging • Th
Page 55 and 56: Typical forging defects www.mece.ua
Page 57 and 58: Summary • Mainly hot forging - Bl

Forging

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