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forging dies

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Published: 01 February 2005
Fig. A.3 Blocker and finish forging dies as mounted on the bolster of the mechanical press More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040277
EISBN: 978-1-62708-300-3
... materials and the basic requirements for cold forging dies. The chapter also covers die manufacturing processes, such as high-speed and hard machining, electrodischarge machining, and hobbing, and the use of surface treatments. die materials die manufacturing 21.1 Introduction The design...
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Published: 01 February 2005
Fig. 2.8 Isothermal forging with dies and workpiece at approximately the same temperature More
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Published: 01 September 2008
Fig. 2 Examples of hot work dies for (a) press forging and (b) die casting. Courtesy of Villares Metals More
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Published: 01 November 2013
Fig. 14 Typical multiple-impression hammer dies for closed-die forging. Source: Ref 10 More
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Published: 01 November 2013
Fig. 18 (a) Dies used in roll forging. (b) Overhang-type roll forger that uses fully cylindrical dies. Source: Ref 10 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040319
EISBN: 978-1-62708-300-3
... would have to be increased to within ±10 μm. Some of the causes of dimensional variation in precision forging are [ Osakada, 1999 ]: Die manufacturing: The dimensional accuracy of the dies directly influences that of the parts being produced with them. Hence, die manufacturing is a very crucial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040159
EISBN: 978-1-62708-300-3
... the requirements of various forging alloys, the influence of machine operating parameters, and production challenges related to lot tolerances and shape complexity. The chapter also covers the design of finisher dies, the prediction of forging stresses and loads, and the design of preform dies for steel, aluminum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
...-element modeling is used to predict die failure and extend die life. cold forging fatigue fracture finite-element modeling hot forging wear 22.1 Introduction In forging, die failure can be a significant portion of the overall production cost. The dies that fail must be either repaired...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390325
EISBN: 978-1-62708-459-8
... forging and drop forging when using hammer presses, involves two cooperating dies that define only part of the forging geometry. Material is free to flow out along the parting line into a flash ( Fig. 11.20 ). Figure 11.20: Stages of die filling in impression-die forging [ 5 ]. The contours show...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130133
EISBN: 978-1-62708-284-6
... (especially steels) will have residual stresses after cold forging; distortion occurs when the stresses are not symmetrical. Lubrication—dies and workpiece —viscosity and flow, hydrodynamics of lubrication, friction, heat generation and power losses, coefficients of friction Factors in analysis...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340165
EISBN: 978-1-62708-427-7
... While impression or closed-die forging confines the metal in dies, open-die forging is distinguished by the fact that the metal is never completely confined or restrained in the dies. Most open-die forgings are produced on flat dies. Different modifications to the process are possible using various...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... transfer between the workpiece and dies and between the workpiece and the environment (air or lubricant and coolant, etc.) In processes such as forging and extrusion, the average instantaneous temperature in the deforming workpiece, θ A , can be estimated by [ Altan et al., 1970 ]: (Eq 6.1) θ...
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Published: 01 February 2005
Fig. 23.15 Multiaction forming press with the dies and the forged gear [ Nakano, 1997 ] More
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Published: 01 September 2008
Fig. 13 Steel upset forged between flat dies made on a screw press More
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Published: 01 September 2008
Fig. 15 MSC superforge simulation. Disc upset forged between flat dies, showing (a) start position and (b) end position after 74.93 mm (2.95 in.) stroke More
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Published: 01 January 2015
Fig. 10.7 Example of titanium forged in open or flat dies as in blacksmithing (hand forging) More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
... transfer devices from one die cavity to the next. Most horizontal forging machines are designed such that the gripper dies are oriented vertically, i.e., during closing action, the movable gripping die moves horizontally [ Lange, 1958 ]. 12.6 Rotary or Orbital Forging Machines The principles...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
... to the fibrous structure, and the parting line of the dies should be located so as to minimize disruption to the grain flow lines. Fig. 4 Grain flow from forging. Source: Ref 5 Hammers and Presses Metals can be forged using hammers, mechanical presses, or hydraulic presses. Hammer forging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
.... Open-Die Forgings Open-die forgings (also called flat-die, blacksmith, and hand forgings) are made on flat or simple dies by repeated strokes or blows, with the workpiece manipulated into a simple shape. An example of a titanium open-die forging (hand forging) is shown in Fig. 10.7 , a shape...