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precision hot forging

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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003986
EISBN: 978-1-62708-185-6
... are extremely important in achieving a forging setup suitable for precision hot forging. It is also important to recognize that the initial setup may not remain constant throughout the forging run and periodic adjustments may be necessary. The guidance system of the press (and die set, if one is used...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005144
EISBN: 978-1-62708-186-3
... forming hexagonal crystal structures hot forming lubricants magnesium magnesium alloys manual spinning power spinning precision forging press-brake forming rubber-pad forming stretch forming MAGNESIUM ALLOYS are an important category of lightweight structural material with favorable...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
..., screw-type, and multiple-ram). It further discusses the technologies used in the design of dies, terminology, and materials selection for dies for the most common hot-forging processes, particularly those using vertical presses, hammers, and horizontal forging machines. A brief section is included...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004024
EISBN: 978-1-62708-185-6
... shape process. The indirect rapid tooling technologies include 3D Keltool process, hot isostatic pressing, rapid solidification process tooling, precision spray forming, and radially constricted consolidation process. 3D Keltool process direct rapid tooling forging dies hot isostatic pressing...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003975
EISBN: 978-1-62708-185-6
... precision forging punching safety precautions thermal fatigue trimming dies vertical press wear resistance DIE MATERIALS used for hot forging include hot-work tool steels (AISI H series), some alloy steels such as the AISI 4300 or 4100 series, and a small number of proprietary, lower-alloy...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003996
EISBN: 978-1-62708-185-6
... through-die, and/or multiple-segment wrap-die systems to very restricted design and tolerances necessary for assembly. Net-shape aluminum forgings are discussed more thoroughly in the section “Aluminum Alloy Precision Forgings” in this article and in the article “Precision Hot Forging” in this Volume...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003973
EISBN: 978-1-62708-185-6
... for closed-die forging Some presses are equipped with a hydraulic control circuit designed specifically for precision forging (see the article “Precision Hot Forging” in this Volume). With this circuit, it is possible to obtain a rapid advance stroke, followed by preselected first and second...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004000
EISBN: 978-1-62708-185-6
... or block/finish dies), conventional (achieved with two or more sets of dies), high-definition (also requiring two or more sets of dies), and precision forgings (frequently employing hot-die or isothermal forging techniques). Precision titanium alloy forgings are discussed below. Blocker-type titanium...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006493
EISBN: 978-1-62708-207-5
... speeds are generally on the slow side, with 2.54 cm/s (1 in./s) or less being typical. Hot dies, including isothermal dies, are common. For most cases, tooling is within 120 °C (215 °F) of the workpiece temperature. For net-shape/precision forgings, isothermal tooling and low strain rates are the norm...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005885
EISBN: 978-1-62708-167-2
..., they become weakened. Consequently, in the presence of tensile stresses the grain boundaries separate, which causes hot shortness. Precise temperature control during the forging of steels with higher copper residuals is needed in order to avoid hot shortness problems due to residuals. Induction heating...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003980
EISBN: 978-1-62708-185-6
... precisely for this kind of forging. Fig. 1 Upset forging process using split dies. 1, stationary die; 2, moving die; 3, upsetting punch. (a) Inserting bar in open dies. (b) Closed dies gripping bar. (c) Upset forging. (d) Upsetting punch withdrawn. (e) Ejection of the forging Hot upset forging...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003990
EISBN: 978-1-62708-185-6
... a smaller billet weight, thus decreasing the amount of material waste. The rotary-forged hub also has closer tolerances than the conventionally forged hub, demonstrating the precision of the rotary process. Fig. 5 Comparison of (a) conventionally forged and (b) rotary hot forged carbon steel clutch...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003998
EISBN: 978-1-62708-185-6
... discussion. Hot Workability Some rather extensive studies of the hot workability of magnesium alloys have been conducted ( Ref 8 , 9 ). The data shown in Fig. 2 should provide a useful supplement to Table 2 when selecting the appropriate forging conditions (including rate and temperature...
Book Chapter

By H.W. Sizek
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003984
EISBN: 978-1-62708-185-6
... to very close tolerances very efficiently. Figure 1 shows the range of product sizes and shapes that can be formed with radial forging. Fig. 1 Range of products that can be produced with radial forging Types of Radial Forging Radial forging can be conducted as either a hot-working...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... are covered. discontinuities hot forming ingot casting metalworking defects nonferrous forging steel forging wrought metal products Introduction to Failures Related to Hot Forming Processes Imperfections from the Ingot Imperfections in Wrought Forms Steel Forging Defects Defects...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004041
EISBN: 978-1-62708-185-6
... and worktable is controlled by numerical-controlled programming. In forging, WEDM is mainly used for manufacturing trimming dies. Advances in EDM Since the 1990s, increased control of the EDM process has provided a higher level of machining precision, along with decreased damage to the workpiece...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003991
EISBN: 978-1-62708-185-6
..., and machining. The article discusses the effect of forging on final component properties and presents special considerations for the design of hot upset forgings. alloy steel carbon steel forgeability forging forging die design heat treatment hot upset forgings machining  mechanical properties...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
...Abstract Abstract Forging is the process of working hot metal between dies, usually under successive blows and sometimes by continuous squeezing. This article describes the material selection criteria, quality assurance tests for forged components, and the dimensional tolerances of closed-die...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004032
EISBN: 978-1-62708-185-6
... oil or polymerbased lubricants and molybdenum disulfide for warm application; graphite suspensions in oil or water for hot forging steels; and glass films for titanium and superalloys hot forgings. The article describes the applications of lubricants in warm extrusion and forging, hot forging of steel...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003184
EISBN: 978-1-62708-199-3
..., ring rolling, and extrusion (both hot and cold). The 6 xxx series of aluminum alloys is selected for nearly 75% of extrusion applications. Fig. 14 Types of aluminum closed-die forgings and tolerances for each. (a) Blocker-type. (b) Conventional. (c) High-definition. (d) Precision...