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precision 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
...Abstract Abstract Precision forging is defined as a closed-die forging process in which the accuracy of the shape, dimensional tolerances, and surface finish exceed normal expectations to the extent that some of the postforge operations can be eliminated. This article provides an overview...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
..., precision forging, and cold forging. computer-aided design die design forging processes materials selection types of hammers types of presses Hammers and Presses for Forging FORGING MACHINES fall into three categories according to their method of operation. Mechanical forging presses...
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
..., cleaning, heat treatment, and inspection. The article presents a discussion on titanium alloy precision forgings and concludes with information on the forging of advanced titanium materials and titanium aluminides. cleaning die heating forgeability forging forging design forging equipment...
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
.... It concludes with a discussion on the forging of advanced aluminum materials and aluminum alloy precision forgings. aluminum aluminum alloy aluminum alloy forging cleaning die design die heating die manufacture die materials forgeability forging forging stock forming heat treatment...
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
... and the lubricants used in the processes. It discusses the various forming processes of magnesium alloys. These include press-brake forming, deep drawing, manual and power spinning, rubber-pad forming, stretch forming, drop hammer forming, and precision forging. cold forming deep drawing drop hammer forming...
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: 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 Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003125
EISBN: 978-1-62708-199-3
... of approach to the final dimensions desired. The ultimate in shaping parts by forging is represented by “precision forgings,” which are essentially net-shape parts requiring little or no machining. The advantage of closed-die forgings is that the metallurgical-structure alignment follows the part contours...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004040
EISBN: 978-1-62708-185-6
...: Modified Precision Forging That Provided for Lightening Holes, Eliminated Contour Machining, and Contributed to Cost Reduction In the manufacture of aluminum alloy partial frames weighing about 0.23 kg (0.5 lb), a modified precision forging featured draft ranging from 0° to 3°, a thin reinforced web...
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.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...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004035
EISBN: 978-1-62708-185-6
... earlier in this article. This system will help to simplify drawing, fixturing, machining, and inspection. Assign tolerances: Review the function and the service requirements of the forging to determine the degree of precision required in maintaining assigned dimensions. The degree of precision...
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
...-blow dwell time, quantity of blows, etc.) can be engineered for best control of adiabatic heating, die chilling, strain, strain rate, recrystallization, and grain growth. The engineered processing steps are precisely controlled by the computerized forging hammer controls, which also allow...
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
... are similar to those typical of aluminum forgings and lower than those for steel forgings. Forging Processes Magnesium alloys are forged predominantly by open-die and closed-die forging processes, although other forging methods, such as precision forging techniques used in aluminum forging can...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003988
EISBN: 978-1-62708-185-6
... No large variations in cross section; openings limited 100 5–15 20,000 200 Precision forging 0.3–5 0.66–11 2 Any; openings limited 80–90 10–20 20,000 200 Cold forging 0.01–35 0.022–77 Not limited Mostly rotational symmetry 95–100 1–10 5,000 150 Precision casting 0.1–10 0.22...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
... information on such equipment). Fig. 1 Schematic composite of cross sections of blocker-type, conventional, and precision forgings Of the various classifications, those based on the close-to-finish factor are most closely related to the inherent properties of the forging, such as strength...
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