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coining

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Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003987
EISBN: 978-1-62708-185-6
... Abstract Coining is a closed-die forging operation in which all surfaces of the workpiece are confined or restrained, resulting in a well-defined imprint of the die on the workpiece. This article focuses on the coining equipment (hammers and presses), lubricants, and general and special die...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... primarily in hot forging and coining. Basically, the two types of hammers are gravity drop and power drop, with several variations of each type. In hammer forging, the workpiece, usually a heated bar, billet, bloom, or ingot, is placed on the lower die and struck by the upper die and ram, causing it to...
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
..., straightness, radii, flash extension, surface, and coining, following the methods outlined in this article. For guidance, refer to the tables of tolerances in this article. This article is adapted from the Forging Design Handbook , American Society for Metals, 1972. Dimensioning is the application of...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006259
EISBN: 978-1-62708-169-6
... recently developed sterling silver alloys, some copper is substituted by additions of elements such as zinc, tin, palladium, and germanium. These alloys show improved tarnish resistance and enhanced age hardening. The annealing practice, however, remains the same. Both coin silver (90%Ag-10%Cu, in...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003834
EISBN: 978-1-62708-183-2
.... Thermostat bimetals are used in various temperature-sensing devices, including motor protectors, circuit breakers, automotive chokes, vent dampers, and room thermostats. Clad metal coinage is another example of materials with unique properties. These materials are used throughout the world for coins...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003135
EISBN: 978-1-62708-199-3
...) on a scale where conductivity of solid annealed copper is 100% IACS. The conductivity of solid copper can be reached or approached in P/M copper parts by sintering the pressed parts at higher temperatures, such as 930 to 1030 °C (1700 to 1900 °F), followed by repressing, coining, or forging...
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
... technology is characterized by multiple impact blows between contoured dies. Hammers are primarily used for hot forging; for coining; and, to a limited extent, for sheet metal forming of parts manufactured in small quantities—for example, in the aircraft/airframe industry. Hammers are capable of developing...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006447
EISBN: 978-1-62708-190-0
... content of the final metallic product was visually tested at that time using the technique of color differentiation against small samples of known chemical content by scratching. The same technique was applied to test gold (Lydian stone) and silver coins, and inspectors in ancient times used senses other...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... only 8 to 16 strokes/min. With the eccentric as part of the gear, accuracy and alignment of the gears determine accuracy of alignment of the slide. Combining the motions of a crank and knuckle lever to drive the press slide, this drive is limited to operations such as coining or embossing...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003974
EISBN: 978-1-62708-185-6
... m is a factor characteristic of the specific forming operation. (a) Closed-die forging with flash. (b) Upset forging without flash. (c) Forward and backward extrusion. (d) Bending. (e) Blanking. (f) Coining. Source: Ref 1 , 2 Fig. 3 Load-versus-displacement curves obtained in closed...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003971
EISBN: 978-1-62708-185-6
...-operated two-roll mill for coin-making purposes. In the following years, several designs for rolling mills were utilized in Germany, Italy, France, and England. However, the development of large mills capable of hot rolling ferrous materials took almost 200 years. This relatively slow progress was...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006049
EISBN: 978-1-62708-172-6
..., a solvent (methyl ethyl ketone) rub test or scraping with a coin to roughly assess hardness and to expose a shiny zinc-metallic surface is often done in the field. If application of a subsequent topcoat is performed too soon, prior to suitable curing, atmospheric moisture may be shut out and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003150
EISBN: 978-1-62708-199-3
... (also 92.5%) silver and 75 parts (or 7.5%) copper. Until 1964 the U.S. coin silver was an alloy of 90% Ag (900 fine) and 10% Cu. Silver bullion that is traded has a silver content ranging from 999 fine to 999.9 fine. Gold and copper are silver impurities in any fineness of silver bullion. Another...
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
... can be used to manufacture a large number of cavities. This process is particularly attractive for making dies with shallow cavities or dies that can be hardened after the cavity has been produced. Major examples are coining dies and dies for hot and cold forging of knives, spoons, forks, handtools...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003016
EISBN: 978-1-62708-200-6
... especially important in panel molds. Aluminum molds often require steel or hardened pinch-off inserts to prevent coining of the parting line when some of the hard (high durometer) engineering thermoplastics are molded. The term pinch-off refers to a raised edge around the cavity in the mold that seals off...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003087
EISBN: 978-1-62708-199-3
... larger process of bringing new products to market. The name that has been coined for the complete process is the product realization process (PRP). As indicated in Fig. 2 , engineering design takes place approximately between marketing and manufacturing within the total PRP of a firm. Engineering design...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003180
EISBN: 978-1-62708-199-3
... steels for various methods of forming Steel 0.2% yield strength Suitability for: MPa ksi Blanking Piercing Press-brake forming Deep drawing Spinning Roll forming Coining Embossing Austenitic steels 201 380 55 B C B A-B C-D B B-C B-C 202 380 55 B B A A B-C...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
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