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double-cut dies

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... Abstract Forging machines use a wide variety of hammers, presses, and dies to produce products with the desired shape, size, and geometry. This article discusses the major types of hammers (gravity-drop, power-drop, high speed, and open-die forging), and presses (mechanical, hydraulic, screw...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... affecting die life and explains the effect of thread form on processing. It provides information on various fluids used in thread rolling to cool the dies and the work and to improve the finish on the rolled products. The article provides a comparison between thread rolling and cutting, as well as between...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003983
EISBN: 978-1-62708-185-6
... conditions, the tube must have sufficient column strength to permit feeding. Squareness of the cut ends, roundness, and freedom from surface defects also become more critical as the ratio of outside diameter to wall thickness increases. For some applications, it is necessary to reduce...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003992
EISBN: 978-1-62708-185-6
... the stock is reaching the furnace temperature. Cooling from the forging operations should also be considered in terms of grade and size. Austenitic grades are usually quenched from the forge. This is done to minimize the formation of intergranular chromium carbides and to facilitate cutting and...
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
... cutting speeds, and high acceleration and deceleration capabilities. It discusses electrodischarge machining process and electrochemical machining process. The article concludes with information on die-making methods. electrochemical machining electrodischarge machining finishing forging dies...
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
... forgings from precut lengths of stock, when the dies are longer than the forging, the stock is cut to a length that allows one end to protrude from the dies ( Fig. 7 ) so that it can be held by the operator during the forging operation. After the opposite end has been upset, the extra stock for holding is...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004004
EISBN: 978-1-62708-185-6
... size, machining, descaling, cutting to length, and lubricating. It lists the advantages of the cold heading over machining. Materials selection criteria for dies and punches in cold heading are also described. The article provides examples that demonstrate tolerance capabilities and show dimensional...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000613
EISBN: 978-1-62708-181-8
... welding system was used to rebuild the worn cutting tools. Inadequate preheating and postweld heat treating resulted in a crack-prone weld-metal microstructure of brittle, untempered martensite. Fig. 748 : As-received end mills with cracked flutes. 0.38×. Fig. 749 : Fracture surface. G is the ground...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004008
EISBN: 978-1-62708-185-6
....) and smaller in diameter are cold drawn from coil stock by various methods. With one method, cold-drawn coils produced on the various machines described previously are straightened and cut into bars in a separate operation on machines designed for that purpose. Some in-line methods and equipment begin...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
... temperature quickly, and material is likely to behave differently at elevated temperatures. It plays an important role in metalworking, inertial welding, translational friction welding, and the cutting process. The latent heat comes from the phase transformation or phase change, and eddy-current heat is...
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
... hubbing. Hubbing is done by cutting the pattern into a male master plug (hub), hardening this hub, and pressing the hardened hub into a die block to make the coining impression. Highly alloyed tool steels are relatively difficult to hub. When coining dies are made from these steels, it may be necessary to...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003152
EISBN: 978-1-62708-199-3
... classifying cemented carbides. The systems most often employed by producers and users are discussed below. Almost 50% of the total production of cemented carbides is now used for nonmetal cutting applications such as metalforming dies, punches, and rolls, transportation...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... dies in a mechanical or hydraulic press. Cutting operations performed by dies in presses to produce blanks include cutoff, parting, blanking, notching, and lancing. The first three of these operations can produce a complete blank in a single press stroke. In progressive dies, two or more of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003997
EISBN: 978-1-62708-185-6
... “Closed-Die Forging in Hammers and Presses” in this Volume). For simpler shapes produced by one or two blows, the starting slugs or blanks are usually cut from extruded bars or tubes to eliminate the blocking operation. Excessive flash is produced, but it is easily trimmed and remelted. In the forging...
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: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001231
EISBN: 978-1-62708-170-2
... centers therefore use a vacuum-type chip disposal system that collects the chips as soon as they are generated. However, to use this system, cutting tools must have chip breakers. Precision dies (made of high-carbon steel or chromium-molybdenum alloy steel) should be machined in the heat-treated condition...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003985
EISBN: 978-1-62708-185-6
... some flexibility in forging shape, but the cost can be expensive and large forces induced by this process can be detrimental to TZM. Machining alloys such as IN 100, and other nickel-base alloys can be successfully lathe turned at high speeds using ceramic cutting tools. This can drastically reduce the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003989
EISBN: 978-1-62708-185-6
... forging dies but rather cutting tools that are used to quickly cut large cross-sectional billets or ingots. One basic design is a vertical plate that is pressed through the material. This form of cutting results in minimal material loss and does not require the billet to be cooled and reheated. All of...
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
... forgings, mandrel forging, or reverse/forward extrusion, can be employed. The economy of ring rolling in aluminum alloys depends on the volume, size, and contour of the forging. For some ring parts, it may be more economical to produce the shape by mandrel forging or to cut rings from hollow extruded...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.9781627081740
EISBN: 978-1-62708-174-0