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die threading

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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 Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... A press that clamps the sections together during the heating and subsequent cooling cycles A brass electrode or die that is mounted on an aluminum plate, which applies the electrical energy directly to the plastic ( Ref 48...
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
... geometry and material as well as processing conditions (for example, workpiece and die temperatures and lubrication). Because of the complexity of many metalworking operations, models of various types, such as analytical, physical, or numerical models, are often relied upon to design such processes. This...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005333
EISBN: 978-1-62708-187-0
..., proportionately smaller studs can be used safely. The ability to cast threads is a major advantage of the die casting process. Cast threads should be specified wherever their use reduces cost over that for cut threads. Most external threads can be cast. It is common practice to cast coarse external threads...
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 Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003144
EISBN: 978-1-62708-199-3
... alloying element in copper, aluminum, magnesium, and other alloys; in wrought zinc alloys; and in zinc chemicals. The zinc coating applications of hot dip galvanizing, electrogalvanizing, plating, and thermal spray are presented. The use of zinc alloys in both gravity and pressure die castings is discussed...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001315
EISBN: 978-1-62708-170-2
... Abstract Zinc and zinc alloys require surface engineering prior to coating or use to improve adhesion and corrosion resistance. Die-cast zinc parts, in addition, must be trimmed and finished to remove flash and parting lines. This article covers zinc cleaning procedures as well as coating and...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005219
EISBN: 978-1-62708-187-0
... vents as required. Coat the die faces with a protective coating to prevent rust. Flush and/or drill out the water lines to remove lime buildup. Chase water line threads to ensure a good seal. Verify steel hardness at a heavy die area every 25,000 shots. Check holder block and ejector...
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
... Abstract Hammers and high-energy-rate forging machines are classified as energy-restricted machines as they deform the workpiece by the kinetic energy of the hammer ram. This article provides information on gravity-drop hammers, power-drop hammers, die forger hammers, counterblow hammers, and...
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
... of reduction, feed rate, die taper angle, surface contaminants, lubrication, and material response on swaging operation. The article discusses the applications for which swaging is the best method for producing a given shape, and compares swaging with alternative processes. It concludes with a...
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
... of several dies. After each stroke, the ejector pin pushes the workpiece out of the die. The transfer mechanism grips it and advances it to the next station. Some of the progressive cold-heading machines have special die stations for performing finishing operations such as trimming, pointing, thread...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... 186 etch. Original magnification: 200× These longitudinal discontinuities in bar or wire stock are caused by imperfections in the drawing die. They are similar to folds and can act as stress raisers during forming processes. Seams have blunt tips. The two sides of a seam do not necessarily...
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
...× Fig. 764 Surface of a catastrophic fracture in an open-header die of AISI W2 tool steel that was case carburized to 0.95% C at the surface, heat treated in the range of 815 to 845 °C (1500 to 1555 °F), and water quenched. This die was used for cold forming and upsetting square heads. Upsetting...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003015
EISBN: 978-1-62708-200-6
... extruder to melt plastic pellets or powder and force the resulting melt through a die. The extruded shape comes out of the die at a continuous rate and is then cooled. This process is called continuous extrusion. The extruder is actually a screw conveyer, which carries the cold plastic material forward...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003096
EISBN: 978-1-62708-199-3
..., to produce a smoother surface or closer dimensional tolerances, or to modify mechanical properties. The process most commonly used is cold drawing, in which the descaled hot-worked tube is plastically deformed by drawing it through a die and over a mandrel (mandrel drawing) to work both exterior and...
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.a0003998
EISBN: 978-1-62708-185-6
... practice in recent years due to the complications associated with its radioactivity, although the high-temperature properties of thorium-bearing alloys are impressive. Silver (Q) and copper (C) containing alloys have also been developed, and recent work in the area of high-pressure die-casting alloys has...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003192
EISBN: 978-1-62708-199-3
... Hardness, HB Condition Speed (a) , fpm, at a pitch, threads/in., of: High-speed steel tool material, AISI 7 or less 8–15 16–24 Over 24 Resulfurized steels 1116, 1117, 1118, 1119, 1211, 1212 100–150 Hot rolled or annealed 25 50 65 70 M10, M7, M1 150–200 Cold drawn 30 55 70...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003972
EISBN: 978-1-62708-185-6
... structures, and surfaces that are optimally near the final part requirements. For example, casting (particularly die casting) may be able to produce more complex geometric features, but the surface roughness and tolerances achievable are higher than those in cold forming. In addition, the mechanical...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003132
EISBN: 978-1-62708-199-3
... (Part 6, Specifications Index), published by the Copper Development Association Inc. Extrusion of copper and copper alloy tube shells is done by heating a billet of material above the recrystallization temperature, and then forcing material through an orifice in a die and over a mandrel held in...