1-20 of 221 Search Results for

self-opening dies

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 January 1989
Fig. 8 Modification of starting threads on chasers in self-opening dies to produce acceptable thread finish on Monel shafts. Dimensions given in inches More
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002143
EISBN: 978-1-62708-188-7
...Abstract Abstract This article discusses the types and operations of the most common machines used for die threading. The construction, types, and comparison of solid and self-opening dies are discussed. The article explains the modification of chasers for threading Monel shaft. The principal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
...) of impact energy. Controlled-Energy-Flow Forging Machines Controlled-energy-flow forging machines ( Fig. 4 c) are counterblow machines with separately adjustable gas cylinders and separate rams for the upper and lower dies; however, they do not rely on self reacting principles. The lower ram has...
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
... in the section “Effect of Temperature” in this article, workpiece temperature is a critical element in the aluminum forging process. Aluminum alloys form a very tenacious oxide coating upon heating. The formation of this coating is self-limiting; therefore, aluminum alloys do not scale to the same extent...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005142
EISBN: 978-1-62708-186-3
... and die at high-pressure areas such as the draw ring. The solution to this problem is best achieved by using die materials that are self-lubricating, such as graphite or an overlay of colloidal suspension of graphite on an asbestos paper carrier. The technique of using consolidated graphite as a self...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... in.). The savings in metal exceeded the cost of welding, but if production needs had been fewer than 10,000 pieces, the savings in metal would not have paid for the welding and the blanking dies. The production quantity was 300,000 rails made in lot sizes of 20,000 pieces. Open Shapes A blank with a large...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
... punches. To ensure that the force at the points of contact and release is sufficient to accomplish the stripping, stripper springs must exert the calculated force in the open-die position (not just in the closed-die position). Self-Contained Tools Piercing tools can also be purchased as individual...
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
..., which is critical to produce uniform strain and prevent buckling of the billet. Some variations of this basic design use self-centering bevels or alignment fixtures to improve the uniformity of the upset. Die Material Depending on the die temperature during forging and the stiffness...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009154
EISBN: 978-1-62708-186-3
...-piercing semi-tubular rivet splits open and the undercut is formed (view 3). Again, with this positive lock, radial compressive stresses remain, which create the nonpositive lock important for cyclic resilience (view 4) ( Ref 1 , 2 ). The self-piercing riveting can also be used to join dissimilar...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002187
EISBN: 978-1-62708-188-7
... been cut between grinds. For round dies, one manufacturer recommends a rake of 15 to 20° with narrow cutting sections and eccentric relief for an 11 mm ( 7 16 in.) diameter and larger. Self-opening dies or solid adjustable dies are recommended for cutting the larger-size threads. Speed...
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
... thread-forming and self-locking screws. The preferred polygonal shape is trilobular and is produced in flat-die machines. In contrast to thread cutting and thread grinding, thread rolling does not remove metal from the work blank. Rather, thread rolling dies displace the surface metal of the blank...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002142
EISBN: 978-1-62708-188-7
... of a cylindrical or conical blank. Polygonal blanks are also thread rolled for the purpose of fabricating thread-forming and self-locking screws. The preferred polygonal shape is trilobular and is produced in flat die machines. In contrast to thread cutting and thread grinding, thread rolling does not remove...
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
... headers have two dies. The punches in multistroke machines usually reciprocate so that each contacts the workpiece during a machine cycle. They are also further classified as open-die headers or solid-die headers, based on whether the dies open and close to admit the work metal or are solid. In single...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005112
EISBN: 978-1-62708-186-3
... presses are needed for satisfactory operation in achieving the long life and extremely close clearances of expensive dies. Intricate dies require presses that run with better guiding and deflection characteristics. One example of this tooling is the progressive die, which combines many operations in one...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004006
EISBN: 978-1-62708-185-6
... (in part) from the development of reliable, high-pressure, variable-delivery oil pumps, some of which operate at pressures over 34.5 MPa (5 ksi). Direct-drive presses are self-contained, and they require less floor space and are less expensive than accumulator-driven presses. More important, direct-drive...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003184
EISBN: 978-1-62708-199-3
...-temperature deformation. The region of low ductility often occurs at temperatures around 0.5 of the melting point, as measured on the Kelvin scale. The dividing temperature has a physical basis. At hot-working temperatures, self-diffusion rates are high enough for recovery and recrystallization to counteract...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003993
EISBN: 978-1-62708-185-6
.... The region of low ductility often occurs at temperatures around 0.5 of the melting point as measured on the Kelvin scale. The dividing temperature has a physical basis. At hot-working temperatures, self-diffusion rates are high enough for recovery and recrystallization to counteract the effects of strain...
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
... material used, namely, inorganic and organic zinc-rich coatings. Common inorganic binders such as post-cured water-based alkali metal silicates, self-cured water-based alkali metal silicates, and self-cured solvent-based alkyl silicates, are reviewed. The article also compares inorganic and organic zinc...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
...” in this article). Injection of Wax Patterns Wax patterns are generally injected at relatively low temperatures and pressures in split dies using equipment specifically designed for this purpose. Patterns can be injected in the liquid, slushy, pastelike, or solid condition. Injection in the solid condition...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006501
EISBN: 978-1-62708-207-5
... or to other materials can be grouped into six general categories: Nails, staples, and other driven fasteners Solid, semitubular, hollow, and self-piercing rivets Threaded fasteners Blind fasteners (meaning that a hole or joint is accessible from one side only) Swaged collar fasteners (also...