1-20 of 168 Search Results for

through-feed rolling

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
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
..., through feed, planetary, and internal. This article focuses on the capabilities, limitations, and machines used for these methods. It describes the three characteristics, such as rollability, flaking, and seaming, used in evaluating and selecting metals for thread rolling. The article explores the factors...
Book Chapter

By Robert Bolin
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003982
EISBN: 978-1-62708-185-6
... ring rolling. Typical FEM models consider a straight forging pass. In reality, the forging pass in a ring mill is curved, meaning the volume reduction through a curved pass is slightly different from that in a straight pass. This volume error is not significant in a single revolution, but in multiple...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004009
EISBN: 978-1-62708-185-6
... rolling fabrication nonferrous materials shapes slabs steel universal rolling ROLLING OF METALS is perhaps the most important metalworking process. More than 90% of all the steel, aluminum, and copper produced—in 2001, more than 900 million tons of material worldwide—go through the rolling...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005221
EISBN: 978-1-62708-187-0
... Abstract This article introduces filling and feeding concepts from the general perspective of what constitutes good casting practice. It briefly reviews concepts that may help clarify and quantify objectives for more effective mold-filling designs. The article describes the preprimed filling...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003981
EISBN: 978-1-62708-185-6
... both types, the driving motor is mounted at the top of the main housing. The motor drives a large flywheel by means of V-belts. In turn, the flywheel drives the roll shafts, to which the roll dies are attached, through a system of gears. Fig. 2 Modern roll forging machine with outboard housing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... press to be selected also depend upon the method and direction of feeding, the size of sheet, coil stock, blank, or workpiece to be formed, the type of operation, and the strength and other characteristics of the material being formed. Material or workpiece handling and die accessibility generally...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
.... The blast furnace runner also allows a large reaction area between the reagents and the hot metal. The silicon, sulfur, and phosphorus can be lowered by a basic refractory lining of the mixer and by forming a lime-rich oxide slag. An active mixer practice could thus be used by feeding a combined...
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
.... The second stage recompresses the melt, and the second metering zone of the feed screw provides proper head pressure to extrude the melt through the die at the proper rate ( Fig. 4 ). Fig. 4 Extruder with two-stage screw and vent. Example is an 89 mm (3 1 2 in.) instrumented laboratory...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005286
EISBN: 978-1-62708-187-0
.... Thickness is established by the roll gap. Molten metal contacts the rolls behind the roll nip so that solidification precedes the exit point and an element of extrusion is included in the solidification process. The amount of setback of the feed tip through which molten metal flows into the roll gap is a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
... rolls to push straightened wire through restricting guides against a coiling point and around a fixed arbor into a coil. At the end of the coiling cycle, the feed rolls stop and a cutoff mechanism actuates a knife to sever the completed spring against the arbor as an anvil. Mechanisms also are designed...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... capable of superior heat dispersal during the chip-forming process. Collectively, these properties permit the user to increase the rate of metal removal while often obtaining longer tool life ( Fig. 4 ). Reduced operating time to produce a finished part, and reduced machine downtime through less...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000610
EISBN: 978-1-62708-181-8
... these steels. The austenitic stainless steel components include spring wires, preheater-reactor slurry transfer lines and gas lines of coal-liquefaction pilot plants, oil feed tubes and suction couch rolls of paper machines, cortical screws and compression hip screws of orthopedic implants, and Jewett...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003133
EISBN: 978-1-62708-199-3
.... Prior to rolling, bars are heated to ∼925 °C (1700 °F) in a neutral atmosphere and then rolled on a continuous mill through a series of reductions to yield round rod ∼6 to 22 mm ( 1 4 to 7 8 in.) in diameter. The hot-rolled rod is coiled, water quenched, and then pickled to remove...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... powerful machine in general use for the production of impression-die forgings by impact pressure. A heavy anvil block supports two frame members that accurately guide a vertically moving ram; the frame also supports a cylinder that, through a piston and piston rod, motivates the ram. In its lower face, the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... binder/plasticizer content of the powders, which is considerably higher in order to produce a flexible, continuous roll of tape. Basically, the process involves a powder-feed system, which continuously replenishes a reservoir above a pair of polished steel rollers that rotate in opposing directions...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004028
EISBN: 978-1-62708-185-6
... complex forming operations, through the use of the finite element method, are also presented. axial deformation body centered-cubic sheets deformation texture finite element method forming plastic deformation rolled face-centered-cubic zirconium METALS are polycrystalline aggregates, that...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009004
EISBN: 978-1-62708-185-6
... before and after each pass for calculation of the longitudinal, ε 1 , and vertical, ε 2 , strains. Different reductions in area were achieved by feeding various bar sizes and by changing roll separation distances. A transverse slice was cut from the bars after each pass for measurement of the cross...
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
... stage, in which metallic zinc is produced, is either thermal or electrolytic. For the thermal processes, which require a granular product, some form of sintering is used almost exclusively to produce a coarse feed; however, for electrolytic zinc production there is no requirement for a coarse granular...
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
... annealed. (b) Spheroidize annealed. (c) Annealed Metal flow during rotary swaging is not confined to one direction. As shown in Fig. 3 , more metal moves out of the taper in a direction opposite to that of the feed than through the straight portion during each blow. The partitioning of...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005417
EISBN: 978-1-62708-196-2
... v Rolling velocity v rel Relative velocity α s Area fraction of the gaps formed from the through-thickness cracks at the interface and filled with fresh metal γ Pressure viscosity coefficient δ Temperature viscosity coefficient δ ox Scale thickness δ oxt Scale...