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pyramid-roll type

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Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005125
EISBN: 978-1-62708-186-3
..., namely, the pinch-roll type and the pyramid-roll type. It also lists the advantages of the pinch-roll machine, as compared to the pyramid-roll machine. The article analyzes the hot forming and cold forming processes for carbon or low alloy steel. It explains the procedure for forming truncated cones...
Image
Published: 01 January 2006
Fig. 8 Rolling a truncated cone in a three-roll pyramid-type machine from a blank with preformed ends More
Image
Published: 01 December 1998
Fig. 40 Arrangement of rolls in a pyramid-type machine. (a) Entrance of flat workpiece and shape of a nearly finished workpiece, including the flat areas on the leading and trailing ends. (b) Similar, except that the workpiece was prebent to minimize the flat areas on the ends. More
Image
Published: 01 January 2006
Fig. 4 Arrangement of rolls in a pyramid-type machine. (a) Entrance of flat workpiece and shape of a nearly finished workpiece, including the flat areas on the leading and trailing ends. (b) Similar, except that the workpiece was prebent to minimize the flat areas on the ends More
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005401
EISBN: 978-1-62708-196-2
.... Other planes of importance comprise the prism planes ( { 10 1 ¯ 0 } type) and various pyramidal planes, the most important of which are the { 10 1 ¯ 1 } planes, which contain the directions consisting of the vector sum c + a , that is, the < 11 2 ¯ 3...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003270
EISBN: 978-1-62708-176-4
... with fully annealed metals. The article discusses the plastic deformation of ideal plastic metals under an indenter, by a flat punch, and by spherical indenters. The classification of the hardness tests using various criteria, including type of measurement, magnitude of indentation load, and nature...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003282
EISBN: 978-1-62708-176-4
... and Sliding Contact , ASLE Trans. , Vol 28 ( No. 3 ), 1985 , p 296 – 302 10.1080/05698198508981624 • Mulhearn T.O. , The Deformation of Metals by Vickers-Type Pyramidal Indenters , J. Mech. Phys. Solids , Vol 7 , 1959 , p 85 – 96 10.1016/0022-5096(59)90013-4 • Veldkamp...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... balls surfaces. It discusses the propagation of fatigue cracks involved in rolling contacts. The characteristics of various types of RCF test machines are summarized. The article concludes with a discussion on the various failure modes of silicon nitride in rolling contact. These include the spalling...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005144
EISBN: 978-1-62708-186-3
... deformation mechanism occurring at room temperature is twinning. Twinning is a shear deformation process where parts of one crystal are reflected across a mirror plane. The mirror plane is called a twinning plane ( Fig. 2 ). The main part of the twinning process happens in pyramidal planes (second-order type...
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
... rolling, roll forging, rotary forging, and mandrel forging are not commonly used in magnesium alloy forgings. These types of forgings must be developed specially for magnesium alloys. Open-Die Forging Open-die forging is a cost-effective process to obtain simple shapes. Usually the alloy is pressed...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006282
EISBN: 978-1-62708-169-6
... The predominant mode of plastic deformation in titanium is slip. The most common crystallographic slip planes in hexagonal (alpha, or α) titanium are the basal, prismatic, and pyramidal. The planes operating during deformation depend on alloy composition, temperature, grain size, and crystal orientation...
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
... forging using rolled bars as the starting material. In rolling, a squeezing type of deformation is accomplished by using two work rolls ( Fig. 1 ) rotating in opposite directions. The principal advantage of rolling lies in its ability to produce desired shapes from relatively large pieces of metals...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004018
EISBN: 978-1-62708-185-6
... also include internal surface imperfections, such as twins and stacking faults. Like dislocations, surface (planar) imperfections of a crystal lattice also occur in conjunction with the plastic deformation of metals, as briefly described in this section. In addition, planar-type crystal imperfections...
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
... twins (six systems), and {1122}⟨1123⟩ compressive twins (six systems). Basal slip, plus other type of pyramidal and twinning systems, may be active, depending on the material, the deformation temperature, and the deformation rate. The SCYS of an hcp crystal with easy prism slip and hard pyramidal...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005139
EISBN: 978-1-62708-186-3
... Typical bending limits for six commonly formed stainless steels Type Minimum bend radius Annealed to 4.75 mm (0.187 in.) thick (180° bend) Quarter hard, cold rolled To 1.27 mm (0.050 in.) thick (180° bend) 1.30–4.75 mm (0.051–0.187 in.) thick (90° bend) 301, 302, 304 1 2 t...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... or nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming, drop hammer...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003275
EISBN: 978-1-62708-176-4
..., and members of this institute, and also on hardness conversions previously published by the American Society for Metals and the Roll Manufacturers Institute. Source: Ref 1 Both models of Scleroscopes can be mounted on various types of bases, although the model C Scleroscope is commonly used unmounted...
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: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003276
EISBN: 978-1-62708-176-4
..., size and shape of the workpiece, specimen surface flatness and surface condition, and indent location. The article focuses on the selection for specific types of materials, such as steels, cast irons, nonferrous alloys, and plastics, and industrial applications, of hardness tests. hardness test...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003271
EISBN: 978-1-62708-176-4
... Abstract This article describes the principal methods for macroindentation hardness testing by the Brinell, Vickers, and Rockwell methods. For each method, the test types and indenters, scale limitations, testing machines, calibration, indenter selection and geometry, load selection...