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tangential rolling

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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
... Abstract This article discusses the three characteristics that are important in evaluating and selecting metals for thread rolling, namely, rollability, flaking, and seaming. It reviews the capabilities and limitations of flat-die rolling, radial-infeed rolling, tangential rolling, through-feed...
Image
Published: 01 January 2005
Fig. 14 Operating principle of tangential-feed thread rolling More
Image
Published: 01 January 1989
Fig. 14 Operating principle of tangential-feed thread rolling More
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
... Abstract Thread rolling is a cold-forming process for producing threads or other helical or annular forms by rolling the impression of hardened steel dies into the surface of a cylindrical or conical blank. Methods that use cylindrical dies are classified as radial infeed, tangential feed...
Image
Published: 01 January 1996
of a point contact. At different depths below the contact surface, the variation of shear stresses will be similar, but of different magnitude for pure rolling. When sliding is superimposed with the rolling, the tangential friction forces at the surface modify the range of shear stresses from the pure More
Image
Published: 01 January 1996
Fig. 2 Variations in maximum shear stress as a function of depth for three different friction coefficients; (a) μ ≈ 0, (b) 0 ≤ μ ≤ 0.11, and (c) μ ≥ 0.11. This figure is for static loading, but the range of shear stress versus depth is also at or very near the surface for tangential forces More
Image
Published: 01 August 2018
Fig. 12 Magnetic field dependence of the amplitude of the first antisymmetric Lamb mode generated by a tangential field meander coil electromagnetic acoustic transducer in steel (a hot rolled iron plate). The solid broken line is a theoretical prediction based on the measured magnetostrictive More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002401
EISBN: 978-1-62708-193-1
..., the tangential friction forces at the surface modify the range of shear stresses from the pure rolling situation at any given location at and below the surface. If normal forces act alone, that is the friction coefficient is zero, the stresses would be ( Ref 6 ): σ 1 m a x = − p o...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004014
EISBN: 978-1-62708-185-6
... compressive radial force versus axial force), will combat the wave action of the preform. Another option is to change the contact area of this roller, which changes the tangential force. Process parameters change depending on the material being rolled. Large diameter rollers with a large contact area...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003279
EISBN: 978-1-62708-176-4
... developed them have come from different backgrounds with different experiences with wear. No one scheme is universally accepted, but most systems have similar features. For example, mechanical wear can be classified by the type of relative motion: (a) tangential motion (sliding), (b) impact, and (c) rolling...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002150
EISBN: 978-1-62708-188-7
... multiplied by wheel speed and a constant, determines the power used by the operation. The tangential and normal forces are related by a coefficient of friction; therefore, in production grinding, in which the normal force is almost never known (without a dynamometer of some type), the tangential force can...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006397
EISBN: 978-1-62708-192-4
... (that is, rolling in the absence of an imposed tangential force) is made up of three components ( Ref 33 ): Those arising from microslip and friction at the interface Those due to anelastic properties of the materials Those due to surface roughness Microslip at the Interface Microslip...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002373
EISBN: 978-1-62708-193-1
... , where B is the minor axis length of the contact ellipse and the usual direction of rolling motion. Note in Fig. 8 that the maximum shear stress depth is about the same as the dimension of B. However, with increased traction or tangential force, the maximum shear stress moves closer to the surface...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006721
EISBN: 978-1-62708-210-5
..., Elongation (a) , % MPa ksi MPa ksi Die forgings, T6 Axis parallel to grain flow 303 44 255 37 14 (coupon) 10 (forging) Axis not parallel to grain flow 303 44 255 37 6 (forging) Rolled rings, T6 and T652 Tangential 303 44 255 37 5 Axial 303 44 241 35 4...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003262
EISBN: 978-1-62708-176-4
... on unsymmetrical loading of straight beams can be found in Ref 2 . In a majority of testing applications such as three-point bending, roll bending, and press-brake forming, the applied bending moment varies along the length of the specimen. Because shear force V = ( dM / dx ), such variations in the bending...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005408
EISBN: 978-1-62708-196-2
... VPSC steps until stable values for σ t and thereby σ r are achieved. Equation 10 is expressed in the frame defined by radial direction ( r ), tangential direction ( t ), and through-thickness direction ( z ). This frame is related to the standard rolling frame {RD, TD, ND}through a rotation...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006403
EISBN: 978-1-62708-192-4
... and its quantity value. Depending on the kinematic conditions (i.e., sliding, rolling, spinning, or impact), the frictional force can be tangential ( F T ) that resists sliding or a frictional torque that resists rolling or spinning. The most commonly used friction law in sliding motion...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... to fretting wear. fretting wear impact fretting mechanical components normal load residual stress rolling-element bearings slip surface finish vibration frequency FRETTING is a wear phenomenon that occurs between two mating surfaces; initially, it is adhesive in nature, and vibration...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005161
EISBN: 978-1-62708-186-3
... is done in various types of operations and machines such as press brakes or four-slide machines. Plates and sections are often bent in three-roll benders into complete circles. Roll forming is another type of bending operation that allows mass production of two-dimensional corrugated sheet, architectural...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006596
EISBN: 978-1-62708-210-5
... transverse 400 58 340 49 1 175–200 mm (7.001–8.000 in.) thick Longitudinal, long transverse 405 59 350 51 2–6 Short transverse 395 57 330 48 1 Rolled rings, T6, T652 ≤63 mm (≤2.500 in.) thick Tangential 450 65 380 55 7 Axial 425 62 380 55 3 Radial 415 60 360...