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direct-drive rotary friction welding

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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005596
EISBN: 978-1-62708-174-0
... Abstract This article provides information on the practice considerations for the inertia and direct-drive rotary friction welding processes. It presents the tooling and welding parameter designs of these processes. The article discusses the welding of different material family classes...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005578
EISBN: 978-1-62708-174-0
.... The American Welding Society categorizes two basic variations of rotary friction welding as direct-drive friction welding (also commonly referred to as continuous-drive friction welding) and inertia friction welding (also commonly referred to as stored energy friction welding). Both methods employ high...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001447
EISBN: 978-1-62708-173-3
... considerations for the two most common variations: inertia welding and direct-drive friction welding. Direct-drive friction welding differs from inertia welding, primarily in how the energy is delivered to the joint. The article discusses the parameter calculations for inertia welding and direct-drive friction...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001382
EISBN: 978-1-62708-173-3
... were mounted ( Fig. 4 ). The welding head, which consists of the drive spindle for rotating the ring, is driven by a 370 kW (500 hp) direct-current motor. The pipe clamps operate hydraulically, as does the ring compression. Additional pipe support and alignment are provided by collets located near...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005515
EISBN: 978-1-62708-197-9
... friction welding. The article describes analytical thermal models and numerical thermal models for rotational friction welding. It concludes with information on the modeling of residual stresses. direct-drive rotary friction welding friction inertia friction welding residual stress rotational...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001383
EISBN: 978-1-62708-173-3
... be used. If both approaches are called for, then interpass machining may be required to ensure sound adhesion properties. Equipment The earliest feasibility studies were conducted on a modified, continuous-drive, friction-welding machine ( Ref 12 ). However, further practical investigations...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... to accelerate the flywheel and the screw assembly, and it converts the angular kinetic energy into the linear energy of the slide or ram ( Fig. 7 ). Fig. 7 Two basic designs of screw presses. (a) Friction-drive press. (b) Direct-electric-drive press Friction-Drive Press In the friction-drive...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006034
EISBN: 978-1-62708-175-7
...), direct-current or eddy-current control devices are preferred. The motor and drive must be totally enclosed to prevent contamination by metal powder dust. Gearing systems usually are either single-reduction ( Fig. 1 ) or double-reduction ( Fig. 2 ) arrangements. Single-reduction gearing frequently...
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
... the flywheel and the screw assembly, and it converts the angular kinetic energy into the linear energy of the slide or ram. Figure 21 shows two basic designs of screw presses. Fig. 21 Two common types of screw press drives. (a) Friction drive. (b) Direct electric drive. Advantages and Limitations...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
...). The bar to be straightened is supported at points A and B with the convex side of the bow or kink toward point C. Sufficient force is applied at C to cause the bar to become bowed in the opposite direction. Rotary and Roll Straightening Rotary and roll straightening are cold-finishing mill...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006386
EISBN: 978-1-62708-192-4
... and rotary power harrow lead to shorter, nonparallel marks caused by soil particles that can rotate and translate at an angle with respect to the mean direction of movement of the tool relative to the soil. Because the material properties of the tools and physical properties of the soil are similar...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006500
EISBN: 978-1-62708-207-5
... Friction surfacing A very similar, but much older, process is referred to as rotary friction welding. In this process, two metallic workpieces are rotated in opposite directions, then forced end-to-end. The relative motion between the rotating pieces produces friction heating to locally soften them...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005113
EISBN: 978-1-62708-186-3
... the desired control and direction of flow either into or out of the cylinder. Fig. 8 Hydraulic press brake with 1.8 m (6 ft) bed length and 440 kN (50 tonf) load capacity with a 4 kW (5 hp) motor Fig. 9 Drive system of a hydraulic press brake The rotary action of the motor...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... Abstract This article discusses failures in shafts such as connecting rods, which translate rotary motion to linear motion, and in piston rods, which translate the action of fluid power to linear motion. It describes the process of examining a failed shaft to guide the direction of failure...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005126
EISBN: 978-1-62708-186-3
.... More elaborate controls can be used, such as a direct current motor drive with feedback control to match stock speed with machine speed. Elaborate controls are expensive and should not be considered unless they are needed to meet special workpiece requirements. Stock reels are available...
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
...-reduction twin gear drive ( Fig. 14d ) is usually 10 to 30 strokes per minute, which provides exceptionally steady pressure. Slide Actuation in Mechanical Presses Rotary motion of the motor shaft on a mechanical press is converted into reciprocating motion of the slides by a crankshaft, eccentric...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005155
EISBN: 978-1-62708-186-3
... during deep conical ange for a countersunk head rivet. double-crank press. A crank press in which the drawing or pressing operations by preventing slide is driven by two connections. metal-to-metal contact of the workpiece and direct (forward) extrusion. See extrusion. double-drive eccentric...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006429
EISBN: 978-1-62708-192-4
...-balanced structurally ( Ref 94 ). The size of the compressors is categorized from medium to large. Discharge valves are unnecessary. Direct drive type compressors splash the compressor oils into the pressure chamber. The supplied oils contribute toward removing compressive heat, sealing the gap...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006427
EISBN: 978-1-62708-192-4
...-rod operated, center-pivoted rocker, finger follower, direct acting bucket follower, and roller follower. Other designs such as rotary or sleeve valves have proved difficult to lubricate, cause excessive oil consumption, have poor sealing properties and generate excessive friction. Fig. 11...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000606
EISBN: 978-1-62708-181-8
... Fig. 230, 231 In-service rotary bending fatigue fracture of automotive axle shaft (direct-on bearing design) due to improper heat treatment. The modified AISI 1050 part was induction hardened and tempered to 60 HRC min at the bearing diameter. However, the hardened zone did not extend...