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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270197
EISBN: 978-1-62708-301-0
... Abstract One of the rotor bearings in an electric motor failed, producing excessive vibrate. The bearing was removed and disassembled, revealing craters and bruises on the inner ring raceway and balls along with evidence of melting and burning of metal. Scanning electron microscopy revealed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110513
EISBN: 978-1-62708-247-1
... voltage generated and was damaged within short time. After repair, the failures never re-occurred: After mileage of more than 10000 km, enough dirt and dust in the motor cabinet had adhered to the rubber tubes and made them electrically dissipative – thus replacing the missing ground connection...
Book Chapter

By Eren Billur
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400181
EISBN: 978-1-62708-316-4
... (tank), electric motor, pump, valves, and cylinder ( Fig. 12.1 ). Hydraulic presses are more versatile than mechanical presses, because the force and stroke can be controlled easily. These presses are load-restricted machines; that is, their capability for carrying out a forming operation is limited...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300163
EISBN: 978-1-62708-323-2
...) Incredibly, copper is one of the most rubbed metals when used as a commutator in electric motors. The copper commutator rotates in contact with graphite brushes and the graphite brush material is transferred to the copper. Thus, graphite is really running self-mated. The friction is low, if it was high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420289
EISBN: 978-1-62708-310-2
... diagrams. aluminum alloys electric motor housings hacksaw blade phase diagrams wrought stainless steel ALLOY PHASE DIAGRAMS are useful to metallurgists, materials engineers, and materials scientists in four major areas: (1) development of new alloys for specific applications, (2) fabrication...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400145
EISBN: 978-1-62708-316-4
... and mechanical press is the drive mechanism (see Fig. 9.2 ). A mechanical press drive consists of an electric motor, a flywheel, a clutch/brake, a drive shaft, a connection (also called a pitman arm or connecting rod), and a slide (ram) guided by the gibs ( Fig. 10.1 ). Depending on the design, a press may have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270072
EISBN: 978-1-62708-301-0
... landings had taken place. The heavy rubbing on the inside of the hub is possible only if the assembly is not perfectly aligned. From a study of the section drawing supplied, it could be inferred that an improper assembly of electric motor and the roller bearing can cause this type of failure. This can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
... motor is built directly to the screw and on the frame, above the flywheel. The screw is threaded into the ram or the slide and does not move vertically. To reverse the direction of flywheel rotation, the electric motor is reversed after each downstroke and upstroke. The hammer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... summarizes the latest developments in servo-drive presses. In an electric servo motor, the angular position of the output shaft is determined by the duration of the current pulses provided by the controller. Thus, the output shaft can be rotated in both directions, can be stopped with precision at any...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980009
EISBN: 978-1-62708-342-3
... and shaped bars as well as simple profiles for bus bars are, however, produced by extrusion ( Fig. 2.76 ). They are used in electrical switch gear or for slip rings in electric motors. Hollow sections are used for water-cooled conductors in heavy duty transformers, in generator stators and strong...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720117
EISBN: 978-1-62708-305-8
...) machines are electromechanical devices that use a large actuator screw threaded through a moving crosshead ( Fig. 7 ). The screw is turned in either direction by an electric motor through a gear reduction system. The screws are rotated by a variable control motor and drive the moveable crosshead up or down...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
... forces ( Fig. 12.20 ). It is mounted with the gear box in a support bolted to the foundation frame. The forging box contains four rotatable adjustment housings in which the eccentric shafts are mounted. The eccentric shafts, which are driven by an electric motor through a gear system, actuate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060001
EISBN: 978-1-62708-261-7
... by General Electric in the United States. The alloy upgraded the efficiency of electric motors and transformers. A nickel-iron storage battery is invented by Thomas A. Edison. The first motorized machine tool (presumably electric) is introduced. The oxyacetylene torch for cutting steel is invented...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220241
EISBN: 978-1-62708-341-6
... in power transformers and electric motors. Such steels would tend to heat dramatically in the magnetic field were it not for the fact that they are in the form of a laminated structure. By this means, the eddy-current paths are minimized to keep losses low. The thickness of the individual laminations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410091
EISBN: 978-1-62708-280-8
... … X X … 354 T61, T62 Aircraft superchargers, jet engine parts, impellers, timing gears, electric motor fans and blowers … … … … X X … … X … 355 C 355 T6, T61 T62 Aircraft and missile parts XX XX … … … … … XX XX … 359 T61, T62 Chemical and sewage fittings, dairy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040107
EISBN: 978-1-62708-300-3
... includes in general: (a) the losses in the electric motor, E e , (b) the friction losses in the gibs and in the driving system, E f , and (c) the losses due to total elastic deflection of the machine, E d . The following two conditions must be satisfied to complete a forming operation: first, at any...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220047
EISBN: 978-1-62708-341-6
... since become standard. Fig. 4.15 Fully enclosed, horizontal motor-generator set that is water cooled Source: Westinghouse Electric Corp. Fig. 4.16 Vertical motor-generator set Source: TOCCO, Inc. Frequencies generated using motor-generators are determined by rotational speed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050001
EISBN: 978-1-62708-311-9
.... In addition, the coils could be grounded on one side, so arcs that occurred with high-voltage coils were practically eliminated. From the 1940s through the 1950s, the use and application of large motor generators and RF oscillator induction power supplies continued. In the mid-1950s General Electric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400001
EISBN: 978-1-62708-258-7
... steel to remove oxygen (deoxidize). As a result of deoxidation, can form silicate stringers (silicon dioxide inclusions). Does not form a carbide in steels. Improves oxidation resistance. Added to special steels to improve electrical and magnetic properties as well as hardenability. Increases...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220001
EISBN: 978-1-62708-341-6
... Abstract Electromagnetic induction, or simply "induction," is a method of heating electrically conductive materials such as metals. It is commonly used for heating workpieces prior to metalworking and in heat treating, welding, and melting. This technique also lends itself to various other...