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Use of Glow Discharge Nitriding for Raising the Surface ...

2019-10-15 · Precision nickel alloy 40KhNYu-VI used for fabricating nonmagnetic precision bearings is studied after nitriding in glow discharge in an experimental facility at a high temperature (730 and 900°C) and in commercial equipment at 540°C. The effect of the temperature and duration of nitriding and of the mode of heat treatment on the structure and hardness of the surface layer obtained is ...

Evaluation of arc quenching characteristics of various ...

2017-11-7 · A gas circuit breaker uses SF 6 gas as an arc quenching medium because it has quite a high arc-quenching and current interruption ability. However, it has also been specified as a greenhouse gas because it has a global warming potential (GWP) that is 22 800 times greater than that of CO 2 nsequently, it is necessary to reduce the amounts of SF 6 released into the atmosphere by …

dry coke quenching, air pollution and energy: a status …

2018-6-14 · Countries presently using dry quenching equipment de-veloped by the Sulzer brothers and/or the U.S.S.R. include England, West Germany, Finland, France, South Africa, Czechoslovakia, East Germany, Switzerland, Holland, and the Soviet Union.3-4 Description of Dry Quenching Dry quenching uses inert gases as a medium to collect

Ignition and Flame Quenching of Quiescent Fuel Mists

during a spark discharge is only 0.02 mm. This is clearly negligibly small in com-parison with the size of the spark kernel itself, which usually is larger than 2 mm in diameter. Apparatus A diagram of the test facility is shown in figure 1. Essentially, it comprises a vertical steel tube, 20 cm in diameter, through which air is induced to flow ...

RADIATION DETECTORS AND SURVEY INSTRUMENTS: …

2012-7-30 · E. Quenching the Discharge: 1. As positive ions migrate to the cathode and are neutralized, an additional electron can be emitted as a result of this neutralization. This additional electron will result in another discharge unless it is quenched.

Electric Discharge Jigs | MISUMI Malaysia

Electric discharge jigs are jigs that hold workpieces and are used for electric discharge machining in metalworking. Electric discharge machining is a method of mechanical machining to remove part of the surface of a workpiece by repeated arc discharging between electrodes and the …

DISCHARGE / FLAME SENSOR UVTRON

Average discharge current A Peak current B Operation ambient temperature Discharge starting voltage (DC) Discharge sustaining voltage (DC) Sensitivity C Background D Estimated life E Supply voltage (DC) Average discharge current Quenching time F Max. Typ. Typ. Max. Min. 1 420 3 50 260 185 15000 5 325 ± 25 2 5.2 E678-9C 5 575 440 330 480 500 ± ...

Electric Discharge Jigs | MISUMI India

Electric discharge jigs are jigs that hold workpieces and are used for electric discharge machining in metalworking. Electric discharge machining is a method of mechanical machining to remove part of the surface of a workpiece by repeated arc discharging …

300435ENEU Process Equipment Catalog

2020-7-16 · PROCESS EquIPMEnT CATAlOG PROCESS EquIPMEnT CATAlOG 2 Air-Operated Double Diaphragm Pumps Model Overview ... Metal Husky 2150 Plastic Husky 2150 Metal Husky 3300 Plastic Husky 3300 Metal Connection Size 6.3 mm (1/4 in) 9.4 mm (3/8 in) 12.7 mm (1/2 in) and 19.1 mm ... Discharge Pressure 7.0 bar (0.7 MPa - 100 psi) 7.0 bar (0.7 MPa - 100 psi) 7.0 ...

SM INDO | HEAT TREATMENT QUENCHING MC

Roller Quenching ( MC-RQMC ) Specification. Designed & manufactured for metal roller quenching process. Overall dimension : Width 2260 mm x Depth 1840 mm x Height 1595 mm. Full automatic quenching process with : Auto clamping work piece inside quenching box. Work piece auto rotating by gear motor with brake and rotation speed adjustable control.

Boiling liquid expanding vapour explosions: dynamic re ...

2019-3-26 · The pressure vessel was constructed from an aluminum tube (76..2 mm ID, 533 mm L) with tempered glass windows (4 - 140 x 64 mm) to allow for video and time-sequenced still photography (76..2 mm ID, 533 mm L) with tempered glass windows (4 - 140 x 64 mm) to allow for video and time-sequenced still photography (Figure 2). The ends of the vessel

The third harmonic frequency

2021-2-16 · The increasing use of non-linear equipment, such as discharge lamps and computers, causes problems for networks and other equipment because of their generation of third harmonics. A non-linear load generates a 150 Hz harmonic current in the network. The third harmonic can generate a current in the neutral conductor

Experimental study on the partial discharge and AC ...

2021-3-12 · Experimental study on the partial discharge and AC breakdown properties of C 4 F 7 N/CO 2 mixture ISSN 2397-7264 ... studies on the insulation and arc-quenching performance of C 4F7N have achieved specific results. Nechmi et ... radius of the brass sphere electrodes is 25 mm, and the electrode distance is 3 mm. The needle tip part of the needle ...

Common mode Noise Filters EXC24CG

2020-9-30 · Small and thin(L 1.25 mm×W 1.00 mm×H 0.50 mm) RoHS compliant AV equipment (LCD-TV, DVD/Blu-ray drives), Information equipment (PCs, HDD), Communications equipment (Mobile phones, Smartphones) Noise suppression of high-speed …

1 A Non-Intrusive Partial Discharge Measurement System ...

2018-6-29 · point, quenching the discharge and inhibiting any new discharge until the space charge dissipates [2]. Only recently, with the advent of high-speed digital recording equipment, is it possible to make wideband recordings of typical breakdown events …

THE INFLUENCE OF FLOW PARAMETERS ON MINIMUM …

2020-2-23 · the electrodes. However, with a glow discharge most of the energy, typically about 60 percent, is concentrated in the vicinity of the cathode. Therefore the shifting of the positive eoluum away from the quenching action of the electrodes is much more beneficial for …

Electric Discharge Jigs products | MISUMI South East Asia

Electric discharge jigs are jigs that hold workpieces and are used for electric discharge machining in metalworking. Electric discharge machining is a method of mechanical machining to remove part of the surface of a workpiece by repeated arc discharging between electrodes and the …

Partial Discharges in Electrical Insulation

2016-6-20 · Discharge (stator winding example) Vp-g C in C in V air C air Vp-g 0 V Potential difference (voltage) builds across an air-filled void due to capacitive voltage divider PD occurs if E = V/d > 3kV/mm ( i.e., electrical stress exceeds electrical breakdown strength …

Probe Design to Characterize Heat Transfer during ...

2020-6-8 · 0.864 mm (0.034 inches) in diameter were machined at approximately 45° to the bar axis by electrical discharge machining (EDM). Chromel-alumel (type K) thermocouples sheathed in Inconel with an outer diameter of 0.813 mm (0.032 inches) and with …

COKE OVEN MACHINES

2021-6-16 · quenching cars have been installed to date. Both machines can be self-propelled or locomotive driven. The locomotives are part of the Paul Wurth portfolio. The conventional quenching car is a fixed sloped bottom car with an either pneumatically or hydraulically operated discharge gate. The flap opening mechanism is self-locking, so that no

X-ray Determination of Compressive Residual Stresses in ...

2021-2-3 · 20 20 mm and 100 mm in length. In order to measure the cooling curve and to analyze the severity of the cooling at different depths, 3 thermocouples were used. Blind holes of Ø 1 mm were made with electrical discharge machining (EDM) up to a middle length at 1/2 and 1/4 of the thickness and 1 mm below the surface.

Midterm results after atherectomy-assisted angioplasty of ...

Purpose: Prospective evaluation of the 3- and 6-month results after atherectomy of below-knee arterial lesions with a reference diameter of at least 2.0 mm with use of the Silverhawk device. Materials and methods: Fifty-two below-knee lesions in 33 patients (61% men; mean age, 70 years +/- 11) with chronic peripheral occlusive disease of the lower limbs were treated with directional atherectomy.

Heat-Treated Steel Plates with Heavy Section and Large ...

2019-4-3 · ing. This slab was rolled to a thickness of 130 mm and width of 4 650 mm by plate rolling, followed by quench-ing at 885°C and tempering at 660°C using the newly-constructed batch type heat treating furnace and water quenching pit. The mechanical properties of the steel plate are shown in Tables 3 and 4. Property deviations are small

Simulation Technology to Quantify Arc Interruption …

2020-11-12 · Dimensions of the space 42 mm×20 mm×20 mm Electrode length 20 mm Electrode diameter Φ5 mm Contact-to-contact distance 2 mm Load condition 200 V, 60 A Magnetic flux density Uniform magnetic flux in +Y direction The usual method of DC arc interruption is magnetic arc quenching in which a magnet is placed in the arc-quenching

of Quenching Temperature on the Mechanical Properties …

Effect of Quenching Temperature on the Mechanical Properties of Cast Ti ‐ 6Al ‐ 4V Alloy Reham Reda *1, Adel A. Nofal 2, Abdel‐Hamid A. Hussein 3

Steel Plate Induction Quenching Heat Treatment …

2019-8-25 · Features of Steel Plate Induction Quenching Heat Treatment Production Line: 1. The entire steel plate induction quenching heat treatment production line is mainly composed of induction heating machine, quenching and tempering sensor, automatic feeding device, servo motor drive discharge device and center console.. 2.

The Die and Post Extrusion Equipment

2018-5-15 · rate. For example, a 15 inch (380 mm) pipe die holds about 200 lb (91 kg) of molten unplasticized polyvinyl chloride (UPVC). If the output rate is 1100 lb/hr (18.3 Ib/minute or 8.3 kg/min) then the average residence time in the die is 200/18.3 = 10.9 …

Design and Engineering Challenges for Installation of Coke ...

2021-1-22 · The coke transfer car for wet quenching process is rectangular in plan to suit wet quenching in the quenching tower and can receive coke pushed out from oven in static position. The CDQ coke bucket has circular plan to suit lifting by crane for discharge of coke to chamber and needs to be rotated during receiving coke for its even distribution.

Oil Quenching and Molten Salt Baths OIL AND POLYMER ...

2014-4-22 · Oil-quenching operations are heat treatment processes that both harden and temper metals. Molten salt baths are used for heat treatment of metals, ceramics, or polymers to increase their hardness. OIL AND POLYMER QUENCHING One process in the heat treatment of metals is a controlled cooling or quenching of heated materials

A possible mechanism of the self quenching streamer …

1986-6-15 · The metastable states of argon, Ar m, play the most important role in the formation of a self quenching streamer (SQS).There is a positive feedback process for Ar m accumulating in a small region near the anode wire: depletion. A transition criterion to start SQS is shown to be the concentration of Ar m exceeding a critical value.

Evaluation of arc quenching characteristics of various ...

2017-11-7 · These dissociations also result in the high specific heat and thermal conductivity of SF 6, leading to a high arc quenching ability, which can also make the arc discharge unstable and fluctuate. The arc current and voltage in the steady state are presented in figure 10(a) for a SF 6 gas inlet flow velocity of 1.768 m and 0.884 m .

General Catalog of TOOL STEELS

2017-4-3 · Special care is required for quenching large-size dies or wire electric discharge machining. Dies for deep drawing, gauges. Carbon tool steel for small production to be quenched in oil. Improved SK105 grade for its hardenabillty. Press forming dies, jigs and tools, gauges. Vacuum quenched and air quenched steel. Improved SGT grade