Hydraulic systems for production equipment with a mutually controlled hydraulic program-storage drive and actuator hydraulic prime movers

1997 ◽  
Vol 33 (2) ◽  
pp. 133-139
Author(s):  
Yu. A. Chernikov ◽  
A. N. Preobrazhenskii
Keyword(s):  
Production Equipment ◽  
Hydraulic Systems ◽  
Prime Movers

scholarly journals Timely diagnostics of hydraulic equipment in metallurgical production

2021 ◽  
pp. 50-54
Author(s):  
E. V. Gapeenko
Keyword(s):  
Distinctive Feature ◽  
Continuous Monitoring ◽  
Production Equipment ◽  
Diagnostic Methods ◽  
Hydraulic Systems ◽  
Metallurgical Production ◽  
Management Company ◽  
Hydraulic Equipment ◽  
Fast Acting ◽  
Combined Mode

Precision control of hydraulic equipment is a distinctive feature of modern hydraulic systems. With the help of special diagnostic devices, it is possible to reliably and simply monitor the operation of hydraulic equipment. Diagnostic methods can be very different. The article lists the stages and methods of checking hydraulic equipment malfunctions, as well as describes the principles of operation of diagnostic devices of well‑known world manufacturers HYDAC, MOOG, used in OJSC “BSW – Management Company of the Holding “BMC”. Schematically, the connection of the MOOG tester to the production equipment is presented when checking the servo valve in autonomous and combined mode, without resorting to dismantling the valve. Continuous monitoring of the oil purity with the help of the HYDAC FCU device allowed saving time on assessing its condition and taking fast‑acting corrective measures to clean the oil from contamination.

scholarly journals Hysteresis Control in Pump-Controlled Systems—A Way to Reduce Mode-Switch Oscillations in Closed and Open Circuits

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 424
Author(s):  
Samuel Kärnell ◽  
Liselott Ericson
Keyword(s):  
Open Circuit ◽  
Switching Behavior ◽  
Mode Switching ◽  
Hydraulic Systems ◽  
Mode Switch ◽  
Pressure Sensing ◽  
Controlled Systems ◽  
Huge Impact ◽  
Prime Movers ◽  
Hysteresis Control

There is growing interest in using electric motors as prime movers in mobile hydraulic systems. This increases the interest in so-called pump-controlled systems, where each actuator has its own drive unit. Such architectures are primarily appealing in applications where energy efficiency is important and electric recuperation is relevant. An issue with pump-controlled systems is, however, mode-switch oscillations which can appear when the pressure levels in the system are close to the switching condition. In this paper, the mode-switching behavior of different generalized closed and open circuit configurations is investigated. The results show that the choice of where to sense the pressures has a huge impact on the behavior. They also show that, if the pressure sensing components are properly placed, closed and open circuits can perform very similarly, but that mode-switch oscillations still can occur in all circuits. Active hysteresis control is suggested as a solution and its effectiveness is analyzed. The outcome from the analysis shows that active hysteresis control can reduce the risk for mode-switch oscillations significantly.

SAFETY DURING OPERATION OF FORGING AND STAMPING EQUIPMENT

2020 ◽  
Author(s):  
K.O. Kobzev ◽  
S.A. Vyalov ◽  
E.S. Bozhko ◽  
I.A. Zolotuhina ◽  
◽  
...  
Keyword(s):  
Production Equipment ◽  
Safety Requirements ◽  
Die Forging ◽  
Main Production ◽  
Hot Die Forging ◽  
General Safety

This article discusses the General safety requirements for the main production equipment, as well as General safety requirements for the tool and die tooling. Possible difficulties in hot-die forging shopsand ways to solve them in various situations are described.

ANALISIS KINERJA PABRIK TEH HITAM “PAHIT MADU”

2013 ◽  
Vol 13 (3) ◽  
Author(s):  
Djawardi Djawardi ◽  
Yustiar Gunawan
Keyword(s):  
Heat Exchanger ◽  
Production Process ◽  
Black Tea ◽  
Production Equipment ◽  
Standard Means ◽  
Fluid Bed ◽  
Calculation Results ◽  
Low Performance ◽  
Equipment Utilization

The business unit's black tea processing of Perkebunan Nusantara suffered a loss of approximately Rp.60 billion. This is caused by the failure to achieve the quality and quantity of production which has been targeted by the management. Black tea processing factory "Pahit Madu" is required to improve the performance of the production process. To improve the production of black tea starts from improved production equipment through improved equipment utilization. One method ofmeasuring the effectiveness of using an apparatus is Overall EquipmentEffectiveness (OEE). OEE calculation results show that black tea factory "Pahit Madu" for four (4) years under the standard. Means, the effectiveness of utilization of equipment in the factory black tea "Pahit Madu" was still very low. This was shown by the low performance equipment in the milling unit, drying unit and sortation unit. Toimprove the performance of the plant should begin by increasing the Cutting Tearing Curling (CTC) machine in milling stations, machines Fluid Bed Dryer (FBD) and Heat Exchanger (HE) at the drying stations, and Winnower machines at the sortation stations.

RMI BETA-C

Alloy Digest ◽  
1987 ◽  
Vol 36 (8) ◽  
Keyword(s):  
Carbon Dioxide ◽  
Tensile Strength ◽  
Base Alloy ◽  
Heat Treating ◽  
Production Equipment ◽  
General Corrosion ◽  
Aged Condition ◽  
Good Resistance ◽  
Solution Treated ◽  
Low Elastic Modulus

Abstract RMI Beta C is a heat-treatable titanium-base alloy that develops a tensile strength of over 200,000 psi in the solution-treated-and-aged condition. It has good ductility and toughness, good fabricability and a low elastic modulus. It has good resistance to general corrosion and it resists hot, aggressive environments containing ferric chloride, sodium chloride, carbon dioxide and hydrogen sulfide. Its applications include coil springs, fasteners, rivets and downhole oil-production equipment. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-87. Producer or source: RMI Company.

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