Lesson 1Typical instrumentation and monitoring points: pressure, flow, temperature, contamination sensors, and vibration/noise sensorsThis part defines tools for watching press hydraulics, including pressure, flow, temperature, dirt, vibration, and noise. It shows where to place sensors, their ranges, signal types, and how data helps in checking and planning maintenance ahead.
Pressure sensor ranges and fitting spotsFlow checking for pumps and mover partsOil heat sensing in tank and key linesDirt counters and clean check pointsShake and sound sensors on pumps and enginesLesson 2Central hydraulic power unit (HPU) layout: reservoir, pump(s), prime mover, heat exchanger, auxiliary systemsThis part shows the main HPU setup for 250-bar presses, explaining tank design, pump and engine setup, intake and return paths, heat changers, and helper systems for steady, quiet, and simple servicing work.
Tank size, barriers, and air removal featuresPump fitting, lining up, and intake line designMain engine choice and joining setupsReturn path planning and foam reduction waysFitting coolers, filters, and connectorsLesson 3Thermal management: oil-air coolers, flow paths, thermostatic bypass valves, and heat load estimationThis part covers heat actions in high-pressure press lines, including heat sources, oil-air cooler choice, flow paths, heat-control bypass design, and heat amount guessing to keep oil good and parts reliable.
Heat making sources in press hydraulicsHeat amount guessing and work cycle checkOil-air cooler size and work curvesCooler spot, flow paths, and pipe setupHeat-control bypass valve choice and adjustLesson 4Directional control: proportional directional valve types, spool dynamics, flow control and electrohydraulic interfacesThis part looks at matching directional valves in 250-bar presses, covering valve kinds, spool moves, flow measure, and electric-hydraulic links for exact move control, repeat, and safe stop actions.
Valve build and matching move methodsSpool shape, overlap, and flow measure actsMove response, lag, and shake tricksBuilt-in electrics, drivers, and signal rulesSafe stop spots and emergency plansLesson 5Filtration and contamination control: filter types, locations (suction, pressure, return), bypass and monitoringThis part handles filter plans for high-pressure presses, covering filter kinds, levels, and spots on intake, pressure, and return lines, plus bypass valves, block signs, and clean goals for long part life.
Clean level goals for press partsIntake sieves vs low-pressure filtersHigh-pressure filter choice and sizeReturn line filters and side kidney unitsBypass valves and pressure difference signsLesson 6Energy storage and smoothing: accumulator types, placement, sizing and safety devicesThis part explains hydraulic accumulators for energy keep and shake smooth, covering bladder, piston, and sheet kinds, spot, pre-fill, size for press cycles, and safety tools needed by rules and laws.
Accumulator kinds and build detailsEnergy keep counts for press cyclesPre-fill pressure choice and checkSpot for shake smooth and quick responseSafety blocks, shut valves, and rulesLesson 7Fluid circuits and schematic interpretation: common arrangements for forming presses, actuator piping, and bleed/vent pathsThis part builds full fluid lines for forming presses, teaching diagram signs, common press setups, mover piping, bleed and air out paths, and how to read, check, and record hydraulic plans for jobs.
ISO hydraulic signs and line waysCommon one- and two-way press linesClamp, form, and return move setupsBleed, air out, and air remove plansReading and checking full press diagramsLesson 8Power transmission elements: variable displacement axial piston pump principles and control interfacesThis part focuses on changing size axial piston pumps in 250-bar presses, describing work rules, tilt plate control, balance choices, and electric links that match flow, pressure, and energy save.
Axial piston pump work rulesTilt plate tools and move controlPressure and load-sense control choicesElectric-hydraulic pump control linksStart, setup, and fix problemsLesson 9Pressure control components: relief valves, pressure compensators, sequence and unloading valvesThis part checks pressure control parts in press lines, including relief valves, pressure balancers, order valves, and unload valves, explaining sets, steady, links, and role in safety and energy save.
Main line relief valve size and setPump pressure balancer works and adjustOrder valves for step cylinder worksUnload valves for low-loss wait workLinks of many pressure control tools
