MICROTEST Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

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Universal testing Machines Servo-Hydraulic EFH Series 20kN to 2000kN

MICROTEST

MICROTEST, S.A. Instruments and Equipments for Materials Testing (+34) 91 796 33 32 www.microtest-sa.com 1

Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

MICROTEST EFH Series from 20kN to 2000kN capacity:

Universal hydraulic servo-controlled machine 20kN to 2000kN capacity, computer controlled, to perform static tensile tests on metallic materials. It basically consists of: - Strong loading frame with a reading strain gage load cell built into the piston - Computer Controlled System SCM3000 and software, for the data acquisition, control and processing. - Hydraulic Power Pack: adapted to the users specific needs: range of force, speed, stroke, type of control, etc. The whole is built in a console. The frame is designed to carry out tensile tests using the grips placed in the clamping heads. In the upper part, between the head and traverse, It is possible to carry out flexion, compression, bending, hardness, dishing tests, according to the International Standards by using the suitable (see accessories) devices. The hydraulic servo-controlled unit regulates the load or the displacement rate by the Computer. An emergency device stops the machine in any moment as per the International Safety Standards. A control panel situated on the frame governs the movement of the lower tensile head (typical excursion 0÷300mm with electric end of stroke switches) for an easier positioning of the specimen according to its length. The machine is supplied complete with loading frame, control system SCM3000 and hydraulic power unit. The extensometers, the grips and the printer are options and should be ordered separately according to the needs of the user.

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Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

The EFH testing machines include one or more force transducers (load cell) that provide better precision measurement of the applied force than pressure transducers or gages used in traditional hydraulic systems. In this way the force measurement is not affected by oil temperature, local disturbances caused by the oil flow, friction in the load cylinder, etc. The test speed and the position can be digitally controlled and measured by means of a linear displacement transducer in the actuator axis obtaining a high precision controlled movement.

EFH MACHINES FLEXIBILITY The EFH machines flexibility is further extended by a wide array of accessories instrumentation, grips and fixtures to perform all kind of test with the higher efficiency. These accessories include LVDT extensometers, compress-meters, strain gage extensometers, high temperature extensometers, as well as grips, holders, jigs or platens for holding the test specimens. They can also be delivered with special testing equipment as high temperature furnaces, climatic chambers, etc. MICROTEST can provide a great variety of grips and accessories, depending on the material or test. Among others:     

Compression platens. Pneumatic, hydraulic or manual grips for tensile tests with different jaws. Bend fixtures. Other test fixtures (shear, friction, tear, peel, etc) Extensometers, furnaces, climatic chambers, etc.

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Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

This flexibility makes EFH machines very suitable in most of the standardized axial tests, where the force to be applied is under the load capacity of the machine, in tensile test or compression tests in the same single test zone.

Among others, with the suitable fixture, the following tests can be done:

      

Tensile tests on metal samples: standard shapes, ribbons, springs, screws, fasteners, washers, wires, cables, elastomeric samples, etc Corrosion under tension tests. Tensile tests on standardized steel samples. Tensile, shear or bending tests on aluminum samples or profiles. Compression tests on concrete, mortars, ceramics, foams, wood, rocks, etc. Friction tests, peel tests, shear, etc. Bending tests on metals, mortars, concrete, ceramics, wood, paving tiles, etc.

Do not hesitate to contact us to consult any need about your tests.

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Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

A set of 2 or 4 columns, a high stiffness crosshead and a base plate that define the mechanical test frame. The crosshead is positioned by means of the hydraulic lifting system and can be locked by a hydraulicmechanical grip. The position control of the upper crosshead is electrical and can be repositioned by the user by acting on the controls of the hydraulic lifts and lock. Test area guard to protect the user and an emergency stop to shuts off hydraulics are part of the security elements.

LOAD FRAME A two or four columns frame with hydraulic lifting system for the upper crosshead and hydraulic-mechanical system to lock it on the chromed columns of guidance at the desired height. The position control of the upper crosshead is commanded electrically. Testing and Control of the machine is through Software/ Computer. Control of cross head, Jaw and Grip is through panel also. Control of Jaws/grips is manual through frontal panel and also con be software controlled operation.

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Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

CONTROL, MEASUREMENT AND ACQUISITION SYSTEM - The control and measurement is performed by the SCM3000 or SCM4000 electronic boards developed by MICROTEST. This electronic board provides a closed loop control of the machine and analogue to digital conversion for at least 8 channels. The control includes digital input/output lines connected with the machine and motor driver covering the rest of the control and security functions of the control system. The machine control can be monitored by means of a computer via USB connection. The software SCM3000 (alt. SCM4000) allows also the recording of the different quantities data during the test. SCM 4000 System with MOOG Portable Test Controller is the version to complex fatigue tests.

A control panel is available in two ways: by computer, through SCM software and an SCM3000 electronic unit with additional touch screen panel interface (AFL-W10 type, optional) for manual control which enables test start, test stop, return, test status indication and variable speed up/down jog buttons, fine position up/down buttons and specimen protection features. It includes two soft keys, results display, programmable function keys and specimen protection. The SCM3000 electronics is connected to this optional touch screen to provide stand alone management of tests.

EFH machines make use of this SCM3000/SCM4000 software that enhances the features of the machine for any kind of test or material, allowing the user the full control of any of the functionalities of the machine. It’s a very reliable and adaptable system. The description of the SCM3000/SCM4000 software specifications is shown apart. All database and controlled parameters are managed using a computer (included) with the MICROTEST SCM3000 or SCM4000 software (English version).

The control system also includes: software selectable servo-control by force or by displacement (or other quantity), displays for the configured channels, digital zeroing of any channel, fully configurable channels, calculated channels, configurable alarms, digital recording of every configured quantity, selectable sampling, automation of the tests (tests methods and complex sequences of movement or load), definition of test parameters, calculations, graphical display of recorded data and test results, etc.

MICROTEST software helps the user to automate his operations, providing a powerful Method and Result Editor, with the possibility of exportation of data to Excel ® or ASCII files that allows the generation of customized reports. The test curves can also be rescale, recall and replot by a Graphics Editor

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Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

between circulations, thus reducing oil aeration. The internal surfaces of the reservoir feature a backed-on coating to eliminate rusting and prevent fluid contamination. A 3micron filtration system protects against silting and includes a pop-up indicator to let you know when it’s time to change it.

HYDRAULIC POWER UNIT MICROTEST CHH Hydraulic Power Units are efficient, fixed and variable volume, fluid power sources that offer 180 to 300bar service with smooth pressure output to give the test system greater accuracy and resolution. The low and high output pressure of these units remains stable regardless of any changes in flow demand.

A cooling air system and hydraulic accumulator keep hydraulic fluid temperature and pressure uniform for peak system performance. Interlock circuits turn the unit off if the level gets too low or its temperature too high. Easy-to-read gauges let the user monitor fluid pressure, level and temperature.

The unit includes an adjustable pressure setting. The CHH Hydraulic Power Units features a large capacity reservoir which extends the life of the hydraulic fluid by increasing the residence time

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Universal Testing Machines Servo-hydraulic EFH Series 20kN to 2000kN

TECHNICAL FEATURES Load Capacity Type of control Max. crosshead stroke Horizontal clearance Max. distance between the jaws Width flexion joke (opt.) Max. flexion knives distance (opt.) Máx. Compression plates light Control

Software Load reading Resolution Accuracy Class EN ISO 7500-1 Stroke reading Displacement Resolution Strain Strain Resolution Frame weight General Typical dimensions (depending on the users’ needs and capacity) Power supply

20kN, 30kN, 100kN, 200kN, 300KN, 500 kN, 600 kN, 700kN, 1000kN, 1200kN, 1500kN, 2000kN Force, displacement , strain (optional) 50mm to 400mm (other under request) Typ. 300 to 850mm (other under request) Typ from 10 to 1500mm 190 mm 300 to 1000 mm (typical) From 10 to 1500mm Computer Controlled System SCM3000 or SCM 4000 System with MOOG Portable Test Controller SCM3000 or SM4000 latest versions By strain gage load cell type PBI or PCH MICROTEST 0,01% Ultimate value / capacity 1 or 0.5 Linear transducer: LVDT, magnetostrictive, or encoder type 0.01mm - 0,0001 mm (depending on the sensor) Sensing by electronic extensometer (accessory) Typ. ≤0,001 mm, by MT-EXT. 5-10mm range From 500kg, 1500kg to 4000kg approx. 3.300 x 1300 x 950 mm (high capacity frame) Recommended working area: 15 to 20m² 400 Vac 3 phases 50Hz Total power depends on the dynamic requirements

Basic standard specifications. Dimensions, weights and supply voltage can be adapted to the customer’s needs. They are only approximate and dependant on the specific technical proposal. Maximum speed value affects power value.

MICROTEST, S.A. C/ Valle de Tobalina, 10 28021 – MADRID (Spain) Tel.: (+34) 91 796 33 32 [email protected] http://www.microtest-sa.com

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