As Per IS : AS PER INDIAN STANDARS

SPECIFICATION:-

The machine is based  on Servo  Hydraulic  Closed Loop  principle  and fully computer controlled, operated through Windows based software with ease of operation. HLC‐591 (FL) machines are automatic pace setting based on servo

hydraulic closed loop principle. In these series of machines the pace setting is achieved through a combination of advanced electronic and hydraulic system.  Pacing  speed  is  programmed  through  the  software/  touch  panel  in selectable control modes and controlled by servo/proportional valve through

PID controller.

Salient Features

• Based on SERVO HYDRAULIC CLOSED LOOP FEEDBACK mechanism.

• Comply with various International and National standards.

• Six pillar type Loading frame to have better stability.

• Easy cross head movement on the two pillars to adjust the gap with easy operation for specimen setting as per requirement.

• Easily changeable Hydraulically operated Front Loading Grips for Tension test.

• Fully Computer Controlled operation with User friendly Software.

• Controlling on both Load (kN/sec)/stress (N/mm/sec), Displacement (mm/sec) or Strain Control basis.

• Facility to study Post failure behaviors of specimens.

• Inching/Release operation to set Sample.

• Auto release facility after specimen failure.

• 8 or 12 Additional input channels for external transducers.

• Load Measuring Accuracy less than +0.5% of the measured value of Load in the

Range from 2% ‐100% capacity.

• Displacement Measuring Accuracy less than +0.5% of the measured value of displacement.

• High speed Data acquisition and Statistical Analysis software.

•  Online  display  of  test  data  with  real  time  plotting  of  Load  v/s  Time,  

   Displacement v/s time, Load v/s Extensometer and Load v/s Displacement graphs.

• Statistical analysis of the test results along with facility to export data to Excel.

• Safety features like over travel limit for central cross head, over travel limit for ram   and over loading of the system and overheating  of  oil  is  provided  as standard

in the machine.

TYPICAL TESTS

Tensile/ Compression/ Bend/ Flexure/Shear/Hardness test on different ferrous and nonferrous materials  conforming  to  testing  procedure  laid  down  in IS/ASTM standards

(A) LOAD FRAME

The Loading Frame consists of a central cross head whose position is adjustable through motor driven lead screw movement depending on the size of the test

specimen. The lower table is carried by the piston of the Hydraulic Ram of suitable capacity positioned in the cast iron base of the machine. The upper cross head is carried by four steel columns fixed to the lower table. The machine have six pillars in total for stability and rigidly. Compression, transverse, bending, shear and hardness tests are carried out between the central cross head and lower table while the tension test is carried between the central and upper cross heads. Sensing of load is through a strain gauge based transducers, while the movement of the lower table (ram Stroke) is measured by rotary encoder / displacement transducers Safety features like over travel limit for central cross head, over travel limit for ram and over loading of the system are provided as standard with the machines.

• Statistical analysis of the test results along with facility to export data to Excel.

• Safety features like over travel limit for central cross head, over travel limit for ram  and  over  loading  of  the  system  and  overheating  of  oil  is  provided  as standard

in the machine.

TYPICAL TESTS

Tensile/ Compression/ Bend/ Flexure/Shear/Hardness test on different ferrous and  non  ferrous  materials  conforming  to  testing  procedure  laid  down  in

IS/ASTM standards

(A) LOAD FRAME

The Loading Frame consists of a central cross head whose position is adjustable through motor driven lead screw movement depending on the size of the test

specimen. The lower table is carried by the piston of the Hydraulic Ram of suitable capacity positioned in the cast iron base of the machine. The upper cross head is carried by four steel columns fixed to the lower table. The machine have six pillars in total for stability and rigidly. Compression, transverse, bending, shear and hardness tests are carried out between the central cross head and lower table while the tension test is carried between the central and upper cross heads. Sensing of load is through a strain gauge based transducers, while the movement of the lower table (ram Stroke) is measured by rotary encoder / displacement transducers Safety features like over travel limit for central cross head, over travel limit for ram and over loading of the system are provided as standard with the machines.

B) HYDRAULIC PUMPING SYSTEM

Hydraulic Pumping system is based on Servo Hydraulic principle with servo/proportional valve to control motion of the cylinder/actuator. It is suitable for the supply of required flow and pressure for the movement of the actuator. It has an oil tank of adequate capacity, vane type pump powered by a three phase motor. All the electrical controls including the temperature controller are fixed on one side of the tank. It includes all the accessories like pressure line filter, return line filter, oil level, relief valve, pressure gauge and air/water cooled heat exchanger. Anti vibration mountings shall be provided as standard along withthe HPS. Power Supply‐ 440V, three phase.

C. PC BASED CONTROL MECHANISM AND MEASUREMENT SYSTEM

Control system provides digital servo control, Ramp generation for machine movement, Data Acquisition etc. for continuous operation.

Operating Control Modes ‐ Load Control (Stress Control), Displacement Control (Stroke Control)

Testing Speeds ‐ Programmable in all control modes

- Load, Displacement & Extensometer Measurements

• Load Measurement through Electronic load measuring device

Load Accuracy : < + 0.5% of the measured load from 2% to 100% of capacity of machine

• Displacement Measurement through displacement transducer/LVDT

Displacement Resolution : 0.01mm

Displacement Accuracy : < 0.5% of measured value of displacement

• Extension Measurement through variable gauge length extensometer

Gauge Length : 50mm, 100mm & 200mm

Extension Resolution : 0.001mm

Extension Accuracy : < 0.5% of measured value of extension

PC system and Application Software for Controlling and Analysis

System shall be supplied with dedicated computer of following configuration or better for operation of the machine and analysis of test results.

Computer Intel i5 Processor, 320 GB HDD, 2GB RAM, DVD R/W drive, Key

Board,

Optical Mouse, 6USB Ports, 19” TFT Screen, Deskjet Colored Printer, UPS

Application Software

Application  software  should  the  integral  part  of  the  system  for  precise controlling,  operation  &  Data  Acquisition,  storage,  processing,  analysis  and reporting.

Salient Features

• Windows based user friendly software with easy user interface.

• Programmable rate of loading (Pace Rate) and other sample parameters.

•  Independent  Taring  or  Presetting  of  Load‐  Facility  for  auto‐zeroing  of deflection at preset load.

• Facility to Test parameter setting and creation of test methods/profiles up to 30.

• Auto release of system facility after sample failure and facility to see the post failure behavior of the specimen.

• Programmable Limits for Load, displacement & Strain.

• Facility to hold machine load and restart loading or unloading for number ofsteps.

• Online display of numerical values of Load, Displacement and Extensometer.

• Real time plotting of Load v/s Time, Displacement v/s time, Extensometer v/s

Time and Load v/s Displacement graphs.

• Automatic scaling of graphs in real time.

• Facility to save and retrieve test data along with order information about the

specimen such as age, specimen no., size, dimensions etc. in user defined file/ directory .

Analysis Software

Analysis software provides flexibility to user to do statistical analysis of test results and report generation as per relevant standards such as IS, ASTM etc. Salient features

• Plotting of following graphs‐Load v/s Time, Displacement v/s Time, Load v/s

Displacement, Stress v/s Strain, Load v/s Extensometer, Extensometer v/s Time

• Calculation of various parameters such as load and elongation at yields, peak load and displacement at break, yield stress, Modulus of Elasticity, Ultimate tensile

strength, Proof stress, compressive strength etc.

• Multi graph and zooming options for comparison

• Facility to print the data and all the graphs

• Advanced Statistical analysis (such as mean, SD, Variance etc.) for processing of  test results

• Batch Summary Report with multi graph facility for comparison up to 30 specimen

• Facility to export data to Excel or PDF

Broad Technical Specifications are given below:

Max. Capacity (kN) : 2000

1st Measuring range (kN) : 0-200

Least Count (N) : 100

2nd Measuring range (kN) : 200-2000

Least Count (N) : 1000

Clearance for Tension test (mm) : 50-900

Clearance for compression test (mm) : 0-900

Ram Stroke (mm) : 250

Piston speed at no load (mm/min) : 0-40

Clearance between columns (mm) : 750

Connected Load (K.W.) : 4.5

Voltage : 400-440

Phase : 3

Standard Accessories supplied with the machine

For Tension

Clamping jaws for round

specimens(mm): 10-25

                            25-40

Clamping jaws for flat

specimens (mm) : 0-20

                              20-40

Width (mm) of specimen : 75

Hydraulically Operated front loading grips will be supplied with the machine

For Compression

Diameter of platens (mm) : 250

For Transverse

Diameter of rollers (mm) : 50

Length of Rollers (mm) : 170

Max. span between the rollers

(adjustable) (mm) : 1000

Optional Accessories at Extra Cost

1) Electronic Extensometer

It is a veriable gauge length type extensometer suitable to determine proof stress

and can be used to measure extension on both round and flat specimens. This extensometer conforms to ISO 9513 standard.

Gauge length : 50 mm, 100 mm and 200 mm

Measuring range : 4 mm

Resolution : 0.001 mm

2) Bend – Rebend Test Attachment

Bend Testing fixture is suitable to carry out bend and rebend test on structural

steel having sizes upto 50 mm dia and high strength deformed steel bars and wires upto 40 mm dia.

3) Wire Rope Test Attachment

Suitable to carry out tensile test on wire ropes upto 10 mm

4) Shear Test Attachment

Shear testing attachment for round metallic specimen with complete set of dies for testing specimen of diameter 5,6,10,12,16 & 20 mm.

5) Flexure Test Attachment

6) Brinell Hardness Test Attachment

Attachment  suitable  to  carry  out  birnell  hardness  test  complete  with  ball indenters 5 mm and 10 mm and microscope.

7) Bolt Test Attachment

Attachment to accommodate buses to test threaded and collar type specimens

i) Eight set of plain bushes for testing collar type specimens from 4 mm to 20 mm.

ii) Eight sets of threaded bushes for testing threaded specimens from 4 mm to 20 mm

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