Universal Testing Machines

Features

Universal Testing Machine have a wide range of applications. Anumber of materials, metals in different form and shapes can be tested for variety of tests like Tension, Compression, Transverse, Bend, Shear, Brine Hardness etc. Special attachments are also available for testing of Flat Belts, Chain Links, Wire Ropes etc.

Loading Frame

The base has a hydraulic cylinder at its center and two main screws at both ends. The middle cross head is mounted on screws through main nuts. the middle cross head can be moved up or down through chain transmission and geared motor to adjust the initial tensilel compression clearance. On the piston, rests an assembly of upper, lower cross head and two columns. The individually lapped cylinder piston assembly ensures smooth axial force with minimum friction.

Control panel

Hydraulic circuit - it consists of hydraulic power pack which has a directly driven radial plunger pump which gives a continuous non pulsating flow of oil pressure up to 250 bar. a pressure compensated needle type flow control valve is provided to control the oil flow to cylinder there by achieving a desired piston speed. Infinitely variable speeds an be obtained with help of valves. Optionally this can be controlled from electronic control system.

Loading Rate / Straining Rate Control
   
This is superfine controlling system which controls loading rate I straining rate as per commands from electronic machine control system. With UP / DOWN Keys on electronic control system loading ratel straining rate is adjusted. Fine UTM Software can send loading rate / straining rate to electronic control system.

Load Measurement System

The oil pressure in the main cylinder is also transferred to an electronic pressure transducer which goes proportionate signal to computer electronic unit. both the motors for hydraulic operation and cross head motion are controlled by buttons on electronic control system and they have interlocks to prevent simultaneous working of motors. The electrical panel is housed in control panel. Displacement measurement is carried out by means of a rack and pinion on rotary encoder. Encoder signal is fed to electronic control system to get displacement.

Operation

Tension test is conducted by gripping the test specimen in the upper and middle cross head. Compression, Bending, Transverse, Shear and Hardness tests are conducted between the middle and lower cross head by using appropriate fixtures. The rapid adjustment of middle cross head facilities easy fixing of tensile I Compression specimens of different lengths.

Hydraulic controls are through hand operated valves, ergonomically placed for ease of control. Optionally valves can be controlled from electronic control system. Adequate safeties for over load and over travel are incorporated and emergency switch is provided.

Accuracy & Calibration

Every machine is calibrated in accordance with procedure laid down in BS - 1610 - 1964 IS 1828 - 1991. 'FMI' Computerised Universal Testing Machines comply with grade A of BS 161()"1964 and Grade 1.0 of IS 1828 - 1991. An accuracy of + -1% guaranteed from 2% to 100% of capacity of the machine. in the computerised UTM, the computer is an integral part of the entire system and not just on ADD - ON feature. This puts a lot of power and versatility into the hands of the operator and makes the system much more self contained then usual, as it includes many functions usually only available as additional ( often expensive) optional features.

Features of -Fine UTM software
   

• Load and Elongation is continuously displayed on screen.
• Overtoad protection for machine by electronic control.

• Tests like Tension, Compression, Transverse, etc. are conducted.
• Autographic “Load Vs Elongation” recorder is fitted.
• A wide range of metallic materials can be tested.
• Optional Accessories such as – Mechanical Extensometer,  Load-Stabilizer,  Attachments for Brinell test, Tensile test for shouldered & threaded,  Single & Double shear test,  Bolts-Nuts & Washer test, Rope test, Flat Belt test, Bend-Rebend test, 180° Bend test, Pull-Out test, etc. are available.
• Capacities from 100 KN to 1000 KN.( i.e. 10T to 100T)
• Loading accuracy well within ±1% conforms to IS: 1828 / BS: 1610.

Technical Specification For Analogue Versions -

MODEL	TFUN-100	TFUN-200	TFUN-400	TFUN-600	TFUN-1000
Measuring  Capacity (KN)	100	200	400	600	1000
1’st Range    (KN)	0 - 100	0 - 200	0 - 400	0 - 600	0 - 1000
Least Count  (KN)	0.2	0.4	0.8	1	2
2’nd Range   (KN)	0 - 50	0 - 100	0 - 200	0 - 300	0 - 500
Least Count  (KN)	0.1	0.2	0.4	0.5	1
3’rd Range    (KN)	0 - 25	0 - 50	0 - 100	0 - 120	0 - 250
Least Count  (KN)	0.05	0.1	0.2	0.2	0.5
4’th Range    (KN)	0 - 10	0 - 20	0 - 40	0 - 60	0 - 100
Least Count  (KN)	0.02	0.04	0.08	0.1	0.2
Overall dimensions approx. (mm)	1950 x 800 x1850	2000 x 800 x 1900	2100 x 800 x 2060	2200 x 800 x 2400	2350 x 800 x 2700
Weight approx (kg)	1200	1300	2100	3100	4100