DUCTILITY TESTING MACHINE-(REFRIGERATED)-(ASTM D113, ASTM D5892)-

WITH REFRIGERATION SYSTEM & DIGITAL TEMPERATURE CONTROLLER

Complies with following standards 

IS : 1208, ASTM D 113, ASTM D5892, ASTM D6084, AASHTO T51

Working Principle

Ductility is defined as distance in (cm) to which a standard briquette of bitumen can be stretched before the thread breaks. The briquette is stretched at a rate of 50 mm/min ± 2.5 mm/min at a temperature of 27° C ± 0.5° C

Salient Features

1. This instruments is specially designed for the tropical regions where radiation of sunrays are higher than the average. 
2. The Machine is having built in refrigeration system to conduct ductility test below ambient temperature up to 10 °C in tropical conditions.
3. Entire instrument is mounted on a sturdy, rigid stand to conduct the test with ease.
4. Equipped with direct drive motor to maintain constant speed 
5. Vibration free and smooth operation
6. Provides two rates of pull / travel : 1 cm/minute or 5 cm/minute
7. Brass/Bronze Gears to prevent rusting

Construction Details

1. The Machine can be operated at 27°C with control accuracy of ± 0.5° C as per the requirement of ASTM & IS.
2. The apparatus consists of water bath with a heater, and a circulating pump to maintain uniform temperature distribution throughout the chamber.
3. Water bath inside chamber is made of mirror polished stainless steel material  S.S. 304 Grade
4. Inner chamber is also equipped with thick insulation to prevent the thermal heat loss.
5. The water bath chamber is provided with water drain cock to empty the tank water after completion of the test.
6. Exterior body is fabricated from Mild Steel material, which is powder coated in attractive shades.
7. A heater is fitted inside the water bath to achieve the desired temperature set point as per the test requirements. 
8. The Temperature inside the water bath is controlled by Dual Display Microprocessor based Auto Tuning PID Digital Temperature indicator cum controller. 
9. Control switches for motor, stirrer, heater and indicator lamps are fixed in control panel mounted at convenient place on the exterior side of water bath chamber.
10. EIE  Ductility machine will be supplied with 3 numbers of briquette molds as per the ASTM & IS Specifications.

How it works

1. One half of the briquette moulds is fixed in a fixed plate in the water bath, while the other half of the briquette mould is fixed to a carrier, which slides over a rotating threaded shaft with a clutch.
2. The motor and gears to rotate the carrier shaft are housed in a cabinet fixed above the other end of the bath. 
3. A clutch arrangement is made to stop the movement of the movable bracket when rapture of the specimen is noticed. 
4. An electric motor driven reduction gear unit ensures smooth constant speed and continuous operation and provides two rates of pull / travel - 5 cm/min and 1 cm/min, Which is selected by a clutch. 
5. Gears are bronze or brass
6. A pointer fixed to the carrier moves over a scale graduated from 0 150 cm x 1 mm, fixed on the bath with "0" (Zero) of the scale towards the fixed plates side. 
7. A traveling pointer adjusts to zero starting position indicates exact position of carriage on a linear centimeter scale attached to trough's front edge. 
8. Complete with three briquette moulds and one base plate as per ASTM D 6084, 5892 & 113.
9. Operates on 230v, 50 60 hz, single phase, AC Supply 

Refrigeration system

1. Refrigeration system comprises of Compressor, cooling coil, and condenser assembly.
2. Compressor will be of Kirloskar/Emerson make.
3. Complete refrigeration system will be provided with the digital control panel, which will be fitted below the ductility water bath on sturdy frame. 
4. The digital control panel will be comprising of cooling switch, mains switch and Auto tune PID Digital temperature controller cum indicator.

 Click here for working video :  https://www.youtube.com/watch?v=SxU00_wlzA4&t=391s