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

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

Construction Details

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

How it works

• 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.
• The motor and gears to rotate the carrier shaft are housed in a cabinet fixed above the other end of the bath. 
• A clutch arrangement is made to stop the movement of the movable bracket when rapture of the specimen is noticed. 
• 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. 
• Gears are bronze or brass
• 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. 
• A traveling pointer adjusts to zero starting position indicates exact position of carriage on a linear centimeter scale attached to trough's front edge. 
• Complete with three briquette moulds and one base plate as per ASTM D 6084, 5892 & 113.
• Operates on 230v, 50 60 hz, single phase, AC Supply 

Refrigeration system

• Refrigeration system comprises of Compressor, cooling coil, and condenser assembly.
• Compressor will be of Kirloskar/Emerson make.
• Complete refrigeration system will be provided with the digital control panel, which will be fitted below the ductility water bath on sturdy frame. 
• 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