Rubber Testing Equipment has been proved extremely helpful for conducting cylindrical rubber test and determining resistance of vulcanized rubber. A wide range of rubber testing equipment is used in the rubber industries for different testing purposes. We manufacture rubber testing equipments in a wide variety, which include different types. These are designed using modern techniques and a superior quality metal is used for testing the rubber in different ways and available for the industry leading price.
Flexing endurance of rubber products is determined by simulating in laboratory the action of flexing repeatedly under standard conditions of speed, mode, and degree of flexing.
One of the accepted procedures for determination of flexing resistance makes use of a De Mattia Flex Test. This test provides useful information about the resistance of compounds of vulcanized rubber to flex cracking when subjected to flexing. Cracks develop in that part of the surface where stresses are set up during flexing, or if that part of the surface initially contains a crack, cause this crack to extend in a direction perpendicular to the stress.
One of the methods used for the determination of impact resilience of solid rubbers is based on the measurement of the height of rebound of a standard plunger after it is dropped from a fixed height onto the surface of the rubber specimen under test. This test is conducted on a Vertical Rebound Resilience Tester.
The GlobeImpact ResilienceTester(vertical rebound type)consists of a plunger which can be dropped from a fixed height onto the top face of the test specimen, a vertical plunger guide over which the plunger moves during its fall and subsequent rebound, an arrangement to hold the plunger at the specified height and to release it from there, and a scale marked in 100 equally spaced divisions to give directly the rebound height as a percentage of the dropping height.
The GlobeMulti-CellAgeingOvenis designed to carry out accelerated aging on polymers by subjecting them to deterioration by controlled circulation of air at an elevated temperature under atmospheric pressure. It consists of an aluminum block having seven holes of 100 mm diameter, each hole representing a cell. The test specimens are freely suspended inside these cells on wire suspenders for aging.
The block is heated with the help of cartridge electric heaters placed in it. Its temperature is controlled with the help of a digital temperature controller-cum-indicator. The block is placed inside a sheet metal cabinet and is surrounded with mineral wool for providing it thermal insulation.
The Globe Ross Flex Tester consists of an arrangement to hold one end of the test specimens in an oscillating grip such that they can be bent through an angle of 90° at the specified frequency, and adjustable guide rollers to keep the free end of the test specimens pressed down during the bending operations.
The specimen grip has provision for holding six pairs of test specimens at a time. The grip is pivoted on two ball bearings to give a smooth low-friction movement. Movement of the grip causes test specimens to bend over a silver steel ground rod with its axis coinciding with the axis of movement of the grip. The movement is provided by a motor and V-belts through an eccentric and link mechanism. An electronic digital counter with backup memory is provided to record the total numbers of bending cycles.
IS 3400 (Part 16) 1974 : Methods of Test for Vulcanized Rubbers
Part 16 : Measurement of Cut Growth of Rubber by
the use of Ross Flexing Machine
ASTM D 1052 - 1985 : Standards Method of Testing for Measurement of Cut Growth of Rubber by Ross Flexing machine.
Tension set is defined as the proportion of applied strain remaining after a rubber piece has been stretched and allowed to recover in specified manner. It is an important property for rubber components that are subjected to tensile stresses either continuously or intermittently.
Tension set is determined by stretching a test specimen of standard dimension by a specified percentage in a suitable apparatus for a specified time and temperature and then allowing it to recover. It is indicated as permanent set retained by the test specimen expressed as a percentage of initial strain given to it.
IS 3400 (Part 13) - 1983 : Methods of Test for Vulcanized Rubbers
Part 13 : Tension Set
IRS T 37 – 1982 : Specification for Grooved Rubber Sole Plates for Placing Beneath Rails
Tensile strength and elongation are the two prime characteristics of most of the raw materials, whether they are metals; or non metals such as rubber, leather, textiles, plastic, paper; or finished products such as rods, wires, ropes, yarns, belts etceteras. These two properties often play a major role in determining the suitability of any raw material for any specified application. It is, therefore, of utmost importance to determine these characteristics accurately, conveniently, and quickly.
The Globe TensileTestingMachines provide a relatively inexpensive way for determining the tensile strength and elongation of a variety of raw materials such as rubber, leather, fabric, plastics, belts, wires, etc eteras. They are based on constant rate of traverse principle, in which one end of the test specimen is held in a stationery grip while the other end is moved at a known fixed speed with the help of a motor, gear box, and screw arrangement.
In electronic type tensile testers, the load exerted on the stationary grip is measured by a load cell and is displayed on a digital indicator. The indicator has a peak force retention memory which can be recalled to display the maximum load exerted on the test specimen before its failure. An overload protection relay is provided to automatically stop the motor if the load exerted goes above the maximum capacity of the load cell.
Permeability of rubber sheets to gases is defined as the rate of volume flow of gas under steady state conditions between opposite faces of a unit cube of solid rubber, when subjected to unit pressure difference under a controlled temperature. The measurement of this characteristic is of important in the evaluation of compounds for products such as inner tubes, tubeless tyre liners, hoses, balloons or other gas containers, seals and diaphragms etc.
The Globe Gas Permeability Tester for rubber consists of a test cell with arrangement for maintaining a constant elevated temperature and a horizontal glass capillary system for measuring the volume of gas permeated.
The test cell consists of metal blocks having independent arrangements for heating with the help of cartridge type heaters. The temperature of each ck is indicated and controlled individually with the help of individual digital temperature indicators cum coblontrollers. Both the blocks are properly insulated to avoid heat losses.