31 materials selection materials are selected based

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3.1. Materials Selection Materials are selected based on designed and metallurgical properties of the materials such as machinability, formability, weldability that greatly influence the construction methods and other joining methods. Other factors considered are cost of the materials; and mechanical properties of the materials. 3.2. Equipment The parts used are as follows: 3 phase, 2HP, Induction motor, 1:10 Worm gear reduction box, tapered and ball bearing, ceramic band heaters, thermocouples, Temperature control box other such as mainframe is cut into sizes using oxyacetylene gas welding, grinding and welding operation on mold box, barrel and Screw conveyor were faced using the lathe machine, drilling, milling, using drilling machine, milling machine and respectively. Drilling operation on the lathe machine was performed on the components such as the mold, barrel, flanges, and the supporting frame. Milling operation was carried out on the barrel. All the general finishing operation was carried out on the machine such as grinding of all rough edges using a hand grinding machine. Cutting saw or frame cutting were used for cutting the various metals into sizes and required shapes. 4. Working The operational principle of this machine is as follows: (a) Switch on the heater and set the required temperature slightly above the melting point of different waste plastics. (b) Mixing waste plastics, rubber composites and calcium carbonate in required quantity and is poured into the hopper when the required temperature in the control box has reached. (c) Switch on the motor and the screw conveyor starts rotating at 80 rpm. (d) The waste plastics from the hopper gets melted and conveyed towards the nozzle. (e) A brick mold is kept at the end of the nozzle tip and the molten plastic/rubber composite material starts filling the mold box. After the mold is filled completely the mold box is removed from the nozzle tip dipped in the water bath and kept inside the bath for an hour for proper cooling.
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(f) The final product is removed from the mould box and is sent for compression testing using Hydraulic Brick testing machine. 5. Testing of the Product 5.1. Different Types of Brick Materials Tested Various waste plastic sample bricks are produced from the machine and its details are given in Table 1. Table 1. Compositions of various samples prepared 5.2. Experiment Setup and Procedure The equipment used for testing various samples is Hydraulic Brick Testing Machine (shown in Figure 3) which can apply a maximum compressive load of 2000kN. Figure 3. Hydraulic Brick Testing Machine The waste plastic/rubber composite brick is placed in between the top and bottom compression pads as shown in Figure 4 and load is applied hydraulically till the failure of the brick.
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  • Fall '19
  • Compressive strength, Plastics. Thermoplastics

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