Abrasive Jet Machine Chapter 3 Summary

Chapter 3

3. Design of Components

3.1 Designing of abrasive jet machine.

An abrasive machine was fabricated in the institute workshop with required raw materials and procured components. Before that a detailed design of the functional subsystems were made using computer aided design tools. For this CREO Parametric 3.0 software was used which is very good in product design and analysis. The components that were designed include the mixing chamber, work-holding device, nozzle and its holder, abrasive container (Hopper) and total piping system. For fabrication purpose the welding machine, grinding machine and hand-drill were used. Some components are procured from commercial market to improve accuracy.

3.2 Frame work FIG. 3.2.1 FIG.3.2.2

3.3 Mixing chamber

The mixing tube is where the abrasive mixes

3.6.1

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It is an instrument or device has convert energy into potential energy stored in pressurized air. The energy contained in the compressed air can be used for a variety of application. Air compressor collect and store air in a pressurized tank. And use piston and valves to achieve the appropriate pressure levels within an air storage tank attached to the system.

In a reciprocating compressor, gas is compressed by mechanical variation of the volume of space inside the cylinder, by reciprocating motion of the piston.

For a cycle of operation, there are two strokes such as,

1) Suction stroke, and

2) Compression stroke

As the piston moves down, air is sucked from atmosphere to the cylinder through suction valve (a non-return valve). As piston moves up, air is compressed and at the end of compression stroke, air is delivered through delivery valve (which is also a non-return valve). Topmost portion the piston can travel inside the cylinder is is called Top Dead Centre (TDC), and bottom most portion the piston can reach inside the cylinder is called as Bottom Dead Centre