The torch produces a high velocity jet of high temperature ionized gas plasma that cuts by melting and displacing material from the workpiece. Now this plasma is targeted towards the workpiece with a high velocity and the machining process starts.
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Plasma arc machining definition. Introduction the plasma arc machining process was introduced to the industries in 1964 as a method of bringing better control to the arc welding process in lower current ranges. The figure depicts how one matter is obtained from the other and vice. Plasma arc machining pam. As shown in the figure there are four types of matter solid liquid gas and plasma. Plasma arc machining pam plasma arc machining is a nontraditional thermal process. Actually all welding arcs are partially ionized plasmas but the one in plasma arc welding is a constricted arc plasma. Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasmatypical materials cut with a plasma torch include steel stainless steel aluminum brass and copper although other conductive metals may be cut as wellplasma cutting is often used in fabrication shops automotive repair and restoration industrial construction and. Today plasma retains the original advantages. It mentions advantages of plasma arc weldingcutting and disadvantages of plasma arc weldingcutting. Pam is a method of cutting metal with a plasma arc or tungsten inert gas arc torch. That means we get the plasma state that we wanted for plasma arc machining. Plasma arc machining pam employs a high velocity jet of high temperature gas to melt and displace material in its path. As the gas comes in contact with the plasma there is a collision between the atoms of a gas and electrons of an electric arc and as a result we get an ionised gas. Just as oxy fuel torches can be used for either welding or cutting so too can plasma torches which can achieve plasma arc welding or plasma cutting. This page covers advantages and disadvantages of plasma arc welding and arc cutting.
The term plasma as employed in physics means ionized particles. This channel is formed by faculty from bit to enhance the knowledge of students towards technical and fundamentals plasma arc machining is used for variety of industrial application. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive.
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