What is plasma arc machining process?
In machine tool: Plasma arc machining (PAM) PAM is a method of cutting metal with a plasma-arc, or tungsten inert-gas-arc, torch. The torch produces a high-velocity jet of high-temperature ionized gas (plasma) that cuts by melting and displacing material from the workpiece.
What is plasma arc machining describe with schematic diagram?
Plasma-arc machining (PAM) employs a high-velocity jet of high-temperature gas to melt and displace material in its path. The torch produces a high-velocity jet of high-temperature ionized gas called plasma that cuts by melting and removing material from the workpiece.
Which is part of plasma arc machining?
Plasma arc machining is a metal removal process in which the metal is removed by focusing a high-velocity jet of high temperature (11,000°C to 30,000°C) ionized gas on the workpiece.
Where is plasma arc machining used?
It is mostly used for cryogenic, high temperature corrosion resistant alloys. It is also used in case of titanium plate up to 8mm thickness. PAM is used in nuclear submarine pipe system and for welding steel rocket motor case. PAM is prominent for the applications related to stainless tube and tube mills.
What are the advantages of plasma arc machining?
Advantages of Plasma Arc Welding ➨Torch design allows better control of arc. ➨This method provides more freedom to observe and control the weld. ➨The higher heat concentration and plasma jet allows faster travel speeds. ➨The high temperature and high heat concentration of plasma allow keyhole effect.
Which gas is used in Pam?
Using plasma arc melting, the metal is melted under inert gas atmosphere (usually Helium or Argon) in a pressure range between 400 – 1,200 mbar abs. The plasma arc torch column provides the heat source with maximum temperatures well above 15,000 K.
Can plasma cutter weld?
With the right torch design, a nitrogen-water injection, less expensive than other gases, can work well when plasma cutting aluminum and stainless material for subsequent welding. The process involves an electrode surrounded by nitrogen, which is heated by an electric arc to form the plasma.
Will a plasma cutter cut rusty metal?
Plasma can cut any electrically conductive metal including stainless steel, mild steel, aluminum and more, without pre-heating. Plasma is also great at cutting painted, dirty or even rusted metal.
What is the mechanism of material removal in Pam?
The material removal takes place by directing a high velocity jet of high temperature (11,000-30,000℃) ionized gas on work piece. Narrow plasma jet melts the workpiece material in its path. With the high temperature involved, can be used for any material those resistant to oxy-fuel gas cutting.
How does plasma arc machining works?
Plasma-arc machining (PAM) employs a high-velocity jet of high-temperature gas to melt and displace material in its path which is also called as PAM, this is a method of cutting metal with a plasma-arc, or tungsten inert-gas-arc, torch. When a gas or air heated at high temperatures, the number of collisions between atoms increases.
What is plasma arc cutting?
The Plasma Arc Cutting (PAC) process severs metals by using a constricted arc to melt a localized area of a work piece, removing the molten material with a high velocity jet of ionized gas issuing from the constricted orifice. The ionized gas is a plasma, hence the name of the process.
What is a plasma arc cutter?
A plasma cutter is a relatively easy-to-use tool to cut steel and other electrically-conductive metals. These cutters work by using a high-voltage electrical arc and a compressed gas, usually air.
What is plasma cutter used for?
A plasma cutter is a usually used tool for cutting metals for a good type of functions. A hand-held plasma cutter is a wonderful tool for quickly cutting through sheet, metal plates, straps, bolts, pipes, etc.