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Plasma arc machining pdf

plasma arc machining pdf

These filters are an important feature since they ensure oil is removed from the compressed air.
The plasma cutting machines are typically more expensive than oxyacetylene, and also, oxyacetylene does not require access to electrical power or compressed air which may make it a more convenient method for some users.
All of these scenarios provide pepakura ironman helmet file pdf great reasons to investigate plasma cutting.
The power supply then ramps up the DC current to the cutting amperage selected by the operator and replaces the preflow gas with the optimum plasma gas for the material being cut. .After you have selected the plasma cutting machine that is right for you, here are some tricks-of-the-trade that will help beginners make the best possible cut.Maintain a constant work distance Optimally, you should maintain a 3/16" to 1/8" distance from the nozzle to the work.When moving too fast, high-speed dross on the top surface is created since you are not allowing time for the arc to completely go through the metal.Continue Reading Aluminum gmaw: Winning the battle with wire feed March 8, 2017 By Rob Krause Getting to the root cause of wire feeding problems in aluminum gmaw can be a head-scratcher, particularly if you are more familiar with welding steel.The infrared pyrometer that I have is unreliable at best.Instead, you may get a sever cut which barely makes it through the plate and leaves behind dross or slag.

Wear long sleeves and gloves while cutting since molten metal is generated during the cutting process.Plasma is more forgiving in this regard.The high velocity stream of ionized gas mechanically blows the molten metal away, severing the material.Oxyfuel cutting requires that the operator carefully control the cutting speed so as to maintain the oxidizing process.Look for a manufacturer that offers a machine with the fewest number of consumable parts.The transfer from pilot to cutting arc occurs when the pilot arc is brought close to the work piece.Travel in the direction that will give you the best finished work If you are making a circular cut and plan to keep the round piece as your finished work, move in a clockwise direction.For example, to perform long, fast, quality production cuts on " steel, choose a 1/2" class (60 amp) machine.A longer arc means more volts and the ability to cut through thicker plate.This voltage potential directly affects the height at which the arc can transfer.