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Thermal and waterjet cutting.

Publication: Metal Center News
Publication Date: 01-OCT-04 		Format: Online - approximately 951 words
Delivery: Immediate Online Access

Article Excerpt
Cutting metal is a difficult and time-consuming task, especially when the job calls lot a tight tolerance or an unusual shape that can't be cut with a saw. In those cases, metal processors can choose from four cutting systems--oxyfuel, plasma, waterjet or laser--depending on which one can make a cut of the needed quality in a particular type of metal at the fastest speed.

Following is a basic description of each technology and their relative advantages and disadvantages:

Plasma arc cutting

Quickly becoming the preferred shape cutting technology among service centers and toll processors, plasma arc cutting uses a high-velocity jet of electrically charged gas to cut metal. A high-voltage spark between the nozzle and the electrode generates the initial arc, which ionizes a portion of the plasma gas, generating heat of 50,000 degrees Fahrenheit. It can be used to cut...

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