Question

in oxy fuel gas cutting metal cutting takes place due to

Answer 1

Explanation:

In oxy-fuel cutting, a torch is used to heat metal to its kindling temperature. A stream of oxygen is then trained on the metal, burning it into a metal oxide that flows out of the kerf as slag.

Answer 2

In oxy fuel gas cutting metal cutting takes place due to lower melting point than the base metal

Explanation:

• Oxy-fuel cutting is a chemical reaction among uncontaminated oxygen and steel to form iron oxide. It can be defined as fast, precise rusting.  
• Preheat flames are used to increase the surface or edge of the steel to about 1800°F (bright red color). Unadulterated oxygen is then focused toward the heated area in a fine, high pressure stream.  
• As the steel is oxidized and blown away to form a cavity, the preheat and oxygen stream are moved at constant speed to form a continuous cut.  
• Only metals whose oxides have a lower melting point than the base metal itself can be cut with this process.
• Otherwise as soon as the metal oxidizes it terminates the oxidation by forming a protective crust.  
• Only low carbon steel and some low alloys meet the above condition and can be cut effectively with the oxy-fuel process.  

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