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Assuming that you are using the Oxygen-Acetylene cutting process; both, depending at what stage/phase of the cutting process you are in. What we encounter is a gas flow differential problem. With the cutting torch flame properly adjusted (the acetylene valve opened to the point where the un-mixed acetylene flame is burning without producing any smoke but still in contact with the cutting tip of the torch, the oxygen valve is slowly opened until you have adjusted the flame to a neutral quality or setting. Press the cutting oxygen lever; typically the flame will become slightly carburizing ("feathers" will appear at the ends of the pre-heat flames) this phenomonom occurs because of the drop in line pressure due to the high flow of oxygen through the cutting tube or orifice. With the oxygen lever remaining depressed, readjust the flame to a neutral setting. This will cause the flame to become slightly oxidizing when the cutting lever is released; since an oxidizing flame burns slightly hotter than a neutral flame the pre-heat of the metal that is being cut is faster. When the metal is at the proper pre-heat or kindling temperature (1600 F for pure iron - various steel alloys will be slightly different; beginning to turn bright red is a good indicator) depress the cutting oxygen lever, the flame will revert to "neutral" and the cut can then begin. Weld. Prof.
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Flame Outer oxidizing zone?
The outer oxidizing zone in a flame is where there is sufficient oxygen for combustion to occur. This area is characterized by a blue color and is where the most complete burning of fuel takes place. The outer oxidizing zone is important for efficient and clean combustion processes.
What is the oxygen to acetylene ratio in oxidising flame?
The ideal ratio of oxygen to acetylene in an oxidizing flame is around 1.1:1. This ratio helps ensure complete combustion of the acetylene, resulting in a clean and efficient flame with sufficient heat output for various welding and cutting applications.
What will happen to the liquid in the glass if a flame is lit the liquid will'?
Expand Slightly
The distinctive flame colours of the alkali metal lithium?
Lithium flame colours are red or crimson when burned in a flame. This is due to the presence of lithium ions emitting light at specific wavelengths as they are heated in the flame. The colour can vary slightly depending on the temperature of the flame and other factors.
Sketch and label of different flame region coming from Bunsen burner?
A Bunsen burner flame typically consists of three regions: a non-luminous inner blue flame at the base, a luminous yellow flame surrounding the inner blue flame, and an invisible outer cone of hot air. The inner blue flame is the hottest part of the flame and is commonly used for heating purposes. The outer cone provides a secondary combustion zone for complete combustion of the gas.
What types of flame are obtained in oxy-acetylene gas welding?
In oxy-acetylene gas welding, three types of flames can be obtained: carburizing flame, neutral flame, and oxidizing flame. Carburizing flame has excess acetylene, neutral flame has perfect balance of acetylene and oxygen, and oxidizing flame has excess oxygen.
What are the three types of acetylene welding flames?
The three types of acetylene welding flames are neutral flame, carburizing flame, and oxidizing flame. The neutral flame has an equal amount of oxygen and acetylene, the carburizing flame has more acetylene than oxygen, and the oxidizing flame has more oxygen than acetylene.
Which type of flame is used for high carbon steel?
Most cutting and welding is done with a neutral flame.
A cutting flame that has an excess of oxygen?
A cutting flame with excess oxygen is known as an oxidizing flame. It is commonly used in metal cutting processes, as the higher oxygen concentration facilitates faster and more efficient cutting by promoting the oxidation of the metal. However, care must be taken to prevent overheating or damaging the material being cut.
Which gas welding flame is the hottest?
The neutral flame in gas welding is the hottest, reaching temperatures up to 6300°F (3482°C). This flame is achieved by mixing equal parts of oxygen and acetylene, providing the ideal balance of heat for welding.
Flame Outer oxidizing zone?
The outer oxidizing zone in a flame is where there is sufficient oxygen for combustion to occur. This area is characterized by a blue color and is where the most complete burning of fuel takes place. The outer oxidizing zone is important for efficient and clean combustion processes.
What is the temperature of a neutral flame on a cutting torch?
5720 F ref. Victor Equipment Co. booklet OXY-FUEL Welding ,Cutting , and Heating Guide c.1996
What is the oxygen to acetylene ratio in oxidising flame?
The ideal ratio of oxygen to acetylene in an oxidizing flame is around 1.1:1. This ratio helps ensure complete combustion of the acetylene, resulting in a clean and efficient flame with sufficient heat output for various welding and cutting applications.
What is the use of oxidizing flame?
An oxidizing flame is used in metalworking to add oxygen to a flame, which increases the combustion of materials being worked on. This helps to remove impurities and produce cleaner and brighter metal surfaces. It is commonly used in processes such as welding, brazing, and soldering.
Which gases are used in gas welding?
In most applications Oxygen and Acetylene. Newer gasses have been developed that are cheaper than Acetylene but us old timers still prefer to use it. It produces a slightly higher temperature and can be used to blacken Aluminum. By doing this then heating with a neutral flame the black disappears when the correct preheat temp. is reached. At this point it is also at the correct tempering temp. Weld with a slightly Carburizing flame (less Oxygen than a neutral flame).
Why is oxidizing flame desirable in welding of copper alloys?
An oxidizing flame in welding of copper alloys helps to remove impurities such as oxides from the molten metal, resulting in a cleaner weld with better mechanical properties. Additionally, the oxidizing flame provides better control over the heat input, which is crucial for preventing overheating and distortion of the material.
What is the temperature of the oxidizing oxygen LP gas flame?
896 degrees fahrenheit to 1121 degrees fahrenheit
