The gas cutting of the Gas cutting machine is a metal combustion process: first, the metal is heated above its ignition point with an oxy-acetylene flame, and then the high-pressure oxygen is turned on, the metal will burn violently in the oxygen, and the oxides produced by the combustion are The high-pressure oxygen is blown away, and the heat from the combustion continues to heat the metal.
What requirements do the cutting materials of the Gas cutting machinee meet?
What are the precautions for using the Gas cutting machinee?
How to use Gas cutting machinee to make grooves?
What requirements do the cutting materials of the Gas cutting machine meet?
The gas cutting process of the Gas cutting machinee is a process of preheating, combustion and slag blowing, but not all metals can meet the requirements of this process. Only metals that meet the following conditions can be gas-cut.
1. The combustion point of metal in oxygen should be lower than its melting point;
2. The melting point of the metal oxide should be lower than the melting point of the metal during gas cutting;
3. The combustion of metal in the cutting oxygen flow should be an exothermic reaction;
4. The thermal conductivity of the metal should not be too high;
5. There are few impurities in the metal that hinder the gas cutting process and improve the hardenability of the steel.
What are the precautions for using the Gas cutting machine?
Gas cutting machinee gas cutting is generally only used for low carbon steel, low alloy steel and titanium and titanium alloys. Gas cutting is a commonly used metal thermal cutting method in various industrial sectors, especially manual gas cutting is flexible and convenient to use.
The main conditions for the use of Gas cutting machine, the ignition point of the material to be cut is lower than its melting point. If the ignition point is higher than the melting point, it will melt before it is ignited, and the molten part will be blown away, so that the metal cannot reach the ignition point. , it cannot be cut. This is the case with cast iron. The melting point of iron with a carbon content of 0.7% is equivalent to the ignition point. If the carbon content is higher than this value, gas cutting cannot be used. The carbon content of cast iron is 2 % to 4%.
How to use Gas cutting machine to make grooves?
Use a large flame, and the flame is slightly tilted in the direction the cut is going. Slow down.
First, you're using propane, which is low in calories. Secondly, the flame does not heat vertically when the groove is cut, and the surface temperature is low. Third, the cutting oxygen removes more heat than it produces during combustion, lowering the surface temperature. Therefore, continuous heating, burning and slag blowing are not possible. On the surface it looks like a ditch. Not pretty.
If continuous cutting, this will slowly disappear as the temperature of the steel plate gradually rises. This phenomenon can also be eliminated by preheating.
Post time: May-01-2021
