Can gas cut oxygen be replaced by compressed air?

If it's just to melt the brass, it's okay. Liquefied gas is propane (C2H6), which has a slightly lower heat of combustion than acetylene (C2H2), but it is still necessary to pay attention to safety when operating!!

The following points should be paid attention to during the operation of oxyalkyne gas cutting:

Personnel who carry out gas welding (gas cutting) operations must hold a special operation "operation certificate" before they can take up their posts.

The valves and tables of oxygen cylinders and acetylene cylinders should be complete and effective, fastened firmly, and should not be loose, damaged or leaked. Oxygen cylinders and their accessories, hoses and wrenches of opening and closing valves must not be contaminated with grease. Oxygen cylinders should be kept separately from other flammable cylinders, grease and other flammable items, and should not be transported in the same vehicle.

Oxygen cylinders should have shockproof rubber rings and safety helmets, and should not be exposed to strong sunlight. It is strictly forbidden to transport oxygen cylinders or acetylene cylinders directly by tower cranes or other cranes.

Acetylene hoses and oxygen hoses must not be installed by mistake. The acetylene hose is black and the oxygen hose is red. The distance between the oxygen cylinder and the acetylene cylinder shall not be less than 5 meters when stored and used, and the distance between the oxygen cylinder, acetylene cylinder and the open flame or cutting torch (welding torch) shall not be less than 10 meters.

When igniting the welding (cutting) torch, the acetylene valve should be opened first to ignite, and then the oxygen valve should be opened to adjust the flame.

Oxygen hose, outer diameter of 18 mm, should be able to withstand 20 kg of air pressure, and the performance should meet the provisions of GB2550-81 "Oxygen Hose"; Acetylene hose, with an outer diameter of 16 mm, should be able to withstand 5 kg of air pressure, and the performance should comply with the provisions of GB2551-81 "Acetylene Hose".

In use, when the oxygen hose is on fire, the hose should not be dismantled and the bending hose should be cut off, and the oxygen valve should be closed quickly to stop the gas supply. When the acetylene hose catches fire, extinguish the torch first, and use the arm to bend the hose in front of you to extinguish the fire. Hoses that have deteriorated, deteriorated, cracked, or leaked air, as well as hoses that have been stained with grease, should not be used.

Oxygen cylinders can be placed vertically or flat (with high pillow ends) when used, and acetylene cylinders must be used vertically. Vertical oxygen cylinders should be fixed to prevent them from tipping. Do not operate the hose on your back.

If there is acetylene and oxygen in the cutting (welding) torch, it shall not be placed in the metal pipe, tank, cylinder or box.

After the work is completed, the oxygen cylinder and acetylene cylinder should be closed, the oxygen meter and acetylene meter should be removed, and the gas cylinder safety helmet should be screwed; And coil up, bundle and hang the hose in a dry place indoors, the pressure reducing valve and air pressure gauge should be placed in the toolbox, carefully check the operation site and surroundings, and make sure that there is no danger before leaving.

No. The oxygen is not pure enough, and the temperature is not up to the mark.

The air compressor only compresses the air to facilitate discharge or force, and the oxygen content in the air is low, and there are too many impurity gases, and the compressed air is used to replace oxygen, which does not play a good role in supporting the combustion of the cutting flame.

Air can be converted into kinetic energy with an air compressor, but it cannot be burned or formed into a thin or tough enough air front. Therefore, compressed air replaces oxygen and cannot be used for flame gas oxygen cutting at all.

Air compression means that the air becomes compressed air after mechanical compression, and the air compressor is to provide air source power, which is the core equipment of the pneumatic system, and the main body of the electromechanical air source device, which is the device that converts the mechanical energy of the original motion into gas pressure energy.

Oxygen cutting refers to the use of the flame of an oxyylene blowpipe to cut metal products. When using, the safety technology should be informed: knocking and collision are prohibited.

How is that possible? An air compressor simply inflates and compresses ordinary air in a unit volume to enhance air pressure and facilitate discharge or force. How could it be used for cutting.

Air can be converted into kinetic energy, but it cannot be burned, nor can it form a thin or tough enough front.

It can't be replaced, the oxygen is not pure enough, and the temperature is not up to the requirements.

Absolutely, I've been using it for a few years.

Low-temperature welding is fine, cutting is not, I tried.

Summary. Oxygen cutting is a method that uses the heat energy of the gas flame to preheat the cutting part of the workpiece to the ignition point, and then sprays out a high-speed cutting oxygen stream, which is a method of metal combustion and heat release to achieve cutting.

Why does oxygen be used in gas cutting?

Hello, there is a combustible effect.

During gas cutting, oxygen acts as a combustion supporter and increases the melting temperature. After the metal is melted, high-pressure oxygen blows the molten metal away to form a slit.

Oxygen cutting is a method that uses the heat energy of the gas flame to preheat the cutting part of the workpiece to the ignition point, and then sprays out a high-speed cutting oxygen stream, which is a method of metal combustion and heat release to achieve cutting.

Thermal cutting of flame separation materials produced by the mixed combustion of combustible gas and oxygen, also known as oxygen cutting or flame cutting. During gas cutting, the flame preheats the material to the ignition point at the cutting point, and then sprays oxygen streams to make the metal material violently oxidized and burned, and the resulting oxide slag is blown away by the gas flow to form a cut. The purity of oxygen used for gas cutting should be greater than 99; Combustible gas is generally acetylene, but also petroleum gas, natural gas or coal gas.

Acetylene gas has the highest cutting efficiency and better quality, but the cost is higher. Gas cutting equipment is mainly a cutting torch and a gas source. The torch is a tool that generates a gas flame and transmits and regulates the heat energy of cutting, and its structure affects the speed and quality of gas cutting.

The use of a quick cutting nozzle increases the cutting speed, making the cut straight and the surface smooth. Manually operated gas cutting torch (see picture.)