Table of Contents
Can acetylene be used by itself?
That flame can be used for cutting and welding (although it’s not as efficient a way to weld metal as electric arc welding). Acetylene will burn by itself when it combines with atmospheric oxygen, but adding pressurized oxygen makes for a much cleaner, almost focused flame.
Does acetylene burn without oxygen?
Decomposition is a chemical reaction whereby acetylene breaks down into its constituent elements, carbon and hydrogen. This reaction gives out a great deal of heat, which can cause the gas to effectively ignite without the presence of air or oxygen.
What is the difference between oxy acetylene and acetylene?
A major difference between the two setups is how acetylene is combusted. An oxygen/acetylene system requires a cylinder of compressed acetylene gas as well as a cylinder of compressed high-purity oxygen. To obtain a higher flame temperature with air, the ratio of air to acetylene must be increased.
Why is it important to always turn off the oxy acetylene torch when not in use?
OXY-ALTERNATE FUELS We recommend turning off the fuel gas first when using alternate fuel gases. If the oxygen is turned off first, alternate fuels in ambient air can generate very large flame fumes, when the oxygen is turned off first, that can rise up and burn the operator or equipment.
At what PSI does acetylene explode?
What Is Acetylene? state above 15 psi. Auto-ignition temperature is 763o – 824o F. This means if acetylene reaches 30 psi in a free state, it can explode by itself without a spark or flame being present.
What causes acetylene to explode?
Acetylene is highly unstable. High pressure or temperatures can result in decomposition that can result in fire or explosion. There are several documented explosions that have occurred due to the buildup of acetylene vapors inside of a vehicle that were triggered by a spark from the vehicle’s electrical system.
At what temperature will acetylene not ignite?
The flashpoint of acetylene is -0.7 degrees Fahrenheit or -18.15 degrees Celsius, which is a long way below the 199.4 degrees Fahrenheit or 93 degrees Celsius top limit for flammability. This means that acetylene is very flammable, indeed.
Which is safer propane or acetylene?
The flammability limit of acetylene in the air is 2.5% to 82%, whereas that of propane is 2.1% to 9.5%. This may lead to a conclusion that acetylene is more dangerous than propane; however, the same is not true. Acetylene’s specific gravity 0.9 so it is lighter than air. If gas leaks out it will rise.
Can I use LPG instead of acetylene?
Oxy Propane Propane is the easiest fuel gas alternative to Acetylene to obtain and is normally supplied in cylinders on a Deposit basis, rather than rented (as is usually the case with Acetylene). For most users, Propane works out cheaper, especially for infrequent users of Oxygen + Fuel kits.
What PSI should oxy acetylene?
The recommended setting for multi-hole cutting using oxy acetylene is the oxygen regulator at 40 psig with the acetylene regulator setting at 10 psig. As with the previous recommendation, this applies to cutting steel that is less than 1.5 inch thick.
What can happen if fuel or oil gets on oxygen and acetylene regulators?
Oxygen under pressure and hydrocarbons (oil and grease) can react violently, resulting in explosions, fire, and injury to personnel and damage to property. Even a small amount of hydrocarbon can be hazardous in the presence of high oxygen concentrations.
Does oxygen or acetylene open first?
Keep cylinders away from fire. Extinguish the torch flame by closing the acetylene valve first and then the oxygen.
Is it safe to use oxy acetylene torch?
Yescom Portable Weld Torch Tank Kit Twin Tote Oxygen Acetylene Oxy Cutting Brazing Welding… Burning acetylene gas is the key point to produce much heat or energy and the temperature could be 5620 degrees. So, this torch may be easy to use, but it can burn and explode if you can’t handle it properly.
Which is better to use, acetylene or oxy?
There are benefits to both. The benefits to using Oxy Acetylene are: By far it has the hottest flame (5000 degrees vs. 2700 degrees) and can get the job done the quickest, especially on piping 3” diameter and up.
How hot does an air acetylene torch get?
A common propane/air flame burns at about 2,250 K (1,980 °C; 3,590 °F), a propane/oxygen flame burns at about 2,526 K (2,253 °C; 4,087 °F), an oxyhydrogen flame burns at 3,073 K (2,800 °C; 5,072 °F) and an acetylene/oxygen flame burns at about 3,773 K (3,500 °C; 6,332 °F). Click to see full answer.
What’s the ratio of oxygen to acetylene in a torch?
Open them slowly and try to do it about 1 or ½ turns. According to the cutting tip size, adjust the regulator recommended by the manufacturer. In the beginning, 20 psi for oxygen and 5 psi for acetylene will be perfect. This ratio produces a flame for medium cutting. Take a striker and ignite the torch.