Safe numbers are 40 psi for oxygen and 10 psi for acetylene, regardless of tip size. Simply adjust them until you get a neutral flame, but pay close attention to the pressure to prevent it from exceeding the limit.
What should my torch regulators be set at?
How I set my torch regulators – YouTube
What should the pressure on oxygen regulator be?
The pressure in an oxygen cylinder can be as high as 2200 psi (15,169 kPa), which must be reduced to a working pressure of 1 to 25 psi (6.90 to 172.38 kPa). The acetylene cylinder pressure can be as high as 250 psi (1724 kPa).
How do you set up oxy acetylene gauges?
How to Set-up and Adjust Oxy-Acetylene Regulators – YouTube
What is the ratio of oxygen to acetylene?
Natural Gas
| Table : Fuel Gas Characteristics | ||
| Fuel Gas | Maximum Flame Temperature °C | Oxygen to fuel gas Ratio (vol) |
|---|---|---|
| Acetylene | 3,160 | 1.2:1 |
| Propane | 2,828 | 4.3:1 |
| MAPP | 2,976 | 3.3:1 |
What is the normal working pressure for acetylene?
The working pressure of acetylene equipment is critical: Acetylene pressure must not exceed 0.62 bar (9psi) unless equipment has been specifically designed for it.
CONTINUE READING BELOW
What pressure should acetylene gas be used at?
Under no condition shall acetylene be generated, piped (except in approved cylinder manifolds) or utilized at a pressure in excess of 15 psig (103 kPa gauge pressure) or 30 psia (206 kPa absolute).
How do you adjust oxygen flow rate?
Setting Oxygen Flow Rates – YouTube
Do you turn on the oxygen or acetylene first?
We recommend closing the oxygen valve first whenever turning off an oxy-fuel torch system especially when Acetylene is fuel.
What pressure should oxygen and propane be set at for cutting?
When one is nearing time to ignite the torch, around 10 pounds of pressure is dialed into the propane cylinder’s outlet valve. On the oxygen regulator outlet, around 40 pounds of pressure is dialed in.
Why is my torch popping?
Overheated Nozzle
If the popping is only happening after you’ve been using the torch for a while, like maybe after half an hour or so, it might be because the nozzle is getting too hot. What’s happening here is the heat is making the nozzle hole grow so it’s not restricting the gas flow like it’s supposed to.
What pressure should oxygen and acetylene be set at for brazing?
In case the recommended working pressure settings are not indicated, safe numbers are 40 psi for oxygen and 10 psi for acetylene, regardless of cutting tip size.
What is the ratio of oxygen to acetylene in carburizing flame?
Carburizing Flame : It has more of acetylene content than that of oxygen, approximately 3:1.
What gauge pressure should acetylene never be set above?
Never use acetylene at pressures above 15 psi. Using acetylene at pressures in excess of 15 psi gauge pressure (or about 30 psi absolute pressure) is a hazardous practice.
What happens to acetylene above 15 psi?
Acetylene will not explode under low pressure at normal temperatures. However, it becomes unstable and spontaneously combustible when compressed to a pressure over 15 psi. Beyond 29.4 psi, it becomes self explosive, and a slight shock may cause it to explode even in the absence of air or oxygen.
How much pressure is in a full oxygen tank?
A full cylinder will read about 2000 psi (pounds per square inch). the gauge reaches the flow rate your doctor prescribed. the regulator. Secure oxygen cylinders in your vehicle so they do not roll or bump against other cylinders or objects.
What happens if you break the 1 7th rule?
The 1/7th rule refers to the flow rate at which an operator dispenses the gas from the cylinder. … If the flow rate exceeds the recommended flow rate, you‘ll start to pull acetone through which can cause the acetylene to reduce.
What should your oxygen level be?
Your blood oxygen level is measured as a percentage—95 to 100 percent is considered normal. “If oxygen levels are below 88 percent, that is a cause for concern,” said Christian Bime, MD, a critical care medicine specialist with a focus in pulmonology at Banner – University Medical Center Tucson.
What is a good oxygen level?
A normal level of oxygen is usually 95% or higher. Some people with chronic lung disease or sleep apnea can have normal levels around 90%. The “SpO2” reading on a pulse oximeter shows the percentage of oxygen in someone’s blood. If your home SpO2 reading is lower than 95%, call your health care provider.
Is 6 liters of oxygen too much?
The normal flow rate of oxygen is usually six to 10 litres per minute and provides a concentration of oxygen between 40-60%. This is why they are often referred to as MC (medium concentration) masks, as 40%-60% is considered to be a medium concentration of oxygen.
How do you know when to stop applying solder?
How do you know when to stop applying solder? The solder will draw all the way around the joint.
Is Mapp more sensitive to shock than acetylene?
MAPP gas is more sensitive to shock than acetylene. Needle valves on the torch regulate the flow of oxygen and acetylene at the torch. Two types of regulators are the single-stage and the two-stage. … Cylinders should not be exposed to any open fire, heat, or sparks from the torch.
How do I turn on oxy acetylene?
How do you turn on an oxy acetylene torch? – YouTube
Are acetylene and propane regulators the same?
If your working pressure is less than 15PSI you can still use the acetylene regulator because it is designed to be used under the same cylinder pressure as propane and propylene and provides maximum outlet pressure of 15PSI.
How do you cut with oxy propane?
Oxy-Propane Cutting – YouTube
Can you use compressed air instead of oxygen for cutting?
No. It is not the quantity of air you need, but the concentration of oxygen present in the air. Air normally contains approximately 19% oxygen- compressing the air does not increase the oxygen content of the air. For oxy-fuel torches and burners you need oxygen- not air, which is 100% oxygen.
How do you adjust an oxy acetylene cutting torch?
Oxy Acetylene cutting torch setup – YouTube
What shade levels do you need for oxy fuel cutting?
For gas welding and oxygen cutting operations, a Shade 3 up to a Shade 8 is required depending on plate thickness. Lower shades are used for tasks like torch brazing and torch soldering.
Why is the oxygen turned on for a moment after a tip is cleaned?
Buy a new tip. Why is the oxygen valve turned on before starting to clean a cutting tip? To blow away any debris.
What is weld spatter?
Weld spatter is formed from droplets of molten metal or non-metallic material that can be produced during a welding process. The drops of hot material can spray or splash from the weld and hit the workbench, floor, base material or other surrounding area.
When shutting down the torch you need to be certain that?
Make sure that main valves are off and the regulator pressure adjusting screws are backed out with no pressure readings on the gauges. Ensure torch valves are off. You just studied 12 terms!
What is the hardest metal to weld?
What is the hardest metal to weld? Aluminum is the metal that is very hard to weld due to its melting point, the conductivity of heat, and ductility.
What can I weld with oxy acetylene?
What metals can be welded with Oxy-Acetylene? If Oxy-Acetylene welding is done the right way, it can be used to weld all commercial metals. The metals that are welded with Oxy-Acetylene include low-alloy steel, low-carbon steel, wrought iron, and cast iron.
What should you never weld directly against?
Welding should never be done directly on a concrete floor. Heat from the arc can cause steam to build-up in the floor which could cause an explosion.
Is it safe to lay an acetylene bottle on its side?
Acetylene cylinders must not be placed on their sides, since the acetone and binders will have dislodged. The result may be formation of an acetylene “pocket” that is subject to polymerization and the possibility that liquid acetone will be released into the regulator.
What color hose is used for oxygen?
A blue color indicates the hose as suitable for use with oxygen, and a red hose is used for acetylene and other fuel gases. If you weld a gas hose line, the oxygen hose is blue and the fuel hoses are red, what color do the gas hose lines have?
What is the maximum pressure that should be used with a gauge whose highest number is 400 psig?
If the highest pressure marked on the face of an oxygen pressure gauge is 400 psig, it is recommended that this gauge should not be used at pressures above 200 psig. To avoid possible burns, pliers or tongs should be used to pick up metal in the welding shop.
Does using oxygen make your lungs weaker?
Home oxygen therapy is not addictive and it will not weaken your lungs. You will get maximum benefit by using oxygen for the amount of time prescribed by your doctor.
What is the maximum draw rate per hour of a tank of acetylene?
The most common heavy duty heating tip sold in the United States can require up to 80 cubic feet per hour of acetylene.
At what PSI is an oxygen tank considered empty?
A cylinder should never be emptied to a pressure lower than 172 kPa (25 psi/in2) (the residual contents may become contaminated if the valve is left open).