For 3/16″ to 1/4″ thick steel using a #0 cutting tip, your settings should be about 30 psi for oxygen, and about 4 psi for acetylene. At 12 psi for oxygen, you probably had trouble blowing through the edge of the material to get your cut started.
What should cutting torches be set at?
Set your acetylene to between 5-7 psi (pounds per square inch). Set your oxygen to 40-50 psi. Turn your oxygen valve on all the way, then turn your acetylene valve a 1/6-1/5 of a turn. Using your striker light the torch facing away from you and the bottles.
What should my oxy acetylene regulators be set at for brazing?
- Oxy-acetylene for welding/brazing or cuttin.
- g : The pressures at the torch : acetylene 5 to 7 psig and Oxygen 7 to 10 psig.
- Cutting oxygen pressure will be around 15 to 20 psig.
What is the best way to set the oxygen pressure for cutting?
What is the best way to set the oxygen pressure for cutting? Make sure the oxygen cylinder is secure and open the valve all the way. What metals can be cut with the oxyfuel gas process?Do you turn off 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 is the ratio of oxygen to acetylene?
Table : Fuel Gas CharacteristicsFuel GasMaximum Flame Temperature °COxygen to fuel gas Ratio (vol)Acetylene3,1601.2:1Propane2,8284.3:1MAPP2,9763.3:1
What PSI should oxy acetylene?
The recommended setting for multi-hole cutting 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 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.What is the number for acetylene?
CAS number : 74-86-2 Substance/mixture CAS number/other identifiers : Occupational exposure limits, if available, are listed in Section 8.
How do you adjust the pre heat flame correctly?The quantity of preheat can be adjusted by raising or lowering the preheat pressures to the torch. High pressure will result in high flowrates, i.e. a high velocity preheat. Low pressures will result in low flowrates/velocity. The operator can adjust the O/F ratio by looking at the inner cone of the flame.
Article first time published onDo you use more oxygen or acetylene?
For maximum flame temperature in oxygen, the ratio volume of oxygen to fuel gas are 1.2 to 1 for acetylene and 4.3 to 1 for propane. So, there is far more oxygen being consumed when using propane than acetylene. Despite propane being less expensive than acetylene, this is counteracted by the higher oxygen consumption.
Why does my oxy acetylene torch pop?
The reason that an oxyacetylene cutting torch will pop and go out is because of a problem with gas flow. Usually this is either an issue with flow settings, a leak or blockage.
What colors are normally used on oxygen and acetylene hoses?
Here are universal Color coding: oxygen cylinder is black and acetylene is maroon, hoses and regulators are color coded with oxygen as blue and acetylene as red. Here are a few safety tips to follow when using gas welding hoses.
What kind of flame is used for oxy acetylene cutting?
A Neutral Oxy Acetylene Flame is used for Welding, Brazing and Silver Soldering most metals and is therefore the most common type of flame to use. A Neutral Flame is also used for Oxy Acetylene Cutting.
What is the proper shipping name for acetylene?
THIS MATERIAL IS HAZARDOUS AS DEFINED BY 49 CFR 172.101 BY THE U.S. DEPARTMENT OF TRANSPORTATION. PROPER SHIPPING NAME: Acetylene, dissolved HAZARD CLASS NUMBER and DESCRIPTION: 2.1 (Flammable Gas) UN IDENTIFICATION NUMBER: UN 1001 PACKING GROUP: Not applicable.
How can you determine the correct tip size when using a new torch set?
Select the tip size rated to cut that thickness or beyond. The tip size is based on the cutting oxygen gas orifice (using drill index sizes) – not always the pre-heat orifices. Cutting oxygen gas orifice sizing is important so you may compare different manufactures tip sizes, as there is not an industry standard.
What is un1001 acetylene?
It is a hydrocarbon and the simplest alkyne. This colorless gas (lower hydrocarbons are generally gaseous in nature) is widely used as a fuel and a chemical building block.
Is it safe to lay an acetylene bottle on its side?
Do not lay acetylene cylinders on their sides. If an acetylene tank has accidentally been left on its side, set it upright for at least one hour before it is used.
Can you store oxygen and acetylene together?
Oxygen storage. Oxygen cylinders shall not be stored near highly combustible material, especially oil and grease; or near reserve stocks of carbide and acetylene or other fuel-gas cylinders, or near any other substance likely to cause or accelerate fire; or in an acetylene generator compartment.
How much pressure should an acetylene tank have?
A full acetylene cylinder which has a pressure of 250 psi at 700F (1725 kPa at 20 C) will have a pressure of 315 psi at 900F (2175 kPa at 310C) and a pressure of 190 psi at 500 F (1300 kPa at 90C).
When cutting the preheat flame should be?
With the correct nozzle clearance, the preheat flames should not be more than 1/4” above the top surface of the plate. When the nozzle is too low, part of the preheat flame’s inner cones become buried in the cutting kerf. This produces grooves in the cut face and excessive melting of the top edge.
Which flame is suitable for preheating in cutting process?
you have to use an oxidizing flame so we deposited a large amount of oxygen molecules in our walls that will be harmful bisieles our welding the difficult control of the hydrogen generating mainly pore defects.
Why is a cutting torch held at a low angle when thin metal is cut?
This lowered angle effectively increases the thickness of the metal being cut. On very thin metal, holding the tip near vertical produces too much preheating.
