Table of Contents
How do you use a oxy-acetylene torch for welding?
Separately purge both oxygen and fuel gas lines. Open fuel gas valve 1/2 turn. Ignite flame with striker. Increase fuel gas flow until flame leaves end of tip and no smoke is present. Decrease until flame goes back to tip. Open oxygen valve and adjust to neutral flame. Depress oxygen lever and make necessary adjustments.
Can you weld with acetylene only?
Gas welding involves the melting of a base metal and a filler metal, if used, by means of the flame produced at the tip of a welding torch. Generally, only oxy-acetylene (in specific cases oxy-hydrogen) is recommended for oxy-fuel welding.
Can you weld with a cutting torch?
Torch welding equipment is quite effective and it can produce flame temperatures that go up to 3200° C or 5,620° F. Torch welding apparatus can be used to heat, cut weld, and braze different kinds of metals. It is powerful enough to even work with steel.
How thick of steel can you weld with oxy-acetylene?
Oxy-acetylene torches can easily cut through ferrous materials in excess of 200 mm (8 inches). Oxygen lances are used in scrapping operations and cut sections thicker than 200 mm (8 inches).
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. This is only part, but a very important part, of the complete safe operating procedure recommended for torches by Harris.
Should you ever use oil on welding equipment?
Never use oil on welding equipment. Oil and grease may ignite spontaneously, when in contact with oxygen.
Is acetylene flammable or explosive?
Acetylene is an extremely flammable gas and can form an explosive atmosphere in the presence of air or oxygen.
Can you use oxygen for welding?
Yes. You may purchase your own oxygen tank for welding, and they are also available for lease. One may buy medical oxygen tanks that store specific amounts of compressed oxygen as well. However, to purchase an oxygen concentrator, you will need a doctor’s prescription stating your oxygen level due to FDA regulations.
Can you solder with oxy-acetylene?
Because soldering alloys all melt at temperatures much below 4270C, to use an oxy- acetylene flame for a soldering operation is not only pointless, but difficult, since that flame is so hot that overheating of the metal is hard to avoid. Most widely used are air-acetylene and air-propane torches.
Is a propane torch hot enough to braze?
Here is the answer to whether you can braze with a propane / air torch. It is a standard braze alloy that melts over a range of 1250 – 1305 F.
For what thickness of material is an oxy-acetylene is a welding rod used?
Explanation: Oxy-acetylene processes are mainly used for the joining of metal sheets or for joining metal plates which are having a thickness of 2mm to 50mm. When the thickness of the material is more than 15 mm, an additional filler metal is added like a welding rod.
What is the length of the arc generally?
Explanation: The distance from the center of the arc to the tip of the electrode, right till the bottom of the crater is defined to be the arc length. The arc length is considered to be one of the most essential variable in welding process. 3.
How thick can a torch cut?
Oxy-fuel torches also offer versatility, as they are capable of cutting, welding, brazing, soldering, heating and gouging. The average hand-held system can cut steel 6 to 12 inches thick. However, some oxyfuel hand torches are able to cut steel more than 20 inches thick.
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. Turn off the torch with the torch valves. When the flame is out, open up the oxygen valve. Then dunk the nozzle in water.
What should my torch gauges be set at?
The recommended setting is for the fuel gas regulator to be set at 10 PSIG and the oxygen regulator at 45 PSIG.
How far should acetylene valves be turned on?
An acetylene cylinder valve shall not be opened more than one and one-half turns of the spindle, and preferably no more than three-fourths of a turn.
Why are the curtains on the welding booth so important?
Weld curtains and screens add an additional layer of protection in the welding workspace, ensuring that workers operating in close vicinity of the welding area are not exposed to harmful UV light or the risk of flash burns.
How far should you open the acetylene torch valve when lighting the torch?
The cylinder valve should only be opened 3/4 of a turn. The acetylene cylinder should never be laid down as this will result in the gas becoming unstable.
How does flux adhere to a welding rod?
As the flux ingredients burn in the welding arc, they release shielding gas to protect the molten weld pool from atmospheric impurities. When the weld pool cools, the flux forms slag to protect the weld metal from oxidation and prevent porosity in the weld bead.
Can acetylene bottles be laid down?
Never store acetylene cylinders in an unventilated vehicle. Acetylene cylinders must be transported and stored vertically. If acetylene cylinders have been laying on their side, allow them to stand in an upright position for at least 30 minutes before use.
Can you breathe acetylene?
* Breathing Methyl Acetylene can irritate the nose and throat. * Breathing Methyl Acetylene can irritate the lungs causing coughing and/or shortness of breath. Higher exposures can cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency, with severe shortness of breath.
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.
