How To Use Oxy Acetylene Torch: Basics For Beginners
Feb 15, · This video will demonstrate the safe use of an oxygen acetylene torch to cut metal. Slightly open the valve for acetylene on the cutting torch. Make sure that it does not exceed a half-turn. Use a flint striker or spark lighter to ignite the acetylene gas flowing out of the torch’s nozzle. Soot or black smoke may come out once it is lit up, which is considered normal.
Does the thought of using an oxy acetylene cutting torch intimidate you? We feel you. After all, dealing with two tanks that are at risk of catching fire as usr work sounds risky.
You would rather have all your body parts firmly attached as you work, right? If you have the right settings for the entire system, you can safely use an oxy acetylene torch for all your projects. Not only that, you must light the torch and shut it off correctly.
Yes, there are proper ways to do all that. We carefully reviewed a bunch of products, and these are our recommendations. Before you set up your cutting torch, you must first understand how it works so that you can handle it properly. Not only that, this will allow you to get a cut of good quality, which is only possible if done correctly. For more serious cutting jobs, we do recommend the use of a plasma cutterthough.
An oxy acetylene cutting torch allows oxygen to mix with acetylene to combust and produce a flame that has a temperature exceeding C. This kind of flame is the only one hot enough to cut through mild steel, specifically any kind of steel that only has a maximum acetylebe 0.
The cutting torch pre-heats steel for it to reach that fo a cherry red color on the steel will be the sign that it has been adequately preheated. When oxygen from the cutting torch reaches the unprotected steel, an exothermic reaction occurs that causes it to form oxidized liquid steel or slag. Because steel has a higher melting point, this slag that formed can easily be blown away by oxygen.
This then reveals the solid steel that has not been oxidized. The exothermic reaction that occurs is continuous tofch long as the cutting torch is lit up and the flame hits the steel. This constant reaction prevents a crust from forming on the steel, which immediately occurs if the protection against oxygen is still present on the steel. Because there is no crust that forms, the oxygen from the cutting torch can now penetrate the exposed solid steel and cut through it.
Due to the acetylene present, the flame produced by the cutting torch is the highest among all oxyfuel cutting processes. This means you can make cuts much faster and of how to calculate the t test quality than the other methods.
Large cylinder tanks. With all these components, setting up an oxy acetylene torch can be an overwhelming experience. While we admit that setting it up torcy not a straightforward affair, how to play paranoid solo on guitar is still doable even by beginners.
Setting up such a system is pretty standard, but you must first check for any unique instructions the manufacturer of your cutting torch may have. After setting up, you still need to do some checks before attempting to light your cutting torch.
Make sure that the regulators are facing away from you when you do the following:. After successfully doing a leak test, you can now light up your oxy acetylene cutting torch following the instructions of the manufacturer.
Because of the gases involved, lighting up a cutting torch is done differently. Unlike other torches, a cutting torch will not produce a flame with just a push of the button. You should only use a flint striker to light a cutting torch because using smaller lighting devices, such as a match or lighter, are too small and will put you at risk of burning your hands as you light up the cutting torch. Also, you must make sure that the tip of your cutting torch is facing away from you, other people, and any flammable objects.
But if your cutting torch has its own ignition device, skip the above steps and follow the instructions given. Because there is also no knob or button present on the torch to stop the flame, you must manually shut down your oxy acetylene cutting torch by cutting off the gas being supplied. If you are not yet aware, there is a seemingly never-ending debate about which gas supply to switch off first — oxygen followed by acetylene or acetylene then oxygen.
While both methods are considered correct, manufacturers generally advocate shutting off the oxygen valve first uee acetylene. This method allows the acetylene still flowing to blow off the soot that settles in the crevices of your torch; any soot present can affect the seal of the gas ttorch and cause a leak.
Not only that, but this order also allows you to conduct a leak test before cutting off the gas supply. Once you cut off how to make an easy medieval costume oxygen supply then acetylene, the presence of a small flame despite no gas flowing to the torch will indicate a leak.
Early leak detection helps prevent an explosion. Another advantage of cutting off the oxygen supply first is that mini flashbacks are less likely to occur. Despite most cutting torches having protective features against it, flashbacks can still happen.
Mini flashbacks occur in the form of toorch loud pop or bang. While generally considered harmless, mini flashbacks can still cause accidents. If you are done with your work and need to return your equipment to its storage, you must follow the following steps:.
When storing the oxygen and acetylene tanks, make sure to keep it in a dry and airy location far away from any flammable objects. Always keep them in a vertical position. Have you ever attempted to cut cast iron using an ordinary blowtorch? If so, you what does the abbreviation smh mean have realized that it is a futile effort.
But if you are using a cutting torch to do so, the result will be different. Because an oxy-acetylene torch has the highest flame temperature present, it can easily cut through even steel that is at least mm thick. But when it comes to cutting cast iron, it is also possible but it will not give you a clean cut and is a bit harder to do. Preheating the cast iron is crucial to cut through it, and this is done by setting the cutting tkrch so that it produces a carburizing flame, instead of a neutral flame, and with the highest possible temperature.
This type of flame offers better preheating to the cast iron and also stops oxides from rapidly forming. Preheating should be done from the top all the way to the bottom and with more acetylene so that the heat will deeply penetrate the cast iron. Once it is sufficiently preheated, make small semicircles around the preheated line to melt the iron.
Finally, use the oxygen jet to blow off the molten iron and cut through it. You may need to use flux to help now make the cut. Because of the complicated process, using an oxy acetylene cutting torch to cut through cast iron is not often used. In fact, there are other methods specially developed for this purpose. Are you wondering if you need to buy separate welding equipment if you already have a cutting torch and need to do some welding?
If so, we usee good news — you can also use your oxy acetylene cutting torch for your welding needs. In fact, this process is known as oxy acetylene welding. Basically, the metals are placed side by side, with a small gap present between them, and are melted together by the oxy-acetylene what is middle class in england. When they cool down, the melted sections are already bonded to form a weld seam.
Oxy acetylene welding can be used if quickly joining metals together is your only concern because the weld seam formed is not as neat as the ones created by other welding methods. A neutral yorch is also used for welding using a cutting torch, but you need to move your torch in a circular manner so that the metals will melt and pool towards the small gap present between them. While the weld seam formed using this method is strong enough, you can also add filler material using a rod to increase its strength.
An oxy acetylene cutting torch, contrary to its name, is not only used for cutting. You can also use it in different ways, making it such a versatile tool that you must have in your workshop.
Your email address will not be published. Save my name, ox, and website in this browser for the next time I comment. Skip to content Does the thought of using an oxy acetylene cutting torch intimidate you? Runner-up Hobart Medium Duty. Best cheap option Stark Professional. User review. It fits my needs and worked out nicely. Works fine for a cheap welding kit.
Our professional opinion. Great value set which will get the job done. Same quality as "best value" option, however, more expensive. Reputable, American company you can count on. Good budget aceytlene, although with its limitations. Check price. Acetyleen price on Amazon. Best value option Recommendation. ZenStyle Gas Cutting Torch. Runner-up Recommendation. Hobart Medium Duty. Best high-end Recommendation. Best cheap option Recommendation. Stark Professional. Leave a Comment Cancel Reply Your email address will not be published.
How to properly light, adjust and shut down an oxy–acetylene torch
Open acetylene valve on torch. Turn ‘ON’ acetylene regulator and adjust to PSI (15 PSI maximum). Close acetylene valve on torch. 7. Light torch with flint striker: Open acetylene valve on torch. Light flame (striker should be about ? to ? inch from tip). Adjust acetylene to bring flame back down to almost touching the tip. Open oxygen valve slowly on torch and adjust flame. SUPPLIED TO THE TORCH. Lighting the Oxy-fuel torch 1. Turn the acetylene knob on the cutting torch about a quarter of a turn and light the acetylene. Make sure that the flame is up against the tip. If you light up the tip and the flame is away from the tip, decrease the acetylene pressure and let the flame come back against the tip. (Use your safety equipment.) CAPTION 8.
Last Updated: August 30, References Approved. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. There are 24 references cited in this article, which can be found at the bottom of the page.
This article has been viewed , times. Learn more An oxy acetylene torch is an affordable and versatile tool used by many people to heat, weld, solder, and cut metal. It uses extreme heat to function, and setting it up properly is one of the most important steps in using it safely. Using pressure-reducing regulators, connecting gas supplies, and safely lighting the torch flame are all essential parts of learning how to use an oxy acetylene torch. To set up an oxy acetylene torch, start by cleaning any dust or dirt from the valve outlet.
Next, attach the pressure-reducing regulators that allow you to safely start and operate the torch. You'll also need to connect the gas supplies, like the oxygen and the acetylene hoses, to the torch. Once everything is assembled, test the connections for leaks. If there aren't any leaks, then set the correct operating pressure.
To learn how to get a neutral, blue flame, keep reading! Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue.
Article Summary. Part 1 of Fasten oxygen and acetylene cylinders in an upright position. If you have a cylinder cart, place both the oxygen and acetylene cylinders into it.
If not, they should be securely fastened with a chain to a workbench, a wall, or a post. Cylinders should not be able to be knocked or pulled over. Clean the valve outlet of accumulated dust or dirt. This will clear out any dust or dirt that may have settled in the valve. It needs to be cleaned out otherwise the debris might get into other parts of the torch and cause it to malfunction. Connect the oxygen and acetylene regulators to their cylinders.
Tighten the nuts of the regulator connections with a wrench. Use a wrench with a fixed opening rather than an adjustable wrench that is designed specifically for welding tools. You can buy these from a hardware store or a specific apparatus supplier. Rotate the pressure-adjusting screw to the left until it turns freely. Do this for each regulator. The valve in the regulator needs to be closed before cylinder pressure is admitted. Turning the pressure-adjusting screw counter-clockwise removes the pressure from the spring in the regulator.
Open the oxygen and the acetylene valves very slowly. Open the valves slowly to protect yourself and your machine from any potential combustion. Leave the wrench on the acetylene valve while it is open. Think ahead when you are starting a project and bring your tools to your workspace before beginning. Part 2 of Use a hose and hose connections specific to welding and cutting. Oxygen hoses will have a green cover, while acetylene hoses will have a red cover.
Never interchange these hoses as they are meant for different substances. Do not use any oil or grease on the hoses. Attach the oxygen hose to the oxygen regulator and to the torch. The torch should have identifying marks on the body or the handle showing where the hose should be connected.
Most torches have 2 oxygen connections because 1 is used for the cutting jet and 1 is used for the preheat flames. Connect the acetylene hose to the acetylene regulator and to the torch. Whichever connection is not for the oxygen is for the acetylene. Tighten the hose connections with a wrench. Use a non-adjustable wrench to securely fasten both the oxygen and acetylene hoses to the torch.
Part 3 of Close both torch valves. For the oxygen, turn the pressure-adjusting screw on the regulator until the gauge reads about 25 psi. For the acetylene, turn the pressure-adjusting screw on the regulator until the gauge reads about 10 psi.
Leaks can cause harm to you or your surroundings and may lead to spontaneous combustion of the cylinders. Apply a leak-test solution with a brush. Apply the solution to the cylinder valves, the cylinder and regulator connections, and all the hose connections. You can either buy a solution from the store for this specific purpose, or you can dissolve Ivory soap in water to make a thin paste for the same results.
Check the leak-test solution for bubbles. Bubbles indicate that either oxygen or acetylene is coming through the connectors and the connection needs to be tightened or reattached completely. Release all pressure from any system that has a leak. Reattach or retighten as needed, and apply the leak-test solution a 2nd time to test the torch for leaks again.
After completing the testing, make sure to turn off both the oxygen and acetylene. Part 4 of Turn the oxygen regulator pressure-adjusting screw. Slowly do this until you reach the desired pressure. The pressure will be indicated on the delivery-pressure gauge.
Then you will close the torch oxygen valve. If you are using a cutting torch, open only the torch cutting oxygen valve.
If you are using a cutting attachment, open the oxygen valve on the torch handle and the cutting oxygen valve on the attachment. Adjust the acetylene adjuster screw to the desired working pressure. Do not exceed 15 psi. Close the acetylene valve immediately after you obtain the right pressure. Do not release acetylene or other gasses near sources of ignition.
Also, make sure you are working in a well-ventilated area. It is advisable to keep a fire extinguisher in your workspace in case there are any explosions or emergencies. Part 5 of Read it thoroughly before following steps or tips from any other sources. A lot of sites have community forums where people post tips and stories about their experiences that you can learn from.
Use a friction lighter rather than a match for this step. A friction lighter is also called a torch striker, and these can be found at hardware stores. You will see a flame coming out of your torch. Remember to not have the oxygen gas flowing when you go to light the torch. Reduce the acetylene flow by adjusting the torch acetylene valve. The flame should start to produce black smoke around the edges. Once the black smoke appears, start to increase the acetylene flow back up again just enough to get rid of the black smoke.
The lighting procedure should result in a neutral flame, which is blue in color and which does not make a hissing sound. Stop working if the flame suddenly goes out. If this happens, go ahead and relight the torch again right away.