Too much oxygen causes a wide concave cut. The operator must select the proper fuel gas for the task and the correct size cutting tip. The source of gases and hoses both fuel gas and oxygen must be capable of delivering the required flow at the prescribed pressure. Oxygen and fuel gas pressure must be set correctly. The preheat flames low and high must adjusted to the proper ratio of oxygen to the fuel gas. The cutting speed must be set according to the cut chart. The pierce height, preheat time and pierce time must be set.
The correct torch tip to work distance must be maintained during cutting. Basic systems require the machine operator to manually adjust pressures, pierce rate control and process event timing for each job. Once the machine operator selects the torch manufacturer, material thickness and fuel gas to be used, the cut chart typically displays suggested cutting speed, gas pressures, the timing of process events preheat time, pierce time and the correct size torch tip.
The gas management system should provide the ability to individually control pressures for low preheat fuel, low preheat oxygen, high preheat fuel, high preheat oxygen and cutting oxygen. It should also control the rate of rise of the cutting oxygen during piercing to minimize excessive spatter during the pierce. Hypertherm CNCs provide analog outputs that can control proportional gas regulators as shown in the diagram below. Using this strategy allows you to reduce the number of regulators needed for the gas delivery system from the normal six to three as shown below.
When adjusting the gas pressures or timers, use the Apply soft key to send the pressures to the cutting system. As you are fine-tuning the system for your requirements, you can select Apply, change the pressures on the screen, and select Apply again without exiting the screen.
The system controls preheat height, pierce height, cutting height and retract height after the cut. Available in six machine sizes, KANO is configured with a Hypertherm plasma system and your choice of three cutting table styles. The TracKlean table is comprised of two unique traveling cars, each with a slag bin and a detachable plow for fast part retrieval and easy cleaning.
As the recommended fume extractor for our plasma cutting machines, the Fusion Collectors from RoboVent offer perfect air quality solution for cutting-edge processes. The Zoned Down Air Draft table with mechanically activated zone damper doors offers the cut quality benefits of cutting dry and excellent fume extraction. The Water Table with adjustable water level offers a lower cost, good fume capture and reduced plate warpage.
Of all the companies we deal with in the equipment and tooling portion of our business, Park Industries response and service are the very best. The easy communication we have with tech support when any issues arise makes operating our Kano stress-free so we can focus on building our business.
We are constantly finding new ways to incorporate the machine into our daily operations. How Thick!? Tags cutting safety. Posted in Cutting. Tags specialty gas regulator gas regulation cutting welding tips maintenance gas control flowmeter Did You Know acetylene heating brazing eye protection safety torch cutting tip soldering hoses gas flux phos-copper gas welding braze welding oxygen filler metal single stage regulator valve seat oxyfuel low carbon steel liquidus solidus filler metals oxy-fuel gas pressure CGA gas cutting check valve flashback alloys selection alternate fuel propane natural gas pipeline regulator station regulator flashback arrestor injector torch capillary action AWS lead plumbing lead-free.
Archive May 1 Shifting priorities in times of crisis March 2 Proper use of purge devices can extend the life of specialty gas equipment in corrosive gas systems What is the difference between A, B and C welding hoses? April 2 Did you know that you can cut titanium with an oxy-fuel torch? Did you know that you can solder an HVAC connection? May 3 Did you know that gas flames produce infrared radiation? Did you know that a protocol station can extend the life of a regulator?
This will ignite the molten steel. If a violent reaction instantly starts, the steel has ignited, and you can gradually increase pressure until the jet is cutting completely through the metal. In this case, release the oxygen handle release and continue to allow the flame to heat the metal more. Begin moving the torch tip slowly along the line of your cut. Once the jet is cutting through the steel, start moving the torch along the line you drew.
You should observe that almost all of the sparks and molten slag are being blown out the back or bottom of your cut. If this flow of superheated material slows or backs up, slow your forward speed or stop and let the metal heat more. Continue cutting until you have parted the metal or finished the cut.
Make sure the slag and any droplets of heated metal do not get underfoot. Even sturdy boot soles will burn through if you find yourself standing on a large piece. Turn off the torch in the reverse order of how you turned it on. First, turn off the torch valve, then turn off the oxygen.
Next, turn off the cylinder valves on the oxygen tanks and back out the regulator pressure screw. Repeat this for the acetylene tank.
In this case, always defer to the manufacturer's instructions. Cool the workpiece with plenty of water. However, you should be aware that dipping a superheated piece of steel into a bucket or stream of cold water will create an instantaneous cloud of very hot steam. If you're using quench- or temper-type steels, allow the steel to cool naturally, as water could cause them to warp.
When finished using the cutting torches, how do I shut everything off? When I am finishing using the torches, do I back the regulators off or leave them in at the operating pressure? If you're going to be using them within the same day, it's fine to leave them at operating pressure, but it is best to shut everything off tank valves off first and purge your hoses and regulators.
Once you're done for the day, just open the valves on the torch one at a time until you can't hear any gas flow, close them back up, then close up your regulators to prevent any regulator shock when you next open up the tanks. Not Helpful 11 Helpful Most manufacturers recommend shutting off the the fuel torch valve first, then the oxygen torch valve. Then close both the oxygen and fuel tank valves. Next, open the acetylene torch valve to drain the fuel until the line and tank pressure gauges read zero, then close the valve.
Repeat this step with the oxygen torch valve. Have someone else do the cutting or ask for further instruction until you comfortable enough to try. It is not difficult with the proper training. Not Helpful 4 Helpful 6. Will an oxygen regulator that is connected to an opened cylinder but not with a hose leak through to atmosphere, assuming the T handle is backed completely out? They're not supposed to bypass, but sometimes do. You may need a new regulator. Not Helpful 5 Helpful 2. This is in case the cylinder has a leak, acetylene is one of the most volatile gases know to man.
Not Helpful 8 Helpful 3. You are holding the tip too close. Hold it no closer than the width of your blue flame at the tip. Also, if you're blowing a starting hole, hold the torch up and away from your work just before you hit the oxygen.
Not Helpful 4 Helpful 2. It works by oxidizing the work piece extremely fast to cut through it, if it doesn't rust you can't cut it. Not Helpful 5 Helpful 3. Contrary to pictures 3 and 4, shouldn't I adjust the O2 and fuel gas ratios for the desired flame with the torch valves, not the cylinder valves? Not Helpful 5 Helpful 0. Include your email address to get a message when this question is answered.
Leaking gas at these fittings can produce an instant fire. Helpful 0 Not Helpful 0. Keep animals and children away from areas where this type of hot work is being done. Have flashbacks installed on both ends; it's much safer than only one fitted. Submit a Tip All tip submissions are carefully reviewed before being published.
Having a fire watch is required on OSHA-regulated projects. Helpful 21 Not Helpful 7. Helpful 15 Not Helpful 8. Steel and carbon steel are the only materials you should attempt to cut. Aluminum, stainless steel, and other metals and alloys cannot be cut with a cutting torch. Helpful 3 Not Helpful 0. Use a cutting torch only in a well-ventilated area, away from combustible materials.
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