";s:4:"text";s:4789:" A backfire is combustion or an explosion produced by a running internal combustion engine that occurs in the exhaust system rather than inside the combustion chamber. An explosion of prematurely ignited fuel or of unburned exhaust gases in an internal-combustion engine. Unburnt fuel that is ignited in the exhaust system can produce loud sounds even if flames are not present at the tailpipe. Define backfire. A visible flame may momentarily shoot out of the exhaust pipe under some conditions.
Learn more. This is called an afterburn or backfire since a backfire occurs in the exhaust system.
Backfire in welding occurs when there is high oxygen pressure but low fuel pressure, while flashback is a backfire that occurs inside the mixing chamber.
Backfires & Flashbacks
The accidents happening during these processes are very typical and involve the number of injuries. With this arrester installed downstream from the regulator and cylinder, pressure from the flashback activities a by-pass valve, shutting the flame away from the tank, through What should be the maximum pressure limit for oxygen & fuel for cutting?? (of a plan) to have the opposite result from the one you intended: 2.
n. 1.
(of an engine) to make a…. How to use backfire in a sentence. The very important thing is that in the case of flashback do not change the setting of torch valves or regulator adjusting screws.• Draining cylinders dawn to the working pressure of the tip in use.• Never hold the burning tip too close to the work.This device prevents the explosions from flashback through regulators, cylinders and supplies. Post was not sent - check your email addresses! This pressure shall not be exceed in any case.1. The technical terms and descriptions of various malfunctions are:Flame enters into nozzle or torch with a violent popping sound.Flame either extinguishes or re-ignites at the nozzle.Flame enters into nozzle or torch and continues burning inside with a hissing or whistling noise.Flame enters into torch and travels back into supply system.The speed of such a flashback is more than twice the speed of sound.Gas with higher pressure flows back through the torch into the hose with a lower pressure.This creates a dangerous mixture of gases in the lower pressure hose.The use of a spark lighter is recommended for lighting torches.If the flame snaps out when the torch is in use, it is because:If the nozzle has become overheated, plunge nozzle and head into cold water keeping the oxygen valve open.
backfire synonyms, backfire pronunciation, backfire translation, English dictionary definition of backfire. The backfire reaches only into the welding or cutting torch tip and it never travels beyond the torch tip.Backfire is the momentary retrogression or burning back of the torch flame, into the welding or cutting torch tip accompanied by a loud popping sound and also accompanied by the immediate reappearance or the complete extinguishments of the flame.• Close both the oxygen and acetylene station or cylinder valves immediately. The momentary recession of the flame into the welding or cutting tip followed by reappearance or complete extinction of the flame. The flame burns back into or even beyond the mixing chamber and may travel through hoses. Gas welding and cutting process are common in many engineering factories.
The backfire reaches only into the welding or cutting torch tip and it never travels beyond the torch tip. Amongst the various types, the backfire and flashback are the more common.