What fuel gas has the fastest burning velocity?

Acetylene. Acetylene produces the highest flame temperature of all the fuel gases. The maximum flame temperature for acetylene (in oxygen) is approximately 3,160°C compared with a maximum temperature of 2,828°C with propane.

What reduces an oxyfuel gas cylinder pressure to a lower constant working pressure?

What is the purpose of a pressure regulator? Reduce the high cylinder or system pressure to the proper lower working pressure, it is important for the regulator to keep the lower pressure constant over a range of flow rates.

Which of the following is a cause of a backfire?

Explanation. Common causes of backfire are running rich (too much fuel going into cylinders) or faulty ignition, possibly a fouled (dirty) spark plug, coil, or plug wire. Pop-backs are usually caused by problems with timing.

What is the minimum tensile strength of a class rg45 welding rod?

Unibraze RG-45 produces ductile porosity free welds. It is recommended where ductility and machinability are most important. This rod is excellent for the welding of steel sheets, plates, pipes, castings and structural shapes where the minimum tensile strength requirement does not exceed 45 ksi (310 MPa).

Is mixed with the fuel gas to form a high temperature preheating flame?

Oxygen is mixed with the fuel gas to form a high- temperature preheating flame. The two gases must be com- pletely mixed before they leave the tip and create the flame.

How to Determine Which Gas Moves Faster

Which of the following fuel gases has the highest flame temperature?

Acetylene produces the highest flame temperature of all the fuel gases. The maximum flame temperature for acetylene (in oxygen) is approximately 3,160°C compared with a maximum temperature of 2,828°C with propane.

What gas is best for heating metal?

LPG (liquefied petroleum gas)

LPG is recommended for heating thicker weld metals.

Why would you move the welding hoses before you start welding?

Why would you move the welding hoses before you start welding? To eliminate any twisting it may have that could make it harder to manipulate the torch.

Which gas is used to weld and cut iron metal?

Acetylene is the primary fuel for oxy-fuel welding and is the fuel of choice for repair work and general cutting and welding.

Which of the methods of applying weld metal only requires the welder to manipulate the welding gun?

In semiautomatic welding, defined as “manual welding with equipment that automatically controls one or more of the welding conditions,” the welder manipulates the welding gun to create the weld while the electrode is automatically fed to the arc.

Why do turbo cars backfire?

The reason for the exhaust backfiring is essentially the same reason why the normally aspirated engines perform a similar dance. Turbochargers take time to spin or spool up to their normal speed to create boost. These turbo shaft speeds are incredibly fast — anywhere from 60,000 to 250,000 rpm and higher.

Why does my exhaust pop when I let off the gas?

An afterburn or backfire from a vehicle's engine on deceleration happens when unburnt fuel combusts or ignites in the exhaust pipe. The result is a loud bang or pop when you move your foot off of the gas pedal. Take note that this instance can occur in many vehicles, including trucks and motorcycles.

Why does my v8 backfire?

An engine backfire occurs whenever the air-fuel mixture in your car combusts somewhere outside the engine's cylinders. This can cause damage to your car's exhaust or intake if left unchecked -- and it also means that your car's engine isn't making as much power as it should, and is wasting lots of fuel.

What are Siamese hoses?

A siamese connection or splitter in fire protection engineering is a pipe fitting that allows two or more fire hoses to be connected to a single standpipe riser at the same general location.

Why is acetylene the most popular fuel gas used for oxyfuel welding?

Acetylene produces a flame temperature of ~3100 degree Celsius along with oxygen. This high flame temperature makes acetylene a suitable choice for gas welding steel. 2. Welding: When burned in oxygen, acetylene produces a reducing zone, which easily cleans the metal surface.

What gas is best for MIG welding?

The basic gas for MIG/MAG welding is argon (Ar). Helium (He) can be added to increase penetration and fluidity of the weld pool. Argon or argon/helium mixtures can be used for welding all grades.

Can you weld with nitrogen?

Yes, nitrogen can be used for MIG welding. This semi-inert gas adds certain good qualities to the weld when used as a shielding gas or in other forms. However, there is a negative side to the same as well.

Why SS is not cut by gas cutting?

Metals such as aluminum and stainless steel cannot be cut with Oxy/fuel due to the formation of an oxide that prevents oxidation from fully occurring.

Can you weld with oxygen and acetylene?

Oxyacetylene welding, commonly referred to as gas welding, is a process which relies on combustion of oxygen and acetylene. When mixed together in correct proportions within a hand-held torch or blowpipe, a relatively hot flame is produced with a temperature of about 3,200 deg.

Can you oxy-acetylene welding aluminum?

Metal which can be welded with oxy-acetylene flame include iron, steel, cast iron, copper, brass, aluminum, bronze as well as many alloys may be welded. The oxy-acetylene flame is also used for cutting metal, case hardening and annealing.

Can welding gas explode?

An explosion will occur if all of the following conditions exist concurrently: • There is an explosive concentration of flammable gases (fuel). There is an adequate concentration of oxygen to support combustion of the flammable gases. There is an ignition source.

What burns faster propane or butane?

Propane burns hotter than butane, with the price of giving off more carbon monoxide. You should never use a propane torch inside unless there is proper ventilation. Propane torches have a bigger tank, making them less portable than butane torches.

What gas is hotter than propane?

MAP-Pro Vs. Propane. MAP-Pro gas burns at a temperature of 3,730 degrees Fahrenheit, while propane burns at 3,600 F. Because it heats copper faster and to a higher temperature, MAP-Pro gas is a superior alternative to propane for soldering.

Can you weld with propane?

Firstly: Propane cannot be used for Gas Welding. When acetylene burns in oxygen, it creates a reducing zone that cleans the steel surface. Propane do not have a reducing zone like acetylene and can hence not be used for Gas Welding.