more details about rail track
more details about rail track
Railroad tracks used to be joined with fish plates, metal gussets bolted across the sides of the joints between tracks. Now they are welded into continuous ribbons of steel.
Train railroads are joined together by a process called exothermic welding – a chemical called Thermite is lit off and then sends molten iron into a mould.
This causes the thermite to melt, which in turn melts the plug at the bottom of the cruicle, sending the iron into the gap left between the two railtracks.
The reduction of a metal oxide to form metal by using aluminium powder as a reducing agent is called a thermite reaction.
This reduction property of aluminium is used in thermite welding for joining the broken pieces of heavy iron objects like girders, railway tracks or cracked machine parts
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Railroad, thermite
welding,metal,track,railways,rail joint, railroad,ribbons of steel,Procedures,Track Welding,Rail and Track,
the most famous amusement ride game,roller coaster
A roller coaster
A roller coaster is a type of amusement ride that employs a form of elevated railroad track designed with tight turns, steep slopes, and sometimes inversions.
People ride along the track in open cars, and the rides are often found in amusement parks and theme parks around the world.
Two or more cars hooked together are called a train. Some roller coasters, notably Wild Mouse roller coasters, run with single cars.
The track in a coaster design does not necessarily have to be a complete circuit, as shuttle roller coasters demonstrate. Most roller coasters have multiple cars in which passengers sit and are restrained.
Steel Vengeance is a steel roller coaster at Cedar Point in Sandusky, Ohio.
The roller coaster was manufactured by (RMC) and opened to the public on May 5, 2018. It features RMC's patented I-Box Track technology utilizing a significant portion of Mean Streak's former support structure.
Upon completion, Steel Vengeance set 10 world records.
Originally constructed by Dinn Corporation, Mean Streak opened to the public on May 11, 1991, as the tallest wooden coaster in the world with the longest drop height.
After more than 25 years of operation, Cedar Point closed Mean Streak on September 16, 2016, casting doubt and uncertainty regarding the ride's future.
Over time, the park dropped subtle hints about a possible track conversion, which was officially confirmed in August 2017.
It was marketed as the world's first hybrid hypercoaster – a wooden and steel roller coaster at least 200 feet (61 m) in height – and reemerged as Steel Vengeance. A minor collision on opening day led to a temporary closure and later modifications from RMC.
how do pistons move in an engine HD video
how do pistons move
During the admission stroke, the cylinder is pulled somewhere near the driving rod. While this is occurring, the bay valve opens and permits fuel and air to blend. For the pressure stroke that follows,
the bay valve closes and the cylinder moves back up the chamber to pack the blend of fuel and air.
During the force stroke, the flash fitting touches off the fuel and air blend, which pushes the cylinder down. For the last stage, the fumes stroke, the outlet valve opens. Fueled by the driving rod,
the cylinder is pushed back up the chamber. This powers exhaust gases out the outlet pipe.
Cylinder rings are basic to the working of a cylinder, as they give a seal between the cylinder and the chamber to encourage better movement. These parts additionally forestall spilling between the pressure and sump compartments.
Pistons work by transferring the force output of an expanding gas in the cylinder to a crankshaft, which provides rotational momentum to a flywheel. Such a system is known as a reciprocating engine
Different alarm sirens police vehicles, ambulance and firetrucks
Different alarm sirens
The main reason for multiple sounds, though, is a little different and frankly a lot more urgent: If all emergency vehicles used the same type, their drivers wouldn't hear each other's sirens while speeding to the same intersection ,
this is known as the wash-out effect and would be more likely to crash into each
do the number of up/down tones mean a different emergency?
eg: 3 times means car accident, 4 times means fire, 5 times means medical, etc? A: No, the siren will sound as long as it does until it is shut off by the first responding firefighter.
Train passing through market thailand and vietnam
Maeklong Railway
The Mae Klong Railway was built in two separate stages. The Tachin Railway Ltd, founded in 1901 with a concession from the crown of Thailand to construct a line to Samut Sakhon from Bangkok built the 33 kilometer Mahachai Line.
it opened in 1904 with eight stations.
The Maeklong Railway
Company opened the 34 kilometer Ban Laem Line, using three steam locomotives The lines merged in 1907 to form the Maeklong Railway Ltd.
It was originally opened as a goods line, transporting produce from the fishing ports of Samut Sakhon and Samut Songkram to the Bangkok markets.
The Government of Thailand purchased the now-merged company in 1926 and electrified the eastern section, turning it into an interurban tramway.
The Thai military later gained control of the railway in 1942, during World War II, and the line was brought under the control of the State Railway of Thailand in 1952 and fully merged into it by 1955.
During this period of merger, the electrification was removed from the eastern section, with steam-hauled and later diesel-hauled trains replacing the old tramcars.
In 1961 the line's original terminus at Khlong San was closed and replaced with a bus stop, to ease traffic congestion in Bangkok, with Wongwian Yai becoming the new terminus.
watch under train wheel how look like
train wheel how look like
The wheels on each side of a train car are connected with a metal rod called an axle.
This axle keeps the two train wheels moving together, both turning at the same speed when the train is moving .
This is where the wheels' geometry comes in.
To help the wheels stay on the track their shape is usually slightly conical
The instantaneous temperature between the wheel and rail have been measured up to 4,000degF. That's enough to melt the metal and definitely enough to alter the characteristics and coloration.
Do you know
Sweeping curves. Lots of miles.
How long does a train wheel last
While many of us change our car tires every 50,000 miles or so, Metro rail wheels can travel as far as 700,000 miles before they need to be replaced.
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The fate of northern Krakatoa has been the subject of some dispute among geologists. It was originally proposed that the island had be...
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Trains actually don't make that sound. The rails make it. A rail is not a single metal piece but a series of rail pieces with ce...
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more details about rail track Railroad tracks used to be joined with fish plates, metal gussets bolted across the sides of the joints ...
