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E7018---- I'm adding this to the answer. Never having welded rail I have seen a video of one process. It is called Thermite Welding. A mold or dam is built around the joint where rail ends meet. A mixture of Aluminum Oxide and iron powder is poured into the mold and ignited. The mixture burns at a very high temperature melting the iron powder and the ends of the rails. After cooling the slag is hammered off and the extra weld metal is ground to the shape of the rail. Google Thermite welding. A video is available.
What else can I help you with?
What is the welding method and welding rods for weld EN 24 steel?
d2
What is a fusion weld?
A fusion weld has no filler material. The pieces to be joined are touching and heat is applied at the joint. The edges melt and "fuse/weld" together. TIG or Oxy-fuel Welding is used. This type of welding is considered to be pure as nothing is added to the weld.
What is the saw welding?
saw stands for suberged arc welding, where the weld is submerged underneath the flux
What is meant by the term welding and draw various welding symbols?
Welding is the process of joining two metals, usually involving a heat source. Welding symbols are the symbols used on part prints or assembly drawings to show size and type of weld, the specific welding process, and many other variables pertaining to that particular weld. A welding symbol looks like an arrow pointing to the location of the weld, with a horizontal line 'carrying' other symbols and numbers that describe how to make that weld. A picture of a welding symbol can be found when an image search is done.
What do you mean by seam welding where it is used?
seam welding is a process that produces a weld at the faying surfaces of two similar metals where its used depends on which metal you look to weld
What is 4g welding?
4G is a welding position. The '4' means the weld is to be made in the overhead position. The 'G' means the weld is a groove weld.
Why is the thermit reaction used on railway lines?
The thermit reaction is used on railway lines to join or weld together pieces of steel rails. It creates a strong and durable bond between the rails, which helps to maintain the structural integrity of the track and prevent rail breaks or gaps. Additionally, thermit welding is a fast and efficient method that can be done on-site without the need for specialized equipment.
What does a welding instructor do?
Teach you how to weld
Why the slag come in welding?
Slag in welding is formed when the flux coating on the welding electrode melts and lays over the weld pool. It helps protect the weld from atmospheric contamination, acts as a coolant, and facilitates the removal of impurities from the weld. After the weld cools, the slag can be easily removed.
Slage inclusion welding defect?
Slag is normally seen as elongated lines either continuous or discontinuous along the length of the weld.
How close can one weld be to another weld?
Depends on what you are welding, but generaly welds can meet, or even weld on top of a weld.
What is weld spatter?
Weld spatter refers to the small bits of molten metal that can be expelled from the welding process. It can occur when excess welding wire or flux is present, leading to weld spatter landing on the workpiece or surrounding areas. Weld spatter can cause damage to the welding equipment, affect the quality of the weld, and create safety hazards.
What is the welding method and welding rods for weld EN 24 steel?
d2
What is the function of slag for welding?
Slag in welding acts as a protective layer on the molten weld pool. It helps to prevent contamination from the atmosphere, improve the weld's appearance, and facilitate the solidification process of the weld metal.
How much are classes for welding?
Classes for welding are to help you learn how to weld and how not to burn yourself. They have books on how to weld and everything to do with it.
What is the difference between a weld symbol and a welding symbol?
A weld symbol is a representation of a cross section of a given weld. A welding symbol is a composite containing a weld symbol, reference line, and arrow. Additional information can be included in supplementary symbols, and dimensions.
Can you weld steel to stainless steel?
Yep, you can weld steel to stainless and you can weld stainless to steel. You can use steel or stainless welding rod in either case but the steel or steel welding rod will of course rust.
