Welding and some of the terms which i

In summary, the conversation is about asking for help in understanding various terms related to welding and steel, such as undercooling, quick solidification, martensite, austenite, pearlite, ferrite phase, phase diagrams, TTT and CCT, diffusion of carbon atoms, low and high carbon content, dendrites, thermal gradient, rate of solidification, grain growth rate, and solidification front. The speaker is also asking for links to information that they found but did not fully comprehend.
  • #1
siukwok
8
0
Dear all,

i need help in finding out the terms below. Tried goggle it but fail to really understand them. Anyone can help? thanks!

1. Undercooling in welds
2. Quick solidification
3. Martensite, austenite, pearlite, ferrite phase for steels
4. Phase diagram for steels
5. Difference between TTT and CCT based on 0.9% carbon content
6. Diffusion of carbon atoms, time dependent
7. Low and high carbon content
8. Dendrites
9. Thermal gradient, rate of solidification, grain growth rate and solidification front
 
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  • #2
siukwok said:
Dear all,

i need help in finding out the terms below. Tried goggle it but fail to really understand them. Anyone can help? thanks!

1. Undercooling in welds
2. Quick solidification
3. Martensite, austenite, pearlite, ferrite phase for steels
4. Phase diagram for steels
5. Difference between TTT and CCT based on 0.9% carbon content
6. Diffusion of carbon atoms, time dependent
7. Low and high carbon content
8. Dendrites
9. Thermal gradient, rate of solidification, grain growth rate and solidification front

Could you give us some links to the information that you found but did not understand? Show us what you read, and tell us what part you do not understand.
 

What is welding?

Welding is a process of joining two or more pieces of metal together by melting and fusing them. This is achieved by heating the metal to its melting point and then adding a filler material that binds the two pieces together when it cools.

What are the different types of welding?

There are many different types of welding, including MIG (Metal Inert Gas) welding, TIG (Tungsten Inert Gas) welding, Stick welding, and Flux-Cored Arc Welding (FCAW). Each type uses a different method to heat and join the metal pieces.

What are the safety precautions for welding?

Welding can be a dangerous process, so it is important to take safety precautions. This includes wearing protective gear such as a welding helmet, gloves, and apron to protect from sparks and UV radiation. Adequate ventilation is also important to avoid inhaling fumes and gases.

What is the difference between welding and soldering?

Welding and soldering are both processes used to join metal pieces, but they differ in the temperature used. Welding uses high heat to melt and fuse the metal, while soldering uses lower heat to melt a filler material, which then binds the pieces together.

What are some common welding terms?

Some common welding terms include electrode, which is a rod used to conduct electricity and create the arc needed for welding, and slag, which is the residue left behind after welding. Other terms include weld bead, which is the visible line created by the melted metal, and penetration, which refers to the depth of the weld into the base metal.

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