Oxy-acetylene welding is one type of welding process used in metal fabrication. This type of welding uses a torch fed by an oxygen and acetylene fuel mixture to heat the metal parts to be welded as well as the welding filler rod used to add material to the weld. Oxy-acetylene welding has been in use since the turn of the 20th century, and does not require electrical power, allowing the welding equipment to be used in a wide variety of environments.
Fusion Welding(Oxyacetylene)Processes:
Correct turn valve on, and check pressure of gas. Use weld lighter spark carefully fire gas, adjust fire to neutral flame. Find two same size steels plates, and use weld magnet hold one of them. One hand hold the weld torch, other hand hold weld filler rod. Put two steels plates connect a sideways. Movement of rod straight, and motion of blowpipe sideways. After finished, turn off all valve, and put all equipment back.
Work in date: 04/09/2012
Brazing Processes:
 |
| Bronze welding flux for braze welding of cast iron, steel, steel castings, malleable iron, etc. |
- Correct turn valve on, and check pressure of gas.
- Use weld lighter spark carefully fire gas, adjust fire to oxidizing flame.
- Find two same size steels plates, and use weld magnet hold one of them and leave a gap between steels.
- One hand hold the weld torch, other hand hold weld filler metal and with bronze weld flux.
- Put two steels plates connect a sideways.
- Movement of weld filler metal straight, and motion of blowpipe sideways.
- After finished, turn off all valve, and put all equipment back.
Metal splinter, Hands and eye injuries, Dust particles, Hot Metal, Sparks, Sharp edges and burrs, Explode.
List some photos from workshop:
Work in date: 18/09/2012
MIG Welding
Metal Inert Gas (MIG) welding, also sometimes called Gas Metal Arc Welding (GMAW) is a process that was developed in the 1940s for welding aluminum and other non-ferrous metals. MIG welding is an automatic or semi-automatic process in which a wire connected to a source of direct current acts as an electrode to join two pieces of metal as it is continuously passed through a welding gun. A flow of an inert gas, originally argon, is also passed through the welding gun at the same time as the wire electrode. This inert gas acts as a shield, keeping airborne contaminants away from the weld zone.
Process:
The Welder: Inside the welder you will find a spool of MIG wire and a series of rollers that pushes the wire out to the welding torch. There isn't much going on inside this part of the welder, so it's worth it to take just a minute and familiarize yourself with the different parts.
The Gas Supply: Assuming you are using a shielding gas with your MIG welder there will be a cylinder of gas behind the MIG. This is either 100% Argon or a mixture of CO2 and Argon. This gas shields the weld as it forms. Without the gas your welds will look brown, splattered and just generally not very nice.
The Welding Torch: The welding torch is the business end of things. It's where most of your attention will be directed during the welding process. The MIG torch consists of a trigger that controls the wire feed and the flow of electricity.
 |
| Clamp the negative lead from the welder onto your project or, in this case, the welding table |
 |
| Butt joint |
 |
| Lap joint |
 |
| T-joint |
 |
| Edge joint |
No comments:
Post a Comment