During cleaning, grinding wheels can become coated with carbon or other contaminants which can then be smeared on the finished surface,re-contaminating the part to be repaired. For this reason, the...

The most important aspect in the welding of all cast irons is to have the surface clean and free of defects prior to welding.New Castings:All sand, slag, and scale must be removed from the area of ...

As aluminum is welded with AC rather than DC mode, the electrical characteristics are different compared to welding mild steel and the amount of energy put into the tungsten electrode is higher whe...

To clean joints and weld wire, proper parameters, and proper inert gas shielding, welder technique requires attention when titanium is being welded. Improper technique can be a source of weld conta...

There are a number of ways of identifying the type of cast iron that is to be welded.Visual observation;Grey and SG cast iron have a dirty, dark grey appearance due to the presence of graphite in t...

Welding with titanium requires extreme cleanliness. Grind or file off mill scale. Clean surface oxides with a 35% nitric - 5 % hydrofluoric acid solution at room temperature, then rinse with water ...

 Grey Cast IronsGrey cast iron nominally contains 2.5-4.0% carbon and high silicon. It is used for many applications, including those under conditions of static compressive load, lightly stressed p...

For both TIG (Gas Tungsten Arc welding or GTAW) and MIG (Gas Metal Arc Welding or GMAW) pure argon is used for aluminum materials up to ½” thickness. Above ½” thickness, operators may add anywhere ...