TWP56
TWP56 is a chromium-based flux cored wire electrode used to protect equipment and parts from moderate wear and impact. TWP56 has wide welding parameters, allowing for easy installation, and its compatible compostion allows it to be applied on a wide array of materi- als.
Applications
TWP56 can be applied to carbon steel, manganese base materials and mild or alloy steels. The maximum recommended deposit thickness of TWP56 is 2 – 3 layers, or 1/4” (6.35mm).
TWP56 is primarily used to cover exposed bolts and seams from installation of T138 wear plate and parts, however, TWP56 wire and electrodes are also welded to parts and equip- ment which require protection only on one or two concentrated wear areas.
Welding Procedure
TWP56 should only be applied on clean surfaces free of contaminants. TWP56 electrode should be held verticle to the work piece, and a short arc should be maintained.
Depending on the parent material, pre-heating is necessary and post weld cooling should be gradual to keep ‘cross-checking’ or stress relieving to a minimum. When welding to manganese steels, a ‘cushion layer’ is recommended. The resulting deposit is not machinable or forgeable, and grinding is only possible with diamond tools. TWP56 is versatile and has a wide range of welding parameters.
Moderate abrasion and impact resistance
| Diameter | Stickout +/-
.25”(6.35mm) |
Amps | Volts |
| .045” (1.1mm) | 1.5” (38.1mm) | 100 – 220 | 18 – 24 |
| 1/16” (1.6mm) | 1.5” (38.1mm) | 160 – 260 | 20- 26 |
| 3/32” (2.4mm) | 1.5” (38.1mm) | 280 – 340 | 22 – 26 |
| 7/64” (2.8mm) | 1.5” (38.1mm) | 320 – 400 | 25 – 28 |
The above is based on a FCAW welding process with DC Reverse polarity, using no shielding gas.
TWP56 Electrode Welding Parameters
| Diameter | Amps |
| 1/8” (3.25mm) | 100 – 140 |
| 5/32” (4.0mm) | 120 – 160 |
| 5/32” (4.0mm) | 120 – 160 |
| 3/16” (5.0mm) | 160 – 180 |