FLUX-CORED WIRE
RAILBUILD 540 Flux-Coated Electrode is designed specifically for build-up of rail ends, switch points, carbon steel frogs. The special alloying resists high-speed impact and abrasion. The smooth running characteristics allows even the inexperienced welder to produce a quality repair. Deposits can be built up to heavy thicknesses without the danger of cracking.
PROCEDURES
Remove chipped, cracked and fatigued material by grinding. DO NOT USE AIR CARBON ARC GOUGING ON CARBON STEEL. Rail and rail components should be pre-heated to 700° Fahrenheit. Interpass temperature should be maintained at 700° Fahrenheit. Post heat to 1000° Fahrenheit.
| DC Reverse Polarity | |
| Hardness (first pass): | 40-42 Rc |
| Hardness (subsequent passes): | 36-38 Rc |