JIS Z3251 DF2A-400-B
Notes on Usage
Welding Positions:
1. Preheat ing is unnecessary, in general, large weldments of
hardening property should be preheated.
2. In case of high cooling speed, preheat or postheat to prevent
difficulty of machining caused by hardening.
3. Pay attention to blow hole at the arc starting.
4. Dry the electrodes at 350~400℃(662~752℉) for 60 minutes before
use.
Applications
JIS Z3251 DF2A-400-B For intermetallic abrasion, hardfacing of fans, upper rollers and sprockets.
Characteristics on Usage
Maching is possible, in general. Hardness increases by quenching
after maching. It is suitable for intermetallic abrasion and moderate
impact abrasion.
Type of Current
AC or DC+
