Labounty 513914, Руководство по безопасности, эксплуатации и техническому обслуживанию

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Page 16 Section 5 Maintenance
MOBILE DEMOLITION PROCESSORS
TOOTH BUILD-UP AND HARDSURFACING
continued
5. To hardsurface the tooth, start by applying parallel passes of AWS E7018 build up running the length of
the tooth (Figure 5-8). These single passes should be approximately 1/2" (13 mm) apart and will serve as an
underlayment for the hardsurface rod.
6. Apply a bead of Amalloy 814H rod or equivalent directly on top of each of the underlayment beads. It is
important to use an air-operated slag peener on each pass of weld to relieve stress.
7. Taper the ends of each hardsurface bead by grinding in line with the cutting edges. Do not undercut the
weld with the grinder.
8. When welding and grinding is complete, peen the welded area until it is shiny or until the peener cannot
dent the weld anymore (typically 5 to 10 minutes). This will harden the welded area.
9. When finished, be sure to cover the reworked teeth with a heat blanket to allow them to cool slowly.
FIGURE 5-8
DO NOT apply the hardsurface directly to the parent
material.
NOTICE
0.50" (13MM)
HARDSURFACE BEADS