Quantcast Figure 2-64. Welding Limits on Crusher Roll Shells

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REBUILDING AND HARD-FACING CRUSHER
ROLL SHELLS (Continued)
8. Correct amperage and stepover will insure proper
bonding of weld bead to base metal. This is
particularly true of high-alloy materials which, by
nature, are very fluid.
The proper combination of welding variables
produces sound weld beads and provides maximum
deposition rate (Figure 2-65).
9. The submerged arc process should not be used for
rebuilding rolls; heat input can cause serious
cracking and roll failure.
FIGURE 2-64. Welding Limits on Crusher Roll Shells
2-70





 


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