OTHER QUARRY AND MINING EQUIPMENT
pages 1-26, 1-25, or 1-22 to top of corrugations (Step
C). Complete sides with hard-facing alloy (Step D).
Welding on the reverse side of jaw will normally
Crusher jaws are being rebuilt and hard-faced
correct minor distortion caused by shrinkage.
successfully, but they represent one of the most critical
applications in the crushing industry and close
adherence to welding procedures is a must.
If you overheat the jaw or allow it to warp too much, it
must be heated, straightened, reheated, and quenched -
uneconomical at best.
CAUTION: Do not overheat jaws made of manganese
(and almost all of them are). Prevent, or at least,
This rock feeding and scalping mechanism is subject to
Welding Procedures: Pre-bend the jaw in a heavy,
very high impact and severe abrasion. Use electrodes
tilting fixture fabricated of railroad rails or equivalent
on pages 1-22, or 1-20 to restore worn areas (Figure
(Figure 2-7 1). Skip weld to avoid overheating; do not
heat jaws above 5000 for prolonged periods. Tack
short manganese bars to jaws using electrodes on
pages 1-22 or 1-20, as shown in Step A of Figure
2-71. Complete fillet as shown in Step B. Buildup
sides of corrugations using the above-mentioned
electrodes and apply two layers of electrodes on