During the process of using diamond saw blade, there are always some problems will occur, some are the defect of the blades, some are caused by the improper use. Below are 9 normal problems caused by the improper use of blade, but not the responsibility of the diamond blade manufacturer.
1.SEGMENT LOSS
CAUSE: Blade burnd due to insufficient water, usually evident by dark blue steaks on the core beneath the segment, or heat(burn) marks on the segments, also by extreme side pressure, i.e., machine abor bent or operator neglect.
SOLUTION: Segment can be replaced. Normally blade doesn’t need to be re-blanked.
2.BLADE STOPPED CUTTING (LIFE STILL REMAINS)
CAUSE: blade too hard for application
SOLUTION: can be dressed on softer material, such as haydite block or silica brick.
CAUTION: Glazing will usually continue, unless softer material is intermittently cut or softer bonded blade is used.
3.VERTICAL HAIRLINE CRACKS APPEAR IN SEGMENTS
CAUSE: Normally, blade too hard for application, RPM too high.
SOLUTION: softer bond must be used if determined this is the problem occurs most often in concrete cutting where much harder & more abrasive-resistant metal bonds are used.
4. VERTICAL HAIRLINE CRACKS APPEAR IN CORE
CAUSE: possibly bond too hard for application, or due to unforseen circumstances blade does not have proper tension for r.p.m required.
SOLUTION: softer bond, if it’s determined the bond is too hard. Otherwise customer must review all circumstances,i.e.,r.p.m, machine, and material to be cut. Check holes can be drilled at base of crackes, depending on life remaining blade size, and steel core fatigue factors.
5. HORIZONTAL HAIRLINE CRACKS APPEAR IN CORE
CAUSE: blade doesn’t have proper tension for machine r.p.m and is wobbling, bond could be too hard, machine not tracking parallel to blade, etc.
SOLUTION: Blade must be reblanked
6. ARBOR HOLE OUT OF ROUND
CAUSE: Material excessively abrasive.
SOLUTION: Blade should be removed before segment loss and reblanked. If cutting is to be extensive in the same material and under the same conditions, then a special wear guard core is recommended.
7. UNDERCUTTING OF CORE BENEATH SEGMENT
CAUSE: Material excessively abrasive.
SOLUTION: Blade should be removed before segment loss and reblanked. If cutting is to be extensive in the same material and under the same conditions, then a special wear guard core is recommended.
8. CORE DISHED- BLADE LOST TENSIONING
CAUSE: Possibly bond too hard, r.p.m not proper for blade diameter, blade flanges not parallel or other machine problems.
SOLUTION: Blade can be retensioned depending upon the extent of damage.
9. MORE SEGMENT REMAINS ON ONE SIDE OF THE BLADE THAN ON THE OTHER
CAUSE: Insufficient water on worn side.
SOLUTION: check water ports to ascertain if water is flowing freely on both sides of blade. Remember, water around the blade does not mean it is being properly utilized.
