Unilateral wear of the wire
CAUSE |
REMEDY |
Not pretwisted enough |
Twist at least once anti-clockwise |
Too much tension on the wire |
Reduce down feed |
Distance too short between driving pulley and material |
Increase distance |
Pulleys are inclined, the wire is stopped from rotating by flanks of the pulley |
Correct alignment of pulleys with wire or guide line |
Wire breaks at the connection
CAUSE |
REMEDY |
Too much tension on the wire |
Reduce down feed |
Edges too sharp |
Break the edges and install deflection pulleys |
Too much wear at the connection |
Increase water supply |
Wrap radius too tight |
Install deflection pulleys |
Wrong connection technique |
Check press and pressing tool |
Wire breaks behind the connection
CAUSE |
REMEDY |
Too much tension on the wire. |
Reduce down feed. |
Wrap radius too tight. |
Install pulleys. |
Edges too sharp. |
Break the edges and install pulleys. |
Wire connection too long. |
Install crimp-type repair connection. |
Too much vibration on the traction wire. |
Check wire for constant diameter and reduce down feed. |
Wire vibrates strongly
CAUSE |
REMEDY |
Tension of the wire too low. |
Increase down feed. |
Edges too sharp. |
Break the edges. |
Different diameters on the wire, wire connections too thick. |
Check wire for constant diameter, check connections. |
Not enough deflection pulleys. |
Install more deflection pulleys. |
Cut is not straight
CAUSE |
REMEDY |
Not enough deflection pulleys |
Install more deflection pulleys with guide line and spirit-level. |
Wire tension too low |
Increase down feed or tension. |
Deflection pulleys are not fixed or correctly aligned when replaced during cutting |
Pay attention to precise alignment and fixing of the deflection pulleys when replacing. |
Wire beads are pushed together
CAUSE |
REMEDY |
Not enough water, leading to heating up. |
Supply more water or install more water nozzles with direction into the cut. Do not let water spray from bottom to top. |
Sliding of the wire on the driving pulley, leading to heating up. |
Increase wire tension. |
Cutting speed too low
CAUSE |
REMEDY |
Wire tension too low |
Increase down feed. |
Wrapping sections in the material too long |
Install more deflection pulleys. |
Wire polishes. |
Reduce water supply. |
Number of revolutions too high. |
Reduce number of revolutions. |
Wire polishes
CAUSE |
REMEDY |
Too much water supply. |
Reduce water supply. |
Wire tension too low. |
Increase down feed. |
Number of revolutions too high. |
Reduce number of revolutions. |
Excessive wear of the wire
CAUSE |
REMEDY |
Not enough water supply. |
Increase water supply or install more water nozzles in the cut. |
Number of revolutions too low. |
Increase number of revolutions. |
Rotating or running direction of the wire mixed up. |
Pay attention to the direction of rotation of the wire. |