Countermeasures for Tip Loss, Cracking, and Base Material Damage

8) Tip Loss

Symptom

Causes

1. Excessive stress on the blade caused by twisting, side loading, or curved cutting.
2. Blade tip caught on reinforcing steel while cutting a concrete slab.
3. Abnormal blade overheating due to insufficient cooling water reduces the strength of a brazed joint.

Corrective Actions and Preventive Measures

1. Avoid excessive side loading or curved cutting that places undue stress on the blade.
2. Use a blade with the required final cutting width from the start of the operation.
3. Ensure an adequate supply of cooling water at all times.

9) Tip Cracking

Symptom

Causes

1. The tip experienced fatigue failure due to excessive vibration.
2. Thermal shock was applied to the tip as a result of excessive heat generation.

Corrective Actions and Preventive Measures

1. Prevent abnormal vibration during operation.
2. Prevent excessive heat generation.

10) Blade Core Cracking

Symptom

Causes

1. Cracking in the slotted section of the blade core caused by undue stress resulting from:
   • Excessively high-powered machine used or undue feed pressure applied.
   • Improper installation causes blade to wobble.
   • Angled cutting
   • Curved cutting
   • Twisting of the blade.
2. Insufficient cooling water caused abnormal overheating of the blade core.

Corrective Actions and Preventive Measures

1. Ensure adequate cooling water to prevent blade core overheating.

_{Courtesy of Noritake Super Abrasive Co., Ltd.}