Improper storage causes failure and disintegration of the cutting disc

One manufacturer's cutting discs suffered multiple breakdowns and disintegrations during use. When using this hand-held rotating machinery, considering that the rotation speed of the disc exceeds 12,000 rpm, if this happens, it can cause serious injuries to the operator and anyone nearby. Initially, it was suspected that this was a manufacturing fault affecting a batch of these discs.

However, further investigation revealed that the failure of the Cutting disc was due to improper storage conditions. This was done after a discussion with the CD manufacturer. Once notified of the problem, the manufacturer promptly investigated the disc failure and determined that the most likely way of storing the disc was the root cause of the problem. The following are excerpts from their report:

At times the grinding disc has been in wet conditions. When bond abrasive is wet this often causes the resin, which acts as a very important adhesive in the composition of the grinding disc, to break down. Bond abrasive should always be stored in dry, frost-free conditions, avoiding substantial changes in temperature, humidity and moisture. It should always be properly protected and supported to prevent damage and warping.

It should be noted that there is no evidence of any fault with the disc provided by the manufacturer. It is likely that the way CDs are stored is the root cause of the problem.

Action: Members are encouraged to review all storage methods for cut and ground discs to avoid any similar situations and in particular ensure that such storage avoids substantial changes in temperature, humidity and moisture.

In the rainy season, many manufacturers will worry about the moisture of the goods in the warehouse, and grinding wheels are no exception. Many factories store grinding wheels improperly and become damp. If the weather is hot, it is not conducive to storing the grinding wheel, which can easily cause moisture and rust of the grinding wheel.

How do the grinding wheels in the warehouse respond to rainy days?

1. Storage requirements

Different types of grinding wheels require higher storage conditions. Wheel pieces with larger diameter or thickness should be placed vertically or slightly inclined.

2. Dust and easy cleaning

Many warehouses do not pay attention to the orderly storage of goods. It is also easy to get wet on rainy days. Sealed storage is needed. Optimal conditions of vacuum packaging, insulation and contact with air.

3. Anti-mildew and anti-corrosion protection

In rainy days, the grinding wheel will become loose when exposed to water in the air for a long time. We need to put a Desiccant on the grinding wheel to absorb moisture in the air and prevent rust. Floor waterproofing.

4. Moisture insulation:

On rainy days, place the goods on a tray and place it well. If it is economical, it is also recommended to use ground moisture-proof treatment to isolate moisture.

5. Pay attention to ventilation

Ventilation settings should also pay attention to weather changes and choose sunny days. Put some lime appropriately in the warehouse, add some fans, etc.

Conclusions

In order to improve the work efficiency of the factory, the company will seal and solidify the warehouse to prevent moisture, which is also the maintenance of the grinding wheel.