How long can the zirconia ball be kept?

The service life of Zirconia Balls (that is, the time when they can still be used normally after being placed) is closely related to their use scenario, environmental conditions and maintenance methods, as follows:

First, the life under normal use scenarios
Conventional grinding environment
In common grinding scenarios (such as ink, paint processing), zirconia balls (such as yttrium stabilized) usually have a service life of several months to more than half a year. Its high hardness and wear resistance make it able to withstand continuous impact, but surface wear or fragmentation may occur after long-term use.

Influence of special conditions

High temperature/pressure environments: Life is significantly shortened, possibly to a few months.
Strong acid/alkali media: yttrium stabilized (95% ZrO₂) is still more tolerant, but long-term exposure to highly corrosive substances such as hydrofluoric acid can lead to deterioration.
Hard material grinding: ball wear is accelerated, and regular ball repair is required.
2. Suggestions for storage when not in use
Storage condition

Dry and avoid light: Avoid moisture or high temperature environment resulting in zirconia balls water absorption or performance changes.
Sealed packaging: to prevent dust, oil and other pollutants attached, affecting the subsequent use effect.
Shelf life
If unopened and stored in good conditions, the shelf life of zirconia balls is usually 1-2 years. However, the specific need to refer to the product manual, some high-purity products may be marked longer.

Three, the key measures to extend life
Pre-treatment: Pre-grinding for 30 minutes before initial use to eliminate surface impurities.
Regular maintenance:
Check the ball wear every 3-6 months, and replace it when the broken ball rate exceeds 10%.
Clean in time after use to avoid accelerated aging of solvent residues.
Matching parameters: Select the appropriate ball diameter according to the particle size of the material and the grinding target (such as 1.5mm is the commonly recommended value).
Sum up
The "placement time" of zirconia balls needs to distinguish between used and unused states:

Not used: Properly stored for 1-2 years, but pay attention to moisture and pollution prevention.
Used: the life under conventional working conditions is about several months to half a year, and the replacement cycle needs to be shortened in special environments. You are advised to make a maintenance plan based on the specific application scenario and the manufacturer's guidance.