Quick Answer

Most coating problems are prep problems in disguise. Expect 200-500 m2 per day on a push grinder, then follow with a 30/46 metal-bond cleanup pass to profile the slab for the new coating layer. Strip industrial paint and sealing layers with PCD diamond tooling, not metal-bonded matrix.

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About Why PCD, Not Metal Bond

Key factors in coating work.

A metal-bond disc tries to abrade through sealing layer, but the resin softens and loads the segment.

This is the step that decides whether the coating lasts.

Typical Production Rates

What causes it.

Getting prep wrong here shows up later as peeling or delamination.

Two-Pass Process

The details that matter.

Browse concrete abrading discs category for PCD and metal-bond sets.

• PCD pass: strip the coating layer. Expect shavings and chips.
• Metal-bond cleanup: 30/46 grit stage like our R3 round-segment shoes to strip residue and open the concrete.
• Industrial vacuum thoroughly. Any residual film will interfere with the new coating layer.

Most coating warranties start and end with the surface profile.

Frequently Asked Questions

Q: Is it possible to chemical strip instead?

A: For most jobs, For small rooms, yes. For a 500 m2 plant floor, abrading is faster and avoids chemical disposal.

Q: Does pcd damage the concrete?

A: In short, No. PCD removes the coating layer, not the concrete. It leaves a light scratch mark that metal-bonded matrix cleans up.

Q: How do I know when to switch to metal bond?

A: The practical answer is, When you see uniform gray concrete instead of coating layer color.

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Conclusion

Do the prep thoroughly and the coating system performs as designed. Reach out to JOY TECH for PCD discs sized to your grinder.