How are ceramic cutting inserts mounted? Because of brittleness and thermal-shock sensitivity, ceramic tool tips are usually attached to the tool body by which method?

Introduction / Context:
Ceramic cutting tools (e.g., alumina-based, SiAlON) offer high hot hardness and chemical stability but are relatively brittle. Their mounting method must avoid thermal damage and allow economical indexing or replacement.

Given Data / Assumptions:

• Indexable insert tooling is used.
• Operation involves elevated temperatures and intermittent cuts may occur.
• Desire for easy insert indexing and replacement.

Concept / Approach:
Mechanical clamping (often with a top clamp and a locating pocket) secures ceramic inserts without subjecting them to the thermal cycles and residual stresses associated with brazing or soldering. This also enables quick indexing of multi-corner inserts.

Step-by-Step Solution:

Verification / Alternative check:
Modern toolholder systems (ISO turning holders) are designed around clamped, indexable inserts with chipbreakers and seating geometries.

Why Other Options Are Wrong:
Brazing or soldering can crack or weaken ceramic tips; welding is inapplicable. Adhesives cannot withstand cutting loads and temperatures.

Common Pitfalls:
Using excessive clamping force or poor pocket support can fracture ceramics; proper torque and seating cleanliness are critical.

Final Answer:

Clamping