Snag grinding in foundry/forge finishing: Which operations qualify as typical examples?

Introduction / Context:
Snag grinding is a rough, off-hand grinding process used in foundries and forges to remove excess metal quickly: risers, sprues, parting lines, and flash. It improves handling safety and prepares parts for subsequent machining or inspection.

Given Data / Assumptions:

• Portable grinders or swing-frame machines with coarse, hard wheels.
• Cast or forged components with gate/flash remnants.
• Emphasis on stock removal, not precision finish.

Concept / Approach:
All listed operations target removal of casting/forging extras. The wheel is selected for aggressive cutting and durability under intermittent contact and variable geometry.

Step-by-Step Solution:

Verification / Alternative check:
Foundry process plans list snagging as an early finishing step prior to shot blasting and machining.

Why Other Options Are Wrong:
Each single option is correct, therefore the comprehensive answer is “all of these.” “None” is invalid.

Common Pitfalls:
Expecting fine tolerances from snagging; it is a coarse, high-removal operation and may leave significant surface roughness.

Final Answer:
all of these