What causes curbstones to have damaged edges after demolding?

What causes curbstones to have damaged edges after demolding?

Curbstone edge damage after demoulding can be associated with concrete consistency, product geometry, compaction, machine settings, release conditions, mould wear or a combination of production factors. Repeated damage should therefore be reviewed with the complete production conditions instead of assuming that the mould is the only cause.

Record where and when the damage appears

Photograph the affected face or corner and identify the corresponding location on the product drawing. Record whether the damage is present immediately after release or becomes visible during later handling. Note whether it repeats in the same cavity or position and whether it began after a product, material or tooling change. These observations help define the issue before corrective work is considered.

Keep a distinction between a consistently repeated mark and irregular breakage. The pattern can be useful information for a technical review, but photographs alone should not be treated as a confirmed diagnosis.

Prepare information for the review

Provide the curbstone section, machine model, current mould information, production settings already recorded by the operator and relevant material or handling changes. Inspection of tooling should follow the site's isolation procedure and be performed by qualified personnel. Do not attempt to compensate for an unidentified cause by making unconfirmed changes to the mould or operating settings. Use the collected information to agree which part of the process needs checking first.

Related mould information

See Curbstone Molds for the relevant mould range and drawing requirements.