Sand Casting

We first confirm how the component will be used, assembled, sealed, supported, and inspected. Critical bores, interfaces, minimum wall sections, pressure boundaries, and material-property requirements are separated from non-critical geometry so that process controls are applied where failure would matter most.

We evaluate wall-thickness transitions, isolated heavy sections, draft, fillets, core geometry, parting direction, feeding access, and areas that may trap gas or restrict metal flow. Where a design increases shrinkage, misrun, distortion, or cleaning risk, we propose a practical change or explain the process control required to retain the geometry.

Material grade, casting size, surface expectation, dimensional requirement, core complexity, quantity, and tooling strategy are interdependent. We therefore compare green sand and resin sand after reviewing the drawing instead of selecting a moulding method from part weight alone.

Machining allowance is assigned to the surfaces that require it, not added uniformly without reference to the datum strategy. We review clamping access, locating surfaces, bore relationships, sealing faces, and inspection datums so that the rough casting supports stable finishing operations.

Before production release, we confirm the applicable drawing revision, material specification, heat-treatment condition, dimensional checks, surface acceptance, required non-destructive testing, sampling plan, traceability, and documentation. This reduces disputes caused by undefined or mismatched acceptance criteria.