Quality Control & Inspection

Real-time radiographic inspection helps us see what the eye cannot. It is used to detect internal porosity, shrinkage cavities, inclusions, and hidden discontinuities inside aluminum castings. This is especially important for structural parts, pressure-tight housings, and components with critical wall sections. X-ray inspection gives buyers stronger confidence in internal integrity before machining or shipment.

The CMM verifies critical dimensions in three-dimensional space with high precision. It is used for datum validation, hole positions, flatness, profile checks, and detailed dimensional reports. For tighter-tolerance parts, CMM inspection supports first article approval and ongoing process verification. It is a core tool for automotive and industrial programs that require measurable traceability.

A 3D scanner captures the full surface geometry of a casting quickly and visually. It is valuable for comparing actual parts to CAD models, identifying shape deviations, and evaluating complex contours that are harder to inspect with point-by-point methods alone. This helps speed up sample validation and problem analysis. It is especially useful for larger or more complex aluminum castings.

The spectrometer confirms whether the alloy chemistry is within the required specification before and during melting. It measures elemental composition rapidly, helping control silicon, magnesium, copper, iron, and other key elements. This protects downstream mechanical performance and casting consistency. For export OEM work, chemistry verification is a basic but essential control point.

Mechanical testing verifies whether the casting and heat-treatment condition can achieve the required strength and ductility. The tensile testing machine measures performance using standardized test specimens. It helps confirm whether the process is delivering the expected material behavior for structural applications. This is important for projects where reliability matters more than appearance alone.

Metallographic analysis lets us examine the internal microstructure of aluminum samples after sectioning and preparation. It helps evaluate grain condition, eutectic structure, porosity distribution, and process-related metallurgical quality. When process optimization or failure analysis is needed, this tool provides deeper technical evidence. It supports both routine validation and root-cause investigation.

Bohua has its own pressure-tightness testing workshop. Test method, medium, pressure, duration and acceptance criteria are defined according to customer drawings and project requirements.

Hydrogen content in molten aluminum directly affects the risk of gas porosity. The hydrogen analyzer helps us check melt condition before pouring so corrective actions can be taken early. Lower hydrogen means better internal quality and more stable downstream results. This is a key process control point for improving casting soundness.

Surface finish matters for sealing faces, machined areas, appearance-critical parts, and coating performance. The roughness tester measures surface texture objectively rather than relying on visual judgment alone. It supports machining verification and helps ensure the part meets drawing or customer requirements. This is especially relevant where assembly, sealing, or post-treatment is involved.

Salt spray testing evaluates corrosion resistance under accelerated conditions. It is used when a casting requires protective coating validation or long-term environmental durability assessment. For automotive and outdoor industrial parts, this helps verify whether the chosen finishing route is suitable. It gives buyers a clearer basis for approving coating and corrosion-performance expectations.