Inspection System
Quality Control & Inspection
Ensuring precision and reliability in every aluminum casting. From raw material verification to final shipment release, Bohua applies full-process quality control for dimensional accuracy, internal soundness, and repeatable production performance.
Material verification
Incoming alloy materials and melt chemistry are checked before production begins, reducing variation at the source.
In-process discipline
Key casting and machining parameters are monitored during production to keep dimensions, density, and repeatability stable.
Final release control
Finished parts are inspected against drawing, appearance, and customer-specific requirements before shipment approval.
Quality Philosophy
Quality is built into the process, not inspected in at the end
Bohua operates under an ISO-based quality management system with inspection checkpoints across incoming material control, melting, casting, machining, and final release. The goal is simple: stable quality, traceable results, and fewer surprises for overseas buyers.
For aluminum casting programs, controlling only the finished part is not enough. We focus on the full route — alloy chemistry, melt condition, process stability, dimensional verification, internal defect detection, and customer-specific acceptance criteria.
X-Ray Inspection
X光探伤机
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.
What it checks
CMM – Coordinate Measuring Machine
三坐标测量机
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.
What it checks
3D Scanner
3D扫描仪
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.
What it checks
Spectrometer
光谱分析仪
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.
What it checks
Tensile Testing Machine
拉力试验机
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.
What it checks
Metallographic Microscope
金相显微镜
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.
What it checks
Density Balance
密度天平
The density balance is used to assess density-related quality and to support process control for aluminum melts and samples. It helps us evaluate compactness and consistency in relation to porosity and internal soundness. This is a practical control method during production and validation stages. Used together with other inspection tools, it strengthens confidence in casting integrity.
What it checks
Hydrogen Analyzer
测氢仪
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.
What it checks
Surface Roughness Tester
粗糙度仪
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.
What it checks
Salt Spray Testing Machine
盐雾试验机
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.
What it checks
Process Control Flow
From material input to shipment release
Our inspection workflow is designed to catch risk early, verify process stability during production, and confirm finished parts before delivery.
Step 01
Incoming material inspection
Verify raw material certificates, alloy composition, and incoming quality before production release.
Step 02
Melt and process control
Control hydrogen level, chemistry, temperature, and key production parameters during melting and casting.
Step 03
In-process dimensional and visual checks
Monitor critical dimensions, appearance, and process stability during casting, machining, and finishing.
Step 04
Final inspection and shipment release
Confirm dimensional accuracy, internal quality, mechanical performance, and customer-specific requirements before packing.
Standards & Documentation
Certified processes. Flexible customer requirements.
ISO 9001:2015 quality management
Bohua follows a documented quality management system with controlled processes, traceability, inspection records, and continuous improvement discipline.
Automotive-style quality support
For suitable programs, we can work to customer-specific quality requirements including PPAP, FMEA, SPC, control plans, dimensional reports, and other serial-production documentation.
Full-process quality mindset
Quality is not treated as a final sorting activity. It starts from incoming materials and continues through casting, machining, inspection, packing, and shipment release.
Quality capability snapshot
Quality Control FAQ
What inspection equipment does Bohua use for aluminum castings?
Bohua uses X-ray inspection, CMM, 3D scanning, spectrometer, tensile testing, metallographic microscope, density balance, hydrogen analyzer, surface roughness tester, and salt spray testing equipment to verify internal quality, dimensions, chemistry, mechanical properties, and corrosion performance.
Can Bohua support customer-specific quality requirements?
Yes. Bohua can align inspection and documentation with customer requirements, including dimensional reports, PPAP-style submissions, FMEA, SPC, control plans, and application-specific quality checkpoints depending on project scope.
How does Bohua control quality during production?
Quality control starts with incoming material verification, continues through melt and process control, and ends with final dimensional, visual, internal, and customer-specific inspection before shipment release.
Need a quality report before sourcing?
Tell us your drawing, acceptance criteria, or industry standard. We can discuss inspection plans, documentation scope, and project-specific quality requirements.