Fluid Machinery – Compressor

Compressor housings are core pressure-bearing castings for fluid machinery and directly affect compressor air tightness and operating stability. As the domestic fluid equipment industry upgrades, OEMs continue to tighten requirements for the parting surface quality, flow channel finish, and batch consistency of housing castings. Traditional manual grinding produces large quality fluctuations and can hardly meet mass-production supporting requirements.

Compressor housings are produced through sand casting, featuring complex cavity structures and uneven wall thickness distribution. Castings are prone to shrinkage and expansion deformation after cooling and forming, resulting in differences in the contour of individual pieces. Flashes, burrs, and oxide scale remain on parting surfaces, flange faces, and flow channel inlets. Traditional fixed fixtures can only be positioned according to theoretical dimensions and cannot compensate for casting deformation deviations, making problems such as under-grinding of flange faces and localized over-grinding prone to occur. Manual cleaning of internal cavity burrs is difficult, and the rework rate is relatively high.

To address the grinding pain points of housing castings, Quanyu Industry has developed an automated grinding solution based on 3D vision deviation correction technology. The equipment scans and captures the actual contour of each housing casting in real time, uses algorithms to calculate shrinkage and expansion deformation and automatically compensate for it, resolves the problem of inaccurate positioning caused by casting deformation, and dynamically generates a grinding trajectory adapted to each individual workpiece, precisely removing flashes and burrs from flanges, parting surfaces, and flow channel edges.

After the equipment was put into application, the customer's compressor housing casting grinding batch consistency improved significantly, and the rework defect rate dropped sharply. Automated grinding replaces high-intensity manual positions, improving production cycle time and reducing labor costs and dust-related operational risks. The product stably meets the assembly standards of fluid machinery OEMs, helping the customer improve quality and efficiency and enhance competitiveness in the fluid equipment casting market.

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