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NINGBO HOWSHUN INNOVATED MANUFACTURE CO., LTD.

SWEECC H2.160

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Transmission Housing

Product Category: Equipment and accessories

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Product Introduction

This transmission housing is designed for high-speed railway applications. Made from DIN GS-20Mn5 cast steel, the component weighs approximately 260 kg and features a large, complex geometry. It is produced using an investment shell casting process, providing improved surface quality and finer structural details compared with conventional sand casting. Its large size creates significant challenges in shell strength, metal filling, solidification shrinkage, distortion, and the prevention of porosity and shrinkage defects. Precision machining is equally demanding. Multiple flanges, bearing bores, and mounting holes are located in different orientations, requiring accurate datum establishment and carefully controlled multi-stage setups. Critical tolerances such as coaxiality, positional accuracy, and perpendicularity between machined features must be maintained throughout production. The weight of the casting and residual casting stresses can also cause deformation during machining. HSKC

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International Trade Fair for Construction Machinery, Building Material Machines, Mining Machines and Construction Vehicles

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