Solid Rocket Motor Casing

The large-diameter cylindrical body, combined with a convergent-divergent nozzle structure at the tail, forms the core pressure-bearing component of the solid propulsion system. The front end features grid-like reinforcing ribs and connection flanges for stage separation or load transmission. Multiple positioning marks and sensor mounting interfaces are located on the cylinder surface to meet attitude monitoring and telemetry requirements during flight.

This component must withstand extreme combustion chamber pressures and thermal shocks, imposing strict requirements on weld penetration depth, airtightness, and overall coaxiality. The manufacturing process involves thick-wall rolling, automatic longitudinal and circumferential seam welding, and heat treatment for stress relief. Precision machining is performed on the nozzle throat area to ensure thrust vector control accuracy, guaranteeing structural integrity under high-temperature and high-pressure conditions.

Supported by an ISO 9001 certified quality management system, our factory is equipped with specialized machinery such as CNC spinning machines, gantry machining centers, and vacuum electron beam welders. We possess full-process development capabilities for large-scale composite and metal casings. Production integrates X-ray imaging inspection and automatic hydrostatic testing systems to non-destructively verify internal weld defects and pressure resistance, providing one-stop supporting services from process review to batch delivery.