Background & Rationale
Since the original Ma'anshan facility commissioning in 2008, Sureay Machinery has operated under a constrained floor footprint of 10,000 m². The structural limitation reached critical threshold in Q3 2023, when incoming OEM order volume exceeded single-shift throughput capacity by 23%. A systematic capacity audit — conducted jointly by our operations and metallurgical engineering teams — identified three bottleneck nodes: raw stock pre-treatment staging, 5-axis CNC queue depth, and post-heat-treatment CMM throughput.
Phase III expansion was ratified by executive management in November 2023, with groundbreaking commencing January 2024. The investment targets a net increase of 5,000 m² of temperature-controlled precision manufacturing space, directly adjacent to the existing CNC grid.
CAPACITY PROJECTION: Phase III commissioning is forecast to increase annual blade output by 40%, from 18,000 units/year to 25,200 units/year at full operational load.
Phase III Infrastructure
The new wing incorporates six Mazak VARIAXIS i-800 5-axis machining centers, each rated for ±0.002 mm positional repeatability under continuous-duty thermal load. Coolant management has been upgraded to a closed-loop chiller system maintaining ±0.5°C spindle temperature stability — a critical variable for maintaining dimensional consistency across long-run blade batches.
Two additional Ipsen TITAN N vacuum heat treatment furnaces have been installed, expanding heat cycle capacity by 60%. Each furnace chamber accommodates batch loads up to 800 kg, enabling simultaneous processing of full production runs for high-volume OEM orders without queue interruption.
Metrology Expansion
A Hexagon Global Silver CMM with 3.0 m × 2.5 m measurement volume has been added to the quality bay, supplementing the existing Renishaw system. Both units are now networked to a centralized metrology database, providing real-time dimensional trend analysis and automated non-conformance flagging for every production batch.
Production Capacity Metrics
OPERATIONAL DATA — CNC spindle utilization: Previous 71% → Phase III target 85%. Heat treatment throughput: Previous 1,200 kg/week → Phase III 1,920 kg/week. CMM inspection throughput: Previous 340 parts/day → Phase III 520 parts/day.
The expanded CNC grid enables parallel scheduling across product families — shredder blade runs can now proceed concurrently with log saw blade batches without resource contention. This architectural separation of machine types by product vertical minimizes setup changeover time and preserves dedicated tooling inventories per product line.
Quality Protocol Integration
Phase III operations are governed under the existing ISO 9001:2015 QMS framework, with scope extension formally filed with our SGS certification body in August 2024. All Phase III equipment has been incorporated into the calibration and preventive maintenance schedule, with baseline capability studies (Cpk ≥ 1.67) completed on all new machining centers prior to production release.
Material traceability has been extended to full heat lot-level tracking across the new furnace units, ensuring end-to-end documentation from incoming steel certification to outbound dimensional report — maintaining unchanged protocol integrity from the legacy facility.
Deployment Timeline
Civil construction completed on schedule in June 2024. Equipment installation and utility commissioning ran July–September 2024. Production qualification runs commenced October 2024, with full commercial capacity release scheduled for Q1 2025. All current OEM delivery commitments are maintained through the legacy facility during the transition window.