Case Annealing

Advanced Annealing System
Continuous Motion Annealing
The OTM-70A employs continuous motion technology to deliver seamless, uniform heating via an annealing coil, outperforming traditional batch methods by providing consistent temperature control across the brass surface—critical for relieving work-hardening stresses from deep drawing and ensuring optimal ductility without oxidation or uneven softening. This induction-based process, often performed multiple times in factory settings, enhances brass integrity for subsequent operations like tapering or bullet seating, reducing defects and improving overall cartridge reliability in high-volume ammunition production.

• Process: Continuous feed through annealing coil for targeted heating of necks, bodies, or full casings in brass annealing
• Outcome: Restored ductility, extended case life, and minimized cracks for superior ammo performance
• Control: Weintek HMI and Allen Bradley PLC for precise temperature monitoring and adjustments

Integrated Post-Process Inspection
Achieve unparalleled quality assurance with the OTM-70A’s built-in inspection system, which automatically detects defects, verifies annealing effectiveness, and ensures compliance with stringent ammunition standards—eliminating manual checks and reducing reject rates. This feature integrates seamlessly with the annealing workflow, using vision or eddy current methods to confirm uniform heat treatment, making it ideal for precision manufacturing where consistency is paramount.

• Mechanism: Automated defect detection and annealing verification post-heating for reliable brass processing
• Benefit: Near-zero defects, faster throughput, and reduced labor in ammo case annealing
• Applications: Inspection of annealed cups, tubes, and casings across rifle calibers for defect-free outputs

Robust, Production-Ready Design
Built for demanding environments, the OTM-70A includes magnetic door interlocks, complete guarding with 3/8″ polycarbonate windows, and anti-static systems to ensure operator safety and machine longevity during continuous operation. With a compact footprint and durable construction, this USA-made annealing machine supports low-maintenance, high-uptime performance in ammunition facilities, protecting against environmental hazards while maintaining precision heat treatment.

• Components: Annealing coil, anti-static systems, magnetic safety gates for secure brass annealing
• Benefit: Enhanced safety, reduced downtime, and robust reliability in high-volume production
• Environment: IP65-rated electronics and sealed guarding for clean, efficient ammo manufacturing

Product Feeding
Every OTM-70A comes standard with the OTM-240A right-hand feeder, versatile for drawn tubes, finished casings, and brass cups, featuring quick-swap tooling and anti-static design for seamless caliber changeovers. This efficient system minimizes operator intervention, supports high-speed loading, and integrates flawlessly with the annealing process—ensuring smooth, uninterrupted workflows without compromising precision or quality in ammunition brass heat treatment.