Dirak Lock System Accessories and Lock Cylinders Metal Casting Supply
Locking systems in industrial enclosures require rugged, corrosion-resistant components. Precision metal casting provides consistent mechanical properties and fine detail replication for lock accessories and cylinders.
This case showcases how die casting and post-machining support the production of high-precision cam locks, swing handles, and quarter-turn latches.
Lock Cylinder Casting for Dimensional Accuracy and Strength
Lock components must meet tight tolerances to ensure reliable actuation and secure engagement. Zinc-based alloys such as Zamak 5 and Zamak 2 are commonly used for their excellent casting performance and mechanical strength.
Typical casting characteristics:
Tolerance class: ISO 8062 CT6 (±0.05 mm)
Wall thickness: 1.5–2.5 mm
Tensile strength: 280–310 MPa (Zamak 5)
Elongation at break: 7%
Hardness: 82–85 HRB
Zinc alloys provide the ductility and toughness needed for rotating components in locking mechanisms. Learn more about zinc die casting processes used in mechanical system parts.
Tooling Design for Insert and Feature Complexity
Tooling for lock systems involves multiple cavity designs with lifters, sliders, and collapsible cores to accommodate key slots, cam notches, and spring retainers. Molds are engineered for:
Cycle time optimization: ≤30 seconds
Surface finish targets: Ra 0.8–1.2 µm
Mold steel: H13 with nitriding for >100,000 shot life
Ejection system with air blasts and stripper plates
Our tool and die making process supports consistent dimensional control for small, high-tolerance components.
Post-Machining for Functional Interfaces
Casting alone cannot achieve all functional specifications, especially for mating components. Post-machining is critical for:
Key slot cutting (±0.02 mm)
Cam groove profiling
Tapping M3–M6 internal threads
Reaming bearing surfaces to H7 fit
These operations ensure smooth turning, proper cam alignment, and long-term wear resistance. Discover how post-machining services enhance part readiness for assembly.
Corrosion Protection and Aesthetic Finishing
Industrial lock components are frequently exposed to weathering, vibration, and abrasive contact. Surface finishing methods include:
Electroplating: nickel or chrome for durability and appearance
Powder coating: for black or gray finish, >1,000-hour salt spray resistance
Passivation for parts requiring electrical continuity
Finishes conform to ISO 9227, ASTM B117, and DIN 50021 corrosion standards.
Batch Production and Quality Assurance
Components are produced in batches ranging from 5,000 to 100,000 pieces per design, supported by:
Automated vision inspection for profile and hole position
CMM-based dimension verification
Salt spray testing (weekly sample batch)
RoHS/REACH-compliant material certification
Our mass production solutions ensure stable output with traceable quality control.
FAQs
What dimensional tolerances are standard for die cast lock components?
Which zinc alloys are best suited for rotating or threaded lock features?
What surface coatings are recommended for corrosion resistance in outdoor enclosures?
How are cam grooves and key slots processed after casting?
What batch sizes are ideal for lock accessory mass production?
