Sub-Critical Stress-Relief Annealing (280°C to 300°C) for Brass Bodies
Metallurgical guide on thermal stress-relief annealing (280°C) for extruded brass cylinder bodies to eliminate residual stresses and seasonal cracking.
materials-finishes
Materials & Surface Treatments
材料与表面处理工艺
Solid extruded H59/H62 brass metallurgy, Zamak zinc alloy comparisons, PVD coatings, Satin Nickel, Matte Black, and ASTM B117 salt spray ratings.
Autocatalytic Ni-PTFE Composite Coating on Brass Lock Core Rotors
Technical analysis of Ni-PTFE composite electroless plating, delivering 0.08 dry friction and 450 HV hardness for unlubricated cleanroom locks.
High-Phosphorus Chemical Nickel Barrier Layers for Sour Gas Refineries
Engineering guide on high-phosphorus (10%-12% P) chemical nickel plating for lock cylinders exposed to H2S hydrogen sulfide gas.
Triple-Layer Galvanic Plating (Cu-Ni-Cr) on Extruded Architectural Brass
Technical breakdown of triple-layer galvanic plating (Copper + Nickel + Hard Chrome) on solid brass cylinders for coastal luxury villas.
PVD Titanium Carbonitride (TiCN) vs Titanium Aluminum Nitride Coatings
Comparative analysis of TiCN (Charcoal Grey) and TiAlN (Dark Bronze) PVD ceramic coatings, evaluating oxidation thresholds and hardness.
Satin Nickel Electroplating (US15 / BHMA 619) Finishing Protocols
Process guide on Satin Nickel (US15 / BHMA 619) architectural lock finishes, detailing semi-bright nickel leveling and directional satin wheeling.
Cathodic E-Coating in Matte Black (RAL 9005) with 3H Surface Hardness
Technical specifications for cathodic electro-deposition (E-coat) in Matte Black (RAL 9005), guaranteeing 100% sharp-edge corrosion coverage.
Austenitic SUS304 vs SUS316 Stainless Steel Pin Chambers in Salt Fog
Metallurgical comparison of SUS304 and SUS316 stainless steel lock components under ASTM B117 neutral salt spray testing.
Extruded Architectural Brass CW617N: Free-Machining Lead Globules
Metallurgical analysis of CW617N extruded architectural brass, evaluating microscopic lead globule dispersion and pin broaching chip breaking.
Lead-Free Eco Brass CW724R (CuZn21Si3P): Silicon Hardness & Carbide Wear
Engineering breakdown of CW724R silicon-phosphorus lead-free brass, detailing carbide cutter wear and compliance with RoHS/REACH.
CuNi18Zn20 Commercial Nickel-Silver Key Blanks (720 MPa Yield Strength)
Technical analysis of 18% nickel-silver key blank alloys (CuNi18Zn20), evaluating bitting notch retention and flexural torsional strength.
CuSn6 Phosphor Bronze Compression Springs in 500k Cycle Commercial Locks
Engineering guide on CuSn6 phosphor bronze compression springs, analyzing elastic modulus and 500,000-cycle fatigue endurance in lock chambers.
Request Quote & Technical Drawings for Materials & Surface Treatments
Direct factory engineering support for 材料与表面处理工艺. Custom cam offsets, finishes, and master key hierarchies supported.