Product Name:
Precision Alumina Ceramic Piston Rod
Product Material:
95% - 99.8% High-Purity Alumina ($Al_2O_3$), optional Ceramic-to-Metal assembly with stainless steel adapters
Material Characteristics:
Extreme surface hardness (Vickers hardness up to 1500-1800 HV), Outstanding wear resistance, High compressive strength, Excellent electrical insulation, Chemically inert to most industrial acids and organic solvents, Minimal thermal expansion, High-precision mirror finish (Ra < 0.1μm)
Application Fields:
Metering pump plungers, High-pressure water cleaners, Chemical injection pumps, Medical dosing systems, Food and beverage filling equipment, Laboratory liquid handling, Linear actuator rods
Application Industries:
Biomedical (Sterile liquid delivery), Advanced Machinery (Precision plungers), New Energy (Lithium battery slurry handling), Fluid Control (Micro-metering), Electronic Engineering (Chemical supply lines), Aerospace (Instrumentation components), Petrochemical (Corrosive fluid injection), Broad Semiconductor (CMP equipment)
Processing Difficulties:
Controlling the cylindricity and straightness over long-aspect-ratio rods, Minimizing surface micro-cracks during diamond grinding to ensure high-pressure sealing, Achieving sub-micron dimensional tolerances, Maintaining uniform surface roughness across the entire functional length
Processing Flow:
Raw material ball milling → Granulation → Cold Isostatic Pressing (CIP) or Ceramic Extrusion → High-temperature sintering → Diamond precision grinding → Mirror polishing and honing → Ultrasonic cleaning → Dimensional and surface roughness inspection → Secure packaging
Delivery Period:
Standard specifications: 15-25 days, Customized high-precision or extra-long rods: 30-45 days
The Alumina Ceramic Piston Rod is an industry-standard solution for demanding fluid control and mechanical transmission systems. Engineered from 99.7% high-purity Alumina, these rods provide a hard, non-reactive surface that outperforms traditional chrome-plated or stainless steel rods in both longevity and performance. The ceramic material eliminates common issues such as surface scratching, oxidation, and chemical corrosion, significantly extending the life of seals and packing. With a mirror-polished finish and exceptional dimensional stability, our alumina rods ensure consistent, leak-free operation in pharmaceutical, chemical, and high-pressure cleaning applications.
Key Features
Diamond-Grade Hardness: Offers superior resistance to abrasive particles, preventing surface scarring and maintaining seal integrity.
Corrosion Immunity: Completely resistant to oxidation and chemical attack, ensuring contamination-free fluid handling.
Minimal Seal Friction: Mirror-polished surfaces (Ra < 0.1μm) reduce heat generation and frictional wear on seals and gaskets.
High Dielectric Strength: Provides excellent electrical insulation for applications involving sensitive electronic components or high-voltage environments.
Cost-Effective Durability: Delivers an optimal balance of high performance and low maintenance costs compared to other advanced ceramics.
