Product Name:
High-Purity Corundum (Alumina) Ceramic Piston
Product Material:
95% - 99.7% High-Purity Corundum/Alumina ($Al_2O_3$). (Optional: Toughened Alumina for enhanced impact resistance).
Material Characteristics:
Extreme hardness (Mohs 9), Exceptional wear resistance for long-term precision, High compressive strength, Chemically inert to strong acids and alkalis, Low thermal expansion for dimensional stability, Excellent biocompatibility, Mirror-like surface finish (Ra < 0.1μm).
Application Fields:
High-pressure cleaning pumps, Chemical metering pumps, Medical precision filling machines, Water-jet cutting systems, Homogenizers, Oilfield injection pumps, Laboratory liquid chromatography.
Application Industries:
Biomedical (Sterile liquid filling), Advanced Machinery (Heavy-duty plungers), New Energy (Slurry handling), Fluid Control (Micro-dosing), Electronic Engineering (Chemical mechanical polishing), Aerospace (Hydraulic systems), Petrochemical (Corrosive fluid pumping), Broad Semiconductor (Etching chemical delivery).
Processing Difficulties:
Achieving micron-level dimensional and geometric tolerances (circularity, cylindricity), Eliminating surface micro-cracks during high-speed grinding, Controlling sintering shrinkage to ensure uniform density, Maintaining consistent mirror polish across large surface areas.
Processing Flow:
Raw material ball milling → Granulation → Cold isostatic pressing (CIP) → Pre-machining → Ultra-high temperature sintering → Precision diamond cylindrical grinding → Mirror polishing → Ultrasonic cleaning → CMM & Roughness testing → Packaging.
Delivery Period:
Standard specifications: 20-35 days, Customized high-precision pistons: 40-55 days.
This Corundum Ceramic Piston is engineered for the most demanding fluid handling applications where metal components quickly degrade. Utilizing 99.7% high-purity alumina, these pistons offer a surface hardness that is second only to diamond, ensuring minimal wear even when pumping abrasive slurries or high-pressure liquids. The precision-polished surface significantly reduces friction with seals, extending the maintenance cycle of your entire pump system. Highly resistant to thermal shock and chemical attack, our corundum pistons provide a reliable, contamination-free solution for pharmaceutical, chemical, and food processing industries.
Key Features
Diamond-Like Hardness: Provides unrivaled wear resistance, maintaining critical tolerances over millions of cycles.
Corrosion Immunity: Will not rust or degrade when exposed to aggressive chemicals or salt spray.
Superior Surface Finish: Mirror-polished to Ra 0.1μm or better, reducing seal friction and energy consumption.
Contamination-Free: Chemically stable and non-toxic, ideal for pharmaceutical and food-grade applications.
Thermal Stability: Maintains structural integrity and precise fitment under high-temperature operating conditions.
