ZX-XFS Rust and Corrosion Analyzer: A Critical Tool for Oil Quality Evaluation

Introduction

The ZX-XFS Rust and Corrosion Analyzer is a specialized instrument designed in compliance with the Chinese national standard GB/T11143-89 (Test Method for Rust-Preventing Characteristics of Inhibitor-Containing Mineral Oils in the Presence of Water). This advanced equipment is engineered to evaluate the rust-inhibiting performance of mineral oils, particularly turbine oils, when mixed with water. It is also applicable for testing hydraulic fluids, circulating oils, and other liquids denser than water. Widely utilized in petroleum refineries, power plants, and research institutions, the ZX-XFS serves as an indispensable tool for oil quality analysis and industrial compliance.

Key Features

User-Friendly Interface: Equipped with a blue LCD screen and intuitive Chinese menu navigation, the analyzer ensures straightforward operation through clearly labeled keys.

Precision Control: A microprocessor enables automated temperature regulation (±0.5°C accuracy) and programmable timing (0–100 hours), ensuring highly repeatable test conditions.

Quiet and Efficient Operation: Four independent stirring motors operate at 1,000 ±25 rpm, delivering consistent agitation without noise interference.

Compact Design: Its space-saving structure makes it ideal for laboratory and industrial environments.

Technical Specifications

Temperature Range: Ambient temperature to 100°C

Temperature Accuracy: ±0.5°C

Stirring Speed: 1,000 ±25 rpm

Test Capacity: 4 independent test chambers

Timer Range: 0–100 hours (user-configurable)

Ambient Conditions: 0–45°C temperature, ≤85% humidity

Power Supply: AC 220V/50Hz, 1,500VA

Applications
The ZX-XFS analyzer is critical for:

Assessing the anti-corrosion efficacy of turbine oils under water-contaminated conditions.

Evaluating hydraulic fluids and industrial lubricants in simulated operational environments.

Conducting R&D for oil formulations requiring enhanced rust inhibition.

Operational Workflow

Sample Preparation:

Steel Rod Polishing: Test steel rods are meticulously polished using 240-grit alumina abrasive cloth to achieve a uniform, scratch-free surface. Contamination is avoided by handling rods with tweezers or lint-free cloths.

Media Preparation: The bath is filled with a viscosity-controlled medium oil (40°C kinematic viscosity: 28.8–35.2 mm²/s).

Test Execution:

Method A (Distilled Water): 300 mL of oil sample is mixed with 30 mL distilled water at 60±1°C for 24 hours under continuous stirring.

Method B (Synthetic Seawater): Replaces distilled water with synthetic seawater, formulated per specified ionic concentrations (e.g., NaCl, MgCl₂).

Method C (Dense Liquids): Incorporates an auxiliary stirring blade to ensure homogenous mixing of water and high-density test liquids.

Post-Test Evaluation:

Steel rods are inspected under 650 lux illumination without magnification. Corrosion severity is classified as:

Mild: ≤6 rust spots (each ≤1 mm diameter).

Moderate: >6 spots but <5% surface area affected.

Severe: >5% surface area corroded.

Results are determined via duplicate testing: A "pass" requires both rods to remain corrosion-free. Discrepant outcomes necessitate retesting.

Advantages in Industry
The ZX-XFS analyzer enhances quality control by simulating real-world conditions where oil-water coexistence threatens equipment longevity. Its ability to quantify rust prevention under standardized parameters supports compliance with international oil performance benchmarks, reducing downtime and maintenance costs in critical infrastructure.Conclusion

As a cornerstone of oil analysis, the ZX-XFS Rust and Corrosion Analyzer combines precision, versatility, and reliability, making it essential for industries prioritizing equipment protection and operational efficiency. By adhering to GB/T11143-89 and accommodating diverse testing methodologies, it empowers users to deliver oils that meet rigorous anti-corrosion standards.

Note: Test reports must specify the method employed (A, B, or C) and the liquid medium (e.g., synthetic seawater in Method B). Regular calibration of steel rods and adherence to procedural guidelines ensure result accuracy.