Corrosion of Metal Components in Jack Support Blocks
Metal components in jack support blocks, such as reinforcing plates, inserts, or fasteners, are critical for structural integrity and load-bearing performance. Corrosion can compromise safety, reduce service life, and lead to equipment failure.
1. Causes of Metal Corrosion
Moisture Exposure: Prolonged contact with water, humidity, or condensation accelerates rust formation.
Chemical Attack: Exposure to acids, salts, oils, or cleaning solvents can corrode metals.
Poor Coating or Surface Protection: Inadequate paint, plating, or protective layers increase susceptibility to oxidation.
Environmental Conditions: High humidity, coastal areas, or industrial atmospheres with corrosive gases enhance metal degradation.
2. Effects of Corrosion
Reduced Strength: Rust weakens metal components, compromising load-bearing capacity.
Structural Deformation: Corrosion can cause pitting or uneven surfaces, affecting block alignment and stability.
Accelerated Rubber Degradation: Corroded metal may abrade or chemically interact with adjacent rubber components.
Safety Risks: Weakened or compromised blocks increase the likelihood of slippage, collapse, or failure during lifting.
3. Preventive Measures
Material Selection: Use corrosion-resistant metals such as stainless steel or treated alloys for structural parts.
Protective Coatings: Apply anti-rust coatings, galvanization, or paint to exposed metal surfaces.
Environmental Control: Store blocks in dry, shaded areas and avoid prolonged exposure to moisture or corrosive agents.
Regular Inspection: Periodically check metal components for signs of rust, pitting, or coating deterioration.
Maintenance: Clean and dry blocks after use, and apply rust inhibitors or protective sprays if necessary.
4. Conclusion
Corrosion of metal components in jack support blocks poses risks to stability, strength, and safety. Selecting corrosion-resistant materials, applying protective coatings, controlling environmental exposure, and performing regular inspections are essential to prolong service life and ensure safe operation.
References
Fontana, M. G. Corrosion Engineering. McGraw-Hill, 2005.
ASTM G1 – Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens.
Callister, W. D. Materials Science and Engineering: An Introduction. Wiley, 2018.
ISO 9223 – Corrosion of Metals and Alloys – Corrosivity of Atmospheres – Classification, Determination and Estimation.
ASTM D610 – Standard Practice for Evaluating Degree of Rusting on Painted Steel Surfaces.
