During the use of gray cast iron components, rust and corrosion prevention are critical; due to the material's high carbon content, its surface reacts readily with moisture and oxygen, leading to rust formation. Consequently, when the equipment is out of service or in storage for extended periods, anti-rust oil or protective coatings are typically applied to the surface to mitigate environmental degradation.
During routine operation and maintenance, care should be taken to avoid subjecting the cast iron components to severe impacts or excessive transient loads. Gray cast iron possesses relatively low impact resistance; localized stress concentrations can easily lead to cracking or even structural failure. Therefore, maintaining a steady load during operation is essential, as is the periodic inspection of critical load-bearing areas for cracks or signs of loosening.
For gray cast iron parts involved in moving assemblies-such as guideways and machine tool beds-regular lubrication and cleaning are required. Keeping contact surfaces clean minimizes abrasive wear, while proper lubrication significantly reduces the coefficient of friction, thereby extending service life and maintaining operational precision.
Maintenance procedures must also account for the effects of temperature fluctuations. Gray cast iron is sensitive to thermal stress, and frequent cycling between hot and cold temperatures can induce internal stress variations. Accordingly, when operating in high- or low-temperature environments, rapid temperature changes should be avoided, and regular inspections should be conducted to detect potential structural damage at an early stage.