What is the best material for crane wheels?


I. Crane Wheels: The Core Load-Bearing Units of Heavy-Duty Equipment
II. Deciding Factors in Material Selection
High Strength: Resistance to wheel-rail contact stress
High Toughness: Absorption of impact loads
Wear Resistance: Extension of service life
III. Comparison: Forging vs. Casting vs. Other Materials
1. Cast Wheels
Common Materials: Cast steel (ZG), ductile iron (QT).
Drawbacks: Casting processes inevitably produce internal defects such as pores, shrinkage cavities, and inclusions. This leads to significantly lower overall mechanical properties (especially toughness and fatigue resistance) compared to forged parts. In heavy-load, impact-intensive, or high-cycle scenarios, their safety risks and service life are limited. Typically used in light-load, low-requirement applications.
2. Other Materials (e.g., 普通结构钢 /ordinary structural steel)
Their strength and toughness generally cannot simultaneously meet the extreme requirements of crane wheels, with comprehensive performance significantly inferior to specialized forged steel.
IV. Choosing Excellence: Baoxin’s Commitment to Forged Crane Wheels
Premium Materials: Using high-quality alloy structural steels (e.g., 65Mn, 42CrMo) to ensure excellent baseline performance.
Core Processes: Strict adherence to advanced forging processes (die forging/free forging), complemented by precise heat treatment (quenching + tempering) to fully unleash material potential and ensure the perfect unity of high strength, high toughness, and high hardness.
Meticulous Craftsmanship: Precision machining ensures dimensional accuracy and operational smoothness; rigorous non-destructive testing (ultrasonic, magnetic particle inspection, etc.) guarantees zero defects in internal and surface quality.
Customization Capability: Customizable specifications (diameter, rim height, tread width), load classes (A6~A8), and special requirements (e.g., high-temperature resistance, corrosion-resistant coatings).
Quality Validation: Products meet or exceed domestic and international standards (e.g., DIN, FEM, JB/T).
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