I. Differences in manufacturing processes

Cast steel pulley

The casting process is adopted: molten steel is directly poured into the mold (sand mold, metal mold, etc.), and after cooling and solidification, an integral structure of the pulley blank is formed. Subsequently, the final size is achieved through machining (such as turning, drilling).

Core features: One-time molding, no weld seams throughout, and the internal structure is determined by the casting solidification process.

Ring forged welded pulley

The combined process of forging and welding is adopted

First, the key components of the pulley such as the rim and hub are fabricated through forging (such as ring rolling) (the metal structure of the forged parts is dense and the mechanical properties are better).

Then, each forging is joined into a whole by welding (such as submerged arc welding, gas shielded welding), and finally machined.

components are forged and then welded, with weld seams remaining. The overall structure is composed of multiple forged steel parts.

Ii. Differences in Applicable Scenarios

Cast steel pulley

Applicable scenarios: Medium and small loads, cost-sensitive occasions, such as light cranes, manual hoists, general conveying equipment, etc.

Advantages: The casting process is simple, the cost is relatively low during mass production, and it is suitable for pulleys with complex shapes but not extreme forces.

Ring forged welded pulley

Applicable scenarios: Occasions with heavy loads, high strength and high reliability requirements, such as large cranes, port machinery, metallurgical equipment, etc.

Advantages: It can withstand greater impact loads and alternating stresses, is more durable under long-term heavy-load working conditions, and has higher safety.