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      The drum shell is made of high-quality steel that meets national standards, with reliable chemical composition and mechanical properties. It undergoes shot blasting pretreatment before welding. The hub castings are subjected to non-destructive testing using magnetic particle or ultrasonic methods. For small-diameter drums, a single-side welding double-sided forming process is employed. All circumferential and longitudinal welds use carbon dioxide gas shielded welding and undergo non-destructive testing to eliminate welding stresses. The drum shaft is a high-quality forged part, which undergoes strict non-destructive testing and provides a test report. Its allowable torque and allowable reaction force meet design requirements. Under maximum load, the shaft deflection is controlled within the allowed range. The drum can be connected to the shaft via key connection, thermal expansion fit, or expanding sleeve connection, offering convenient assembly/disassembly and stable power transmission.

      The product features high overall strength, good rigidity, firm welding, smooth operation, safety, and durability. It can operate continuously for a long time under heavy-load harsh conditions with low failure rate, long service life, and low maintenance cost.

FAQ

Q: What are the requirements for the drum shell material?

A: It uses steel that meets national standards, with qualified chemical composition and mechanical properties. It undergoes shot blasting pretreatment before welding.

Q: How is the quality of the hub ensured?

A: The hub castings must undergo non-destructive testing with magnetic particle or ultrasonic methods to ensure no cracks, pores, shrinkage cavities, or other defects.

Q: How is the weld quality guaranteed?

A: All welds use carbon dioxide gas shielded welding. Critical welds undergo non-destructive testing, and welding stresses are eliminated to ensure no cracking or deformation.

Q: What material is the drum shaft made of?

A: The shaft is machined from a forging. It must undergo non-destructive testing and provide a test report, with strength and toughness superior to ordinary round steel.

Q: Will the shaft deform under heavy load?

A: Under maximum load conditions, the shaft deflection is strictly controlled within the design-allowed range and will not affect normal operation.

Q: What connection methods are available between the drum and the shaft?

A: Depending on requirements, key connection, thermal expansion connection, or expanding sleeve (power lock) connection can be selected, offering convenient assembly/disassembly and stable power transmission.