The possible reasons for low cleaning efficiency in a steel pipe shot blasting machine are:

Worn-out blast wheel blades: The blast wheel is a critical component that generates the blasting force. If the blades are worn-out, it can lead to a decrease in cleaning efficiency.

Insufficient abrasive material: The abrasive material is the medium used to clean the surface of the steel pipes. If there is not enough abrasive material, it can affect the cleaning effectiveness.

Incorrect abrasive flow rate: Both too low or too high abrasive flow rates can result in decreased cleaning efficiency.

Incorrect blast wheel speed: The blast wheel speed needs to be adjusted according to the specific requirements. If the speed is incorrect, it can affect the cleaning efficiency.

To address these potential causes, you can take the following troubleshooting steps:

Replace the worn-out blast wheel blades: Check the condition of the blast wheel blades and replace them with new ones if necessary.

Ensure sufficient abrasive material: Inspect the abrasive supply system and ensure an adequate supply of abrasive material. Replenish the abrasive material as needed.

Adjust the abrasive flow rate: Adjust the abrasive flow rate based on the equipment specifications and requirements, ensuring it falls within the correct range.

Adjust the blast wheel speed: Adjust the blast wheel speed according to the equipment specifications and requirements, ensuring it is within the correct range.