supply roller

The rubber-coated roller is an important part and component of the belt conveyor system. The rubber-coated roller can effectively improve the operation of the conveyor system, protect the metal roller from wear, prevent the conveyor belt from slipping, and enable the roller and the belt to operate synchronously, thereby ensuring that the belt The rubber coating of the efficient and large-capacity running drum can also effectively prevent the sliding friction between the drum and the belt, reduce the material adhesion on the drum surface, thereby reducing the deviation and wear of the belt. It is widely used in steel, metallurgy, coal, cement and power generation. Fertilizer, grain depot, port and other industries.
_ Rubberized roller technology is divided into two categories. Traditional rubber lagging such as hot vulcanized rubber lagging technology mainly vulcanizes the rubber and the roller through a vulcanization tank to ensure the bonding strength between the rubberized panel and the roller. The second type is cold vulcanization coating technology, which uses a special cold vulcanization method to directly bond the roller and the rubber coating panel. It can be used for on-site coating and underground coating. Its technology is relatively advanced and also greatly reduces labor costs.
Manufacturing process
Folding_ Generally, the main shaft of the drum can be divided into the following two types according to the load condition
) The mandrel only bears bending moment, such as the axis of the redirected drum group< br/> ) The rotating shaft bears both bending moment and torque, such as the shaft of the transmission roller group
The material of the shaft is generally rolled or forged carbon steel or alloy steel, the usual material is medium carbon steel, forty No. 5 steel is the most commonly used. For shafts with large forces and limited size, as well as shafts with certain special requirements, alloy steel can be used. The selected material is 40 chromium. According to needs, the shaft generally needs to undergo heat treatment or surface strengthening treatment. In order to improve its mechanical properties and wear resistance, under normal temperatures, the elastic modulus of alloy steel and carbon steel are very different, so the stiffness of the shaft cannot be improved by using alloy steel
The material of the shaft is generally subject to Quenching and tempering treatment, for the transmission roller group, when the shaft strength index does not meet the requirements, you can also choose to combine the quenching and tempering treatment, and check it according to the symmetrical cyclic bending allowable stress
The technical requirements for drum skin design are
) When the drum is curled, it must follow the rolling direction of the steel plate
) The offset amount at the joint shall not be greater than millimeters
) The longitudinal weld after the drum is rubberized must be inspected by ultrasonic or radiographic flaw detection
① Ultrasonic flaw detection is carried out, and the weld reaches the second level of the standard
② If the radiographic flaw detection starts from one end to detect the total length, the weld reaches the national standard level 2. If the unqualified flaw detection length is doubled, and the length is still unqualified after doubling, the full length will be carried out. Long-term flaw detection until the requirements are met
) The roundness tolerance of the roller skin after being rolled should not exceed When the outer diameter of the hub is larger than that, cast steel is used. For light roller sets, when the outer diameter of the hub is smaller than that, hot-rolled round steel is used, which should comply with national standards