As a kind of feeder, apron feeder has unique advantages, compared with other conveyors, it can load, can withstand larger bin pressure, and can also withstand the impact of large materials (in order to protect the equipment, a layer of material pad must be laid on the trough plate before starting the machine, so that the material can smash the material), which affects the product quality and service life. Manufacturing quality, material selection and heat treatment of key parts, etc. The following content on the apron feeder key parts of the material selection and heat treatment do some instructions.
I. Head and tail shaft material and heat treatment
The role of the head shaft is that the transmission torque of the motor and reducer is transmitted through the head shaft to the sprocket that is matched with it. The sprocket drives the chain to rotate, and the head and tail shaft are required to have certain certainty and toughness, and can withstand larger torque.
Material of drive shaft :40Cr
Heat treatment method: tempering
Hardness :HB220-250
2. Sprocket material and heat treatment
The sprocket is a driving shaft installed on the apron feeder discharging end frame, which is driven by the sprocket to rotate the corresponding chain, and the movement of the chain drives the groove plate to run along a fixed track. The sprocket is a wearing part and needs to be replaced after a certain time.
Sprocket material :ZG310-570,
Sprocket heat treatment process: tooth surface quenching treatment Depth of quenched layer: 2-2.5mm
Hardness: 44-52HRC;
Three. Groove plate quality
The groove plate should bear part of the bin pressure, but also bear the impact of large materials, and the groove plate and the material are in direct contact, apron feeder operation for a certain time, will cause deformation and wear of the groove plate, requiring the groove plate to have greater toughness and wear resistance.
Groove material: 16Mn
Processing method: double circular arc, cold pressing
Treatment method: high-frequency quenching of the surface of both sides of the support plate
Surface hardness: HRC 40 ~ 45
Four; Roller material and heat treatment
There are two types of heavy duty apron feeder rollers
Support wheel: mainly composed of roller, support, shaft, rolling bearing (long roller for sliding bearing) and other parts. One is to support the normal operation of the chain, and the other is to support the groove plate to prevent plastic deformation caused by the impact of the material.
Supporting sprocket: supports the return chain to prevent excessive deflection, affecting the normal operation of the chain.
Bearing roller and chain material: made of alloy steel
Heat treatment process: quenching treatment HRC45-50, high surface hardness, wear resistance, easy to replace.
For a medium-sized apron feeder roller
The roller has a supporting seat and the groove plate is fixed, and the roller rolls on the track to drive the groove plate and the material movement on the groove plate.
Roller body material: 45# high quality carbon steel
Heat treatment method: surface high frequency quenching
Surface hardness: HRC45-50