As one of the main components of the sintering trolley, the fence of the trolley is also a vulnerable part. During operation, there are many reasons for the different degrees of deformation of the trolley baffle. Serious deformation will cause cracks, which will reduce the quality of products produced by the sintering machine, and the tightness of the production process will deteriorate, which will affect the normal production of products.

 

 

1. The impact of sintering process

During the sintering process, as the material burns from top to bottom, the temperature distribution in the vertical direction of the trolley fence is very uneven, and the temperature difference is large, resulting in complex alternating thermal stress. In this way, fatigue cracking occurs in the fence of the trolley, and the time is prolonged and the cracks expand, which will cause fatigue fracture.

 

2. The impact when the trolley is reversed

At the head and tail of the sintering machine, the Karen of the trolley meshes with the toothed plate of the star gear, so that the trajectory of the trolley changes from a straight line to a curve. When the trolley is turned up and down, a certain inertial impact will be generated, which will cause the crack of the fence to further expand.

 

3. The impact of metal content on the trolley fence

Nodular cast iron fences with a spheroidization rate that does not meet the standard have low strength and low elongation, and are prone to cracks under the action of external forces.

 

4. The impact of casting

There are obvious defects in the casting, such as slag inclusion, trachoma, pores, etc., and the cracks are mainly generated at the defect location

 

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