Factors Affecting The Grinding Roller Of Grinding Mill

Factors Affecting The Grinding Roller Of Grinding Mill

What are the factors that affect the quality of the grinding mill grinding roller?

Summary of contents: For grinding mills, the performance of the grinding roller directly determines the use of the mill, such as whether the machine is stable or not, the grinding effect is good or bad, the service life of the parts is long or short, so choose Good quality grinding rolls are essential for the mill. This article will briefly describe the factors affecting the quality of the grinding mill grinding rolls.

If the grinding mill wants to achieve a stable and long-lasting good grinding effect, the rigidity of the roller body, the structure of the grinding roller, the processing precision of the surface of the grinding roller and the wear resistance of the surface properties of the roller are the main influencing factors, and these factors Mutual influence, such as the high precision of the surface of the grinding roller, will show good wear resistance, which will bring stable and long-lasting good grinding effect. These factors have their own dominant factors. Their specific effects on the grinding micro-grinding mill are as follows:

1, the choice of grinding roller material

The grinding roller of the mill should select the appropriate roller material to ensure the rigidity of the grinding roller, especially the roller body and the shaft head part. The roller body is made of high quality gray cast iron, and the roller body itself is centrifugally cast. The hollow structure itself is very strong. The rigidity, so as to ensure the thickness of the hardness layer, the middle hole should not be too small, the larger the middle hole, the better the stiffness.

2. Design of the shape structure of the grinding roller

The shape design of the grinding mill grinding roller should be reasonable and scientific, mainly in the reasonable over-spinning of the shaft head step, that is, the same bearing, the bearing position size is certain, but the position between the bearing position and the roller body should be reasonably designed. The design of the outer shape of the grinding roller has an important influence on its own rigidity.

3, the processing precision of the grinding roller

The geometrical accuracy of the surface of the grinding roller of the grinding suspension roller mill is guaranteed by the machining capability. The control point is mainly in the bearing position and the crown of the roller body, followed by the control of the surface roughness, especially the shaft head part at both ends. Good fatigue wear and high rust prevention ability, even if it is not matched, the roughness should not be lower than 3.2 & mu; m, high parts such as bearing position, roughness should be higher than 0.8 & mu; m.

4, the rationality of the internal structure of the grinding roller

Under the premise of ensuring the thickness of the wear layer, the middle hole part of the grinding mill should be appropriately large and controlled between 120 and 145 mm in diameter, so as to resist large external force and reduce deformation, and the shaft head should be as The use of forged materials, good mechanical properties, and save raw materials.

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