Problems faced by turning processing rolls

1, heavy quality, heavy duty cutting difficulties. Need to turn the processing of rolls are generally very large in size, the quality is also very heavy, compared with ordinary cutting, with a large depth of cut, cutting speed is relatively low, feed speed is relatively slow, etc., so its machining process and ordinary mechanical cutting process is very different, these process characteristics exist in the machine tool rigidity, stability of the performance of the machine tool to reduce the selection of tooling, tooling, tooling, installation, the choice of cutting dosage As well as the workpiece clamping and other aspects; in particular, the most difficult to process high hardness heavy parts.


2, large size, long processing time. Most of the rolls need to be turned are large in size, and the processing time for a single piece is long, and the tool is prone to wear out before it gets to the head, resulting in rework, frequent tool changes and other impacts on processing efficiency.
3, high hardness after material increase, cutting difficulty increases. In order to improve the hardness, wear resistance and thermal strength of the roll, to prevent cracks in the roll, in the roll production process will also be added to molybdenum, manganese, chromium and other elements, so that it forms a layer of alloy on the surface of the roll to extend the service life of the roll, which also increases the cutting difficulty of the roll to a certain extent.
4, defects are difficult to avoid, complex processing conditions. Part of the need for turning rolls there are sand, pores, hard points and other defects, processing conditions are complex, resulting in tool chipping, and even the phenomenon of knife.

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