1, the advantage

1) can reduce the consumption of raw materials, turning the traditional way of comparison, precision cold rolling process allows material savings rate increased by 10% to 15% or more;

2) can be a complex surface of the forming process, increase labor productivity;

3) can improve the mechanical properties of parts, cold rolling deformation, the metal's grain structure is more dense materials, metal flow lines unchanged, there is no cutting, increased fatigue strength of materials;

4) cold rolling to reduce material consumption and reduce processing time, reduce production costs.

2, the inadequacies

1) abrasive grinding processing using high cost and difficulty;

2) process control difficult, more difficult to use;

3) ring prone to the phenomenon of micro-cracks;

4) The shape of the error is relatively large (the larger the size the greater the error), large deformation effects due to subsequent grinding efficiency;

5) require a higher quality of rough: rough to be a cold rolling with a certain degree of accuracy, the rough weight of not more than 0.5% error, blank uniform hardness, without obvious cracks and decarburization, etc.

Cold rolling process is a small, no cutting of the new technology, due to precision cold rolling to maximize the accuracy of the work piece shape and the shape is close to finished parts and precision, and can significantly improve the intrinsic quality of the work piece, the world committed to the development of cold-rolling technology, research, and practical application in mass production.



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