How to process the elongation of stainless steel wire rope? [answered]

In the industrial field, stainless steel wire rope is widely used, and its use also determines the performance requirements of stainless steel wire rope. Therefore, in the processing of stainless steel wire rope, its production process needs special attention, in which the elongation processing is an important part. Next, Xiaobian will introduce it to you.

The structural elongation of stainless steel wire rope is mainly formed in the twisting process, which belongs to the inherent property. It exists in the matrix of stainless steel wire rope. It is bound to show the phenomenon of elongation in use, which is mainly affected by its own structure and the distribution of twisting stress.

1. The stress and deformation generated in the process of twisting stainless steel wire rope make its steel wire or strand not completely in the pre-designed position. If subjected to repeated load, there will be relative displacement between the steel wire or strand, and some or even all of them will return to the pre-designed position to produce permanent elongation.

2. Under the condition of stress, in order to achieve the stability corresponding to the loaded load, the steel wire in each strand will move relatively in order to adjust its position, resulting in two forms of elongation. When it bears the load for the first time, the steel wire will be rearranged slightly to produce a permanent elongation, that is, structural elongation; At the same time, it also produces a recoverable elongation, that is, elastic elongation.

If this phenomenon occurs, it will cause harm. The general treatment measure is pre tensioning, which is also the most effective way to reduce structural elongation. It can not only improve the product performance of stainless steel wire rope, but also improve the service life of stainless steel wire rope to a certain extent. Generally, the structural elongation is 0.7-1.0%, and the structural elongation after pre tensioning is generally 0.1-0.7%, which can meet the service requirements of aerial ropeway and suspension bridge, improve the performance of stainless steel wire rope and improve the service life of stainless steel wire rope.

It can be seen that the elongation treatment of stainless steel wire rope is very necessary. Senyuan believes that during the processing of stainless steel wire rope, we must pay attention to each process and link, and strictly control the harm caused by the structural elongation of steel wire rope. Senyuan will further study the pre tensioning treatment process.