Sizing and straightening process of welded steel pipe

Abstract

The invention discloses a sizing and straightening process of a welded steel pipe. A sizing and straightening device formed by three four-roller assemblies is adopted for carrying out the sizing and straightening process, the three four-roller assemblies are all four-roller adjustable high-rigidity racks, the steel pipe sequentially passes through the three four-roller assemblies for reducing, anda hole of each four-roller assembly carries out set reducing on the steel pipe. The three four-roller assemblies are mounted on an integral sizing base in succession, the axes of the holes of the three four-roller assemblies arranged along a straight line, and after being assembled into a whole offline, each four-roller assembly is mounted into the sizing base and locked. In the circumferential direction, the positions of roller seams of every two adjacent four-roller assemblies are staggered. The four-roller assembly at the middle position can be adjusted in the horizontal direction and thevertical direction so as to straighten the steel pipe online. Online sizing and online straightening of the welded steel pipe can be combined into one through only three four-roller adjustable high-rigidity racks.

Description

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AI Technical Summary

Benefits of technology

In this patented method for reducing variations caused by cutting or other processes during manufacturing of pipes used for transportation purposes it suggests that only one part needs to be reduced while still maintaining good quality standards. By doing this, less material may be needed than traditional methods like deburrers or calibration tools, resulting in improved efficiency and cost savings compared with current techniques such as machining.

Problems solved by technology

This technical problem addressed in this patents relates to improving the efficiency and quality of producing smaller sizes of weather resistant steels without requiring frequent replacements during maintenance periods. Existing methods require multiple steps involving different tools, leading to increased costs due to downtimes caused by equipment failure. Additionally, current methods have limitations in achieving precise dimensions over time because they rely heavily upon manual labor work.

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