High-strength steel tube processing process

Abstract

The invention provides a high-strength steel tube processing process. The processing process comprises the following steps: firstly cleaning and inspecting blank, pre-heating the blank which is inspected to be qualified without quality problems, aligning the blank to cut off after heating, heating the treated blank, performing thermal centering work after heating, perforating after thermal centering, performing hot-rolling work after punching, cutting off the head and the tail of a steel tube after hot-rolling, re-heating the steel tube with head and tail cut, descaling with high-pressure water after heating, performing tension diameter-reducing work after descaling, carburizing quenching after tension diameter-reducing, air-cooling after carburizing quenching, cutting off the head and the tail of the steel tube after cooling, straightening the steel tube after cutting off, performing flaw detection after steel tube straightening, and performing surface treatment on a qualified product. The high-strength steel tube processing process has the beneficial effect of improving strength of the steel tube.

Description

technical field [0001] The invention belongs to the field of steel pipes, and in particular relates to a high-strength steel pipe processing technology. Background technique [0002] With the development of science and technology, the types and strength of steel pipes are also increasing. Whether it is seamless steel pipes or welded steel pipes, considerable strength needs to be improved. At the same time, there is a large demand for the output of steel pipes, but the current process methods cannot guarantee high The rapid production of high-strength steel pipes, such as traditional seamless steel pipes using cold rolling process, can increase production, but the later pickling, phosphating and saponification processes will waste a lot of materials and energy, and hot rolling process may cause The delamination phenomenon leads to performance degradation. At the same time, uneven cooling will also generate residual stress. The control of processing accuracy is also reduced, a...

AI Technical Summary

Problems solved by technology

[0002] With the development of science and technology, the types and strength of steel pipes are also increasing. Whether it is seamless steel pipes or welded steel pipes, considerable strength needs to be improved. At the same time, there is a large demand for the output of steel pipes, but the current process methods cannot guarantee high The rapid production of high-strength steel pipes, such as traditional seamless steel pipes using cold rolling process, can increase production, but the later pickling, phosphating and saponification processes will waste a lot of materials and energy, and hot rolling process may cause Delamination phenomenon leads to performance degradation. At the same time, uneven cooling will generate residual stress. The control of processing accuracy is also reduced, and the strength will be difficult to control, which affects the strength requirements required for steel pipe forming.