The importance of non-destructive testing of seamless pipes

In the production process of seamless steel pipes, flaw detection of seamless steel pipes plays an important role, not only to detect whether the seamless steel pipes have quality defects, but also to test the appearance, size and material of the steel pipes. By applying a single non-destructive testing technology, only a part of the defects in the seamless steel pipe can be detected, and the parameters such as the material and the appearance size of the seamless steel pipe need to be measured manually, so the single non-destructive testing technology cannot be well achieved. In order to solve the requirement of quality supervision of seamless steel pipes, it is necessary to combine the application of non-destructive testing technology to conduct a comprehensive inspection of the quality, material and appearance size of seamless steel pipes.

The main purpose of non-destructive testing is to provide real-time process quality control of raw materials, semi-finished products, finished products and product components for discontinuous processing (such as multi-process production) or continuous processing (such as automated production lines), especially to control the metallurgical quality of product materials And the quality of the production process, such as defect status, organizational status, coating thickness monitoring, etc., at the same time, the quality information learned through testing can be fed back to the design and process department to further improve the design and manufacturing process to improve product quality. Receive the reduction of scrap and rework, thereby reducing manufacturing costs and improving production efficiency.

It can be seen that non-destructive testing technology is used in the production and manufacturing process to detect various defects in the original and processing processes in time and control them accordingly, so as to prevent raw materials and semi-finished products that do not meet the quality requirements from flowing into the next process and avoid futile efforts. The resulting waste of man-hours, manpower, raw materials, and energy also drives improvements in design and process, ie, avoids "insufficient quality" in the final product.

On the other hand, the use of non-destructive testing technology can also control the quality level of materials and products within the range suitable for the performance requirements according to the acceptance criteria, so as to avoid the so-called "quality excess" caused by the unlimited improvement of quality requirements. Using non-destructive testing technology, the location of the defect can also be determined through inspection, and some defective materials or semi-finished products can be used without affecting the design performance. For example, the defect is within the machining allowance, or local grinding or repair is allowed. Or adjust the processing technology so that the defect is located in the part to be removed by processing, etc., so as to improve the utilization rate of materials and obtain good economic benefits.

Therefore, non-destructive testing technology plays an important role in reducing manufacturing costs, improving material utilization, improving production efficiency, and making products meet both performance requirements (quality level) and economic benefits.