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Seamless steel pipe production and the need for tracking inspection of each finished product

Seamless steel pipe production and the need for tracking inspection of each finished product

Time:2022-03-17 Source:China Wuxi JiaNuo Special Steel Co.

———————————————————————————————————————————Steel industry is a high energy consumption, capital-intensive industry, which provides raw materials for various sectors of the national economy, is an important industrial sector in China. With the development of the national economy, steel materials gradually to high, fine, light, thin, durable direction, the strength of developing countries also continue to strengthen, steel production increased year by year. 2012 China exported 548 million tons of steel, ranking first in the world, 16.35% higher than the second place in the European Union; 2012 China imported 142 million tons of steel, ranking sixth in the world. China is a veritable steel power, the import and export volume is among the top in the world. Although China’s steel exports are large, but most of them are ordinary steel with less added value, for some high-quality steel still need to be imported from abroad. In the face of increasingly fierce international competition, we are sitting on abundant resources but do not produce high quality products, relying on low resource costs to obtain profits of the status quo is facing challenges, how to improve the quality of steel pipe has become increasingly important.


1.1.1 The basic situation of seamless steel pipe

Steel pipe is an important steel product, accounting for about 10% of the total steel. Steel pipe has a hollow section, suitable for use as a fluid transport pipeline, and compared with the same quality of figure steel, the section coefficient is large, bending and knob strength, widely used in machinery and building structures. Steel pipes can be divided into two categories according to the different production methods: welded pipes are made by bending flat sheets and welding them, while seamless steel pipes are formed by accumulating molten steel through annular slits and then by stretching and other treatment processes. Compared to welded pipe, seamless steel pipe is costly and complicated to manufacture, but seamless steel pipe has no welding seam, reliability and variety adaptability. The proportion of seamless steel pipe in steel pipe is about 42%-45%, which is widely used in aerospace, oil exploration, nuclear power, boilers, shipbuilding, addresses, etc. Because of the special nature of its application, the quality requirements of seamless steel pipe are higher than those of general welded pipe.

1.1.2 The necessity of steel pipe per tracking

Seamless steel pipe as an important steel, the consumption in the domestic consumption to maintain a fast growth rate, the export volume is also rising year by year, but we look at the following set of figures:

From January to August 2012, China exported 3.422 million tons of seamless pipes, of which the varieties with larger export volume are oil and gas road seamless pipes, oil and gas drilling seamless pipes and boiler pipes, with average unit prices of USD 1047.51/ton, USD 1368.87/ton and USD 2545.89/ton.

From January to August 2012, China imported a total of 150,800 tons of seamless pipes, of which the largest imports were oil and gas drilling seamless pipes. Boiler tubes, accounting for 36.54% and 26.05% of the total imports respectively, at an average unit price of USD 3,361.43/ton and USD 6,815.86/ton.

From the same steel pipe trade balance comparison can be learned that the quality of our production of steel pipe and imported steel pipe there are large differences, it is because of the difference in quality, bringing us huge economic losses, for some high-quality special applications of seamless steel pipe, we still need to import from developed countries. In order to change this situation, the standardized management of domestic enterprises, the continuous improvement of the quality of steel pipe, the establishment of a sound quality assurance system is the problem that enterprises have to face. In order to achieve this goal, many steel enterprises have adopted some advanced management methods, such as manufacturing resource planning, enterprise resource planning, product data management, computer integrated manufacturing systems, etc., and these systems are all graves in the data collection and processing of information. Information management system. As a manufacturing enterprise, production is the foundation of the enterprise, production data can truly reflect the production status of the enterprise, real-time tracking of the production situation is the key to achieve enterprise information management.

For the seamless steel pipes exported to foreign countries, especially the oil casing exported to the United States, the oil casing standard (API SPEC 5CT ) issued by the American Petroleum Institute must be followed, requiring the steel pipe to meet the general rule of traceability in the production process. Detailed description as follows: 1. For the requirement to test by furnace number or lot number and confirm that it meets the specification requirements for acceptance, the manufacturer should develop and follow a set of procedures to maintain the furnace number or lot number identification system; 2. The serial number should be marked on the product in accordance with the following provisions: Before the purchaser receives the material, it is the responsibility of the manufacturer to maintain its identification, each pipe number should be unique so that the experimental data can correspond with each pipe. The current domestic steel pipe production line, Tomben are based on programmable logic controller ((Programmable LogicController, referred to as PLC) and manual intervention to achieve by furnace or batch tracking. Due to problems such as reworking or off-line problems in the production process of steel pipes, it is difficult to achieve the tracking of each production process due to the chaotic production order of steel pipes.

From the above analysis, it is clear that a complete per-pipe tracking system is necessary for both the economic situation and the mandatory standards set by the American Petroleum Institute. Through the steel pipe per tracking to achieve real-time tracking and quality monitoring of each steel pipe production process, improve the management efficiency of the production site, to achieve the production line and enterprise information. Information integration to meet the increasing market competition needs.

1.1.3 The significance of industrial Internet of things technology for each steel pipe tracking

With the continuous development of the Internet of things technology, it has been from the laboratory stage to the practical application, in the industrial field, social field and the environment has been widely used, such as airport security, national smart grid, smart earth and other platforms have a relatively complete system structure. Industrial Internet of things is the application of Internet of things technology in the industrial field, which is a comprehensive application of knowledge in many fields such as automation, computer, communication and management. The steel pipe per tracking system is a complex system containing the identification of each steel pipe at the bottom, data collection, network connection of equipment, data transfer, data processing, etc., which requires a collection of multi-domain knowledge. Industrial Internet of Things provides technical support to build this complex system and realize the information interaction between single equipment in workshop and enterprise information management platform, thus meeting the requirements of steel pipe per tracking.

*** Translated with (free version) ***