Page 68 - ITAtube Journal 2/2019

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SMS group GmbH
ChangBao orders world’s most advanced seamless tube plant from SMS group
The ChangBao and SMS group project teams during contract signing ceremony.
Jiangsu ChangBao Precision Steel Tube Co., Ltd based in Chang- zhou in Jiangsu Province, China, has awarded SMS group (www. sms-group.com) the contract to supply a new, state-of-the-art PQF® (Premium Quality Finishing) seamless tube plant and related automation. Particular highlights of the scope of supply include various performance modules and a KR I 35/45 CNC groove dress- ing machine. This highly auto- mated plant will enable ChangBao to meet the growing demand for precise, high-strength tubes on the local market.
The PQF® ordered will be used to produce tubes within a diameter range of up to 6 5/8 inches and wall thicknesses of between 4 and 20 millimeters. Its annual capac- ity is 300,000 tons of tubes. These are used in oil and gas production (OCTG tubes) and must satisfy very high quality and tolerance require- ments in accordance with API standards.
With the BCO-type PQF® plant (Bilateral Change-Over), the stands are changed at both sides of the mill. The compact, easily accessible construction enhances the user-friendliness of the plant. The drive is simpler in design and is easier to service. In addition, the hydraulic capsules (hydraulic adjustment) are positively con- nected to the mill frame. This ensures the rolling forces are dis- tributed symmetrically over the mill, resulting in a further signif- icant improvement in wall thick- ness variations. This increases both the ef ciency and exibility of the mill.
The order also includes the full automation of the machinery and plant sections, as well as state- of-the-art laser technology for measuring the wall thicknesses downstream of the PQF® and the stretch reducing mill (SRM). What’s more, the CaliView® meas- uring system developed by SMS group allows for fast, inline cali- bration of all rolling mills, and so guarantees the perfect alignment of the mill line over a period of time. A networked, CNC-based groove dressing machine (KR) for high-precision machining of the SRM stands will also be supplied.
The use of LASUS® technology means the otherwise commonly applied radioactive isotope measuring technique can be replaced by a safe laser technol- ogy, which is extremely environ- mentally friendly to operate and ensures monitor control with the PQF®-SecControl-Technology® as
well as front and tail end sharp- ening in real time with the FTS system.
Any yield losses are minimized using the latest modules in the CARTANEO technology system. The well-known functions CEC (Crop End Control for reducing thick ends), WTCA (Wall Thick- ness Control, Average), and WTCL (Wall Thickness Control, Local) have been signi cantly improved thanks to self-learning algorithms (Arti cial Intelligence, or AI).
With this investment ChangBao is banking on ultra-modern, highly stable tube production. The lower material stress allows the product range to be extended to include even thinner-walled dimensions and higher-alloy steel grades. The high level of digitalization of all equipment was what convinced the customer to be well equipped for the future.
The new seamless tube plant is scheduled to be commissioned in the rst quarter of 2020.
ITAtube Journal No2/May 2019
68