TPT March 2008

T echnology U pdate

At the outlet of the piercing mill, a new station carries out antioxidant powder blowing in the bore of the shell. The shell is then quickly transported to the FQM rolling line and inserted into the rolling line shell; a mandrel circulating system will be fitted to cool and lubricate the mandrel (with graphite). Tube rolling is undertaken on a new Danieli Centro Tube FQM, equipped with 5 three-roll adjustable type-stands (individually driven). The FQM has 5 stands in order to roll long tubes with thin wall thicknesses and good internal quality. Directly in line with the FQM, an extracting mill will operate with 3 stands (3-roll type), in order to extract the tube from the FQM mandrel. The extracting mill is of Kocks new design. Tube wall thickness and length is measured by a laser-ultrasonic system at the outlet of the extracting mill both for FQM and for sizing mill process control. At the outlet of the extracting mill, the tubes are transferred to a new intermediate reheating furnace of Danieli combustion design. Some tubes can be normalized in the furnace (with cooling to a temperature of around 500°C), and then reheated to a maximum temperature of approximately 950°C. The mother tube is elongated to the required finished dimension by means of a Kocks sizing mill, consisting of 14 stands (3-roll type), with three motors per stand. The last 3 stands have radially adjustable rolls to produce tubes in different grades and standards without stand change. All tubes are placed on the cooling bed, at the end of which the tubes are straightened in a 6-rolls machine. The tubes are then arranged into layers and transferred to the three cold saws, with carbide tipped blades, where they are end cropped and cut into final required lengths. At the outlet of the layer saws the tubes are marked with order and heat numbers and transported to the collecting benches

PIPE SUPPORT MADE EASY

The new standard System88 is an adjustable pipe support system, which combines safety, flexibility and durability in one product. Dis- cover a new standard for pipe transport by truck and train. Quality Choose a high quality system, supported by warranties and approval by TÜV Germany. As a complete package we offer loading advice and quality ac- cessories, such as tie-downs and non-skid layers.

Mobilität

Danieli – Italy Fax : +39 02 262451 Email : r.giannattasio@danieli.it Website : www.danieli.com

TMK – Russia Fax : +7 095 775 7601

Efficient & Secure - Easy to apply on every truck or train waggon - Designed for heavy loads - Cost saving, long life span - Adjustable for all diameters - Protects coated surfaces - Exchangeable parts - Guaranteed safety - Detailed instructions and complete service

Email : tmk@tmk-group.com Website : www.tmk-group.com

Tool line takes bite out of tube end finishing For manufactures of tubing products, or those who manufacture products with tubing components, Severance Tool has developed a line of tube end finishing rotary tools that can deburr, form, or chamfer as required by application requirements. The tools are designed to finish both the inside diameter and outside diameter of tubing ends in a single operation. Many of the tools feature adjustable, two-piece construction to enable work on same size tubing with varying wall thickness ranges. The Chatterless™ tooth geometry alternates tooth cutting angles to eliminate resonant vibration from the tool and workpiece for smooth finishes. 88

Line pipe Logistic Solutions Geestenberg 4 - 5571 SN Bergeijk, The Netherlands Tel. +31 (0) 497 542 527 Fax +31 (0) 497 555 399 E-mail: info@dhatec.nl

Patented and TÜV-approved. www.dhatec.nl

›

53

www.read-tpt.com

M arch 2008