TPT March 2014

Technology News

Roll-less forming for small stainless steel tubes

tubes of stainless steel 300/400 series, Inconel 625, 718 and Hastelloy C-276 with wall thickness from 0.12 to 0.5mm.

used to produce stainless steel tubes for bellows and soft pipes with very thin wall thickness and big diameter.  The main structure of line consists of forming system, welding system, traction system, sizing system, cutting system and electrical control system. It is suitable for

AS well as traditional roll forming tube mills, W&J, Taiwan, has recently developed roll-less tube forming technology. W&J Roll-less Mill WNJ- SMBT is a stainless steel pipe making machine, using non-roller forming technology. This innovative design is

W&J Group – Taiwan Email: wnj@wnjintl.com Website: www.wnjintl.com

Brandt launches thread tables BRANDT Engineered Products has designed and delivered pipe handling equipment known as thread tables to many tube and pipe producers. Its thread tables integrate with the most modern machine tools. These tools are big bore lathes, often called ‘threaders’ and are being used to produce both API and premium threads on tube and pipe in today’s market place. Brandt equipment offers a competitive edge by positioning material in and out of the threaders quickly, keeping up with the improved cycle times offered by the latest machine tool suppliers. Maintaining cycle times with threaders is a critical variable to ensure the investment in the machine tool is achieving maximum return. process. The independent idler rolls were engineered and manufactured to reduce unwanted pipe movement at multiple locations along its length. In the new thread table design Brandt has added containment rolls. This dampens the whipping motion of pipe, allowing the machine tool to produce API and premium threads on the end of each pipe with greater confidence. The new design features independently controlled turning rolls and containment rolls. This allows the operator to adjust the setup for an individual pipe. and improved position control. The new design is meant to eliminate costly repairs caused when pipes bump the machine tool upon entry. These improvements also mean a reduction in overall cycle time to produce a thread.  Saw tooth style paddle arms are used to transfer the pipe in and out of the machine simultaneously with quick cycle times, enabling maximum uptime and productivity. The Brandt thread table provides benefits by maximising valuable machine tool time, maintaining low cost of production and maintenance, minimising rework caused by unwanted pipe movement and increasing productivity through quick material handling.

Pinch rolls are used at the head of the thread table to protect the machine tool and improve position control while elevating V-rolls enable various diameter pipes to be fed into the machine tool at the proper elevation. In the new design Brandt has improved the pinch roll assembly by adding twin lead ball screws. This has resulted in more consistent pinching of the pipe

 The Brandt thread table utilises adjustable stops to position one pipe at a time on the table. The table is designed with four independent idler rolls used to absorb vibration while the pipe is spinning during the threading

Brandt Engineered Products – Canada Email: tubeandpipe@brandt.ca Website: www.brandt.ca

Slitting and packing lines for coils from Italy

used to cut the scraps instead of recoiling them by use of a traditional scrap recoiler. Guida uses a specific material for the scrap chopper blades – a special alloy studied by Guida technicians in cooperation with an external partner with metallurgy experience.

special materials chosen after many tests, taking advantage of experience in the field, checking and testing new instruments and technologies. Easy maintenance is achieved by designing the mechanical units to allow for disassembly. Low expense for spare parts is possible thanks to the use of first quality components that grant long production life. The ‘scrap chopper’ is an important and strategic machine in the slitting line,

GUIDA Impianti SpA was established in 1962 to build slitting and packing lines for coils. More than 800 lines and machines have been built to date. The company’s lines are projected and built for a long production life (many are still working after 45 years’ production), with easy and inexpensive maintenance, low expense for spare parts, low noise and low operator effort, and in respect of safety law requirements to meet 2006/42/EC standards. Guida uses

Guida Impianti SpA – Italy Fax: +39 02 93797007 Email: info@guidaimpianti.com Website: www.guidaimpianti.com

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M arch 2014