TPT March 2024

TUBE WELDING MACHINES & TECHNOLOGY

How to optimise HFI welding processes for superior tube quality IN metal tube and pipe manufacturing, high-frequency induc tion (HFI) welding offers indispensable speed and adaptability. Yet, to fully unlock its potential, meticulous control is essential. HFI welding employs an induction coil to heat metal strip edges, which are then fused by squeeze rollers. Achieving consistent welds demands precise management of mill geometry, material composition and operational factors like speed and power. Real-time temperature monitoring around the Weld “V” area is crucial for stability. By capturing data on key features such as Apex, v-angle and seam gap, fabricators gain control, minimising defects and maximising efficiency. Implementing a thermal measurement system such as the Xiris pre-weld HF inspection system on a tube mill can provide new forms of information that are of great use to tube fabricators. Using a SWIR thermal camera in a robust housing capable of withstanding the harsh welding environment, the Xiris HF pre-weld inspection system accurately monitors the features of the Weld “V” and all related geometry of the welding process on a high-frequency tube and pipe mill. This system offers fabricators important tools and real-time information to ensure consistent tube quality, reduce scrap and improve production efficiency. Key features in focus are: apex – marking the start of welding; V-angle – Influencing weld quality; V-length – indicating welding zone dimensions; weld length – affecting weld integrity; seam gap – vital for optimal welding conditions; and squeeze point – guiding weld compression. Incorporating the pre-weld inspection system improves safety by enabling remote monitoring, protecting operators from direct exposure to hazardous welding areas.

The weld “V” on an HF tube mill and its related features

In the dynamic landscape of tube manufacturing, prioritising pre-weld inspection and integrating advanced measurement technology like the Xiris system elevates capabilities, reduces defects and fosters efficiency and profitability.

Xiris Automation

www.xiris.com

Bültmann finishing lines for seamless or welded tube or rolling mill production

equipped with drawing, straightening, cutting, chamfering and NDT testing systems as well as automatic packaging and bundling systems. Thanks to state-of-the-art Industry 4.0 technology, the finishing lines are flexible and can be used for both large and small lot sizes. Sufficient buffer space on the entry and exit side areas ensures a continuous production. All systems can be extended individually

BÜLTMANN finishing lines are used directly in tube rolling mills or welded tube mills – both direct linking and stand-alone arrangements are possible. Based on 50 years of Bültmann experience, individual special solutions for the tube industry are designed in close cooperation with the customer. Proven Bültmann standard components are used. Depending on the requirements, the finishing lines are

Thanks to state-of-the-art Industry 4.0 technology, the finishing lines are very flexible

and based on the customer’s specific requirements.

Bültmann GmbH www.bueltmann.com

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MARCH 2024