Aug 03, 2012
Technology for high-frequency tube, pipe weldingBack
Agriculture|Installation|Pipe|Power|Screen|Systems|Technology|Thermatool Corporation|Welding|Automotive|Equipment|Garden Machinery Sectors|Heavy-wall Mechanical Tubing Applications|Manufacturing|Pipe Production Equipment|Product|Products|Systems|Pipe|HAZControl Technology
© Reuse this
The company notes that the tool helps oper- ators understand the effects of frequency on the heat-affected zone of a weld. Frequency is an important factor in weld quality and by controlling this, manufacturers are able to control the depth of penetration of the heat during welding.
Decreasing the frequency increases the heat penetration for induction and contact welders.
HAZControl technology includes software that requires operators to enter values, such as intended speeds, outside diameters and wall thicknesses. It then uses a graphical interface to help the user understand how the different factors relate and provides a guide for selecting the best frequency to improve the process.
If any changes occur, for example, an increase in mill speed, the HAZControl technology suggests to the operator the changes which should be made to power or frequency to maintain the weld quality.
Operators can store the settings once an optimum configuration has been established. These settings can be reloaded for future production runs.
HAZControl features a durable control cabinet, touch-screen monitor and all the necessary attachments for linking it with a Thermatool welder.
Meanwhile, small-diameter, heavy-wall mechanical tubing applications continue to increase, particularly in the automotive, recreational vehicle, agriculture and garden machinery sectors.
Typical applications include the manufacturing of car headrest restraints, seat frames and side-impact systems. Commercial considerations are such that this type of tube needs to be produced at mill speeds that are economically viable.
“Often considered to be the hardest tube to weld, many producers simply have no option other than to apply excessive weld power to achieve a weld. “This is far from ideal and will deliver ‘blue’ tube at best, or a major increase in scrap in extreme cases.”
‘Blue’ tube refers to a whole tube section being heated, rather than just the weld area.
“This is not the case for mills that feature the latest-generation Thermatool high-frequency welders fitted with patented HAZControl technology, which is designed to provide precise, independent control of weld power and weld frequency on each and every mill run,” states Thermatool.
To achieve higher mill speeds and increased productivity, the weld conditions must also be improved and the correct selection and positioning of both the work coil and the impeder are essential, as is the installation of correctly sized squeeze rolls.
HAZControl technology enables the mill operator to store product process parameters for all types of tube, including small-diameter or heavy-wall tubes, providing quick and easy automatic operation on future mill runs.
The technology is suitable for difficult-to-weld products, such as small-diameter or thick-wall tube. It enables mill operators to start at a higher weld frequency and then reduce it to a point where the most appropriate weld properties are obtained, or to just above the point where the impeder begins to lose its magnetic properties.
Edited by: Chanel de Bruyn© Reuse this
Creamer Media Senior Deputy Editor Online
To subscribe email firstname.lastname@example.org or click here
To advertise email email@example.com or click here
Other Pipes, Tubes and Hoses News
Local industrial equipment, electrical and mechanical components supplier Elquip Solutions together with Taiwanese manufacturer YLM, is bringing the best in global tube-bending technology to the local industry. YLM is a specialised computer numeric control (CNC) and...
Updated 25 minutes ago A very serious structural problem is playing itself out in China and not merely a reorienting to consumption-led economy, says Council on Global Enterprise and Emerging Markets director Dr Harry Broadman. Broadman, who delivered the second keynote address at the 2016...
Updated 37 minutes ago The use of an SMS that directs Gauteng e-toll users to pay outstanding fees is illegal, said the Organisation Undoing Tax Abuse (Outa) on Wednesday. Outa, which changed its name from Opposition to Urban Tolling Alliance recently, said it needed the public to...
Recent Research Reports
Construction 2016: A review of South Africa's construction industry (PDF Report)
Creamer Media’s Construction 2016 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; key participants; local demand; geographic diversification; corporate activity; black economic...
Energy Roundup – February 2016 (PDF Report)
The February 2016 roundup covers activities across South Africa for December 2015 and January 2016 and includes details of a Government Gazette notice that confirms Cabinet’s decision to move ahead with the 9 600 MW nuclear procurement programme; State-owned power...
Energy Roundup - December 2015 (PDF Report)
The December 2015 roundup includes details of State-owned utility Eskom’s application to claw back R22.8-billion; South Africa’s ranking as an investment destination for renewable energy; and a nuclear expert’s thoughts on reactor designs for South Africa’s nuclear...
Water 2015: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2015 Report considers the aforementioned issues, not only in the South African context but also in the African and global context in terms of supply and demand, water stress and insecurity, and access to water and sanitation, besides others.
Input Sector Review: Pumps 2015 (PDF Report)
Creamer Media’s 2015 Input Sector Review on Pumps provides an overview of South Africa’s pumps industry with particular focus on pump manufacture and supply, aftermarket services, marketing strategies, local and export demand, imports, sector support, investment...
Liquid Fuels 2015: A review of South Africa's liquid fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2015 Report examines these issues in the context of South Africa’s business environment; oil and gas exploration; fuel pricing; the development of the country’s biofuels industry; the logistics of transporting liquid fuels; and...
This Week's Magazine
Power and automation company ABB is in the launch phase of its highest payload, multipurpose industrial robot, the IRB 8700. The robot has a reach of 3.5 m and can handle a payload of up to 800 kg. “When designing the IRB 8700, we emphasised reach and payload, as...
Identity and Access Management (IAM) is a critical facet of a connected security ecosystem, as controlling the confidentiality, integrity and authorisation of data access and use is key to securing new digital business channels. However, companies face several...
Data underpins digital business models, the digital economy, the Internet of Things and the fundamental changes in the ways people interact and protecting data is crucial to securing new ways of doing business, says T-Systems South Africa information and...
The City of Cape Town will issue a tender for the procurement of electric buses for its MyCiTi service, in line with the council’s commitment to lower its carbon footprint, says executive mayor Patricia de Lille. The tender, to be advertised early in February, will...
The iSimangaliso Wetland Park Authority signed a R10-million contract last month with local tailings storage facility specialists Cyclone Engineering Projects to remove about 100 000 m3 of dredge spoil obstructing the natural course of the uMfolozi river, in...