Since the company was created in 1946, DEFonTAINE has continued to develop the industrial process of flash butt welding and the numerous applications that it opens up:
starter motor ring gears for the automotive industry wher it remains the most economically viable solution, more than sixty years after its introduction.
the world of rolling bearings through slewing rings with the widest variety of applications, from railway bogies and public works machinery to radar rotation systems and soft drink canning machines;
aeronautical jet engine stator rings wher they constitute an economic replacement for ring-rolled parts more and more often.
DEFonTAINE RINGS is focusing on promoting this process as a solution to the most diverse industrial customers’ applications by developing the production of rings in a wide variety of alloy grades.
At a time when materials are becoming increasingly rare, in greater demand and more expensive, DEFonTAINE RINGS can supply forged products that are as economical as possible in terms of material by sticking as close as possible to the required machining dimensions.
With a proven track record for performance for large, medium and small-scale production, DEFonTAINE RINGS offers you its expertise as forging and machining specialists with a generalist vision of the industrial world.
For over 40 years, DEFONTAINE has been making rolled and flash butt welded rings for the automotive and aeronautics industries.
Thanks to its experience, DEFONTAINE can meet the various requirements issued by customers and can give proposals for the definition and optimization of rough parts.
The alloys used could change according to the activity field and can be very costly, mainly due to the materials used to product them. In this case, the rolling and flash butt welding process proves to be particularly beneficial for this activity branch as it reduces the quantity of material used compared with ring-rolled products.
The rings are made from supplies of hot-rolled or extruded bar, or rough or pre-machined ring-rolled parts. We define our procurement taking into account the economic and technical parameters. Procurement control is key element to guarantee the homogeneity of the final products. All operations from cutting to checking before delivery to the end customer are performed on our production sites enabling DEFONTAINE to keep total control over its output. The special processes to manufacture rings for aeronautic applications (flash butt welding, heat treatment and non-destructive testing) are meeting the NADCAP standards.
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Since the company was created in 1946, DEFonTAINE has continued to develop the industrial process of flash butt welding and the numerous applications that it opens up: