A welded assembly that is well-made as a prototype or small series is not automatically suitable for structural off-take. As volumes increase, dimensions, welding sequence, and inspection must be identical for every delivery, while capacity for series welding is scarce in the region.
Roosen helps OEMs to produce steel welded assemblies in series using robotics, including the cutting and bending of sheet metal parts. This keeps quality, lead time, and capacity manageable as your off-take grows.
A documented welding process for steel assemblies up to 5 meters and 500 kilograms.
No contact with carbon steel during processing.
The complete assembly measured against the drawing.
Cutting, bending, and welding without handovers between suppliers.
Roosen handles the assembly as an NPI. During the prototype or pre-series, we establish the welding program, fixturing, and welding sequence, and we check the dimensions of the complete assembly against the drawing. Series production starts after your sample approval.
Roosen assesses which assemblies are suitable for robotic welding and establishes the welding process in a pre-series. Production and planning are set up for repeating off-take, so that robot capacity is aligned with your expected volumes and the agreed delivery rhythm.
At Roosen, laser cutting, bending, and welding take place within the same company. The dimensions of the sheet metal parts are aligned with the subsequent welding process, and we organize any post-treatment via external partners. This gives you a single point of contact for the entire route.
Roosen establishes welding parameters, torch angle, speed, and sequence in the welding program, so that every assembly is welded in the same way. A 3D scan of the complete assembly shows where deviations occur, allowing the welding process to be adjusted in a targeted manner.
Roosen establishes welding parameters, torch angle, speed, and sequence in the welding program, so that every assembly is welded in the same way. A 3D scan of the complete assembly shows where deviations occur, allowing the welding process to be adjusted in a targeted manner.
Roosen establishes welding parameters, torch angle, speed, and sequence in the welding program, so that every assembly is welded in the same way. A 3D scan of the complete assembly shows where deviations occur, allowing the welding process to be adjusted in a targeted manner.
Roosen establishes welding parameters, torch angle, speed, and sequence in the welding program, so that every assembly is welded in the same way. A 3D scan of the complete assembly shows where deviations occur, allowing the welding process to be adjusted in a targeted manner.
Roosen establishes welding parameters, torch angle, speed, and sequence in the welding program, so that every assembly is welded in the same way. A 3D scan of the complete assembly shows where deviations occur, allowing the welding process to be adjusted in a targeted manner.
For single units and small series, a flexible, manual welding shop often works well. With structural off-take, the same setup becomes a limitation: capacity is difficult to expand and repeatability depends on who is at the welding table.
Roosen helps
We map out which assemblies are suitable for robotic welding, what dimensions the sheet metal parts must have for this, and how the welding process is established during a pre-series.
What this delivers
A welding production that can grow with your volumes, without every volume step requiring a different supplier or working method.
Laying a weld bead is one thing. Ensuring that the five-hundredth assembly has the same dimensions as the first requires control over the fit of the sheet metal parts, the fixturing, the welding sequence, and the deformation caused by heat input. With manual welding, this control lies largely with the individual welder.
Roosen therefore sets up series work on the robot. Welding parameters, torch angle, speed, and sequence are established during the pre-series and then executed in the same way for every assembly. Approximately ninety percent of the welding is robotic, with manual welding as support for larger structures and actions that the robot cannot perform.
Stainless steel loses part of its corrosion resistance when it comes into contact with carbon steel particles, for example via tools, fixtures, or grinding dust. In applications where this is not permitted, a clean working method alone is not enough. The working environment must also be separated.
Roosen therefore processes stainless steel and aluminum in a separate welding department, detached from steel production. These materials are welded manually, within the same planning and quality agreements as the robotic work.
In welded assemblies, deviations rarely occur in a single dimension. Shrinkage and deformation affect the entire product, meaning that a check of a few critical dimensions does not always show whether the assembly as a whole fits into the next step of your production.
Roosen therefore scans the complete assembly with a 3D scanner and overlays the measurement on the drawing. This makes it visible whether the product falls within the agreed tolerances and where the welding process needs to be adjusted before deviations end up in the series.
The sheet metal parts are cut in Belgium and immediately passed on to the welding department. You do not need to manage a separate cutting supplier.
Bending work is set up as part of the welded assembly. As a result, the dimensions of the bent parts align with the subsequent welding process.
Steel is welded using robotics, while stainless steel and aluminum are welded manually in a dedicated department. The complete assembly is checked against the drawing.
If your assembly requires post-treatment, such as coating, Roosen organizes this via external partners. You maintain a single point of contact for the entire route.
Welded assemblies can be further finished within Roosen Industries, treated under cleanroom conditions, or incorporated into a mechatronic module.
Deliveries proceed according to the agreed rhythm. Our sales team maintains regular contact regarding your expected off-take and any subsequent volume steps.
Production and planning are focused on repeating off-take, not on single units.
Execution is not dependent on individual working methods.
Cutting, bending, and welding align with each other within one company.
From sheet metal part to assembled module, within a group with production in the Netherlands, Belgium, and India.
The determining factor is primarily whether the off-take is repeating and predictable. Series from one hundred to ten thousand units per year fit well with the setup of our welding production in Belgium. Single units and one-off orders fall outside the order profile.
For robotic welding, it involves assemblies up to approximately 5 meters and 500 kilograms. Larger structures are welded manually. Suitability is always assessed per product.
Robotic welding is focused on steel. Stainless steel and aluminum are welded manually in a separate department, so that stainless steel does not come into contact with carbon steel.
That depends on the completeness of the product information and the extent to which the assembly is suitable for robotic welding. A takeover follows the same route as a new product: checking the information, a pre-series, and sample approval.
That is the setup that Roosen prefers. Laser cutting and bending take place in the same company as the welding, so that the sheet metal parts align with the welding process and the lead time remains short.
Post-treatments such as coating are carried out via external partners. Roosen organizes the route and remains your point of contact.
In most cases, the customer provides the drawings. Our engineers assess the manufacturability and contribute ideas where the design can simplify the welding process or series production.
That depends on the scope we establish together. Within Roosen Industries, an assembly can be welded, finished, treated under cleanroom conditions, and assembled into a module.
Prefer to discuss this directly? Call us at +31(0)497 517 171