THE ADVANTAGES OF SHEET METAL PARTS
✓
✓
✓
✓
✓
MATERIALS AND TECHNICAL CAPABILITIES
What data is needed to assess the component?
The request should include the drawing of the finished part, material, thickness and quantity. For an assembly, joint positions, assembly dimensions and weld requirements are also needed. A flat file helps describe the cutting contours, while the 3D model clarifies bends and interferences. The flat pattern must be verified according to material, radii and tooling: it is not enough to flatten the geometry without considering deformation. EDR coordinates the assessment of cutting, bending and joining, so that tolerances and inspections refer to the final result, including any finishes.
Which thicknesses and bend radii are achievable?
Feasibility depends on alloy, material temper, thickness, bend length and available tooling. Inside radius, flange height, hole distance from the bend and the possibility of positioning the part without interference must be verified. Springback must be compensated in the cycle, as it varies with material and geometry. Cutting also depends on the equipment and the edge quality required. EDR confirms thicknesses and dimensions on the project, without assigning the production network a single limit valid for every operation.
Which tolerances apply to the assembly?
Cutting, bending and welding each contribute differently to dimensional variation. A precise contour alone does not guarantee hole position, angles and flatness after subsequent operations. Welding heat can also cause shrinkage and distortion. The drawing must therefore indicate the datums and dimensions to be met on the finished component. EDR assesses sequence, positioning and inspections; for some mating surfaces, machining after joining may be necessary.
Is welding always necessary after bending?
Only the operations required by the geometry are performed: a part may be only cut, or cut and bent. Welding is used to join parts when required. The sequence may change depending on accessibility and assembly.
How is the welding process chosen for the joint?
The choice takes into account material, thickness, joint, accessibility and finish requirements. Process, any filler material and inspections must be consistent. If specific qualifications are required, they must be verified with the manufacturer before the order.
Which inspections are needed to verify the welds?
Visual examination checks the accessible aspects of the joint; any non-destructive testing or leak tests are defined according to function and criticality. Method, extent and acceptance criteria must be stated in the specification.
Which finishes complete the assembly?
Deburring, weld bead finishing and surface protection compatible with the alloy can be considered. Visible surfaces and functional areas must be distinguished on the drawing. For stainless steel, cleaning of the welded areas must also follow the service requirements.
Are dedicated dies needed to produce the series?
Laser cutting follows a program and does not require a blanking die. Bending uses tooling to be verified against the shape; for repeat assemblies, dedicated positioning and welding fixtures may be needed.
REQUEST A TECHNICAL ANALYSIS