In the field of precision machining, the production of complex components requires the use of advanced technologies capable of ensuring tight tolerances, shaped profiles and consistent results over time. Among these, wire EDM remains an indispensable solution for all those cases where traditional milling is insufficient to achieve the desired geometry, finish or accuracy.
SIAT Srl, thanks to its dedicated special machining department, offers a professional wire EDM service for the manufacture of highly complex moulds, inserts and technical components, working on request with all types of conductive materials.
What is wire EDM and how does it work
Wire EDM (also known as Electrical Discharge Machining) is a cutting process that uses a metal wire (usually brass) as an electrode to remove material from the workpiece via electrical discharges. The entire process takes place in a dielectric environment with no physical contact between the wire and the material.
The distinctive feature of this technology lies in its ability to perform machining with extremely high precision on thick materials, without generating mechanical stress or thermal deformation. It is ideal for complex shapes, blind holes, sharp corners and components requiring tolerances of less than a hundredth of a millimetre.
When it is preferable to traditional machining
Although milling and turning are widespread and fundamental processes in mechanical machining, wire EDM offers unique advantages in cases where:
- it is necessary to maintain extremely tight tolerances;
- intricately shaped profiles or sharp internal edges need to be produced;
- the material is particularly hard or hardened;
- a flawless surface finish is required without the need for post-processing;
- The component must not be subjected to mechanical stress during machining.
This technology is widely used in the production of blanking dies, shaped inserts, special tools, structural components and high-value-added small engineering parts.
The advantages of EDM technology for precision engineering
Adopting wire EDM within a metalworking production line offers numerous advantages, particularly in terms of the quality and reliability of the result.
Absolute precision
Machining is controlled by high-resolution CNC systems that enable extremely accurate cuts on complex geometries, with controlled surface roughness and tolerances of less than 5 microns.
Machining without cutting forces
Material is removed by thermal erosion, without direct contact. This prevents any deformation or residual stress, making the technology ideal for fragile, treated or finely machined materials.
High surface quality
Parts produced by EDM feature perfect edges and smooth surfaces, often ready for final use without further finishing.
Flexibility and repeatability
Once the cycle has been defined, the process can be repeated with the same precision on a series of identical parts, ensuring product consistency, reliability and traceability.
Industrial applications and sectors served
SIAT’s precision machining department, equipped with EDM machines, serves companies operating in numerous highly specialised fields, including:
- Automotive and transport, for the manufacture of moulds, tooling and structural parts;
- Electromechanics, for shaped inserts and conductive components;
- Small metal parts, where complex shapes are required in confined spaces;
- Thermal engineering, for the construction of moulds for heating and ventilation systems;
- Technical tooling, for the production of customised shapes with profiles that cannot be machined by milling.
Every project is managed with the utmost care, starting from the analysis of the technical drawing or the processing of the CAD file right through to the delivery of the finished part.
Integration into the SIAT production chain
Wire EDM is fully integrated into SIAT’s business processes, which also include:
- Fibre laser cutting and metal shearing;
- Bending and assembly;
- Mould and tooling construction;
- Industrial packaging and logistics.
This vertical integration allows us to optimise time, costs and quality, with the ability to manage even the most complex processes in-house, without intermediaries and with a single point of contact for the entire production cycle.
Why choose SIAT for precision EDM machining
With over 40 years of experience, a technologically advanced machine park and a highly qualified team, SIAT Srl is a reliable partner for all companies seeking high-precision mechanical machining with a high technical content.
The use of wire EDM in bespoke projects allows us to offer solutions that combine precision, reliability and adherence to delivery times, even for small batches or technical prototypes. Contact us for technical advice. Discover how our wire EDM technology can support your projects with quality and expertise.