Metalworking

The core activity of SMI Maatwerk is manufacturing mechanical parts, components and machines by welding, turning, milling, cutting, sawing and other metalworking activities to create the desired result all in-house. Engineering and project management are the basis for a good cooperation of all the disciplines of SMI Maatwerk. This is complemented by knowledge and expertise from outside the company. The combination of a good preparation, modern techniques and well able professionals are a guarantee for a high end product.

SMI is direct and indirect active in many different markets. Some of the markets and industries in which SMI is active are: Defence, Superyacht build, medical and the offshore equipment. Often, our solutions and application developed for a particular market sector or product can be reused in other market sectors.

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Machining

Milling – At SMI we offer several milling services: 3 axis milling, 5 axis milling and 5 axis simultaneous milling. Milling is the machining process of using rotary cutters/tools to remove material from a single piece of metal by advancing in a direction at an angle with the axis of the tool. The result is a product created out of a single piece of metal, this way you do not have to weld parts together which increases the strenght and durability of the products.

Turning – Turning is a machining process in which a non-rotating cutting tool moves linearly while the workpiece rotates causing a perfect cut in a cylindrical shape. As the working piece is rotating with a high RPM, the cutting tool only needs to move straight on the X and Z axis. Usually the term “turning” is only used when processing the external surfaces of the work piece, whereas when the same cutting action is applied to internal surfaces is called “boring”.

Drilling – Same as milling, is a cutting process that uses a drill bit to cut a hole in metal, steal, high strenght steal, aluminium or stainless steal. The drill bit is pressed against the workpiece and rotates at rates from hundreds up to even thousands rotations per minute. We can drill holes up to 50 millimeters, bigger holes can be created on our CNC milling machines. Our milling machines are equipped with several drill tools to drill larger and more advanced holes. The milling machines can quickly drill multiple holes with the highest accuracy.

Bending

Metal Bending is a manufacturing process that produces a V-shape, U-shape, or channel shape along a straight axis in the work piece, most common in sheet metal. Over time, SMI has produced a wide range of different products in markets with the highest standards such as the Super yacht industry.

When looking for sheet metal bending in series, our sheet metal shop in leeuwarden is equipped with 3 different machine presses to deliver fast and with the highest precision. With our quality control system, every product is tested and checked for the smallest devitions to guarantee the highest standards. This makes sure that when producing a product in series, every product will have the same qualifications and dimensions. With the close connection between the different production facilities, a strong synergy is created.

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In-house

Besides our advanced milling department, SMI has all the required tools and machines such as cutting, grinding, sawing and rolling in-house for a quick and high quality metalworking process. With the full in-house metalworking process, SMI can guarantee the maximum quality of each product or equipment as no other suppliers are required during the build.

Thanks to the accurate measuring system, even the smallest deviations (up to 0.001 millimeters) can be detected. Avoiding deviations are especially necessary within moving parts, medical equipment and high demanding markets to guarantee maximum safety and durability of the product.

Welding

At SMI we are certified for the most common welding techniques: MIG welding (process 131), MAG welding (process 135 and 136) and TIG welding (process 141). Besides the standard iso 9001:2008 certificate, SMI is also ISO 3834-2 certified. This certificate shows that SMI can safely weld high quality structures for specific sectors such as Offshore, petrochemical, heavy duty lifting. During the process executed by qualified welders, a welding coordinator supervises the approved procedures. These certificates apply to the entire welding organization.

Because of the wide range of welding processes, SMI Maatwerk can weld; steel, high strength steel, wear resistant steel, stainless steel and aluminum. Depending on the application and purpose of the final product, SMI Maatwerk can give the necessary advice on which materials should be used. For our offshore market, it is common that high strength steel is used as these products have to handle heavy loads and structures. Read more about our welding possibilities

After treatment

Seatools

Numansdorp - NL

Super yachtdoor

Opening up the side of the yacht offers a huge amount of additional possibilities to the yacht, such as tender storage, beach clubs and others. Cramm doors are highly reliable even under the toughest sea conditions. The design of the yacht door is based on a 3D model of the client’s yacht, and custom-made in aluminium, steel or stainless steel to enable differing shapes, sizes and weights.