From the basic processes, different complementary operations are given in order to perfect these sintered parts. They are usually subject to additional processes such as sizing, joining processes and machining, these are the most prominent, in order to achieve narrower tolerances and specific properties for particular applications, properties that can not be achieved through the basic cycle.



Most of the references manufactured in this plant need this process. Once the basic processes have passed, the piece comes out with form and resistance, but the specifications and needs of the customers on the pieces force the piece to be perfected to the millimeter. In this phase, the piece is perfected thanks to the dies made in the stamping department and it is given the exact shape that customers need.   

Shot blasting 

Blasting is the process used to clean and strengthen the piece, leaving it smooth and free of impurities. It consists of accelerating by turbines an abrasive that will impact on the surface of the piece. When the piece leaves the sintered is a rough and rough piece. Once this phase is over, it achieves an excellent degree of cleaning and pickling.   


In this section, the necessary transformation operations are given to the piece thanks to the separation, filing and elimination of the material. 

Steam treatment

It is a thermal cycle of controlled oxidation of a steel, carried out in furnaces with the water vapor atmosphere. It is applied to increase the compressive strength of the component and improve the resistance to environmental corrosion.

Heat treatments

These treatments aim to modify the properties of a material, increasing its strength and hardness. At MFS, we use carbonitriding and cementing treatments to achieve the best results in our products.

Cap process

The cap is placed in the piece once it has been through the previous processes. The cap increases the resistance of the final piece.


In this process, pieces are machined by abrasion, removing material from a piece in order to shape and mold it. Grinding is usually a part finishing process, used in the final stage of manufacture, to improve dimensional tolerance and surface finish of the product. Grinding is a machining operation performed on parts that demand demanding measurements and tolerances, whether geometric, dimensional or surface finish.

Teflon process

It is a contribution of Polytetrafluoroethylene, better known as Teflon, on the surface of the component, which modifies the surface properties without changing the chemical composition of the metallic base. It is applied with the intention of reducing the wear and friction of the piece, protecting it against corrosion.

Visual inspection 

Once the pieces pass the previous processes, they pass to the penultimate productive phase, the visual inspection. In this process is where the piece is analyzed in search of a defect. We have three machines of last generation in visual inspection, and 5 workers working in the same function. This is due to the high manufacturing pace we have been in recent years. 

The work of the machine of visual inspection is simple, through laser, if the machine detects any imperfection in the piece discards it and does not let it follow the process of the correct pieces. 


Discarded defective parts are packed in boxes with the MFS logo. This process, like the previous one, is done automatically and manually. The packing machine receives the boxes and automatically places the pieces.

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