Sintering is a thermal treatment on a metal powder or compact metal without heating it to the point of liquefaction in order to increase strength and resistance by means of fusion between particles.
Engineering, design and manufacture of sintered steel parts for use in engines, transmissions and other automotive systems. We specialise in the manufacture of large quantities of parts which, as well as having complex geometrical properties, need to meet demanding functional qualities.
Sintering is a modern technique used when precision components are required in large numbers. It allows for this without material wastage and, in comparison with other technologies, using highly reliable and economical processes. The two basic elements used in the manufacture of sintered components are powdered metal and tools. These are used to make a sintered part in three steps: powdered metal mix, compacting, sintering.
The powder mixture is placed into the tool cavity by means of gravity and uni-axial pressure is applied which is determined based on the desired final density. The compacted part is ejected from the tooling and the result is a so-called ‘green part’ which has a certain mechanical strength and can be handled.
Sintering is a thermal cycle which consists of heating the compacted part for a certain length of time at a temperature which is below the base metal’s melting point. The high temperature welds the powder particles together and diffuses the alloy elements through a solid-state diffusion mechanism. The end result of these basic steps is a metal part with a certain micro-porosity and high dimensional precision.
We specialise in technical parts with highly complex geometrics and demanding functional needs. To this end, a number of materials have been developed and which enable extensive dimensional stability and very specific metal structures to be achieved. Raw material evolution in AISI:
6.8-7 medium-density steels.
High carbon steels
Elevated dimensional stability in sintering with a reduction in the furnace liquid stage times. This enables posterior calibration steps to be eliminated.
7-7.2 high-density steels.
High carbon steels, chrome alloys,
molybdenum and nickel.
Control específico de porosidad, consiguiendo estructuras controladas de temple. Alta resistencia en superficie (700 HV de dureza mínima) e interiores flexibles (400 HV). Specific porosity checks leading to controlled mettle structures. Elevated superficial resistance (700 HV minimum durability) and flexible interiors (400 HV). Highly resistant to wear on gears and parts which work with friction.
Manufacturing and laboratory facilities
We mainly manufacture sintered steels without aluminium, bronzes or stainless elements. The maximum lathe size limit is 70mm external diameter. 30 to 140 ton Dorst presses including one latest generation electric multiplaten press with a 70 ton output.
600 mm belt sintering furnaces. Amongst others, an Elino furnace.
With its headquarters in Spain, MEK has extended its international activity and capacity in order to respond to all customer needs.
Pol. Ind. de Santecilla s/n
E-09585 Valle de Mena.
Burgos – Spain
Tel +34 947 140 522