2 Septembre 2016
Axle Pins, Axle shafts, Rear axle beam of Peugeot and Citroen have specific characteristics, they lie in the fact that the surface of the shaft has a hardness of 58 HRC - 63 HRC scale Rockwell as Marxxon manufacture, wherein the shaft has the usual mid-hardness, whereby it remains pliable. These properties are achieved by particular details heat treatment - heat treatment rear axle beam, which only carbon saturating surface parts, Marxxon Machinery making it hard, in this case carburizing depth is 1 mm - 1.5 mm. The Heat treatment is very long and energy-intensive process made by Marxxon Machinery, the intricacies of this technology is not known to many employees of the thermal areas. For quality heat treatment Marxxon using a special type of steel, for example, a series of QI: 20hn, 40KhN, 20hn3a, 40hn3a.
A much more simple, accessible and cheap different kind of heat treatment - hardening. In the process of hardening item acquires hardness over the whole volume from the surface to the center. Tempering gives details of sufficient strength while working on compression and tension, but the details become brittle. Lacking the required elasticity, they are not suitable for use as shaft experiencing loads similar rear load beam. Heat treatment rear beam imparts plasticity shaft axis and protects it from damage acting at sharp bending loads. Some other producer from China can not reach the standard hardness of 58 HRC - 63 HRC.
Sometimes, some other factory manufacture of the rear axle shaft in makeshift conditions, take more detail finished cemented and eat through its diameter to the desired size. Keep in mind that the hardened layer details of which are trying to make the finger back of the beam may have a depth of 1 mm - 1.5 mm and protachivanii details, this layer will cut off your axis and the surface of crude that would soft. Perhaps carburization layer is not cut all, but nevertheless its thickness may be insufficient. In order to face the axis of the finger Marxxon produce on which the "rock" of the bearing rollers are not forced into the soft layer of heat treatment depth should be 1 mm - 1.5 mm.