EXECUTION OF PLATES
For the construction of platelets, using steels of quality.
Platelets small step for chain tools are built through progressive dies, while the platelets are first sheared with higher pitch and then drilled.
With the use of new technologies mechanical plates can also be derived from laser cutting.
The reclamation of the plates gives the necessary resistance.
The surface is cleaned with a process of shot peening, to improve the characteristics of resistance to fatigue, tumbled, and then cleaned.
For the construction of the chain pins, normally using hardening steel cold drawn; in specific cases they are constructed with hardened steel when you have chains that must have a high tensile load.
The pins are usually truncated standard with high-speed machines.
Sharp edges, which are formed in the cutting process, are rounded by cold forming or tumbling and then be adjusted for maximum homogeneity of production batch.
The special pins are normally turned.
Are then treated cemented in order to have a high resistance to wear and then recovered to improve the elasticity.
EXECUTION OF BUSH
The bushings are made of stainless hardened steel and cold-rolled edged and are usually wrapped or printed for cold extrusion. From a certain outer diameter of the bushings are obtained by turning. Pursued to machining the sleeve is cemented.
IMPLEMENTATION OF THE ROLLERS
The rollers can be constructed with the following procedures:
- cold extrusion;
- parting from the tube.
the cold extrusion is the most widely used process for the construction of the rollers for the chains.
In the extrusion are cut to measure cylinders dimensioned with precision, which subsequently become rollers using cold calibration in various stages.
Through these processes are obtained rollers with very precise roundness and concentricity.
The used material is hardened steel or alloy steel.
After mechanical processing are cemented and tempered (or relief).
The rollers are made of tempered steel, plastic and insensitive to shocks.
ASSEMBLY OF CHAIN:
Assembly takes place in fully automatic systems.
A continuous cycle, the automatic mounting assemble the individual components, form the chain and confirm.
At the bottom line of hydraulic prestirano chain with a shot that goes from 1/3 to 1/2 of the nominal tensile and in this way the components of the chain undergo a settling static.
At the same time the elasticity is detected and the control on the linear development.
Exceeded subsequent checks, the chains are lubricated according to the use to which they are intended.