Wherever high-quality precision components are in demand, KÖCO is the right partner.
In close cooperation with our customers, the desired parts are developed to mass-production stage and then cold-forged on multiple-stage extruders according to the blueprints.
Mechanical finish, annealing and surface coating complete the service range.
No interruption of material fibres, but formation of fibres in line with the out-ward form!
Increased tensile strength, hardness and yield strength, depending on the degree of deformation
Compression and hardening of the material!
An increase in strength, depending on the degree of deformation, which opens up possibilities of using lower-cost, non-alloy steel as the basic material
Elimination of turning and drilling processes!
Close dimensional tolerances and excellent surface finish!
Saving of surface treatment processes
Thanks to cold forming, our resistant bolts are produced in only four steps on a four-stage press (stage set).
The blank is cut to the desired length by the ring material
Extrusion of the smallest diameter
The head of the blank is upset
The deburring grinds off the cold deformation