Having expertise in a wide range of forging methods and combined processes, Winning BLW GmbH is capable of offering its customers extremely competitive solutions and ready-assembly components that reflect the latest development in technology. Our speciality is precision forging, which is a combined process including hot and cold forming.

Precision forging.

This technology, a combination of hot and cold forging processes, permits the manufacture of high-strength components with complex functional elements, ready-for-assembly. They deliver a high surface quality with close dimensional tolerances.

Additional functions such as, recesses, stops or oil grooves can be integrated into the components using specialised processes. One single forging process generally replaces several cost-intensive operations, including machining, cutting and welding operations.

Warm forgin.

Our plants have modern forging lines ranging from 300 t to 2,500 t for pressed or hot forged parts such as wheel hubs, flanges and transmission gears in medium and high volume production runs.

Complex forging parts (near net) for the automotive industry are produced very efficiently on modern, fully automatic multi-stage presses. High-volume axle parts such as flange shafts and stub axles are produced at very high speed using automatic Hatebur forging lines.

Components of high geometric and dimensional accuracy are produced using a special lateral extrusion process.

Cold extrusion.

Differential bevel gears and steering pinions are produced using newly developed cold forging processes with ready-for-assembly toothing forms.

Machining to finished parts.

Differential bevel gears and transmission components are normally processed ready-for-assembly. The efficiency of our machining processes is complemented by specially developed clamping and locating technologies, automated processing stations and world-class carburisation and hardening processes.

We use modern hard-broaching and hard-turning technologies for components with very tight tolerances.

Heat treatment.

Material and function-specific heat treatment processes are used to adjust or improve the mechanical properties of precision forged components.

  • The optimum preconditions for further processing (machining properties) of the precision forged parts are created using integrated heat treatment in the forging process – and may include specific annealing processes.
  • The functional properties of fully-finished components are guaranteed by material-specific hardening processes (case-hardening, carbonisation, nitration-hardening, quenching and tempering etc.).

Surface treatment.

Favorable running-in and fatigue strength properties, as well as corrosion protection, are obtained using specialised surface treatment of the precision forged parts.

  • The running-in properties of precision forged differential bevel gears is improved by specialised coatings, including manganese phosphatisation. In addition, contact and rolling wear is reduced.
  • Mechanical surface strengthening processes, including shot peening, mean that the favorable strength properties of precision forged components can be further increased.
  • Components are corrosion protection according to the customer’s requirements.