Case: Just-in-time am-delivery – flexible customization

Producing Varel nozzles with additive manufacturing can achieve 50–70% saving in lead times, which will significantly reduce Varel’s inventory.

The Varel high-precisionnozzles are used to inject fluid across fixed cutter bits. These are small products subject to the extreme conditions of underground hard-rock drilling and extreme hydraulic .conditions.

Their sophisticated hydrodynamic design optimizes fluid flow for more efficient cooling and cleaning, leading to faster cutting and evacuation of drill cuttings and optimized hydraulic energy usage. Stability, efficiency, duarbility and steerability are essential for these components - and the hydraulic capabilities is an enabler to achieve that.

With additive manufacturing we can receive parts faster and can thereby reduce our inventory significantly.

“Today the nozzles are manufactured with traditional, machining methods, which is a long process with long lead times. For Varel it means that we need to keep a large inventory to be able to serve our customers. With additive manufacturing we can receive parts faster and can thereby significantly reduce our inventory,” says Bruno Cuillier, Global Product Engineering Director at Varel.

Facts

Outcome
Flexible customization, to reduce lead times and inventory – and improve performance.

Designers
Magnus Boström and Bruno Cuillier

Material
Cemented carbide, WC12Co

Additive manufacturing technology
Binder Jetting

Post processing
Sintering and sand blasting

Printable precision threads in cemented carbide a key challenge

One of the key challenges in this additive manufacturing development project was to build precision threads in cemented carbide, since deformations occur in the subsequent sintering process. A challenge that the additive team within Sandvik managed to overcome.

Producing Varel nozzles with additive manufacturing allows for customizable options and can achieve 50-70% saving in lead times, which will significantly reduce Varel’s inventory.