The Use of Steel Grit, Garnet and Diamond Coating of Nozzles in Extending Nozzle Life
Hood, M. and Dornfield, D.
Experiments at Mo S&T had shown that adding a thin vapor deposited diamond layer onto the throat section of an abrasive waterjet focusing tube would provide some performance enhancement during its lifetime. Initial testing did not, however, increase that lifetime. Tests using diamond coating on softer carbide substrates were not successful where the abrasive used was a garnet, but when steel grit was used as the abrasive a significant increase in operational life of the nozzles was achieved. While these tests did not extend into using harder carbide substrates, or graded carbide:diamond layers in the coating, it has been shown that applying diamond coating to two half-nozzle sections before recombining them did allow total diamond coating down the cylindrical part of the focusing tube was successful. The recombined nozzle functioned well without any evident negative results from the sectioning process. © BHR Group 2010.
J. Zhao et al., "The Use of Steel Grit, Garnet and Diamond Coating of Nozzles in Extending Nozzle Life," BHR Group - 20th International Conference on Water Jetting, BHR Group, Jan 2010.
20th International Conference on Water Jetting
Mining and Nuclear Engineering
Best High Pressure and Drilling Technology GmbH (BHDT)
KMT Waterjet Systems
The Water Jetting Association
Article - Conference proceedings
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