Patent ID: 11872670
Assignee: OMAX CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 27:
28. A method for operating an abrasive waterjet system, the method, comprising:
supplying pressurized liquid to a jet-forming orifice of a cutting head of the abrasive waterjet system;
forming a jet from the pressurized liquid at the jet-forming orifice;
passing the jet through a mixing chamber of the cutting head while the mixing chamber contains slurry including abrasive material and liquid, wherein passing the jet through the mixing chamber causes the abrasive material to become entrained in the jet; and
recycling the entrained abrasive material through a substantially closed-loop circuit including the mixing chamber, a catcher of the abrasive waterjet system, and a conveyance of the abrasive waterjet system, wherein the conveyance is configured to carry slurry collected from the catcher toward the cutting head;
adding fresh abrasive material to the catcher; and
passing at least 90% by weight of the added fresh abrasive material through the circuit at least twice.