Rifling Gun Barrels with Waterjets

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$492,470.00
Award Year:
2013
Program:
SBIR
Phase:
Phase II
Contract:
W911QX-13-C-0097
Award Id:
n/a
Agency Tracking Number:
A2-5325
Solicitation Year:
2012
Solicitation Topic Code:
A12-014
Solicitation Number:
2012.1
Small Business Information
4718 B Street NW Suite 104, Auburn, WA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
030321009
Principal Investigator:
Tom Butler
Managing Member
(253) 852-1298
tomb@ormondllc.com
Business Contact:
Tom Butler
Managing Member
(253) 852-1298
tomb@ormondllc.com
Research Institution:
Stub




Abstract
Refractory alloys such as tantalum-tungsten and ceramics are being pursued as a solution to high temperature erosive wear of gun barrels. However rifling of these materials with conventional broaching and electrochemical milling is proving to be difficult. This proposal seeks to demonstrate an innovative alternate grooving method, abrasive waterjet grooving. Waterjets are normally used to cut completely through materials but Ormond has developed a proprietary technique and software that uses waterjets to mill to a controlled depth. The process is being used to groove long channels in high temperature metals for scramjets, cooling channels in rocket nozzles, fluid channels in fuel cells and is even capable of milling grooves in silicon carbide and rhenium. This project will consist of designing and building a waterjet rifling machine to groove the 25 mm inside diameter of 2m+ long tubes and grooving of tantalum and silicon nitride. The baseline geometry will be the Bushmaster M-242. Cost projections indicate that this would be a very inexpensive approach and suitable for production operations. This project will demonstrate that the tolerances and surface finish required for rifling can be achieved economically with the new waterjet grooving process.

* information listed above is at the time of submission.

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