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Novel Manufacturing of Bimetallic Gun Barrels

Award Information
Agency: Department of Defense
Branch: Army
Contract: W15QKN-19-P-0002
Agency Tracking Number: A181-090-0788
Amount: $99,910.06
Phase: Phase I
Program: SBIR
Solicitation Topic Code: A18-090
Solicitation Number: 2018.1
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2018-10-02
Award End Date (Contract End Date): 2019-03-31
Small Business Information
4718 B Street NW Suite 104, Auburn, WA, 98001
DUNS: 030321009
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tom Butler
 (253) 852-1298
Business Contact
 Tom Butler
Phone: (253) 852-1298
Research Institution
Gun barrels are subjected to wear and erosion from the hot propellant gases and high loads from the passage of projectiles.Sustained fire duration and rate of fire are largely limited by barrel thermal considerations, since the heat buildup in the barrel can cause rounds to fire prematurely (cook-off) or weaken the barrel and cause catastrophic failure. A cost effective solution of using a wear resistant liner with an inexpensive outer jacket has long been sought. Tantalum liners are proving effective for larger calibers but the methods for liner application are not suitable for small calibers. This proposal is for a new method to form and bond liners in place in 5.56 and 7.62 mm caliber barrels. The method plastically forms the liners in place and then metallurgically bonds them to the barrels through a thermal process. The process has been demonstrated on small bore tubes of titanium and steel outer jackets, with Stellite and refractory metal liners.The goal of this project is to demonstrate a manufacturing method to produce bimetallic gun barrels with 2-3 times the wear resistance, better thermal performance and cost less than existing gun barrels.

* Information listed above is at the time of submission. *

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