Process of making a multi-section bomb casing
AssigneeNational Forge Company
InventorJames D. Ruhlman
Life of this patent
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Abstract
A process for making multi-section bomb casings of high strength alloy steel at a reasonable production rate that have the strength and fracture properties of single-piece casings, with the sections being joined using friction welding techniques.
Claims22
A process for making bomb casings having a plurality of sections at a predetermined production rate, with the resulting bomb casing having the plurality of sections joined together such that the casing has substantially uniform metal properties along its length and across each location where two sections are joined, comprising the steps of:
- (a) forming a substantially hollow section by a casting method;
- (b) preliminarily heat treating the section formed at step (a);
- (c) preparing for welding predetermined edges of the section preliminarily heat treated at step (b);
- (d) repeating steps (a), (b), and (c) for each of the plurality of sections of the casing;
- (e) assembling the casing from the plurality of sections formed by steps (a), (b), (c), and (d) by welding together adjacently disposed sections of the casings at the edges prepared for welding;
- and
- (f) heat treating for properties the casing assembled at step (e).
A process for making bomb casings having a plurality of sections at a predetermined production rate, with the resulting bomb casing having the plurality of sections joined together such that the casing has substantially uniform metal properties along its length and across each location where two sections are joined, comprising the steps of:
- (a) forming a substantially hollow, ogive-shaped, front section by a casting method;
- (b) preliminarily heat treating the section formed at step (a);
- (c) forming at least one substantially hollow, cylindrical-shaped section by a casting method;
- (d) preliminarily heat treating the section formed at step (c);
- (e) preparing for welding predetermined edges of the sections preliminarily heat treated at step (b) and (d);
- (f) assembling the casing from the plurality of sections formed by steps (a), (b), (c), (d), and (e) by welding together adjacently disposed sections of the casing at the edges prepared for welding;
- and
- (g) heat treating for properties the casing assembled at step (f).
Dependencies are inferred from the claim text.