Study of Rivets for Construction of Armor Plate Shields for Gun Director Mark XXXVI
Abstract
The purpose of this investigation was to determine the proper composition and design of rivets for use in the construction of armor plate shields for the Gun Director Mark XXXVI. Conclusions: (1) The hot driven buttonhead rivets under consideration, namely, Chromansil SAE No. 2315, SAE No. 4615, were all satisfactory from the point of view of ballistic efficiency and freedom of pronounced cracks and brittleness. (2) The ballistic limits of the rivets exceeded that of one-half inch thick heat treated armor plate when tested with a caliber .30 M 1922 A.P. service velocity ammunition at a distance of 100 yards. The maximum depth of penetrated. The buttonhead, 3/4 inch straight diameter thank rivet with a minus tolerance of 1/32 inch is recommended. (4) The ballistic properties of heat treated rivets were not superior to those of rivets "as received." (5) Electric heating of rivets is recommended. (6) There was no appreciable decrease in hardness detected in the heat treated armor plate adjacent to the driven rivet. (7) The results of this investigation indicate that rivets, either made of SAE No. 2315 or SAE No. 4615 compositions, may be used in the construction of the armor plate shields under consideration.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 25, 1935
- Accession Number
- ADA953884
Entities
People
- E. Reed
- H. Carter