Accession Number : AD0478167


Title :   HIGH ENERGY IMPACT FORMING PROGRAM.


Descriptive Note : Final rept. 8 Jun 61-31 Mar 65,


Corporate Author : GENERAL DYNAMICS CORP AVENEL N J


Personal Author(s) : Stratton ,Frank A ; Sunafrank,William O


Report Date : Sep 1965


Pagination or Media Count : 383


Abstract : The purpose of this 'High Energy Impact Forming' program was to design, fabricate and evaluate a high energy impact rubber forming machine; and to determine, by direct comparison, the advancements of this method in relation to the existing rubber forming capabilities. The 20,000 psi rubber pad pressure developed by the high energy impact rubber forming machine resulted in an impressive increased formability on shrink, draw and beading operations of high strength sheet metal materials. Rubber life for hot forming at 1100 F. is increased up to 18 times. Effects on mechanical properties are comparable to those created by any other fabrication process. A prototype high energy rate impact rubber forming machine was designed, built and tested. At impact, the machine develops a pressure of 20,000 psi over a rubber pad 24 inches in diameter at an impact velocity in excess of 60 feet per second. Definite forming improvements were demonstrated and the short contact time of part to rubber head during hot forming operation allows greatly increased rubber pad life. (Author)


Descriptors :   *MATERIAL FORMING , *METAL FORMING PRESSES , SHEETS , RUBBER , PANELS , ALUMINUM ALLOYS , STAINLESS STEEL , NICKEL ALLOYS , TITANIUM ALLOYS , NIOBIUM ALLOYS , HOT WORKING , HIGH PRESSURE , ENERGY , VELOCITY , EXPLOSIVE FORMING , IMPACT SHOCK , DIES , HYDRAULIC PRESSES , AIRFRAMES , HEAT RESISTANT ALLOYS , HEAT RESISTANT METALS , CHROMIUM ALLOYS , COBALT ALLOYS , MECHANICAL PROPERTIES , BIBLIOGRAPHIES


Subject Categories : Fabrication Metallurgy
      Elastomers and Rubber
      Machinery and Tools


Distribution Statement : APPROVED FOR PUBLIC RELEASE