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- W4239393395 abstract "A total of 449 experimental welds have been made to date. Partial penetration welding procedures capable of producing defect-free, 4-inch deep welds have been developed in the horizontal position. The travel speed that can be acceptably used for partial penetration welding of 2 1/4 Cr-1 Mo is larger for 6-inch thick plate than for 8-inch thick plate. Although defect-free welds can be made with soft vacuum conditions, hard vacuum conditions produce the most reliable performance. A procedure for welding an 8-inch thick joint has been developed. A small test plate was welded, radiographed, and cross sectioned and found to be acceptable. A large 8-inch thick test plate was welded and found to contain porosity. Difficulties in uniformly moving this large plate appear to be responsible for the porosity encountered. A mechanical modification to the welding equipment is being made and the large plate will be welded again. 3 figures." @default.
- W4239393395 created "2022-05-12" @default.
- W4239393395 creator A5017345724 @default.
- W4239393395 date "1979-01-01" @default.
- W4239393395 modified "2023-09-26" @default.
- W4239393395 title "Development of automated welding processes for field fabrication of thick-walled pressure vessels: electron beam method. Seventh quarterly report, April 1-June 30, 1979. [8-in. thick 2 1/4 Cr-1 Mo plate]" @default.
- W4239393395 doi "https://doi.org/10.2172/5785798" @default.
- W4239393395 hasPublicationYear "1979" @default.
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