METHOD OF PRODUCTION OF FLAT SUPERCONDUCTING ARTICLES BY EXPLOSION WELDING Russian patent published in 1998 - IPC

FIELD: mechanical engineering; production of articles from ceramic superconducting powders by energy of explosion. SUBSTANCE: mould 10 in form of steel cylinder with through channel is placed on steel base 9. Disk-type metal deflector is placed in cylinder. Striker 13 is accelerated in barrel 19 of powder propellant plant. Mass of deflector disk is 0.48-0.87 of specific mass of striker. Layer of porous transfer medium made of difficult to mould material of specific mass equal to 0.1-0.17 of specific mass of deflector is placed on upper end face of deflector. Thickness of layer of porous transfer medium 11 between base and lower end face of deflector is 2-3-fold thickness of container 1 with powder to be moulded. Container is heated to 850-950 C. Striker speed is 500-700 m/s. Ratio of specific mass of striker to sum of specific masses of container 1, electric furnace upper and lower heat insulating layers 18 and 15, respectively, and layers 17 and 14 of porous transfer medium is 0.9-1.6. EFFECT: possibility of production of superconducting articles with density close to maximum value at high hardness, enhanced manufacturability. 4 cl, 2 dwg