公开(公告)号：US3415911A

公开(公告)日：1968-12-10

申请号：US49746965

申请日：1965-10-18

Applicant: ATOMIC ENERGY AUTHORITY UK

Inventor： HENRY LLOYD

IPC: G21C21/02

CPC classification number: G21C21/02 ,  Y10S376/903 ,  Y10T29/49861

公开(公告)号：US3327892A

公开(公告)日：1967-06-27

申请号：US19973162

申请日：1962-06-04

Applicant: ATOMIC ENERGY AUTHORITY UK

Inventor： HENRY LLOYD ,  WILLIAM COBB HAROLD RALPH

IPC: B23K1/20 ,  G21C3/10

CPC classification number: G21C3/10 ,  B23K1/20 ,  B23K2201/06 ,  Y02E30/40

Abstract: 946,344. Brazing; welding by fusion. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 1, 1962 [June 13, 1961], No. 21260/61. Heading B3R. [Also in Divisions G1 and G6] A method of brazing an end closure member to a tubular member comprises producing a capillary film of braze metal between the members, the area of the joint being limited in two directions by spacing the members too far apart to allow capillary flow to take place. As seen in Fig. 1, the tube 1, in this case a stainless steel nuclear fuel can, has placed within its end a cup shaped cap 2 also of stainless steel. A ring of brazing material 4 is forced on to a peripheral shoulder 3 of the end cap, and the exterior of the ring 4 is a force fit in the tube 1. Brazing is achieved by placing the assembly in a vacuum chamber and heating to 1080-1100‹ C., when the brazing metal ring 4 melts and flows by capillary action to braze the end cap to the tube between the two annular shoulders 3, 5. The volume of the ring 4 is just sufficient to fill the capillary volume and form a small fillet about the shoulder 3. The brazed assembly is prepared for welding by rolling the cap to close the outermost gap 5 between the cap and tube. The edges are then sealed at 7 in Fig. 2 by a standard argon arc welding process. In a modification an annular hollow 8, Fig. 3, is left beneath the welded edges, and this hollow is filled with a tracer gas for checking the weld for leaks. The reservoir may be filled with tracer gas by incorporating this in the argon gas shield during the welding.

公开(公告)号：US3205174A

公开(公告)日：1965-09-07

申请号：US81467859

申请日：1959-05-21

Applicant: ATOMIC ENERGY AUTHORITY UK

Inventor： HOPE WHEATLEY CHRISTOPHER CAME ,  DENNIS GEORGE ,  HENRY LLOYD ,  JACK WILLIAMS

IPC: G21C3/64

CPC classification number: G21C3/64 ,  Y02E30/38 ,  Y10S376/901

公开(公告)号：US3194852A

公开(公告)日：1965-07-13

申请号：US3646760

申请日：1960-06-16

Applicant: ATOMIC ENERGY AUTHORITY UK

Inventor： HENRY LLOYD ,  RONALD WILLIAMS NEVILLE ,  HOPE WHEATLEY CHRISTOPHER CAME

IPC: C01G43/01 ,  C01G43/025 ,  G21C3/62

CPC classification number: C01G43/025 ,  C01G43/01 ,  G21C3/623 ,  Y02E30/38