curved portions independently from the one exerted on the flat central portion when said mandrel is pushed against the inductor block application_number US 95222978 A description turning now to the drawings fig1 shows a main inductor 1 of the brazing press which makes it possible to join together two plates the first of which comprises the bottom of a stamped workpiece or pressing 2 which is usually of stainless steel and the second is a plate made of a good heat conducting material designed to form a heat diffusing cladding or cover 3 which consists for example of aluminum or copper which are to be joined together by the fusion of a brazing flux not shown of a metal alloy generally having a melting point slightly lower than that of the two metals having the lower fusion point i e aluminum or one of its alloys inserted between the two plates 2 and 3 the pressing 2 is supported by a mandrel comprising a first and a second member the first member 4 is fixed to a rod 14 of a press jack or ram 140 mounted on the frame of the press and consists of metal whereas the second member 5 which is designed to come into contact with the bottom of the pressing 2 which is to receive the heat diffusing cladding 3 secured thereto by brazing is.