Patent GB-1101455-A (GB)
Title: Process for explosive bonding of metals and product thereof
IPC: B23K20/08
Filed: 1965-03-05
Abstract: 1,101,455. Welding by pressure. ASAHI KASEI KOGYO KABUSHIKI KAISHA. 5 March, 1965 [9 March, 1964; 8 Dec., 1964], No. 9454/65. Heading B3R. In explosive bonding, a thin metal cladding layer is adhered to a supporting plate, the layer and plate are spaced from a base metal plate, i.e. a plate to be clad of greater thickness than the cladding layer and an explosive is detonated on the supporting or base metal plate to bond the thin metal layer to the base metal plate. In one embodiment a thin cladding layer 1, Fig. 1, is adhered by a binder 3 to a supporting plate 4 and the cladding layer is spaced from a baseplate 2, resting on a foundation 8, by supports 5. The plates 2 and 4 may be parallel or inclined slightly. An explosive 6 is detonated by a detonator 7 and the cladding layer is bonded to the base-plate 2. Magnetic or electrostatic force may be used to adhere the cladding layer to the supporting plate. A molybdenum sheet stuck by epoxy resin to a mild steel supporting plate is bonded to a mild steel baseplate using dynamite explosive and the mild steel supporting plate is removed after the bonding. In a further embodiment a cladding layer is adhered to a metallic or non-metallic supporting plate placed on a foundation block, a base metal plate is arranged above and spaced from the cladding layer and an explosive layer on the base metal plate is detonated to bond the layer to the base metal plate. A platinum foil is stuck to a polyvinyl chloride. supporting plate with epoxy resin and mounted on a mild steel foundation plate, a titanium plate is spaced above the platinum foil at an angle of 1 degree therewith and dynamite on the titanium plate is detonated to bond the platinum foil to the titanium plate. An electrolytic electrode is made from the composite plate. By the same method a platinum layer plated on a stainless steel plate is bonded to a titanium plate. In another embodiment a base metal plate 2, Fig. 3, to be clad is arranged between two supporting plates 4, 4<SP>1</SP> to which are adhered cladding layers 1, 1<SP>1</SP> with the layers 1, 1<SP>1</SP> facing the plate 2 and an explosive 6 on the upper supporting plate is detonated to bond the cladding layers to the base metal plate 2. The supporting plates 4, 4<SP>1</SP> are afterwards removed. Titanium supporting plates are plated with platinum and a zirconium base metal plate 2 arranged between the titanium plates is bonded to the platinum layers by detonating dynamite on the uppermost titanium plate. In a final embodiment a supporting plate to which coating layers are adhered is arranged between and spaced from base-plates and an explosive on the upper base-plate is detonated to bond the cladding layers to the base-plates. The supporting plate is afterwards removed. A titanium plate plated on both surfaces with platinum is arranged between two zirconium plates and dynamite on the upper zirconium plate is detonated to bond the platinum layers to the zirconium plates. The platinum layers were afterwards separated from the titanium plate. A titanium plate plated with nickel is placed on a rubber plate, a stainless steel plate with rubber thereon beneath a dynamite layer is spaced from the titanium plate and the dynamite detonated to bond the nickel to the stainless steel. Stainless steel may be bonded to gold or silver on titanium, zirconium may be bonded to rhodium or palladium on titanium and silver on polyvinyl chloride may be bonded to titanium.