The application relates to a low-silver solder for welding an electric vacuum device and a preparation method thereof, The low-silver solder for welding the electric vacuum device is characterized by consisting of Ag, Cu, Ni and a trace element R, wherein the low-silver solder comprises the following components in percentage by mass: 65-71% of Ag, 0-0.1% of Ni, 0-0.1% of trace element R and the balance of Cu; the trace element R consists of one or more of P, Sc, Be, Zr and La. A method of producing the low silver solder, characterized by the steps of: Ag, Cu except from copper foil and Ni are evenly preset in a smelting crucible, the trace elements wrapped by the copper foil are placed above main raw materials consisting of the Ag,Cu except from copper foil and Ni, then smelting and casting are carried out by adopting a vacuum induction smelting furnace, the vacuum degree of a furnace body reaches 10.sup.−1 Pa during smelting and casting, and finally a strip material or a wire materialis prepared by a post treatment process, which has the advantages of good processing performance, good fluidity, low air content in a welding line and excellent thermal stability.

The application relates to a low-silver solder for welding an electric vacuum device and a preparation method thereof, The low-silver solder for welding the electric vacuum device is characterized by consisting of Ag, Cu, Ni and a trace element R, wherein the low-silver solder comprises the following components in percentage by mass: 65-71% of Ag, 0-0.1% of Ni, 0-0.1% of trace element R and the balance of Cu; the trace element R consists of one or more of P, Sc, Be, Zr and La. A method of producing the low silver solder, characterized by the steps of: Ag, Cu except from copper foil and Ni are evenly preset in a smelting crucible, the trace elements wrapped by the copper foil are placed above main raw materials consisting of the Ag,Cu except from copper foil and Ni, then smelting and casting are carried out by adopting a vacuum induction smelting furnace, the vacuum degree of a furnace body reaches 10.sup.−1 Pa during smelting and casting, and finally a strip material or a wire materialis prepared by a post treatment process, which has the advantages of good processing performance, good fluidity, low air content in a welding line and excellent thermal stability.

Systems and methods for low-manganese welding alloys are disclosed. An example arc welding consumable may comprise: less than 0.4 wt % manganese; strengthening agents selected from the group consisting of nickel, cobalt, copper, carbon, molybdenum, chromium, vanadium, silicon, and boron; and grain control agents selected from the group consisting of niobium, tantalum, titanium, zirconium, and boron. The grain control agents may comprise greater than 0.06 wt % and less than 0.6 wt % of the welding consumable. The resulting weld deposit may comprise a tensile strength greater than or equal to 70 ksi, a yield strength greater than or equal to 58 ksi, a ductility (as measured by percent elongation) of at least 22%, and a Charpy V-notch toughness greater than or equal to 20 ft-lbs at −20° F. The welding consumable may provide a manganese fume generation rate less than 0.01 grams per minute during the arc welding operation.

Systems and methods for low-manganese welding alloys are disclosed. An example arc welding consumable may comprise: less than 0.4 wt % manganese; strengthening agents selected from the group consisting of nickel, cobalt, copper, carbon, molybdenum, chromium, vanadium, silicon, and boron; and grain control agents selected from the group consisting of niobium, tantalum, titanium, zirconium, and boron. The grain control agents may comprise greater than 0.06 wt % and less than 0.6 wt % of the welding consumable. The resulting weld deposit may comprise a tensile strength greater than or equal to 70 ksi, a yield strength greater than or equal to 58 ksi, a ductility (as measured by percent elongation) of at least 22%, and a Charpy V-notch toughness greater than or equal to 20 ft-lbs at −20° F. The welding consumable may provide a manganese fume generation rate less than 0.01 grams per minute during the arc welding operation.

A silver-copper cutting electrode assembly, and method of manufacture is provided with optimized attributes to allow for improved durability, integrity and manufacturability. An electrode has a silver tip portion which is brazed to a copper body portion where the silver portion and joint have a particular structural relationship.

A silver-copper cutting electrode assembly, and method of manufacture is provided with optimized attributes to allow for improved durability, integrity and manufacturability. An electrode has a silver tip portion which is brazed to a copper body portion where the silver portion and joint have a particular structural relationship.

Systems and methods for the manufacture of a solid wire using additive manufacturing techniques are disclosed. In one embodiment, a fine powdery material is sintered or melted or soldered or metallurgically bonded onto a metal strip substrate in a compacted solid form or a near-net shape (e.g., a near-net solid wire shape) before being turned into a final product through forming or drawing dies.

Systems and methods for the manufacture of a solid wire using additive manufacturing techniques are disclosed. In one embodiment, a fine powdery material is sintered or melted or soldered or metallurgically bonded onto a metal strip substrate in a compacted solid form or a near-net shape (e.g., a near-net solid wire shape) before being turned into a final product through forming or drawing dies.

A process of repairing a component includes identifying a void in a component; determining at least one approximate physical configuration of the void; inserting borescope into the component in order to view the void; providing a repair rod approximately equivalent to at least one of the least one approximate physical configuration of the void; inserting the repair rod into component; confirming insertion of the repair rod in the void; separating the repair rod to leave a repair plug in the void; and depositing braze paste over the repair plug in the void.

A process of repairing a component includes identifying a void in a component; determining at least one approximate physical configuration of the void; inserting borescope into the component in order to view the void; providing a repair rod approximately equivalent to at least one of the least one approximate physical configuration of the void; inserting the repair rod into component; confirming insertion of the repair rod in the void; separating the repair rod to leave a repair plug in the void; and depositing braze paste over the repair plug in the void.