Abstract: A braze preform includes a filler metal, a flux in communication with the filler metal, and a luminescent material covering at least a portion of the filler metal. The luminescent material is equal to or less than 0.15% total weight of the braze ring. Further, the luminescent material includes at least one of a luminescent ink, a solvent, and a binder. The solvent may be one of a bromide-based solvent or a non-chlorine-based solvent. The binder may be an acrylic resin.

Abstract: A braze preform includes a filler metal, a flux in communication with the filler metal, and a luminescent material covering at least a portion of the filler metal. The luminescent material is equal to or less than 0.15% total weight of the braze ring. Further, the luminescent material includes at least one of a luminescent ink, a solvent, and a binder. The solvent may be one of a bromide-based solvent or a non-chlorine-based solvent. The binder may be an acrylic resin.

Abstract: A braze preform is provided that includes a filler metal and a luminescent material that covers at least a portion of the filler metal and that can luminesce when exposed to a black light. The luminescent material may include a luminescent ink and a solvent that are mixed together before being applied to filler metal. Presence of the braze preform may be determined using automated equipment by detecting luminescence of the braze preform with a sensor. A decision may be made on whether to advance a parts assembly for brazing based on the determination of presence or absence of the braze preform on such parts assembly.

Abstract: A braze preform is provided that includes a filler metal and a luminescent material that covers at least a portion of the filler metal and that can luminesce when exposed to a black light. The luminescent material may include a luminescent ink and a solvent that are mixed together before being applied to filler metal. Presence of the braze preform may be determined using automated equipment by detecting luminescence of the braze preform with a sensor. A decision may be made on whether to advance a parts assembly for brazing based on the determination of presence or absence of the braze preform on such parts assembly.

Abstract: A homogenous brazing material essentially consisting of relatively low amounts of silver and nickel together with copper, zinc, and other constituents is provided. The brazing material has a working temperature exceeding 630° F. and is preferably between about 1250° F. and 1500° F. The brazing material preferably has about 30 percent by weight of silver, about 36 percent by weight of copper, about 32 percent by weight of zinc, and about 2 percent by weight of nickel. The addition of nickel in the above-specified amount improves resistance against interface corrosion in aqueous solutions, aids in the strength of the alloy, and provides improved wettability on ferrous and non-ferrous substrates. The brazing material may also include a flux, such as a core or a coating.

Abstract: A homogenous brazing material essentially consisting of relatively low amounts of silver and nickel together with copper, zinc, and other constituents is provided. The brazing material has a working temperature exceeding 630° F. and is preferably between about 1250° F. and 1500° F. The brazing material preferably has about 30 percent by weight of silver, about 36 percent by weight of copper, about 32 percent by weight of zinc, and about 2 percent by weight of nickel. The addition of nickel in the above-specified amount improves resistance against interface corrosion in aqueous solutions, aids in the strength of the alloy, and provides improved wettability on ferrous and non-ferrous substrates. The brazing material may also include a flux, such as a core or a coating.

Abstract: A braze preform is provided that includes a filler metal and a luminescent material that covers at least a portion of the filler metal and that can luminesce when exposed to a black light. The luminescent material may include a luminescent ink and a solvent that are mixed together before being applied to filler metal. Presence of the braze preform may be determined using automated equipment by detecting luminescence of the braze preform with a sensor. A decision may be made on whether to advance a parts assembly for brazing based on the determination of presence or absence of the braze preform on such parts assembly.

Abstract: Systems and methods for brazing and soldering using low and non-silver based filler metals are described. The present invention includes methods and systems for brazing and soldering using copper based or bronze type filler metals in lieu of silver containing filler metals. The systems and methods provide advantages in that the bronze filler metals are substantially cheaper than silver alloy filler metals that are commonly used. Furthermore, the present invention uses a low-temperature, water-soluble flux that provides for easier cleanup after the completion of the brazing process. Additionally, the present invention provides significant advantages over traditional copper brazing in that it allows for a one-piece workflow and eliminates the need for large component pieces and filler metal inventories. This results in a significant decrease in capital expenditures and utility costs.

Abstract: A homogenous brazing material essentially consisting of relatively low amounts of silver and nickel together with copper, zinc, and other constituents is provided. The brazing material has a working temperature exceeding 630° F. and is preferably between about 1250° F. and 1500° F. The brazing material preferably has about 30 percent by weight of silver, about 36 percent by weight of copper, about 32 percent by weight of zinc, and about 2 percent by weight of nickel. The addition of nickel in the above-specified amount improves resistance against interface corrosion in aqueous solutions, aids in the strength of the alloy, and provides improved wettability on ferrous and non-ferrous substrates. The brazing material may also include a flux, such as a core or a coating.

Abstract: A brazing material wire preform suitable for use in brazing two components to one another. The preform is made from a length of wire having a core of flux material, and a longitudinal seam or gap that extends over the length of the wire. The seam is formed so that when heated, the flux material flows from the core and out of the seam. The length of wire is in the form of a loop having a certain circumference so that when the preform is heated, the flux material disperses uniformly from the circumference of the preform for evenly treating the surface of a component on which the preform is placed. The length of wire may include a silver alloy.

Abstract: A brazing material comprising a substrate metal and a second metal, e.g., an aluminum alloy and zinc alloy, is disclosed. The zinc alloy serves as a temperature depressant to reduce the resulting liquidus point of the resulting mixture substantially below 540° C. such that the resulting alloy may be used in applications where the base metals to be joined require a filler metal with a lower liquidus point. The brazing material may further include a flux, e.g., as a core or coating. The flux shall have an active temperature substantially lower than that of the liquidus point of the brazing material. The brazing material may be delivered in a variety of different forms such as strips, rings, washers, rods, wires, and other such preforms.

Abstract: Systems and methods for brazing and soldering using low and non-silver based filler metals are described. The present invention includes methods and systems for brazing and soldering using copper based or bronze type filler metals in lieu of silver containing filler metals. The systems and methods provide advantages in that the bronze filler metals are substantially cheaper than silver alloy filler metals that are commonly used. Furthermore, the present invention uses a low-temperature, water-soluble flux that provides for easier cleanup after the completion of the brazing process. Additionally, the present invention provides significant advantages over traditional copper brazing in that it allows for a one-piece workflow and eliminates the need for large component pieces and filler metal inventories. This results in a significant decrease in capital expenditures and utility costs.

Abstract: A wire preform suitable for use in brazing components to one another. The preform is made from a length of wire having a core of flux material, and a longitudinal seam or gap that extends over the length of the wire. The seam is formed so that when heated, the flux material flows from the core and out of the seam. The length of wire is in the form of a loop having a certain circumference so that when the preform is heated, the flux material disperses uniformly from the circumference of the preform for evenly treating the surface of a component on which the preform is placed. The length of wire may include a silver alloy.

Abstract: A wire preform suitable for use in brazing components to one another. The preform is made from a length of wire having a core of flux material, and a longitudinal seam or gap that extends over the length of the wire. The seam is formed so that when heated, the flux material flows from the core and out of the seam. The length of wire is in the form of a loop having a certain circumference so that when the preform is heated, the flux material disperses uniformly from the circumference of the preform for evenly treating the surface of a component on which the preform is placed. The length of wire may include a silver alloy.

Abstract: A wire preform suitable for use in brazing components to one another. The preform is made from a length of wire having a core of flux material, and a longitudinal seam or gap that extends over the length of the wire. The seam is formed so that when heated, the flux material flows from the core and out of the seam. The length of wire is in the form of a loop having a certain circumference so that when the preform is heated, the flux material disperses uniformly from the circumference of the preform for evenly treating the surface of a component on which the preform is placed. The length of wire may include a silver alloy.