Polybasic silver solder

Abstract

The invention relates to polybasic silver solder characterized in that the polybasic silver solder comprises, by weight, 12-28% of Ag, 37-49% of Cu, 1.0-3.0% of In, 0.5-2.5% of Ni, 0.001-0.1% of rare earth elements and the balance Zn, wherein the polybasic silver solder contains little precious metal of silver, and the content of the silver is reduced by about 20% compared with high-silver solder such as Bag40CuZnSn. Therefore, production cost is greatly reduced, and use amount of the precious metal of the silver is saved.

Description

technical field

[0001] The invention relates to a multi-component silver solder, which is suitable for the brazing of metal materials such as copper and copper alloy, carbon steel, hard alloy and stainless steel, and can be widely used in the brazing of refrigeration, machinery, electromechanical, four-way valves and other industries Among them, it belongs to medium temperature brazing materials. Background technique

[0002] When brazing between different metals such as copper and ferrous metals, because the brazing material has requirements on the wettability of the brazing base metal and the related mechanical properties of the brazing joint, most people choose brazing materials with a silver content greater than 40%. High silver solder. For example, the common high-silver solder BAg40CuZnSn is a solder widely used for brazing copper and carbon steel parts. However, with the rise in the price of non-ferrous metal raw materials, especially the precious metal silver, manu...

Examples

Embodiment Construction

[0018] The present invention will be described in further detail below through examples, and the following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0019] Example.

[0020] The multi-component silver solder of the present embodiment is made up of the following components by weight percentage: the Ag of 12-28%, the Cu of 37-49%, the In of 1.0-3.0%, the Ni of 0.5-2.5%, 0.001-0.1% of rare earth elements, and the balance is Zn. Wherein the rare earth element is one of lanthanum or cerium or a mixture thereof, the rare earth elements may all be lanthanum, the rare earth elements may all be cerium, or the rare earth element may be a mixture of lanthanum and cerium.

[0021] In this example, Ag uses IC-Ag99.99 in GB / T 4135-2002 "Silver" standard, Cu uses Cu-CATH-2 in GB / T 467-2010 "Cathode Copper" standard, and Zn uses GB / T 470- Zn99.995 in the 2008 "Zinc Ingot" standard, In99.993 in the YS / T 257-2009 "...

technical field

[0001] The invention relates to a multi-component silver solder, which is suitable for the brazing of metal materials such as copper and copper alloy, carbon steel, hard alloy and stainless steel, and can be widely used in the brazing of refrigeration, machinery, electromechanical, four-way valves and other industries Among them, it belongs to medium temperature brazing materials. Background technique

[0002] When brazing between different metals such as copper and ferrous metals, because the brazing material has requirements on the wettability of the brazing base metal and the related mechanical properties of the brazing joint, most people choose brazing materials with a silver content greater than 40%. High silver solder. For example, the common high-silver solder BAg40CuZnSn is a solder widely used for brazing copper and carbon steel parts. However, with the rise in the price of non-ferrous metal raw materials, especially the precious metal silver, manu...

Examples

Embodiment Construction

[0018] The present invention will be described in further detail below through examples, and the following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0019] Example.

[0020] The multi-component silver solder of the present embodiment is made up of the following components by weight percentage: the Ag of 12-28%, the Cu of 37-49%, the In of 1.0-3.0%, the Ni of 0.5-2.5%, 0.001-0.1% of rare earth elements, and the balance is Zn. Wherein the rare earth element is one of lanthanum or cerium or a mixture thereof, the rare earth elements may all be lanthanum, the rare earth elements may all be cerium, or the rare earth element may be a mixture of lanthanum and cerium.

[0021] In this example, Ag uses IC-Ag99.99 in GB / T 4135-2002 "Silver" standard, Cu uses Cu-CATH-2 in GB / T 467-2010 "Cathode Copper" standard, and Zn uses GB / T 470- Zn99.995 in the 2008 "Zinc Ingot" standard, In99.993 in the YS / T 257-2009 "...