High strength copper brazing material can be used to braze hard alloys, stainless steel, steel and other base materials

Hard alloy is a highly productive tool material with high hardness, strength, wear resistance, and good red hardness. There are various types of brazing materials used in hard alloy tools, with copper based brazing materials and silver based brazing materials being the most commonly used.

1、 Pure copper brazing material and copper based brazing material are commonly used brazing materials for brazing hard alloys.

The joint plasticity of pure copper brazing material is high, but the strength of the joint rapidly decreases when the working temperature is above 320 ℃, so it is not suitable for working at high temperatures.

The melting temperature of copper based brazing materials is lower than the purity, and most of them are based on copper zinc alloys, with the addition of elements such as manganese and nickel to improve the strength of the weld seam. At 320 ℃, they also have high strength.

High strength brazing materials for hard alloys, stainless steel, and steel base materials

Copper manganese nickel brazing material is suitable for the connection of hard alloy tools. Manganese and nickel elements are added to the alloy, which can improve the wettability and strength of the brazing material on the hard alloy, while reducing the melting point and liquid phase point to 950 ℃.

Can replace expensive 40% silver and 50% silver based brazing materials.

The form of solder: copper manganese nickel solder strip, copper manganese nickel solder paste.

High strength copper manganese nickel brazing material, copper manganese nickel welding strip,

The comprehensive performance of silver based brazing materials is better than that of copper based brazing materials, and manganese nickel is usually added to improve the wettability of brazing materials, increase the strength of welds, and increase the working temperature of joints. The brazing temperature of silver based brazing materials is usually lower than that of copper based brazing materials.

For hard alloy brazing with working temperatures above 500 and high joint strength requirements, nickel based brazing materials and cobalt based brazing materials can be selected.

2、 Suitable brazing heating methods for copper manganese nickel brazing materials

Induction brazing, flame brazing, furnace brazing, vacuum brazing furnace (partial pressure can be used due to the volatilization of manganese).

Industries suitable for copper manganese nickel brazing materials

Mining tools for the coal industry include cutting teeth, pickaxes, shield tunneling machine tools, machining alloy tools, molds, measuring tools, wear-resistant tools, which have good embedding and sintering properties for diamond single crystals and composite sheets, and have good strength.

Before brazing, the surface of the base material must be cleaned thoroughly, and the brazing joint should be designed to ensure the gap of the brazing joint. The brazing temperature is recommended to be 30-50 ℃ above the liquidus, and adjusted according to the brazing method.

High strength copper manganese nickel brazing material, copper manganese nickel welding strip,

Industry involved: refrigeration, air conditioning, electronics, automotive industry, aerospace, cutting tools, high-speed trains, hydraulic pipelines, medical and other industries.