What materials are mainly brazed in vacuum brazing furnaces?

Vacuum brazing furnace is mainly used for welding products that require high quality and easily oxidizable materials. It can brazing a wide range of materials. Let’s take a look at which materials vacuum brazing furnace mainly brazing!

A commonly used vacuum brazing furnace (click on the image to view product details)

1. Metal materials
Aluminum alloy: Aluminum alloy is widely used in the aerospace industry due to its advantages of low density and high specific strength. One of the ideal methods is to use vacuum brazing to manufacture complex aluminum structures. Eutectic aluminum silicon brazing material is a widely used aluminum brazing material in aluminum alloy brazing due to its good wettability, fluidity, corrosion resistance and machinability of brazed joints.
Silver based brazing material: Silver based brazing material is an alloy brazing material mainly composed of silver or silver based solid solution, which has the characteristics of low melting point, good wetting and filling performance, good strength, plasticity, conductivity, corrosion resistance, etc. Widely used for brazing most ferrous and non-ferrous metals except for aluminum, magnesium, and other low melting point metals. After adding active elements, it has excellent wettability for diamond, graphite and carbon, cubic boron nitride ceramic materials, etc.
Copper based brazing material: Copper based brazing material is composed of copper as the matrix and elements that can reduce the melting point and improve its comprehensive performance. Widely used in brazing of copper and copper alloys, carbon steel and cast iron, stainless steel, high-temperature alloys, hard alloys, etc., it has good conductivity, thermal conductivity, as well as good strength and corrosion resistance.
Nickel based brazing material: Nickel based brazing material is composed of nickel as the matrix and elements that can reduce melting point and improve its thermal strength. Widely used for brazing stainless steel, high-temperature alloys, iron-based alloys, iron-nickel based alloys, diamonds, hard alloys, C/C composite materials, etc., it has good high-temperature resistance, corrosion resistance, and good mechanical properties.
Cobalt based brazing material: Cobalt based brazing material is usually composed of Co Cr Ni as the base and other elements, which is more suitable for brazing cobalt based alloys.
Titanium based brazing materials: Titanium based brazing materials are widely used for vacuum brazing, diffusion brazing, and sealing of materials such as titanium, titanium alloys, tungsten, molybdenum, tantalum, niobium, graphite, ceramics, gemstones, etc.
Gold based brazing materials: The main alloy components of gold based brazing materials include nickel, copper, palladium, zinc, indium, germanium, tin, etc. It can be used for brazing copper, nickel, kovar alloy, stainless steel, etc. Suitable for brazing important components such as electric vacuum devices and aviation engines.
Palladium based brazing materials: Palladium brazing materials can be divided into three categories: graded brazing materials for the electronic industry, high-temperature heat-resistant brazing materials, and brazing materials with special properties. They are widely used in the electric vacuum industry, aerospace industry, and so on.

2. Non metallic materials and composite materials
Vacuum brazing furnaces can also be used for brazing non-metallic materials such as diamond, graphite, ceramics, cubic boron nitride, and composite materials. These materials can achieve good brazing effects after adding appropriate active elements.

3. Special materials
For some special materials, such as refractory metals such as beryllium and zirconium, vacuum brazing furnaces can also provide a suitable brazing environment to ensure welding quality.

Small vacuum brazing furnace (click on the picture to view product details)

In summary, vacuum brazing furnaces have a wide range of materials that can be brazed, covering almost all metals, some non-metals, and composite materials. They are more suitable for welding materials that require high quality and are prone to oxidation.Click to learn more Vacuum Furnace! Or click on online customer service to learn more about product information!