Brazing and Diffusion Bonding for Injection Moulds and Dies
Use of modern joining methods is often an essential part of the manufacture of complex components, including those made from highly contrasting materials. These processes enable the utmost precision, purity and accuracy of the connections.
Diffusion bonding is a process for joining at least two materials by thermally activated solid state diffusion (no additional filler metal), compared to Brazing process where filler material is used.
Major applications for this type of furnace
• Plastic Injection moulds and dies
• Aluminum Pressure Die-casting dies
• Cooling plates
• Bonding of micro-reactors
• Bonding of high temperature alloys for aircraft industry
Principle of diffusion bonding for mould application: Laminated Object Manufacturing (LOM), where layers of mould in the form of plates made with all internal cooling path arrangement and bonded using this furnace with hydraulic pressing having precision force, precise temperature control and clean process atmosphere with high vacuum. No auxiliary material is used for joining. The bonded mould will have very homogeneous microstructure in the joining area.
This is to get conformal cooling for the moulds which help to increase productivity of about by 40% and to get better product quality. Obviously, this process is used for complicated parts.
Material of different combination can be diffusion bonded through this method.