Thermo-compression

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  • Thermo-compression

Advantages of thermo-compression bonding Flatness can be attained.

  • No strain is produced.
  • No gap is formed between respective plate thicknesses.
  • Surface is activated to keep it clean.
  • Mass production can be achieved.
Advantages of thermo-compression bonding Flatness can be attained.

Thermo-compression bonding diffused junction

Principle

A metal bond is formed when two metal surfaces approach each other within atomic distance. This means that two metals can be bonded in principle by bringing them close to each other. Based on this principle, diffusion bonding is used to join metallographically two metal surfaces in the solid-phase state by heating and compression.

Principle

Models of diffusion bonding mechanism

Models of diffusion bonding mechanism

Characteristics

It is customary to apply adhesives or to spot-weld when pasting one metal to the other. This method, however, suffers from (1) peeling at high temperatures, (2) difficulty in cleaning, and (3) formation of a gap after spot welding. The technique of thermo-compression bonding, pioneered by our company, solves these problems.

Available raw materials

  • Stainless steel + stainless steel: SUS304 + SUS304
  • Alloy 42 + alloy 42: SUS430 + SUS430
  • Invar + invar

Bonding examples

Bonding examples

Conditions

Same expansion coefficient

Any plate, etched, laser-applied or wire-cut, can be bonded even when different processing methods are applied, by bonding on the flat surface. Two to four holes are required for positioning. Please consult us separately if positioning holes are not allowed.

Number of plates bonded and plate thickness

Please contact us since the size of a plate depends on thickness and shape.