Sinter bonding using a bonding agent
AssigneeCaterpillar Inc.
InventorsGerald Albert Gegel, Eric Allen Ott
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Abstract
A method for joining powder metallurgy components, in particular, those made by metal injection molding is provided. The method includes providing a first and a second powder metallurgy compact each having a bonding surface and a bonding agent including a binder and fine particles. The bonding agent is placed between the bonding surfaces of the first and second powder metallurgy compacts. The first and second powder metallurgy compacts are then consolidated during a sintering cycle in which the first and second powder metallurgy compacts are joined by at least solid state diffusion of the fine particles.
Claims10
A joining method comprising:
- providing a first and a second powder metallurgy compact, wherein each powder metallurgy compact has a bonding surface;
- providing a bonding agent including a binder and fine particles;
- placing the bonding agent between the bonding surfaces of the first and second powder metallurgy compacts;
- consolidating the first and second powder metallurgy compacts during a sintering cycle;
- and
- joining the first and second powder metallurgy compacts during the sintering cycle by at least solid state diffusion of the fine particles.
A joining method comprising:
- providing a first and a second powder metallurgy compact, wherein each powder metallurgy compact has a similar composition and is formed by metal injection molding, and wherein each compact has a bonding surface;
- providing a bonding agent including a water-based binder and fine particles;
- placing the bonding agent between the bonding surfaces of the first and second powder metallurgy compacts;
- consolidating the first and second powder metallurgy compacts during a sintering cycle;
- and
- joining the first and second powder metallurgy compacts during the sintering cycle by forming a bond having an essentially similar composition to the first and second powder metallurgy compacts.
The method of claim,6, wherein the first and second powder metallurgy compacts include 17-4 ph stainless steel powder as a base metal.
Dependencies are inferred from the claim text.