Powder Metallurgy

Great instruction. Enjoyed.

GOODM VIDEO WELL EXPLAINED

The majority of parts we make are mainly copper. We manufacture metallic brake pads and clutch facings. Most parts are sintered under pressure in bell furnaces, but there are some belt sintered ones. 24 years experience.

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Lastly, I neglected to mention one added benefit of making something from powdered metal. Because it is porous, it will naturally retain lubricants, inhibiting corrosion and add valuable lubricating qualities. When the part heats up, the lubricant will tend to bleed out of the part to the surface. As it cools down again, the lubricant is drawn back in. In fact there is a line of self lubricating bronze and copper steel bearings readily available.

datzfast - yes, some magnets are made from powdered metal. Most people have seen powdered metal parts before and never even realized they were made this way.

And another advantage... the material can be brazed with the use of pressed brazing pellets. This allows bonding of mating components in the sintering process, further adding to the complexity of shapes achievable.

The alloys get their properties during sintering. Nickel or copper in the mix melt sooner but can't go anywhere easily because the iron is still quite close to solid. Infiltration of copper involves placing a pressed copper wafer on the part. Because the part is naturally porous, the copper melts long before the iron reaches the "critical" temperature and gets sucked into the part through capillary action. Copper infiltration increases density, hardness, tensile strength & improves machinability

desertblbluesman - been working in the industry for 24 years now, mfg. automotive and non-automotive parts. The material is always an alloy, and it is only called powder metallurgy. Its advantages are: 1. Complex shapes at a lower cost. 2. Tight tolerances can easily be achieved with machining or burnishing. 3. Material can be hardened or tempered. 4 Material can be copper infiltrated to increase hardness, tensile strength and improve machinability.

good q!

-hero