Nowadays, most metal powder parts are manufactured by pressing and sintering. It is a relatively new technology discovered around a century back. Otherwise, forging and casting were the standard methods. The new powder sintering process started late in the 19th century alongside the emergence of electricity. Electric arcs were replaced by sophisticated wire filaments, creating a need for long-lasting tungsten wire. Tungsten requires extreme heat to melt, leading to the adoption of sintering. In the 1920s, manufacturers started making self-lubricating bushings and cutting tools with metal powders. In the 1930s, metal powder-based oil pump gears and magnetic materials emerged. The automobile sector witnessed a boom post-WWII, emphasizing the need for a supply of sintered metal components.
The constant demand and innovation in the metalworking field contributed to the immense popularity of powder metallurgy (PM). This specific manufacturing industry has grown so much today that most other automobile, motorcycle, healthcare, and tooling giants depend on it to meet their demands. The automobile is one of the largest consumers of PM parts, though. Let’s tour different components produced through this technique for some quick knowledge.
Types of metal powder parts
Powder metallurgy components are used in different industries, but most can be grouped into four distinct categories: gears, bearings, assemblies, and cams.
- Gears
PM gears can be made with carbide dies, ensuring durability and precision. Due to their closed porosity, these gears offer excellent noise insulation. They can be fixed with ratchets, cams, and other components. Some materials also offer better tooth densities. However, manufacturers have to consider various factors to make high-performing gears. Many fabrication techniques cannot match this.
- Assemblies
With advanced PM technology, engineers can join different metal powder parts to build a unit. The flexibility of the powdered metal also allows them to combine various materials in assemblies. Think of the combination of a ferrous structure with a bronze bearing, for instance. Conventional practices can be embraced for this outcome, including pressing, bolting, staking, welding, soldering, and sintering. Steel parts can be bonded with copper during sintering.
- Bearings
These powder metallurgy parts are famous for their self-lubricating and controlled porosity traits. In this category, you find flanged bearings, plain bearings, round bearings, and thrust washers. These products are made under a strictly controlled operating environment, focusing on oiling, cooling, and chromium-plated shafts to strengthen their permissible load capacity. Otherwise, high speeds, shock treatment, start-stop operation, and similar repeated events can affect their permissible load.
Cams
A cam is a mechanical sliding or rotating piece often used in a moving shaft or wheel. PM cams have an intricate consistency and smooth surface. They can last longer than a shaft. These components can be shaped in dies or punch faces, depending on the requirement.
Do you need PM parts for your manufacturing unit? Contact a reliable metal powder product manufacturing company with a global reach and an extensive catalog. You can trust them and their methods to satisfy industry standards concerning metal powder parts. Plus, you can rest assured that bulk items will be delivered within the stipulated delivery time. Quality and customer service can be top-notch. Do a background check of the manufacturer or supplier for inner satisfaction before placing your order.