What’s sintering?

– And what are its advantages?

Create solid metal components through sintering

You might have asked yourself: What’s sintering? Here, we briefly explain this cost-efficient production process and what you can use it for.

The first step in making a sintered component is the compaction process where powder is formed into a component’s net shape by a pressing tool. The punches press the powder particles together using very high forces. The powder used for sintered components can be made of metal, ceramic, plastic and other various materials. Using iron-based metal powders is very common for sintered parts.

Sintering is a process where the compacted powder particles are joined to a solid mass of material using heat while the particles are still solid. Sintering of steels is done in a controlled atmosphere at high temperatures (1,120 °C is common) but below melting point of iron (1,538 °C). Even though the particles are not molten during the heating process in the sintering furnace, they still form strong metal connections. During the sintering process, material from the powder particles transports to points and areas where they are in contact with one another. This transport of material (called diffusion) creates so called sintering necks between particles. The sintering process gives controlled porosity and enhances properties such as strength and electrical conductivity.

High performance at low cost

So, what’s sintering good for? The compaction and sintering techniques are preferably used for metal components manufactured in large quantity, i.e. series of more than 10,000 pieces. Sintered components are commonly used in the automotive industry for making gears, planetary carriers and shock absorbers, but also for power tools and domestic components. The majority of sintered components produced are small and weigh 0.1-1.0 kg. However, technical developments enable sintered components weighing several kilograms per piece. What’s sintering’s main advantage? Well, the compaction and sintering production method offers high performance at lower total cost.

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Welcome to Höganäs Academy

Join Höganäs Academy and learn more about the capabilities and opportunities for pressed and sintered metal components.

In our online courses at Höganäs Academy, you get access to everything from an easy-to-read overview of what sintered components are and how they are produced to profound process know-how on how to optimise production efficiency and quality.

Learn more

Learn more how sintering can benefit your company

A small selection of applications that can benefit of the pressing and sintering technology:

ABS sensor ring | Balancer shaft gear | Bedplate insert | Belt pulley | Cam lobes | Cam phasing gear | Chain sprocket | Compressor plate | Crescent pump | Door lock mechanism | Electric power steering | Epicyclic Planetary ring gear | Epicyclic transfer case planetary carrier | Epicyclic transfer case sprocket | Hammer drill gear | HEGO sensor boss | Injector nozzle clamp | Injector yoke | Main crank bearing cap | Mirror boss | Office chair components | Oil pump gerotor | One-way-clutch race | Powder forged connecting rod | Power drill planetary gearset | Power transmission gears | Pressure plate | Reluctor ring | Seat belt retractor, recliner | Sewing machine lever | Shift finger | Shift fork | Shock absorber base valve | Shock absorber piston | Shock absorber rod guide | Stainless meat grinding knife and plate | Stainless steel exhaust flange | Steering column adjustment | Synchronizer clutch cone | Synchronizer hub | Synchronizer ring | Synchronizer sleeve | Thrust plate | Timing gear | Torque converter hub | Valve guide | Valve seat insert | Vane pump | Variable Valve Timing (VVT) rotor