Knowledge How does sintering work in metals? 4 Key Stages Explained
Author avatar

Tech Team · Kintek Solution

Updated 1 month ago

How does sintering work in metals? 4 Key Stages Explained

Sintering in metals is a process that involves the consolidation of metal particles into a solid mass using heat and pressure, without causing the material to melt.

This process enhances the structural integrity, strength, and other properties of the metal, making it suitable for various applications.

How does sintering work in metals? 4 Key Stages Explained

How does sintering work in metals? 4 Key Stages Explained

1. Initial Stage

The sintering process begins by heating the metal powders in a furnace.

The temperature is raised to a level that induces the formation of a martensitic crystal structure, which is a hard, brittle form of steel.

This stage does not involve complete melting of the particles; instead, the particles are compacted, often with the help of external pressure or through methods like cold welding.

This initial consolidation provides enough strength for the particles to withstand further processing.

2. Intermediate Processes

In the intermediate stages, the density of the particles increases as they begin to merge.

This is typically achieved through methods such as transient liquid phase sintering or permanent liquid phase sintering.

In transient liquid phase sintering, a material with a lower melting point, such as copper, is added to the metal powder.

When heated, the copper melts and bonds with the metal, enhancing the overall strength of the material.

In permanent liquid phase sintering, materials like carbides are added, which flow into the gaps and cracks, further strengthening the bond between particles.

3. Final Stages

The final stages of sintering involve the introduction of a liquid and binder additive.

This additive helps fill any remaining pores in the metal, improving its overall density and strength.

The metal is then cooled, resulting in a solid, dense structure that retains the shape and dimensions of the original compacted powder.

4. Applications and Benefits

Sintering is used to create a variety of metal products, including structural steel parts, porous metals for filtering, tungsten wiring, and cutting tools.

The process is particularly beneficial for producing parts with complex geometries or internal features that would be challenging to manufacture using traditional methods.

Additionally, sintering is efficient and can be scaled for large-scale production, making it an economically viable option for many industries.

Continue exploring, consult our experts

Ready to elevate your metal manufacturing capabilities? Discover the power of sintering with KINTEK SOLUTION.

Our precision-engineered metal sintering solutions ensure the creation of strong, durable parts without melting, perfect for intricate geometries and complex designs.

Explore our comprehensive range of equipment and accessories today, and unlock the full potential of your metal products.

Your path to high-quality, cost-effective production starts here!

Related Products

Vacuum pressure sintering furnace

Vacuum pressure sintering furnace

Vacuum pressure sintering furnaces are designed for high temperature hot pressing applications in metal and ceramic sintering. Its advanced features ensure precise temperature control, reliable pressure maintenance, and a robust design for seamless operation.

Small vacuum tungsten wire sintering furnace

Small vacuum tungsten wire sintering furnace

The small vacuum tungsten wire sintering furnace is a compact experimental vacuum furnace specially designed for universities and scientific research institutes. The furnace features a CNC welded shell and vacuum piping to ensure leak-free operation. Quick-connect electrical connections facilitate relocation and debugging, and the standard electrical control cabinet is safe and convenient to operate.

Vacuum tube hot press furnace

Vacuum tube hot press furnace

Reduce forming pressure & shorten sintering time with Vacuum Tube Hot Press Furnace for high-density, fine-grain materials. Ideal for refractory metals.

Vacuum hot press furnace

Vacuum hot press furnace

Discover the advantages of Vacuum Hot Press Furnace! Manufacture dense refractory metals & compounds, ceramics, and composites under high temp and pressure.

Mesh belt controlled atmosphere furnace

Mesh belt controlled atmosphere furnace

Discover our KT-MB mesh belt sintering furnace - perfect for high-temperature sintering of electronic components & glass insulators. Available for open air or controlled atmosphere environments.

Vacuum molybdenum wire sintering furnace

Vacuum molybdenum wire sintering furnace

A vacuum molybdenum wire sintering furnace is a vertical or bedroom structure, which is suitable for withdrawal, brazing, sintering and degassing of metal materials under high vacuum and high temperature conditions. It is also suitable for dehydroxylation treatment of quartz materials.

9MPa air pressure sintering furnace

9MPa air pressure sintering furnace

The air pressure sintering furnace is a high-tech equipment commonly used for the sintering of advanced ceramic materials. It combines vacuum sintering and pressure sintering techniques to achieve high-density and high-strength ceramics.

Spark plasma sintering furnace SPS furnace

Spark plasma sintering furnace SPS furnace

Discover the benefits of Spark Plasma Sintering Furnaces for rapid, low-temperature material preparation. Uniform heating, low cost & eco-friendly.

High temperature debinding and pre sintering furnace

High temperature debinding and pre sintering furnace

KT-MD High temperature debinding and pre-sintering furnace for ceramic materials with various molding processes. Ideal for electronic components such as MLCC and NFC.

Chairside dental sintering furnace with transformer

Chairside dental sintering furnace with transformer

Experience top-notch sintering with Chairside Sintering Furnace with Transformer. Easy to operate, noise-free pallet, and automatic temperature calibration. Order now!

High Purity Iron (Fe) Sputtering Target / Powder / Wire / Block / Granule

High Purity Iron (Fe) Sputtering Target / Powder / Wire / Block / Granule

Looking for affordable Iron (Fe) materials for laboratory use? Our range of products includes sputtering targets, coating materials, powders, and more in various specifications and sizes, tailored to meet your specific needs. Contact us today!

600T vacuum induction hot press furnace

600T vacuum induction hot press furnace

Discover the 600T Vacuum Induction Hot Press Furnace, designed for high-temperature sintering experiments in vacuum or protected atmospheres. Its precise temperature and pressure control, adjustable working pressure, and advanced safety features make it ideal for nonmetal materials, carbon composites, ceramics, and metal powders.

High Purity Iridium (Ir) Sputtering Target / Powder / Wire / Block / Granule

High Purity Iridium (Ir) Sputtering Target / Powder / Wire / Block / Granule

Looking for high-quality Iridium (Ir) materials for laboratory use? Look no further! Our expertly produced and tailored materials come in various purities, shapes, and sizes to suit your unique needs. Check out our range of sputtering targets, coatings, powders, and more. Get a quote today!

Silicon Carbide (SIC) Ceramic Plate

Silicon Carbide (SIC) Ceramic Plate

Silicon nitride (sic) ceramic is an inorganic material ceramic that does not shrink during sintering. It is a high-strength, low-density, high-temperature-resistant covalent bond compound.


Leave Your Message