Metal Sintering | Sintered Powder Metal Process

Sintering is a heat treatment for bonding particles in a solid state that is applied to a powder compact to increase a component's strength and integrity.

After compaction, neighboring powder particles are held together by cold welds, which give the compact sufficient “green strength” to be handled. At sintering temperature, diffusion processes cause necks to form and grow at these contact points.

Diffusion of atoms from one particle to another and between elements progresses at higher rates with increased temperature. The closer to the melting temperature of the material, the faster the sintering process progresses - and the better the final material properties.

High volume production of high-performance metal parts requires both breadth and depth of sintering knowledge combined with the capacity to maintain efficient operations.

The sintering process's complexity is fixed on the ability to control shrinkage and dimensional control. Through years of development in dimensional control of sintering, DSB Technologies is the metallurgical partner for industrial manufacturers with volume production targets who need the power of sintering without the risk of development bottlenecks.

DSB Technologies delivers unrivaled expertise, as well as state-of-the-art technology, to bring about effective outcomes for three powder metal forming technologies: press and sinter, metal injection molding, and metal 3D printing.

With more than 50 years' sintering expertise, in addtion to the world's largest capacity of high temperature sintering, DSB Technologies is able to support high performance parts for high volume production in powder metallurgy, metal injection molding, and metal 3D printing.

Materials & Benefits

The maximum temperature for conventional sintering can provide useful physical and mechanical properties for structural components in iron and low alloys steels, stainless steels, brass, bronze, copper, and aluminum. Many applications benefit from improved mechanical properties and moderate corrosion resistance with conventionally sintered 316 stainless steel. Process benefits for conventional sintering include: low material waste, solid dimensional control, and net shape or near net shape final dimensions.

Learn More About the Benefits of Sintering

Materials & Benefits

High temperature sintering (HTS) is particularly beneficial for stainless steels where densification occurs to reach non-interconnected surface porosity, greatly enhancing corrosion resistance - even exceeding that of comparable wrought steels. Also, ductility and toughness are improved with HTS in low alloy steels containing chromium, similar in composition to 4140 steel. Process benefits for HTS include improvements in corrosion resistance, high temperature oxidation resistance, ductility and toughness.

Learn More About High Temperature Sintering

Materials & Benefits

Liquid phase sintering is an important mechanism for the densification to near full density of tool steels such as M2 and T15. Tungsten heavy alloys such as tungsten-nickel-iron (radiation shielding) and tungsten-copper (thermal management) rely on liquid phase sintering for densification, as well as the cemented carbides for cutting tools (tungsten carbide-cobalt). Liquid Phase Sintering poses benefits for tool steels, which can reach near full density to achieve wrought-like properties for high performance applications.

Learn More About Liquid Phase Sintering

ON-DEAMND WEBINAR

Sintering in Powder Metallurgy

Learn how conventional and high temperature sintering impact common PM material groups like Stainless Steels, Soft Magnetic Alloys, and Low Alloy Steels.

Watch On Demand