Effects of a Miscalculated Sintering Temperature to a Sintered Material

During the sintering process, as applied to powdered metals, a densely packed, cavity-shaped cluster of machine-pulverized particles plasticizes and diffuses. They do not melt. That’s a common misconception. Now, assuming an optimal sintering temperature is employed, the compacted grains experience the material diffusion cycle. They solidify. However, process temperatures can go awry. On knowing this […]

The Importance of Green Strength in Powder Metallurgy Process

As compacted metal powders coalesce, and this is before the sintering process, the compressed material is imbued with what’s known as “Green strength.” Remember, the metal particles haven’t bonded yet, haven’t fused with each other. However, the unsintered product is mechanically tough enough to handle machining operations. Those supplementary stages won’t damage the compacted workpiece, […]

Calculation of Sintering Temperature? How is it done?

Sintering technology is ruled by complex engineering equations. There are holding temperatures and material characteristics to regulate, plus a slew of phase transforming processes to regulate. Simply put, there are recipes to follow, and those recipes contain a whole lot of mathematically controlled elements. Nothing is left to chance. Of those many processing variables, sintering […]

What is Infiltration of Powdered Metals?

Imagine the powder metallurgical process as a series of illustrated steps. The powders and additives mix, then they’re formed and sintered. The process is clearly marked out in the various illustrations. Adding another illustrated block to the process, infiltration action strengthens powder metal components. Basically, the technique adds a second metal to the part, and […]

What are Powdered Metal Parts?

There’s a tendency to put self-lubricating bearings in their own applications spotlight. Alternatively, given the chance, curious would-be engineers should try giving other powdered metal parts their chance to shine. Granted, bearing technology owes a lot to powder metallurgy, but there is a whole other range of equally capable powder-fabricated products, all of which use […]

How Powdered Metals Convert for the Strength You Need

Historically speaking, powdered metals are recognized as moderately strong materials. They form relatively hard bearings and other self-lubricating items. By heat treating sintered metal parts, they become even tougher. In point of fact, the sintering process uses thermal energy and pressure, so some heat treated hardenability is applied during the production phase. Okay, this strength-conversion […]