Exploring the world of PM parts like gears to understand their applications


A Brief Guide to Powder Metallurgy | HVR MAG

Industrial systems and processes use various mechanical components or devices. Whether it’s a new design or redesign, you always prioritize a few attributes for them based on the application’s requirements. For example, most manufacturing facilities seek durable powder metallurgy (PM) components. Does it mean all these parts have to be equally long-lasting? As mentioned, it depends on the project type. A lawn mower may need a PM component that can be used for 400 hours, while a car may expect it to run for 200,000 miles or more. Since each element contributes differently under different scenarios, knowing your expectations about their performance is essential. It helps you determine their necessary attributes. 

Attributes of powdered metal parts

Some industries look for corrosion resistance in powder metallurgy parts. If you belong to the marine industry, you know that standard metal components erode faster due to regular exposure to salt water. However, marine-grade alloy materials can last longer because of their higher corrosion resistance. Some mechanical engineering applications prefer materials that can withstand abrasion or denting risks. They look for hardness and wear resistance. Tensile strength is another quality that is searched for in these parts. Such a trait keeps the component safe from deformation, even during pressure situations. That’s why many powdered metal parts use stainless steel. 

Even some industries require devices that offer excellent fatigue strength. If you look at the engine connecting rod, you will realize it experiences compression during the explosion cycle and tension while returning to its older position. Fortunately, many powdered metal parts feature superior fatigue strength to meet the application’s demands. Nevertheless, what PM part do you need for your application? If you need gears, search for powdered metal compositions. You will get variety and excellent performance.

Types of PM gears

You may need powder metallurgy gear for your automobile, power transmission, or industrial equipment facilities. These parts go through an entire cycle of processing to be ready for application, such as powder mixing, compaction, tooling, sintering, packaging, etc. They rarely need secondary operations like heat treatment or hardening. Typically, PM parts like these can be available in various tooth profiles to meet the application’s purpose. Tooth profile determines their load capacity, noise control, and efficiency. 

Some of the most straightforward designs in this context include spur gears. They can transmit power between two shafts efficiently through friction. While spur gears have straight teeth, another variety called helical gears boasts angular teeth, creating a helix-like shape. These provide better noise control, whether working between the non-parallel or parallel shafts. Their load capacity is also excellent. Other options are also accessible. Engineers who create them consider a few critical factors, such as noise generation, load distribution, manufacturing compatibility, and strength. 

Powder metallurgical parts have become popular because of their choice of materials, precise manufacturing, higher efficiency, and affordability. Their flexible designs and noise-damping strengths are added benefits. If you want consistent designs, choose your supplier carefully. Find an online store that targets the dominant consumer markets. They will align more with the market dynamics and ensure you get your orders on time.