Articles About materials
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Large hydraulic cylinders (LHCs) are integral components in the functioning of large machines in mechanically demanding, corrosive and abrasive environments, such as offshore drilling rigs. The materials utilized in these largescale hydraulic systems must deliver reliable performance throughout their expected lifecycle.
A reader wants to know how to figure out the fatigues strength, tooth root tension and other technical values of new, high-performance gear materials.
A reader asks: I've determined that a stainless steel bearing is the best option for my application. I'm being asked to specify the grade of stainless steel in my product design. I'm not sure which grade to select and specify. Can you help?
The development of a new, gas-carburized gear steel, necessitated by a customer-driven specification, has not only increased the power density in an existing gearbox design, but has done so without requiring any significant change to production processes or heat treatment equipment.
This paper is part 2 of 2 in a series that summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.
Excellence Awards Competition, sponsored by the Metal Powder Industries Federation, were recently announced at the POWDERMET2015 International Conference on Powder Metallurgy & Particulate Materials. Receiving grand prizes and awards of distinction, the winning parts are examples of PMâ™s precision, performance, complexity, economy, innovation and sustainability. The winning parts show how customers from around the world are taking advantage of PMâ™s design advantages.
Latest news from around the Industry
Seal design engineers and end users are continually seeking improved sealing systems and materials. This paper describes the potential of a new thermoplastic polyurethane (TPU) material to deliver improvements in pressure, speed and temperature capability, which are presented as comparisons to proven industry standard materials. Performance is demonstrated by virtue of test bench results of seals made from MDI-, PPDI- and NDI-based materials.
Bearings are an essential component in the majority of mechanical designs and equipment. It is important to consider the most effective materials when designing industrial machinery, especially in applications where water or other liquids are present. Many materials will be unable to overcome the challenges associated with operating in a wet or corrosive environment.
"Well begun is half done," a quote that most reference materials attribute to Aristotle, certainly applies when selecting mechanical power transmission products. A selection process that is well thought out at the start can ensure that the product selected will be properly sized and appropriate to the application at hand.
A critical problem for wind turbine gearboxes is failure of rolling element bearings where axial cracks form on the inner rings. This article presents field experience from operating wind turbines that compares the performance of through-hardened and carburized materials. It reveals that through-hardened bearings develop WEA/WECs and fail with axial cracks, whereas carburized bearings do not. The field experience further shows that a carburized bearing with a core having low carbon content, high nickel content, greater compressive residual stresses, and a higher amount of retained austenite provides higher fracture resistance and makes carburized bearings more durable than through-hardened bearings in the wind turbine environment.
Highlights from some of the gear, gear drive, power transmission component, software, materials and related exhibitors at Gear Expo 2017.
The availability of high-strength shaft materials, in combination with bearings with high carrying capacity, allows use of slimmer shafts. However, the modulus of elasticity remains the same, so seat design for bearings and gears must be given close attention.
A reader is looking for the best reference materials with formulas for gear measurements over pins.
Referencing a June 2014 Article, âœHigh Gear Ratio Epicyclic Drives Analysis,â by Dr. Alex Kapelevich: I have designed a small compound epicyclic gearbox with common planets. Sun = 10 teeth Planet = 14 teeth Ring Gear stationary = 38 teeth Ring gear output = 41 teeth profile shifted onto a 38 tooth pitch diameter. Carriers are simply cages for the planet alignment and location. According to your article, and according to my calculations and the prototype I have built, my inputto- output ratio is a reduction of 65.6:1. I am using a ~ VG1 viscosity grease and Nylatron materials for the gears and carriers.
During the past 10 years, the PM industry has put a lot of focus on how to make powder metal gears for automotive transmissions a reality. To reach this goal, several hurdles had to be overcome, such as fatigue data generation on gears, verification of calculation methods, production technology, materials development, heat treatment recipes, design development, and cost studies. All of these advancements will be discussed, and a number of vehicles with powder metal gears in their transmissions will be presented. How the transmissions have been redesigned in order to achieve the required stress levels while minimizing weight and inertia, thus increasing efficiency, will also be discussed.
During the qualification campaign of the NIRSpec (near-infrared spectrometer) instrument mechanism, the actuator could not achieve the expected lifetime that had been extended during the development phase. The initial design could not be adapted to the requested number of revolutions during that phase. Consequently the actuator needed to be modified so that the function of the mechanism would not be endangered or, by extension, the overall function of the NIRSpec instrument. The modification included a change of the overall actuator designâ”internal dimensions, tolerances, materials, lubrication and assembly processâ”while keeping the interface to the mechanism, mass and function.
In order for a company to be as efficient as possible, production, inventory and distribution components must be a top priority. A focused supply chain that gets the right materials to the right places in the allotted time frame encourages repeat business. These are concepts somewhat overlooked by many business executives in todayâ™s economy.
Few industries are experiencing change quite as fast as the packaging arena. Lighter-weight containers are being introduced to reduce costs and energy use, packaging is being redesigned to attract consumer attention and manufacturers are using fewer materials in an effort to address environmental concerns.
Dust, soil broken rock and other related materials that blanket planetary surfacesâ”known as regolithâ”have great potential to contribute to space observation research, but the physical properties of lunar regolith are unique and very difficult to excavate from a technical perspective. A group of students at the Missouri University of Science and Technology, dubbed the Lunar Miners, decided to step up to the plateâ”that is, by entering the 2008 NASA Regolith Excavation Challenge.
The obsolescence of materials and processes in the manufacture of traditional DC brush gearmotors has necessitated the development of an upgraded DC brush gearmotor.
This article will examine the major materials used to enhance balls to resist aggressive environments and help in selecting the right one.
While safety functions have been integrated into drives packages for some years now, the current trends are very exciting, from many angles. Today, a full complement of safety functions can be implemented at the front-end of a system design on all types of production machines, including printing, packaging, converting, materials handling and other equipment used throughout American industry.
Energy-challenged industries--and countries--can benefit from improved motor design and materials.
When a bearing is damaged, it is often removed from service and replaced before it reaches its full, useful and economical life. Advancements in bearing design, materials, bearing maintenance and repair methods have greatly improved the potential for and popularity of bearing repair as an effective way to extend the life of the bearing.
The manufacturing process begins in a limestone quarry. Mining methods such as ripping, dozing, drilling and blasting are commonly employed. Limestone provides the first essential component, calcium, for the anufacture of cement. Materials are transported to the crushing plant for further size reduction. Common methods of transport are trucks, loaders and belt conveyors.
News Items About materials
1 Kent Furst Named Manager of Freedonia Group's Polymers and Materials Group (February 4, 2015)
Kent Furst was recently promoted to manager of the polymers and materials group at The Freedonia Group, Inc. Furst has worked as ...
2 ABMA Schedules Bearing Materials Webinar (August 22, 2014)
The American Bearing Manufacturers Association (ABMA) has opened registration for a bearing materials webinar. This webinar is designed t...
3 Metallized Carbon Corp. Offers Carbon-Graphite Materials for Aircraft Shaft Seals (July 29, 2016)
Metallized Carbon Corporation offers a variety of materials for mechanical seals in aircraft shaft applications, including main shaf...
4 Swint Joins Interface Performance Materials as CEO (December 21, 2015)
Interface Performance Materials, Inc., a global manufacturer of advanced materials, sealing solutions, thermal and acoustic management sy...
5 Two Materials Experts Hired by M&P Lab (December 2, 2008)
The M&P Lab appointed Matthew J. Hallihan as business development manager and Edward Vesely as senior metallurgist to its Greenville,...
6 PICO Chemical's New Solvent Replaces Hazardous Materials for Gear Cleaning (August 8, 2007)
hemical Corp released its Pico Solv NPB as a new technology chlorine-free solvent cleaner that is manufactured specifically o replace haz...
7 MIM Materials Standard Released (April 23, 2009)
An addendum to the 2007 edition of MPIF Standard 35, "Materials Standards for Metal Injection Molded Parts," has been released....
8 High-Performance Materials Institute Plays Role in Deep Space Exploration (April 20, 2017)
Florida State University’s High-Performance Materials Institute and the Florida A&M University–Florida State University C...
9 Advanced Materials Development Corp. Offers New Material Options for Automotive Components (January 18, 2017)
Car and truck manufacturers are faced with the difficult task of significantly improving fuel economy while maintaining safety and compet...
10 KISSsoft Adds Plastic Materials Manager Function (December 6, 2017)
It is often the case that plastics manufacturers don't provide any data that is relevant for calculations when they supply their prod...