Once again, Industrial Heating will focus on a specific topic on our website and list the articles that are most popular amongst our readers. This time we’ll take a look at Heat- and Corrosion-Resistant Materials/Composites. We hope you find this information useful, particularly if you have an interest in this topic.
These rankings are based on page views from Dec. 3, 2017 through Dec. 3, 2018, exactly one year. Articles are listed in descending order, starting with #6 and ending with #1. The following articles cover a range of processes – from deep cryogenics to sintering – and highlight heat-resistant alloys, cooling towers and heat-treat rack material.
Selecting an Appropriate Heat-Resistant Alloy
Originally published in 2014, this article is still a hit. Provided by Marc Glasser of Rolled Alloys, this article introduces the reader to a broader understanding of many of the factors to consider when selecting an alloy of construction for a heat-resistant application.
The first factor in choosing a heat-resistant alloy for a particular application is its temperature limit. In order to obtain the desired service life, however, there are many additional factors that must be taken into account in order to succeed in your application. Failure to consider these factors can result in premature failures and, in some instances, lead to serious safety risks for your employees.
Read this article here: www.industrialheating.com/hralloy.
Deep Cryogenic Treatment for Marine and Oil-and-Gas Applications
This article, which was just published in December 2018, was popular enough for #5 on our list. It explores the benefits of deep cryogenics, why the technology stalled and where it can be next used by the oil-and-gas and marine communities. Deep cryogenic treatment is a cold-temperature process that reduces corrosion, wear, fracture and fatigue in most metal items by 20-70%.
Cryogenic treatment of metal offers breakthrough reductions in wear and corrosion to users of marine components – lowering maintenance and capital replacement cost and increasing operational uptime. The technology has languished in the starting gate since WWII, however, and only recently emerged as a way to address wear and corrosion in post-heat-treated items.
This article can be found at www.industrialheating.com/DCT.
Corrosion-Resistant Plastic Cooling Towers Cut Costs
For operations using extreme heat, engineered plastic cooling towers provide cooling and can outlast traditional alternatives. Provided by Delta Cooling Towers, this article was published in March 2018 and focuses on sintering.
Few industries rely on the application of heat as much as the sintering process in powder-metal manufacturing. With temperatures in the high-heat section of a sintering furnace reaching several thousand degrees Fahrenheit, the parts must be cooled dramatically before being handled by operators.
The most common type of cooling towers is constructed of galvanized steel. For sintering, however, these galvanized towers are unfortunately susceptible to corrosion and rust problems that can require ongoing maintenance.
You can read this feature at www.industrialheating.com/epct.
Heat-Treat Rack Material Selection Based on Thermal Performance
The choice of heat-treat rack material is important for every heat-treat operation, whether independent or captive. The selection of rack-material composition is typically dictated by the operating conditions of the specific heat-treating process involved. The furnace operator must select materials capable of performing within these conditions, and the decision often balances performance against purchase price.
Another oldie, Carlisle Brake & Friction provided this article in December 2015, but it still ranks #3 in this topic. Three common rack materials for heat-treat applications where temperatures exceed 815°C (1500°F) are heat-resistant steel alloys, molybdenum alloys and carbon-carbon composites. A table included in the feature displays a variety of relevant properties for these three materials.
Find this article here: www.industrialheating.com/rackmaterial.
Considerations for Choosing the Optimum Fixtures
Marc Glasser of Rolled Alloys appears for the second time on our list with this article from September 2018. Did you know that there are many types of heat-treating fixtures, trays, racks, boxes and other part holders in the market today?
How is the heat treater supposed to decide which fixture is best? There is no easy answer. It is usually a combination of cost and design. Often, only initial cost is considered, and life-cycle costs are overlooked. Cost per pound of heat-treated product is a concept that gets almost no thought, but it should be a very important consideration. This article includes a table that details the pros and cons of cast and wrought materials.
Want to learn more? Read it at www.industrialheating.com/fixt.
Engineering Strength: Oxide Dispersion for Bulk Alloys
This article was provided by frequent contributor Carnegie Mellon University in December 2017. Researchers at the school are answering the need for heat-tolerant materials by developing a new way to strengthen metals using oxide particles. Perhaps interest in this research propelled this article to the top spot.
Metals like iron and aluminum make up much of the modern world around us – from cars to wind-energy turbines –
because they are strong, lightweight and cost-efficient materials. But as the heat is turned up on these metals, their mechanical properties and strength can be compromised. The need, therefore, continues to grow for advanced structural materials that can withstand high temperatures for applications in expanding industries like power generation and chemical processing.
The #1 article on our list can be read in its entirety at www.industrialheating.com/oxides.
There you have it – the six most-read articles on our website pertaining to Heat- and Corrosion-Resistant Materials/Composites (HCRMC). Our hope is that you take the time to check these articles out for yourself … if you haven’t already.
To search for additional articles under the HCRMC topic in our archives, visit www.industrialheating.com/HCRMC.