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Articles About vacuum
The October 2011 issue of Gear Technology featured the article “Low-Distortion Heat Treatment of Transmission Components,” which covered the combination of low-pressure carburizing and high pressure gas quenching in an automotive environment. Here, heat treating expert Dan Herring explains why oil quenching is an appropriate choice for many applications.
ALD-Holcroft Vacuum Technologies Co. will host a two-day technical symposium at the Henry Ford Museum in Dearborn, Michigan September 23– 24, 2008.
Heat treat alternative offers advantages over conventional methods.
This paper introduces new process developments in low-pressure carburizing and carbonitriding using either high-pressure gas quenching or interrupted gas quenching.
The complete Events section from January/February 2005, including coverage of a vacuum carburizing conference.
What gear material is suitable for high-temperature (350 – 550 degree C), high-vacuum, clean-environment use?
Acetylene with DMF solvent enables benefits of low-pressure vacuum carburizing.
The proper control of distortion after thermal treatment of powertrain components in the automotive industry is an important measure in ensuring high-quality parts and minimizing subsequent hard machining processes in order to reduce overall production costs.
Open any heat treating journal today and you’re certain to find multiple references (articles, technical papers and/or advertisements) promoting low-pressure carburizing (LPC). The uninformed might breeze by these references thinking it’s the next flash-in-the-pan, but unlike in the past, this time the process has legs.
High demands for cost-effectiveness and improved product quality can be achieved via a new low pressure carburizing process with high pressure gas quenching. Up to 50% of the heat treatment time can be saved. Furthermore, the distortion of the gear parts could be reduced because of gas quenching, and grinding costs could be saved. This article gives an overview of the principles of the process technology and the required furnace technology. Also, some examples of practical applications are presented.
In recent years, improvements in the reliability of the vacuum carburizing process have allowed its benefits to be realized in high-volume, critical component manufacturing operations. The result: parts with enhanced hardness and mechanical properties.
The heat treatment processing of powder metal (PM) materials like Astaloy requires four steps -- de-waxing, HT sintering, carburizing and surface hardening -- which are usually achieved in dedicated, atmospheric furnaces for sintering and heat treat, respectively, leading to intermediate handling operations and repeated heating and cooling cycles. This paper presents the concept of the multi-purpose batch vacuum furnace, one that is able to realize all of these steps in one unique cycle. The multiple benefits brought by this technology are summarized here, the main goal being to use this technology to manufacture high-load transmission gears in PM materials.
The data discussed in this article was taken from an upright vacuum cleaner. This was a prototype cleaner that was self-propelled by a geared transmission. It was the first time that the manufacturer had used a geared transmission in this application.
QuesTek Innovations LLC is applying its Materials by Design computational design technology to develop a new class of high-strength, secondary hardening gear steels that are optimized for high-temperature, low-pressure (i.e., vacuum) carburization. The new alloys offer three different levels of case hardness (with the ability to “dial-in” hardness profiles, including exceptionally high case hardness), and their high core strength, toughness and other properties offer the potential to reduce drivetrain weight or increase power density relative to incumbent alloys such as AISI 9310 or Pyrowear Alloy 53.
News Items About vacuum
1 Solar Donates Vacuum Furnace to ASM (March 26, 2013)
In commemoration of ASM International’s 100th anniversary, Solar Atmospheres Inc. is donating a vacuum furnace to ASM for use in it... Read News
2 Solar Delivers Custom Vacuum Furnace (January 3, 2014)
Solar Manufacturing recently delivered and successfully started-up a uniquely designed vacuum furnace required by a major specialized coa... Read News
3 Solar Receives Nadcap Merit Status for Vacuum Heat Treating (January 29, 2014)
Solar Atmospheres of Western PA (SAWPA) announces that it has been awarded Nadcap Merit status for vacuum heat treating and brazing of me... Read News
4 Solar Releases Vacuum Furnace Booklets (February 21, 2014)
Solar Manufacturing, makers of leading-technology vacuum heat treat furnaces, recently released on their website and in printed format tw... Read News
5 Joint Venture for AFC Holcroft and ALD Vacuum (April 19, 2005)
AlD Holcroft of Wixom, MI, and ALD Vacuum Technologies GmbH of Hanau, Germany, have formed a joint venture called Joint Venture ALD Vacuu... Read News
6 VAC-U-MAX Industrial Vacuum Cleaning System Extracts Fluid and Solids (February 18, 2008)
Powered by compressed air, the VAC-U-MAX 55MW filters liquids and removes metal chips from coolant in order to increase coolant life and ... Read News
7 Metallurgicall High Vacuum Expands Headquarters (December 4, 2007)
Metallurgical High Vacuum Expands Michigan Headquarters MHV Builds Office & High Tech Engineering Center to Handle Expected Growth ... Read News
8 Solar Atmospheres Offers Full Production Vacuum Carburizing Services (January 15, 2006)
Solar Atmospheres’ new Low Torr Vacuum Carburizing furnace and services are now operating at Solar’s Eastern Pennsylvania ... Read News
9 Solar Awarded Order for R&D Vacuum Carburizing Furnace (June 8, 2009)
A top loading model VTC-714 R&D furnace by Solar Atmospheres was ordered by a mid-Atlantic, aircraft industry manufacturer for proces... Read News
10 ASM Heat Treat Preview: Metallurgical High Vacuum Booth 1639 (September 12, 2013)
The HS430 Survivor pumps incorporate multiple oil filters that extend the life of the pump by removing particles and acid which are har... Read News
11 Solar Installs Furnace for Mid-Size Vacuum Heat Treating and Brazing (April 2, 2014)
Vacuum heat treat services expert, Solar Atmospheres of Western PA, recently announced the installation of a new high-temperature, high-p... Read News
12 Solar and ASM Offer Vacuum Heat Treating Course (February 5, 2014)
Solar Atmospheres and ASM International at Materials Park in Ohio have partnered to offer a new Vacuum Heat Treating Course.This new cour... Read News
13 ALD Announces Dates for Vacuum Carburizing Symposium (November 26, 2013)
ALD-Holcroft has announced the dates for the 8th Vacuum Carburizing Symposium, to be held in 2014 on May 6th and 7th. This two-day event ... Read News
14 Vacuum Carburizing Symposium Registration Closes April 28th (April 14, 2014)
Ford Motor Company Conference and Exposition Center, Dearborn, Michigan. The ALD Holcroft Vacuum Carburizing Symposium will feature two d... Read News
15 Herring Releases Book on Vacuum Technology (July 10, 2012)
Vacuum Heat Treatment, written by Dan Herring, the "Heat Treat Doctor," is a new book focused on principles, practices and... Read News