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The July 2023 issue of Industrial Heating features a look at the five most popular articles from the last five years. The articles includes stories on thermocouples, argon vs. nitrogen in vacuum furnaces, fuel train operations, brazing vs. braze welding, and ceramic-fiber lining attachment methods.
A discovery by Thomas J. Seebeck in 1821 paved the way for the modern thermocouple, and today it is the most widely used electrical sensor in thermometry.
Seebeck discovered that when two dissimilar metals are connected (“junctioned”) together, a minute electric potential will be generated. This phenomenon, known as the Seebeck Effect, is the basis of how a thermocouple functions.
This article provides actual data for testing performed to compare argon and nitrogen as cooling media in vacuum furnaces. The data includes five different highly alloyed materials.
Fuel-train systems, or “valve safety trains,” are designed to safely deliver fuel to burners for the heating of boilers, dryers, process ovens, thermal oxidizers or other fuel-fired industrial equipment.
Question: I was torch brazing a large-diameter copper tube into a copper fitting and built up a nice fillet on the top of the joint at my customer’s request. Someone told me that the joint I made was not a properly brazed joint but was a braze-weld instead. What did he mean? How does braze welding with a torch compare to what I thought I was doing?
As we cross the halfway mark of 2023, a midpoint review of the current U.S. Congress and the state of Washington, D.C. is warranted. As of this writing, lawmakers have sent five bills to the White House that President Biden signed into law; federal regulators issued 1,336 final rules and proposed another 948 regulations; and the White House reached an agreement with House Republicans on a bill to suspend the debt ceiling.
This is a very important topic that needs to be addressed. Design engineers and brazing-shop managers need to become “agents of change” to bring about a needed adjustment of thinking in industry about the need for external fillets in brazing.
Confidence about manufacturing in China has plummeted to a new low. Almost twice as many U.S. companies cut their investment in China in 2022 (19%) versus 2021 (10%). “Confidence has been shaken,” according to the 2022 China Business Report conducted by the American Chamber of Commerce in Shanghai (AmCham Shanghai) and PwC.
IHEA has several educational opportunities available throughout the summer into the fall, including a webinar series, online course and two seminars. IHEA’s new webinar series will focus on carbon-producing heating processes and provide methods to optimize their efficiency and reduce their carbon-emission intensity. IHEA’s fall seminars will be held on October 31 and November 1 in Cincinnati, Ohio.
