BULK GASES & SYSTEMS TECHNICAL CONTENT

Off-Gas Process Control, Water Detection Technologies Ordered by Indiana Steel Producer

/ BULK GASES & SYSTEMS TECHNICAL CONTENT, HEAT TREAT NEWS INDUSTRIES

 

A global company providing steel plant and metals industry equipment and services, including heat treating, was recently selected by an Indiana-based steel producer to install and implement its proprietary off-gas process control and water detection technologies.

 Steel Dynamics Inc., at Pittsboro, Indiana, is the second SDI plant to place an order for Tenova’s combined technologies. With this order, SDI Pittsboro will install Tenova’s hybrid extractive/laser NextGen® off-gas analysis system, iEAF® dynamic process control system and Water Detection Technology® (WDT®) as a fully integrated solution on the plant’s 100 ton AC EAF, providing SDI Pittsboro with the world’s most comprehensive technology package of off-gas based EAF process control technology.

Tenova’s technological package combines EAF process automation, thermodynamic models, process hardware, innovative temperature/velocity sensor technology, and water detection.

NextGen® is a hybrid laser/extractive off-gas analysis hardware system that delivers faster analytical response times, requires minimal maintenance and reduces hardware and installation costs.  NextGen® enables the operator to monitor and control furnace conditions helping to mitigate operational risk.

iEAF® Modules 1, 2 and 3 use NextGen off-gas analysis plus Tenova’s proprietary optical off-gas temperature & flow sensors, a link to the plant’s PLC network and a real-time mass & energy balance to dynamically control and optimize chemical energy & electricity consumption  and improve endpoint control to maximize operating cost savings, reduce electrode consumption, increase yield and reduce power on time.  .

 

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Matching Gases with Vacuum Heat Treatment Operations

/ BULK GASES & SYSTEMS TECHNICAL CONTENT, FEATURED NEWS, MANUFACTURING HEAT TREAT, MANUFACTURING HEAT TREAT NEWS, VACUUM FURNACES TECHNICAL CONTENT, VACUUM PUMPS GAUGES VALVES TECHNICAL CONTENT

 

Source: VAC AERO International

 

Relative Gas Supply Cost Notes: [a] Based on a minimum usage of 2830 cubic meters (100,000 cubic feet) per month. [b] All gases compared to nitrogen whose relative cost is unity. [c] Based on liquid supply.
Heat treaters use a variety of gases with vacuum furnaces during the processing cycle in partial pressure operation, for backfilling to atmospheric pressure at the end of the processing cycle, and for cooling/quenching. In this article, VAC AERO describes the most common of these gases — (in order of frequency of use) nitrogen, argon, hydrogen and helium — as well as other common gases such as various hydrocarbons and ammonia (for vacuum carburizing/carbonitriding) and specialty gases such as neon (for certain electronics applications), and analyzes their uses and value in various vacuum heat treating processes. In addition, their relative cost per 100,000 cubic feet, the liquid properties and physical properties of common backfill gases, and the conversion between common pressure and vacuum units are explored.

Read more: “Types of Backfill, Partial Pressure, and Cooling Gases for Vacuum Heat Treatment”

 

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