VACUUM FURNACES NEWS

Heat Treat Brazing Furnace for North American Manufacturer

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At the end of March, a vacuum aluminum brazing furnace was shipped to a manufacturer that serves the aerospace industry. The North America company produces complex heat exchangers, cold plates, and avionic enclosures.

The furnace, from PVT, Inc., has an AMS 2750 qualified work zone of 36” x 30” x 90” with type B instrumentation and Class 1 temperature uniformity. In addition to this furnace, PVT delivered two furnaces in Q4 and one furnace in Q3 2022 to companies manufacturing components for avionics, MRO (maintenance, repair, and overhaul), and electromechanical assemblies.

Vacuum aluminum brazing furnace
Source: PVT, Inc.

PVT Incorporated is a subsidiary of Consarc Corporation, an Inductotherm Group Company.


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Heat Treat Furnace Amplifies Large Die Manufacturer’s Capabilities

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Peter Zawistowski
Managing Director
SECO/VACUUM TECHNOLOGIES, USA
Source: SECO/WARWICK

A U.S.-based international manufacturer of dies will expand their operation with a high-pressure gas quench furnace. The equipment will accommodate increasing orders for the company’s largest dies.

The manufacturer’s equipment requires the use of precisely heat treated large dies. Currently the company utilizes a pair of vacuum furnaces that have some limits. The Vector® furnace they are about to receive from SECO/VACUUM, a SECO/WARWICK Group company is bottom loading with 6 bar nitrogen gas quench, 60”x 72”, with a 3-ton capacity working zone. This is room enough to treat 3 of their largest dies at once compared to only 2 per cycle for the old furnace. 

“With [the furnace’s] wide range of quenching features, [the manufacturer will] have room to grow, even enabling them to conduct low-pressure carburizing processes if they ever need to,” said Peter Zawistowski, managing director of SECO/VACUUM. 


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Precision Electrical Components Manufacturer Adds 3 Vacuum Brazing Furnaces

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Maciej Korecki
Vice President of Business of the Vacuum Furnace Segment
SECO/WARWICK

A manufacturer of a wide variety of vacuum circuit breakers ordered vacuum furnaces for metal heat treatment. The circuit breakers must be brazed with high vacuum.

In 2017, the first furnaces provided were two SECO/WARWICK furnaces. The most recent expansion is three Vector vacuum furnaces that provide high vacuum level and temperature uniformity within the entire load.

"[T]he specificity of this electric power control production requires incredible precision. Circuit breakers need a high level of vacuum and temperature uniformity. They are brazed in vacuum furnaces in a very high vacuum; therefore, it was necessary to use an efficient pumping system consisting of a turbomolecular pump and a dry pump." Maciej Korecki, vice president of the Vacuum Products Segment at SECO/WARWICK Group, a manufacturer with North American locations.


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Research Institute Bolsters Vacuum Heat Treating Capabilities

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The Korea Institute of Materials Science (KIMS), a government-funded research institute under the Ministry of Science and ICT, has invested in a new vacuum furnace from a manufacturer headquartered in North America.

Nikola Dzepina
Nitrex Regional Manager – Asia
Source: NITREX

KIMS conducts a wide range of technological R&D activities, including process improvements, application development, material enhancement, testing, and evaluation. The new Nitrex vacuum furnace will support domestic companies -- including Hanwha Aerospace, Doosan Enerbility, Sung-il Turbine, and Samjeong Turbine -- in a development project that aims to improve the cycle efficiency of industrial land-based gas turbines.

The furnace is a horizontal type 2-Bar external quench equipped with a curved molybdenum wide band heating element arranged in a circular configuration around the main hot zone. Its work area measures 15″ in width by 15″ in height by 24″ in length (381 x 381 x 610 mm).

“The Nitrex system can support a wider range of R&D projects and metals,” said Nikola Dzepina, regional manager in Asia at Nitrex. “With the ability to achieve higher vacuum levels with 10-6 Torr ultimate range, the furnace can heat treat parts at temperatures up to 1,371°C (2,500°F).”


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Industrial Automation Manufacturer Adds In-House Heat Treat Capabilities

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Maciej Korecki
Vice President of Business of the Vacuum Furnace Segment
SECO/WARWICK

An industrial automation manufacturer has ordered a heat treatment system to establish a captive hardening plant within their machine park. The line of two vacuum furnaces, an atmosphere furnace, and a washer will harden and carburize parts, specifically gears, pinions, and shafts.

SECO/WARWICK , a manufacturer with North American  locations, will produce the furnaces to harden and vacuum carburize the elements used in motor reducer production. These parts figure in the automation applications production process for industries such as automotive, aviation, food and printing.  

“In these times of constant problems with maintaining the supply chain, having captive heat treatment within a machine park provides our partners with a huge competitive advantage and independence," says Maciej Korecki, vice president of the Vacuum Furnaces Segment at SECO/WARWICK Group. "Within a relatively small area, we can create a heat treatment system that will meet the Partner’s needs."


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Heat Treating and Brazing Facility in PA Adds Furnace

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A heat treat furnace was recently shipped and installed at commercial heat treat facility in Eastern PA. The equipment will expand the company's vacuum heat treat and gas quench capabilities.

Solar Manufacturing recently delivered a Mentor® vacuum furnace. The furnace has stainless steel chamber, a work zone of 12” x 12” x 18” deep, and a maximum operating temperature of 2400°F with a workload capacity of 250 pounds. The furnace includes a VHS 6” diffusion pump for vacuum performance in the 10-6 Torr range, a 7.5HP fan motor for internal gas quenching up to 15PSIG (2-bar), and the SolarVac® fully automated and programmable controls package with a Eurotherm digital recorder.


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Massive H13 Extrusion Dies Heat Treat Hardened for Ohio Companies

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Michael Johnson
Director of sales
Solar Atmospheres of Western PA

Two large H13 extrusion dies for two separate companies were vacuum heat treated in a high pressure gas quench vacuum furnace that fully hardened the dies in successive cycles.

Solar Atmospheres, using a furnace from Solar Manufacturing, provided two Ohio companies as-quenched dies with hardness of HRC 50-52 using nitrogen as the quench gas. The hollow die was 30” outer diameter x 15” inner diameter x 103” long and weighed 16,000 pounds. The solid die, belonging to a different customer, was 34” outer diameter x 64” long and weighed 14,000 pounds. Post-quench each component was triple air tempered resulting in a final hardness of HRC 46-48.

The 10-bar 600 HP high pressure vacuum furnace permits the company to obtain the desired cooling rates, commented Mike Johnson, director of sales at Solar Atmospheres.


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Vacuum Furnaces: Finding and Managing Leaks

Best of the WebSource: Solar Atmospheres

Keep that furnace running! Obviously, a furnace leak can be quite counterproductive and make it troublesome or even impossible to keep it going. What can be done? Thankfully, there are several solutions. This best of the web article gives helpful measures in defining leaks, detecting leaks, solutions for effectively stopping a leak, and much more.

As you move through the post, you'll encounter a tutorial that starts with the basics. A furnace leak if defined with differences described between a normal leak and something such as an outgassing problem. Then, other information is presented with descriptions on the rate of the leak and possible locations for said leak. The article continues with methods for leak checking and wraps up with a check list of sorts for vacuum furnace users.

An excerpt:

Some operators or leak checking personnel will often use a stethoscope when checking for leaks, as its ability to transmit low-volume sounds and eliminate external noise is exceptional. Often in gross leaks or some smaller leaks, a standard paint brush and soapy wash solution is helpful. Brush the solution around suspected leak areas. Big leaks will blow big bubbles at the leak while smaller leaks will form very fine foam.

Read more: "Vacuum Furnace Leaks and Detection Techniques"


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EV Manufacturer Orders Vacuum Furnace for In-House Gear Prototyping

Peter Zawistowski
Managing Director
SECO/VACUUM TECHNOLOGIES, USA
Source: secowarwick.com

HTD Size-PR LogoAn electric vehicle manufacturer will move the heat treatment of their prototype gears in-house with a vacuum furnace. The company expects new product development to accelerate.

SECO/VACUUM, a SECO/WARWICK Group company, will deliver a CaseMaster Evolution (CMe) model with a working hot zone of 16”x16”x24” and a load capacity of 440 lb. The EV maker’s R&D lab will use furnace to low-pressure carburize and oil quench prototype gears. With this expansion, the manufacturer hopes to mitigate scheduling delays encountered when sending their prototype gears out to local commercial heat treatment shops.

“We have a strong partnership together," said Peter Zawistowski, managing director of SECO/VACUUM, "having commissioned a number of highly successful heat treat furnaces that provide a wide variety of processes in their plants across the world."


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Heat Treater Expands with Vacuum Furnace

HTD Size-PR LogoA Swiss commercial heat treater ordered a vacuum furnace. A system will increase the production capacity of their nickel and silver brazing processes.

Maciej Korecki
Vice President of Business of the Vacuum Furnace Segment
SECO/WARWICK

The SECO/WARWICK vacuum furnace helps with hardening larger size parts and significantly increases the efficiency of the current hardening plant. The furnace increases production. In the version ordered by the Swiss, a large working zone (36"X36"X48") with the potential to adjust to an oversized load utilizes the advantages of a round heating chamber.

“[With a] cooling capacity of 15 bar, it is possible to process parts that require very fast cooling . . . . Vector also allows the system to perform more difficult brazing processes with either nickel or silver," explains Maciej Korecki, vice president of the Vacuum Furnace Segment, at SECO/WARWICK Group. "This is our second installation with this partner. Previously, we delivered a solution from the SECO/WARWICK furnace family of a similar size, in a non-pressurized version."


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