TEMPERING NEWS

Batch Austemper Heat Treat Line for Agricultural Equipment Supplier

Mike Coburn
Technical Sales
AFC-Holcroft
Source: LinkedIn

HTD Size-PR LogoA major North American supplier of agricultural and lawn equipment purchased a complete batch austemper line from a U.S.-based supplier of heat treating equipment. The line, consisting of two universal batch quench-austemper (UBQA) units, is equipped with a pre-treatment spray dunk wash, a post-treatment multi-stage washer, pre-heat temper furnaces, a salt reclaiming system, and a salt holding tank.

The AFC-Holcroft batch austemper line also includes an AFC-Holcroft EZ™ 4500 endothermic gas generator that will provide gas to the furnace units. A BatchMaster™ supervisory control system is included in the line, along with calibration mode software.

“This was a great customer to work with for this project,” said Mike Coburn, Technical Sales for AFC-Holcroft. “They fully understood right from the start the environmental and economic benefits of the system.”

Source: AFC-Holcroft


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Sundram Fasteners Ltd. Expands Vacuum Furnace Capabilities

HTD Size-PR Logo

Mr. Sivaraman Arjunan
Senior Manager
Sundram Fasteners Limited
Source: LinkedIn

Indian fastener manufacturer Sundram Fasteners Limited will receive a vacuum furnace to heat treat high quality aviation screws.

This will be the second furnace from SECO/WARWICK --- a global heat treat solution provider --- for this manufacturer. The vacuum furnace on order is a compact Vector device that meets the Indian partner’s requirements in the field of fastener heat treatment for use in the aviation industry, particularly for heat treating large loads of manufactured aviation bolts.

“[The] Vector," commented Mr. Sivaraman Arjunan, senior manager at Sundram Fasteners Limited, "will improve and increase the processing capacity of the tempering, hardening and annealing processes, and will improve the process economics, considering energy savings and the graphite chamber efficiency.”

Sundram Fasteners Limited is a world leader in manufacturing precision components for the automotive, energy (windmills) and aviation sectors.


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Tool Steel Manufacturer Amps Up With 2 Box Furnaces

HTD Size-PR LogoA manufacturer of saw blades and tool steels will amp up its heat treating capabilities with two floor-standing box furnaces. The new furnaces will be used for stress relieving and tempering large steel castings.

L&L Special Furnace Co., Inc. will deliver the model XLE3648 furnace with an electric vertical door, an alloy hearth, and a complete control system. This model has an effective work zone of 34" x 34" x 44" and will be used for heat treating various tool steels for saw blades. The model FB336, with an effective work zone of 36" x 36" x 72", is fiber-lined and will be used to temper and stress relieve steel castings.


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Heat Treater To Sharpen Their In-House Operation

HTD Size-PR LogoA manufacturer of machining tools, industrial knives, mulching knives, and chippers has placed an order for a vacuum furnace with 10 bar high-pressure gas quenching. It will be used for tool steel hardening and tempering processes.

The furnace on order, the Vector® -- a furnace from North American SECO/VACUUM and the international SECO/WARWICK -- has been adapted to match the Czech manufacturer's needs: SECO/WARWICK engineers have designed a 600 x 600 x 1800mm work space. The device modification was implemented to fit the long and straight characteristic shape of the workpieces. The unit was also equipped with a directional cooling option to effectively cool down long and thin knives that, a shape that's prone to distortion during the hardening process.

The application for the device required an inverter that enables complete control over temperature at every stage of the hardening process to reduce distortion. Together with the additional option of directional cooling and the convection system, the system design helps to reduce the undesirable distortion significantly.


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Hardening and Tempering Capabilities “Take Off” for Aviation Heat Treaters

HTD Size-PR LogoA European machinery group will receive a vacuum furnace for hardening and tempering processes, and its design has been customized in order to meet the group’s need to harden aviation steel used as landing gear. The heat treatment solution will improve the process economy in European plants and is characterized, in part, by low energy consumption.

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

To meet this particular application, SECO/WARWICK engineers fitted the Vector® vacuum furnace with a non-standard system for subquenching with liquid nitrogen that enables the required quick cooling down of landing gear components. The solution has also been expanded with a vacuum system designed with a diffusion pump and is equipped with a directional cooling option and convection heating system with a specially designed fan. 

“This is already the fourth purchase order for a furnace from this product segment from this customer,” commented Maciej Korecki, VP of Business Segment for Vacuum Heat Treatment Furnaces at SECO/WARWICK, the sister company to North American heat treat supplier SECO/VACUUM. He also added that “The product solves the customer’s problem with the hardening of special aviation steel, significantly increases the capacity of the existing production line of this component, and also improves process parameters, since the current devices used by the customer are not fitted with a subquenching system using liquid nitrogen. It will certainly be one of the unique solutions completed this year.”

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Large Car Bottom Furnace for US Heat Treater

HTD Size-PR LogoFrom the southeastern U.S., a leading manufacturer of specialty alloys, pipes, tubes and fittings has placed an order for a large gas fired, car bottom furnace that is scheduled for delivery in Q4 2021.

The furnace from L&L Special Furnace Company will be used for normalizing various steels and specialty alloys at temperatures up to 2,200°F (1,200°C). It will also be used to preheat, stress relieve and temper various steels and large pipe fittings.

The L&L model FCG4410 has working dimensions of 48” wide by 48” tall by 120” deep. Uniformity of ±25°F ( 12.5°C) or better is expected throughout the work zone. Complete factory testing and on-site commissioning is included.

The gas fired furnace uses six medium velocity burners that fire over and under the load. The furnace car moves in and out of the unit on supplied railroad type rails. The door is mounted to the car and is motorized with all required stops and clearances. The side seals are pneumatic and seal to the car bottom once the car is inside the furnace. Castable piers provide good support for up to a 10,000 pound load. The furnace is completely insulated with ceramic fiber modules.

The control is a floor-standing NEMA12 panel with fused disconnect at the source. All fusing and interconnections are included. The furnace is controlled by a Eurotherm Nanodac program control with two slave units. Three-zone control is provided to promote uniformity. Overtemperature protection is provided along with a six-input paperless chart recorder and jack panel.

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Tool & Die Manufacturer Increases Heat Treat Capacity

HTD Size-PR LogoA leader in the “Tool & Dies” sector — voestalpine High Performance Metals Polska -- placed an order for a retort tempering furnace with vacuum purging. The furnace will be used for tempering tool steel after the gas quenching process.

While this is the first opportunity for the company and SECO/WARWICK to cooperate after the global-pandemic-caused crisis, the contract is the result of long-term cooperation between the supplier and voestalpine High Performance Metals Polska Sp. z o.o. (formerly Bohler Uddeholm Polska). A retort tempering furnace with vacuum purging will complete the production line installed in Łomianki near Warsaw. The facility is currently operating the equipment delivered previously from the supplier, including a hardening furnace and a tempering furnace. Another furnace will significantly increase the capacity of the hardening plant.

Cezary Żurada
President of the Management Board
voestalpine High Performance Metals Polska

“Voestalpine High Performance Metals Polska is a partner whom we’ve known for many years," said Maciej Korecki, VP of the Vacuum Business Segment, SECO/WARWICK Group. "We know their needs, we are able to provide advice and most importantly, customize the equipment to their specific needs. Our relationship is not just superficial — we learn from each other, and thus we know the challenges they face in their day-to-day production."

Vacuum furnaces are perfect for hardening and tempering. They are characterized by the high-quality of processed parts, much lower number of hardening deformations and the absence of batch oxidation which directly translates into significant money savings.

“Our main goal was to increase the capacity. Our machinery park has already included a SECO/WARWICK tempering furnace, which has proved itself perfectly," summarized Cezary Żurada, president of the Management Board of voestalpine High Performance Metals Polska. He continued, "It is worth noting that despite being less demanding, the tempering process usually takes more time than the hardening process. Therefore, in order to be able to make full use of the hardening furnace, for tooling steel we needed two tempering furnaces. Now we will be able to make production more dynamic and conquer new markets."

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Kentucky Machine & Engineering Upgrades Furnace for Heat Treat

HTD Size-PR LogoKentucky Machine & Engineering, a machine repair business in Cadiz, Kentucky, upgrades their old gas fired furnace with a dual chamber furnace-over-oven unit. They will use the furnace to shorten their lead times on parts fabricated for their customers.

Source: Lucifer Furnace
Kentucky Machine and Engineering Representative Standing Next to Lucifer Furnaces Unit
Source: Lucifer Furnaces

Both chambers of the Lucifer Furnaces Red Devil Dual Chamber furnace-over-oven are 12”H x 14″W  x 24″L; the upper chamber is programmed to heat to 2200°F while the lower oven reaches 1200°F. Dual Chamber furnaces allow a user to harden in the upper chamber then temper/draw in the lower convection oven. Both chambers are lined with 4.5″ multilayer lightweight firebrick insulation and mineral wool backup precision dry-fit to allow for thermal expansion while minimizing heat loss. Easy to replace heating elements simplify maintenance.

“By not having to outsource this piece of the process,” said Amy Kuberski, CFO at Kentucky Machine & Engineering, “the increased size capability and the addition of the draw oven feature saves us a lot of extra time without having to be at the mercy of someone else’s schedule.” She added, “We were so pleased with the ease of installation to first use! Furnace was ready to go.”

Kentucky Machine & Engineering, Inc. have specialized in serving the steel, aluminum, automotive, and heavy equipment industries since 1971. From large machine repair or building new to quality fixtures, they strive to make their customer’s downtime as minimal as possible.

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Global Metal Equipment Producer Acquires Two Heat Treatment Furnaces

A global producer of highly engineered metal earth moving, construction, and mining wear equipment recently commissioned two large capacity heat treatment furnaces. As part of this turn-key contract, Can-Eng Furnaces International Ltd. designed and commissioned individual tempering and stress relieving furnaces. Both heat treatment systems were assembled and tested at Can-Eng’s Niagara Falls facility prior to shipment and commissioning at the customer’s facility.

The furnace systems were part of a major expansion by the customer to satisfy increased demand for large steel castings and weldments used as part of their equipment designs. Both furnaces are equipped with high efficiency, natural gas-fired heating and recirculation systems that have demonstrated to exceed the requirements of AMS-2750 temperature uniformity. Both systems integrated the company’s preferred PLC hardware, which was upgraded to include a more flexible safety rated PLC over conventional hardwired safety circuits.

(source: CAN-ENG)

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Medical Implant Components Manufacturer Receives Two Floor-Standing Furnaces

A furnace manufacturer based in Pennsylvania, USA, has shipped a floor standing forging furnace for use in hot forming of medical implant parts along with a floor standing tempering furnace to a manufacturer of medical implant components located in the Northeastern United States.

The FWE422 forging furnace

The forging furnace is a L&L Special Furnace Co., Inc. model FWE422 with working dimensions of 48” wide by 24” high by 24” deep and heats to a temperature of 1,800°F. The furnace features a vertical door with adjustable stops. These stops allow the door to be stopped at a predetermined location during the heating process for minimal heat loss.

The tempering furnace is model XLE3636 with a vertical door and 12” diameter, air-cooled convection fan and roller hearth. It has an effective work zone of 34” wide by 30” high by 32” deep. The furnace is used to temper hot formed parts and other thermal processing duties.

 

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