MANUFACTURING HEAT TREAT NEWS

Tool Steel Potential Dependent Upon Heat Treating

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Source: L&L Special Furnace

 

With its unique ability to be used in the shaping of other materials, tool steel, which includes a variety of carbon and alloy steels, is a particularly valuable property for tool manufacturers as well as manufacturers of components and parts that require the same degree of distinctive hardness, resistance to abrasion and deformation, and ability to hold a cutting edge at elevated temperatures.

The three-phase process of heat treating tool steel — annealed, austenite, and martensite — ensures the tool retains these qualities, achieves intended functionality, and meets performance specifications. In addition,

 

“The phases that define the process of heat treating tool steel alter the microstructure of the steel itself. Observable under a microscope, heat treatment rearranges the atoms of the iron, carbon, and any other metal components, which serves to give the final material specifically desired properties.” —  L&L Special Furnace

 

Multiple factors can influence the final product, including the appropriate hardening and tempering temperatures depending on the type of steel.

This table provides general recommendations for the appropriate hardening and tempering temperatures based on steel type, as well as the recommended type of quench process. — L&L Special Furnace

 

“Heat treating tool steel does more than adding significant value to the treated material—it makes the use of the tool steel possible. Without properly applied heat treating, tools simply wouldn’t work or couldn’t even be made. Modern metallurgical engineering is essential to the production and manufacturing of tool steel and all of its applications.” —  L&L Special Furnace

 

Read more: “The Critical Aspects of Preparing Tool Steels Through Heat Treatment”

 

Photo credit (main image): Youtube.com  and caption: “Visual indication of tool steel phase change to austenite when heat treating. Small pools of iron are forced from the steel as the volumetric change takes place and small amounts of carbon are burned off.”

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Restarting Blast Furnace, Steel Producer Focuses on Demand

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With the restart of the second of its two blast furnaces, a major U.S. steel producer expects to step up its supply of American-made steel to support customers demand.

U. S. Steel President and Chief Executive Officer David B. Burritt

United States Steel Corporation recently announced it will restart “A” blast furnace at its Granite City Works, an integrated steelmaking plant in Granite City, Illinois.

“We are excited to announce that after the restart of the “A” blast furnace on or around October 1, all of the steelmaking operations at Granite City will be back online, helping us meet an increased demand for American-made steel that has only grown since our March announcement,” said U. S. Steel President and Chief Executive Officer David B. Burritt. “After careful consideration of market conditions and customer demand, including the impact of Section 232, the restart of the two blast furnaces at Granite City Works will allow us to serve our customers’ growing demand for high-quality products melted and poured in the United States.”

Photo Credit: CBS Pittsburgh 

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Clarity and Accuracy in Heat Treat Specifications Ensures Quality Processing

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Source: Paulo Learning Center

 

Heat treaters strive to deliver parts that meet industry and manufacturers’ specifications with precision, but too often the information they get from customers is inadequate, unclear or incorrect. This article from Paulo’s Learning Center provides 7 points of data that will help a metallurgist treat parts to stand up to the manufacturer’s intended application, including:

  • making sure materials are clearly identified
  • specifying the process required
  • noting prescribed hardness tolerance
  • identifying case depth tolerance
  • sharing the right amount of information
  • providing correct hardness scales
  • identifying inspection points

 

Read more: “Understanding Heat Treatment Specifications”

 

Photo credit: Paulo Learning Center

 

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Induction Heating Manufacturer Doubles Facility Space to Meet Demand

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Tony Mazzullo, president of Ambrell

An induction heating manufacturer has moved its operations to a facility twice the size of the previous location to accommodate increased demands for its products and industry solutions.

Ambrell Corporation, the thermal segment subsidiary of inTEST Corporation, which designs and manufactures thermal management products, recently broke ground on the new 80,000 sq ft facility in Rochester, New York. The $2.1 million project, which started in September 2017, included a complete company relocation from its previous manufacturing facility in Scottsville, New York.

“This is an exciting time for Ambrell and marks a huge milestone for the company, its employees, and customers who will all benefit from the opportunities this expansion presents,” said Tony Mazzullo, president of Ambrell, at the previous ribbon-cutting ceremony. “This new facility adds floor space to our Applications Laboratory to provide our customers with access to all of Ambrell’s products when they visit The Lab at Ambrell. The addition of floor space and equipment will also enable us to manufacture more products to meet the growing demands of our customers. In addition, our highly efficient manufacturing floor will enable us to maximize throughput while continuing to manufacture solutions that are innovative, of very high quality, and reliable.”

James Pelrin, inTEST president and CEO

“The new facility is designed to meet the demands of Ambrell’s growing business, increasing current capabilities for both product design and manufacturing,” commented James Pelrin, inTEST president and CEO. “To accommodate this rapid company growth, we are expanding from approximately 40,000 square feet at the previous facility to 80,000 square feet at the new location.”

inTEST designs and manufactures induction heating products for joining and forming metals for use in a variety of industrial markets, including automotive, aerospace &defense, machinery, wire & fasteners, medical, and semiconductor.

 

 

Photo caption and credit: Ribbon-cutting ceremony with Ambrell and inTEST representatives and local and state officials; Twitter

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Heat Treat Today’s Induction Expert Dr. Valery Rudnev Recognized at TPiM 2018

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Dr. Valery Rudnev, who writes Heat Treat Today‘s column, “Dr Valery Rudnev On . . . “, was recognized during the opening ceremony of the American Society for Materials (ASM International) Thermal Processing in Motion 2018 (TPiM 2018) conference held this month in Spartanburg, South Carolina, and received two prestigious awards for his contributions in the field of induction heating and heat-treating.

Dr. Rudnev, Director of Science and Technology at Inductoheat Inc., an Inductotherm Group Company, was elected as a Fellow to the International Federation for Heat Treatment and Surface Engineering (IFHTSE) “[f]or his preeminence in induction heat treating and modeling of the induction heat treating process” (IFTSE, 2018). As a Fellow of ASM International with more than 30 years of experience, he is considered by many to be one of the leading global figures in the induction heating and is known among induction heating professionals as “Professor Induction.” His credits include a great deal of “know-how”, more than 50 patents and inventions (U.S. and International), and more than 250 engineering/scientific publications.

Dr. Richard D. Sisson Jr., George F. Fuller Professor, Director of Manufacturing and Materials Engineering and the Director of the Center for Heat Treating Excellence at Worcester Polytechnic Institute, and Professor Rafael Colás, Professor and Metallurgist Engineer, Universidad Autónoma de Nuevo León, were awarded fellowships with IFHTSE.

Dr. Rudnev was also presented with the ASM International “Best-Paper in Heat Treating” award for co-authoring an article entitled “Revolution – Not Evolution – Necessary to Advance Induction Heat Treating.” The article was published in the September 2017 issue of Advanced Materials & Processes Magazine (HTPro quarterly newsletter) and co-authored with Gary Doyon, Collin Russell, and John Maher. The ASM International Heat Treating Society, Research and Development Committee, established this award to recognize the best papers in the heat treat industry each year.

IFHTSE is a nonprofit group of scientific/technological societies and associations, groups and companies and individuals whose primary interest is heat treatment and surface engineering.

We at Heat Treat Today congratulate Dr. Valery Rudnev on these accomplishments!

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Binder Removal in Vacuum Sintering

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Source: TAV: The Vacuum Furnaces Blog

 

Andrea Alborghetti, Technical Manager of TAV Vacuum Furnaces

Heat Treat Today previously posted Parts 1 and 2 of this series on vacuum sintering. Part 1 focused on the two processing steps of debinding and sintering. Part 2 addressed primarily the vacuum sintering furnace itself. This installment analyzes the process and variables involved with binder removal.

Andrea Alborghetti, technical manager of TAV Vacuum Furnaces and contributor to the company’s blog, provides an analysis of burning vs capturing binders, addressing advantages as well as problems that may arise and how to execute control in the process, as in this example:

“One thing that is worth clarifying is that the flames usually seen on the outlet of kilns that use combustible gases (hydrogen, for example) as the process gas, were not originally designed to burn the binder disassociation residues to reduce emissions to the legal limits. Rather, it is solely for disposing of the emitted hydrogen safely, thus avoiding hazardous, potentially explosive atmospheric concentrations being created outside of the kiln.”

Read more for further analysis of binder removal, including discerning the type of residue found with your process: “Perfect Vacuum Sintering Step by Step #3”

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Indiana Steel Operations Changing Hands, Includes Galvanizing Line

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An Indiana steelmaker recently acquired the flat roll operations of steel producer of hot roll coils, located in Terre Haute, Indiana, including the company’s continuous pickle line, a cold mill, and a galvanizing line.

Mark D. Millett, Steel Dynamics’ chief executive officer

Steel Dynamics, based in Fort Wayne, entered into a definitive agreement to purchase Companhia Siderurgica Nacional, LLC (“Heartland”) from CSN Steel, S.L.U., a whole owned subsidiary of Companhia Siderurgica Nacional (CSN), which expands Steel Dynamics’ annual flat roll steel shipping capacity to 8.4 million tons. Future plans are to utilize the full capacity of the facility, providing high-quality cold roll, pickle and oil, and galvanized products.  The geographic proximity to Steel Dynamics’ other flat-roll operations and certain fabrication locations provide opportunities related to logistics and production efficiencies throughout the supply chain and customer network.

“In combination with our current operations, Heartland brings a tremendous amount of operating flexibility and optionality,” said Mark D. Millett, Steel Dynamics’ chief executive officer. “We look forward to welcoming the Heartland employees and customers into the Steel Dynamics family and working with them to drive future growth and success.”

Steel Dynamics produces steel products, including hot roll, cold roll, and coated sheet steel, structural steel beams and shapes, rail, engineered special-bar-quality steel, cold finished steel, merchant bar products, specialty steel sections and steel joists and deck.  In addition, the company produces liquid pig iron and processes and sells ferrous and nonferrous scrap.

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Gyro Stabilizer Finished with Heat Treating at Texas Forge

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Seakeeper Gyro Stabilizer

A closed die forging company, headquartered in Ellwood City, Pennsylvania, recently launched a new marine product line for a gyro stabilizer designed to improve the boating experience by eliminating boat roll, the rocking motion that causes seasickness, fatigue, and anxiety.

The Ellwood Closed Die Group introduced the line for the gyro stabilizer developed by Maryland-based Seakeeper, which also includes several finish-machined flywheels that are assembled into the gyro stabilizers. From start to finish, Ellwood Texas Forge Navasota (ETFN), located in southeast Texas near its sister company, Ellwood Texas Forge (Houston), utilizes the entire Ellwood Group supply chain to manufacture the flywheels. Raw material melted at Ellwood Quality Steel (EQS) and procured from Ellwood City Forge (ECF) is heated and forged on various pieces of equipment within the ETFN facility to produce the near net shaped forgings. After heat treatment and processing, the forging is then rough machined, non-destructively tested for part quality and finish machined to extremely tight tolerances.

Both Texas-based forge facilities provide in-house heat treatment, along with die sinking, cutting, testing and machining capabilities to serve the aerospace, construction, defense, general industrial, marine, mining, oil & gas, and power generation markets.

Seakeeper is based in California, Maryland, with locations in Europe and Asia.

Photo caption: “How It Works: Inside a vacuum encapsulation, a flywheel spins at speeds of up to 9,700 rpm. When the boat rolls, the gyro tilts fore and aft (processes), producing a powerful gyroscopic torque to port and starboard that counteracts the boat roll.”

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The Pros and Cons of Gas and Ion (Plasma) Nitriding

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Source: AHTcorp.com

 

The compound zone acts as a ceramic skin protecting the metal underneath from corrosion. (Photo credit: Advanced Heat Treat Corp)

Engineers considering the advantages and disadvantages of surface treatments typically have a usable lifespan, surface hardness, and fatigue strength in mind. As a process, both gas and ion (plasma) nitriding avoid the issues involved with coatings and achieve similar metallurgical properties, and the compound zone increases corrosion resistance. But what are other areas in which the two processes can be compared, and what are their differences? It’s good to know, particularly since the latter could significantly make a direct impact on the end product.

Jacob McCann, a process metallurgist with AHT Corp., provides a specific list of pros and cons of gas nitriding and ion (plasma) nitriding in our Technical Tuesday feature for today.

 

Read more: “Gas and Ion (Plasma) Nitriding: What’s the Difference?”

Photo credit: Advanced Heat Treat Corp

 

 

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PA Heat Treater Expands Production Capability with UBQ, UBT Furnaces

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A precision parts heat treating company based in western Pennsylvania recently invested in a universal batch quench (UBQ) integral quench furnace and two 1400°F gas fired UBT temper furnaces for their headquarters facility.

Peters’ Heat Treating, Inc., located in Meadville, Pennsylvania, announced that the new furnace equipment, purchased from industrial furnace manufacturer AFC-Holcroft, will be integrated into an existing complete UBQ furnace line purchased previously from the Michigan-based Aichelin Group company. This equipment acquisition increases the gross load capacity of the existing line by an additional 3,500 pounds and will expand the company’s ability to service the aerospace, automotive, medical and energy sectors. Peters’ Heat Treating has also invested in a new 1400°F gas fired UBT temper furnace for one of their three locations in the tristate region, in McKean, Pennsylvania.

Historically known for their specialization in vacuum heat treating, the company has made significant investments in furnace technology to expand their production capability and gain entry into new markets. This latest UBQ furnace will interface with existing tempering furnaces, spray-dunk washer, automated transfer car and an EZ™ Series endothermic gas generator and other companion equipment. With the AFC-Holcroft equipment expansion, Peters’ has dramatically increased their capacity for oil hardening and carburizing. Processing capabilities include vacuum processing, neutral hardening, carburizing, gas nitriding, cryogenics, annealing, stress relieving, black oxide coating, induction processing, sandblasting, integrated straightening, and metallurgical testing.

 

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